The Future of Heat Pumps is Underground (and other places, too!)

Apr 1, 2021
355 660 Views

If you thought you were pumped earlier, wait until you get a load of this! Policymakers, pay attention!
Heat Pumps Part 1
usworlds.info/slow/video/bH9paaKoo4quqKE
Technology Connextras (the second channel that stuff goes on sometimes):
usworlds.info/tv/lRwC5Vc8HrB6vGx6Ti-lhA
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Comments
  • Hey everyone, it’s pinned comment time! And there are some *corrections and clarifications* here. Exciting! First, heat pumps part 1: usworlds.info/slow/video/bH9paaKoo4quqKE Second, refrigerants! Sloppy script-writing me didn’t catch that I implied CO2 as a refrigerant was the _only_ other option, but it’s not! There have been many climate-friendly refrigerants in use in lots of applications such as isobutane and propane, but the main trouble with these is they go boom sometimes. In larger systems the quantities needed can be dangerous which is why R-1234yf and CO2 as refrigerants are important! Third, heat pump dryers! My explanation into them is, um, well not right. It’s better to think of them as giant dehumidifiers that recirculate air through the drum. Heat slowly builds up, but it’s not really being taken from the room. Instead it’s just the heat created by the compressor being continually recaptured, and a sort of thermal feedback loop forms. The cold surface of the evaporator also pulls the moisture out to be collected. Here’s a video from This Old House that has a great diagram (though the refrigeration cycle’s magicalness of latent heat is pretty much skipped) usworlds.info/slow/video/eZqCZJ2aqKCpmX8 Fourth, I regret saying it's a "myth" that tankless heaters provide instant hot water. More fairly I think it's a misconception. Fifth, I dunno! I’ll add stuff here as we go along. Aren’t pinned comments neat? I love being able to put information right up at the very top for you so you don’t have to waste your time commenting!

    Technology ConnectionsTechnology Connections10 days ago
    • 100

      mjr . LIFEmjr . LIFEDay ago
    • @first lastmany people including me vent their electric clothes dryer inside in the winter. Just don't try it with a gas dryer.

      Trevor RitchieTrevor Ritchie2 days ago
    • @BG HoodyI think he was referencing the use of the term "instant" hot water as a myth as tankless water heaters don't provide "instant" hot water at the end of a long pipe.

      Trevor RitchieTrevor Ritchie2 days ago
    • @Zack Carey Nissan LEAF uses a heat pump

      Trevor RitchieTrevor Ritchie2 days ago
    • If you feel that way about refrigerants read the story of mister yuk.

      Curtis JonesCurtis Jones2 days ago
  • Rock isn't that thermally conductive. Thermal Coils will shed temperature certainly. But when the cooling side becomes saturated, the rock will start to struggle to warm up fast enough by soaking heat from nearby rock or soil. But A surface mounted system can dump heat into a subterrainian solution. And you can pretty much dump as much heat down there as you want. It won't STAY but it will at least absorb more heat than any heat pump can dump.

    Glen McGillivrayGlen McGillivray2 hours ago
  • "......IM PUMPED FOR IT!" 10/10 for heat pump based PUN EXECUTION

    MisFit ChitMisFit Chit4 hours ago
  • What we really need is for Peltier coolers to become more efficient. Usually solid state is more efficient than stuff with moving parts. Somehow it is not with Peltiers. If we can get them to be equally or more efficient the technology can shrink by a lot and make much less sound.

    jacky koningjacky koning7 hours ago
  • haha yeah capitalism sure is great!!!!!!! best joke i ever did

    LIES LIES LIESLIES LIES LIES9 hours ago
  • I was in a "greenfield" development when my house was built in suburb 35 miles outside of Chicago. There was bare land. I asked if I could have geothermal piping installed in the back yard. I was denied. I would have even hired my own contractors but was blocked every step of the way. Sad.

    Shadow KatShadow Kat9 hours ago
  • I personally like the milder heat heatpumps provide than the oven like heat furnaces outputs...

    O!TechnologyO!Technology9 hours ago
  • The "But Sometimes!" Is back!!!!

    Christian TemelkoskiChristian Temelkoski11 hours ago
  • It is STUPID expensive to run a heat pump. Gas is soooooooooooooooooooooooooooo much cheaper. Here in AZ, running my A/C, I see about $6-700 a month electric bill for a 5 ton 1 year old house/system with 3 zones (~3000 sqft house). I have natural gas and a furnace that cost me pennies all winter to run. Litterally about $30, for 2 months of use or $600 for two months heat pump...

    Mike HarrisMike Harris12 hours ago
  • Hey, *I've been watching your videos for a while now* As an HVAC Tech who does Electronics for a hobby (including repairing VCR's back in the day) I appreciate how accurate your videos are. Even for the refrigeration content whereas most techie people have no idea. Anyway, *as it pertains to this video* I thought maybe you would get a kick out of a few of my own projects. I installed a 3 ton 3 phase condenser onto my home for a Solar Powered project (that is still ongoing work). I get the 3 phase from a Variable Speed Drive. Single Phase in. DC in from Solar. *I converted the straight cool condenser into a heat pump* here usworlds.info/slow/video/pnmFi4vafXWCjn8 where I added a reversing valve, Thermal Expansion Valve, etc. Check it out! And as for my water heater. Well right after I replaced it I installed a HEAT PUMP with a circulation pump to heat my water. I later installed a smaller heat pump. Entirely DIY with a compressor, evaporator coil I fashioned, and a heat exchanger etc. I'm using a 9,000 BTU compressor. Pulls 8 amps at 115V which is about 4 amps at 230V equivalent. In compare to my 4.5KW heating element that draws 18 amps at 230V, that is a bit less! And it doesn't take too terribly long to heat. My most recent DIY heat pump is mounted outside and I ran the water pipe through the wall. I have yet to install a frost sensor so it did freeze the coil TWICE this winter. (It's pretty mild here in the AZ Desert) usworlds.info/slow/video/q5SKg5iqq6GWqH8 The videos are cool. I'm 50 yrs old so some of the old tech you review are fond memories!

    hackfreehvachackfreehvac13 hours ago
  • We are currently building an off grid house in upstate New York. The water heater has been a major headache because of how much energy it would use and how much solar system would need to be upsized. I will definitely look into the hybrid water heater!

    B BolB Bol13 hours ago
  • I am going down all the channels I subscribe to and asking them if they can set up a channel on Rumble ... that way I can get rid of the USworlds app but still see all the best creators who I have grown to love. Thanks in advance.

    Chris MilesChris Miles15 hours ago
  • Well the problem with heat pumps in electric vehicles may simply be the cost. It's simply not feasable to put in a heatpump costing hundreds of dollars into an entry level electric car costing perhaps 1200 Dollars. Of course that argument is moot for those expensive massively overpowered vehicles companies like Tesla Motors make.

    wrtlpfmpfwrtlpfmpf15 hours ago
  • Heat pumps don't really work all that well if you are using oldschool radiators.

    Hobbes TigerHobbes Tiger16 hours ago
  • Last week I delivered a 30lb container (think propane tank, but smaller) of R-1234yf to a shop. The invoice said it cost nearly $800...

    TikkaQrowTikkaQrow16 hours ago
  • Lots of systems slam the reverse valve while running because 'planned obsolescence'

    TikkaQrowTikkaQrow16 hours ago
  • Early adopters could also be turned off by reliability and they are godawful expensive to repair. Another fantastic (literally) green idea that has to improve before it should be forced on poor consumers. And yes, I had a house with a ground source heat pump. With repairs and maintenance it cost far more than a high efficiency gas furnace.

    Curt WuolletCurt Wuollet17 hours ago
  • Intellectual Property is literally government-granted monopolization of ideas.

    chbruleschbrulesDay ago
  • So why is the heat output of my fridge not being pumped into my hot water system and tumble dryer?

    Pete SmithPete SmithDay ago
  • I have two ground source heat pumps I've installed. The one in my shop has saved my business thousands of dollars.

    amphibiousmarineincamphibiousmarineincDay ago
  • Kudos on the TMBG reference!

    dcseaindcseainDay ago
  • It may help folks to understand if they remember there is no such thing as “cold”, what we call cold is just the lack of heat. Heat is present in anything / everything above absolute zero. Moving heat via a heat pump can be very efficient under certain conditions / parameters, as all your doing is moving heat not generating heat, this falls in a narrow band of efficiency after which generating heat is cheaper than moving heat

    J TJ TDay ago
  • You like hybrid water heaters?

    Stove GuyStove GuyDay ago
  • Can we get heat pumps hot enough to boil water?

    David WilliamsDavid WilliamsDay ago
  • is this a real video or april fools? before i watch xD

    who diswho disDay ago
  • Great video

    Brian FaulknerBrian FaulknerDay ago
  • As someone who is thinking about buying a house in the near future, I find these videos very interesting. Thank you.

    Tom T.Tom T.Day ago
  • Waste heat is a subject you should explore someday. Not make a video, but just look into personally. It turns out a lot of waste heat is not actually otherwise wasted heat, but a deliberate effort to create a lot of heat by making processes less efficient, or at least control the efficiency of some industrial process. Often this is because of political reasons.

    Lieuwe WestraLieuwe WestraDay ago
  • I just watched your video on automotive signal lights and it struck me - you're USworlds's Andy Rooney

    Stephen ManaryStephen ManaryDay ago
  • In the UK there is/are/will be green initiatives to install heat pumps, but they must be heat only. Can't have the "common man/woman/?" using cooling and dehumidifying in the all so short summer. Make it up, No Need

    diez66diez66Day ago
  • One of the best videos on how to save energy and how to "try to be greener". I love it! And I agree, patents on stuff to save the planet and our lives are so very stupid :/

    Jay ExtarysJay ExtarysDay ago
  • What?!? Heat Pump Dryer?!? I want you to dig into that further! How much longer does it take to dry the same load of laundry? How much energy do I save? NEXT VIDEO IDEA! :-D Excellent video.

    ooglekooglekDay ago
  • Geothermal drilling for houses in zentral Europe is quite normal for more than a decade

    Andreas CheeseAndreas CheeseDay ago
  • You already mentioned it at 13:30, but community geothermal makes JUST SO MUCH SENSE. We already need to start building much more dense cities. New developments should be townhouses, duplexes, quadplexes, and apartments. Splitting the cost over dozens of units is just perfect.

    Adam TreasterAdam TreasterDay ago
  • I always thought cars used residual heat (from the cooling circuit in combustion, from the battery cooling in EV) for interior heating, was I wrong?

    ThomasThomasDay ago
  • VWs ID. cars use CO2 heat pumps :-)

    DooMMasteRDooMMasteRDay ago
  • How come every time DuPont develops a new refrigerant, the old one is touted as hurting the ozone or affecting the climate?

    Rune MobergRune MobergDay ago
  • 17:28 my 2017 Renault Zoe came with a heat pump. I thought this was general practise.

    leon wittemanleon wittemanDay ago
  • Thinking of the overheating of the London underground system. Wouldn't it be nice to harvest that energy in winter to heat the buildings upstairs?

    Steffen BanhardtSteffen BanhardtDay ago
  • r152a... aka "Dust Off". More efficient than r134a, as well as cheap and readily available. It's starting to be used in European cars, and here in the People's Republik of Kalifornia, where r134a is very expensive, is the preferred alternative.

    DetroitDiesel671DetroitDiesel6712 days ago
  • Definitely looking forward to the tankless water heater video. Huge, like HUGE segway for water softeners and how they work. This whole energy situation makes me want to quit my job and make loads of patents for how there are millions of ways to reuse energy that is just being wasted. Huge, absolutely huge one for me is roadways. Black tarmac, and absolutely no energy is being harnesses by that unimaginable amount of energy being harnessed just from the common roads. Just think of the amount of power they could generate just doing nothing other than a way of travel... Just a food for thought.

    Duncan MacPhersonDuncan MacPherson2 days ago
  • Definitely a swing going from the west coast to the east coast. A heat pump is the absolute norm on the east coast. As for geothermal in the east coast, cost and installation will equal after about 6-10 years. Geothermal is definitely a huge advantage for people who live constantly in a very cold climate. I would love to have geothermal in every house. Cooling and heating both. Cooling in hot summer times will be amazing.

    Duncan MacPhersonDuncan MacPherson2 days ago
  • they will have to start building these appliances to last most of a life time as well to justify the extra expense and recoup the money.

    YishayOfStormwindYishayOfStormwind2 days ago
  • rest of the world does something that makes sense america - I'm gonna pretend I didn't see it

    NonsensicalVidsNonsensicalVids2 days ago
  • @Technology Connections, I believe UW-Platteville (not too far from you) uses district heating along with their on campus power plant to heat and cool the buildings.

    Joe TenniesJoe Tennies2 days ago
  • Refrigerants used are changing really fast in Europe

    J RisnerJ Risner2 days ago
  • The people I know that hate their heat pumps, hate them because of the cost. The high range of COP for most middle-market air sourced heat pumps (the ones a consumer would most likely own) is about 4.0, which is just about break even cost-wise compared to natural gas. So for most consumer-grade heat pumps, they are as cost efficient as gas at the best of times(actually when you WON'T need heat) , and usually worse (usually during the times you do need heat), - and if they turn on their resistive heating backup source, they are 4 TIMES more costly to run. You can add a Natural Gas Backup source, which would mitigate much of this, but in my experience, that's not how these were typically installed.

    Jonathan SmithJonathan Smith2 days ago
  • Why does my apartment in a group of buildings called the "eco-houses" not have heatpump waterheaters and dryers!? we need them... oh that's right, they ran out of money before we got really cool stuff (like solar panels on the roofs). I Might have to take this up, and try to calculate how fast we can save the upfront cost, even then it might be hard, they didn't really buy my "let's go full LED outside, it will save us a bunch of money in 18 months when the initial cost has been saved"

    Rune FjordRune Fjord2 days ago
  • I guess I've ONLY ever seen vertical geothermal in my area lol but still something I'm doing on my next house!

    Evan NekudaEvan Nekuda2 days ago
  • I use a solar clothes dryer... Here in Sydney Australia, we have a dryer, but it only gets used every year or so)

    Perry BrownPerry Brown2 days ago
  • Who is Ellen?

    Q-tuberQ-tuber2 days ago
  • Oh hey, we use district heating here in Fairbanks, Alaska. You can get a steam tap from the local power plants (depending on location, obviously) and use it for whatever you wish. Downtown buildings use it generally for heating, but residential buildings can use it for all sorts of things.

    KaedennKaedenn2 days ago
  • I am looking forward to that other time you hinted at when you'd cover the passive house ;)

    Sim JansSim Jans2 days ago
  • Where do thermoelectrics fit into this?

    7heRedBaron7heRedBaron2 days ago
  • While your points are accurate and informative, and energy efficiency is important, I feel like you are blowing way over the problem of initial cost. Even the examples you provide from Lowes and HD are 3x the price of traditional methods. For many people that live in existing homes, a new water heater, dryer, or AC system is a sudden and often unplanned expense that can be difficult to afford the cheapest option available today. To require everyone in every climate zone to pay 3x more for a better technology doesn't always make sense. What if you live in the south and use solar to supplement a cheap resistive water heater? All I'm saying is initial cost and green funding have to come from somewhere, and it's not as simple as regulating everything to the most expensive option.

    soccerrj88soccerrj882 days ago
  • Great stuff! I liked that you briefly spoke about CO2 as a refrigerant. You should do a video on CO2, ammonia and propane as refrigerants.

    k.wk.w2 days ago
  • Ironically the yeehaw Texas of Canada (Alberta) is repurposing unused oil drilling equipment and skilled labour to pioneer deep geothermal electricity generation.

    Michael HendsbeeMichael Hendsbee2 days ago
  • I love that you're discussing the climate change issues on this without getting preachy. A smart grid can greatly reduce emissions. You take a quick pass at the topic and then move on because that's not what the videos about.

    Michael HendsbeeMichael Hendsbee2 days ago
  • Going more effcient does not always pay. One consideration of heating and cooling is that there are times, it just does not pay to go more effcient. Ran the numbers recently on a small house in the south (TN) and heating and cooling energy averaged about $1 a day. If you simply take some care on appropriately selecting a unit, and upgrade the unit as needed (every 20 years or so) the gains from being super effcient are just not worth it. Sure, one needs to make sure your home is appropriately insulated, and weather sealed. There are plenty of things you can do that can limit heating and cooling needs (plant shade trees in the right place, maximize solar gain in the winter, ect.). But the cost of the unit and the installation of the unit is a major problem. Having standardized units that are easy to service and having educated people are also major problems. I mean, we struggle to get people to change furnace air filters every 30 days. With costs of $1 a day, what if I saved half with a more effcient unit. (aka $150 a year, how much would that be after 10 years? $1,500 That is not enough money to buy fancy equipment. Even with a 20 year life it is hard. A basic economy whole house heat pump costs $2,500. Brand names which are high quality last longer and cost a lot more.

    Cryptick CryptickCryptick Cryptick2 days ago
    • The cost consideration discussion really needs to include several things. (Energy Costs, Equipments Costs, and Installation/service costs). Let's say a lower end HVAC heat pump unit costs $3,500 and lasts ten years. That means each year you "use up" $350 of equipment or about $1 a day. Having that unit installed is also going to cost, say $1,800 (That is $0.50 a day in installation costs). You should have the unit checked annually. That may cost $150. (Aka $0.50 a day). So over the life of the unit your costs are $1 a day for energy, $1 a day for equipment and $1 a day for installation and service. (Notice how i am keeping my math easy and simple.) While buying a more expensive and higher quality unit does result in longer life and potentially less servicing, the benefits are highly risky down the road. You are making a substantial bet that the unit will function without a problem and your benefits will be extracted at the end of the life of the unit.

      Cryptick CryptickCryptick Cryptick2 days ago
  • Hey, great video, as always. And thanks for giving the temperature in Celsius as well, but could you consider giving pressures in bars/atmospheres or hPa as well? Feet I can convert myself, but temperatures and pressures are more complicated :P

    d_o_m_i_f_id_o_m_i_f_i2 days ago
  • Do you really talk like that off camera?

    S KS K2 days ago
  • Or if you want instant hot water you could go for city grid heating.

    John TrustworthyJohn Trustworthy2 days ago
  • April 1st. Oh I get the joke. It's something that let's you be as off grid as possible and yet it's advertised with its "low emissions".

    John TrustworthyJohn Trustworthy2 days ago
  • When I was in this small crappy apartment I had one of those crappy portable air conditioners. It didn't work great for cooling, but was awesome at drying clothes. They should have marketed it as a clothes dryer (who has an AC vent into the indoor space--isn't that just a dehumidifier?).

    Joe EagarJoe Eagar2 days ago
  • My brother has one of those hybrid heat pump water heaters. He lives in Florida so cold winters aren't that big of a deal.

    Joe EagarJoe Eagar2 days ago
  • i have that since 10 years with energy to operate it from my roof. is that kind of new?

    MotorheadsMotorheads3 days ago
  • You say engineers are smart I'd like to qualify some engineers are smart. I've met some engineers and boy are they stone cold stupid.

    iWin RariWin Rar3 days ago
  • Very cool information!

    Jackal1412Jackal14123 days ago
  • Missed at least one of the problems that tends to occur with ground source heat pumps, over time they tend to repeatedly ice underground, then thaw, over time this results in poor contact, & poor thermal transfer. Result is a system that doesn't work properly without very expensive remedial works & a replacement ground loop. Yes the problem can be designed out, but it results in either a very expensive ground loop, or one buried very deep, also expensive. I'd love to see a study done also on how much deeper you'd drive the frost line if you built an entire suburb where everyone was extracting heat from the ground. Yes you can pump heat, but the amount available & the rate at which it replenishes are neither one actually limitless. Very easy to get excited about such solutions, widespread adoption brings it's own problems though.

    David EssamDavid Essam3 days ago
  • Batteries don't need to be heated to improve range. A cold battery stores just as much energy as a hot battery. Cold gas isn't any different then warm gas. Energy per volume might change, but energy per unit doesn't. You get more range in the summer because the air is less dense and there is less wind resistance, also less energy lost to the car warming up quicker. Maybe if you noted your gas mileage during the different seasons you would notice this exists for gas cars too...

    Trevor MorganTrevor Morgan3 days ago
  • Why on earth would you show some hackjob homeowner installed junk systems in this video?

    Chris AndersonChris Anderson3 days ago
  • Chicago... Record low -27°F record high 109°F middle eastern US gets the worst of both worlds...

    C:\DEAD\PIXELC:\DEAD\PIXEL3 days ago
  • Horizontal drilling is a thing too. That's what we had done. The loop is basically shaped like a giant rake underground.

    TravisTravis3 days ago
  • I think the patent issue is a good deal more complicated than you're presenting it. I'm not saying there shouldn't be reform -- reform would probably be a good idea! -- but treating a complex policy issue as simple is, in my experience, more likely to lead to worse policy than better policy. It's not like a carbon tax, where there is clear expert consensus and basically unassailable arguments for it. Patent law has a lot of tradeoffs, many of them poorly understood, and "would this slow the pace of innovation" is a tricky question to answer for any particular change in policy. Like, sure, maybe dropping the patent on the new refrigerant would have some benefit, but what if there's some medical advancement or carbon reclamation tech that gets slowed down because that particular tech is super expensive to research and without the lure of a patent it's super hard to justify the costs and uncertainty? Again, it might be that in practice the patents end up slowing innovation rather than speeding it up but that's a complex question whose answer does not seem obvious.

    Jay SearsonJay Searson3 days ago
  • A GSHP will never pay for itself in energy savings vs an ASHP over the life of the system. Also a GSHP will deplete the heat of the loop field during cold spells. You need to think of the ground as a storage battery instead of a heat source. The best answer to all the problems common to energy use in the home is smaller, more efficient, better insulated homes.

    The Fixer Of Broken StuffThe Fixer Of Broken Stuff3 days ago
  • Dual fuel heat pump stats that automatically switch from hp to fossil fuel based on outdoor temp have existed since the 90's and so have Bill Porter kits.

    The Fixer Of Broken StuffThe Fixer Of Broken Stuff3 days ago
  • ALERT: perfectly executed They Might Be Giants reference @8:10 . Nicely done dude.

    Carl G WileyCarl G Wiley3 days ago
    • interesting what is the single most important thing about this clothes dryer to you and why?

      Luis ReyesLuis Reyes2 days ago
  • As a huge fan of heat pumps, how have I not heard of heat pumps being used in clothes dryers and water heaters? I live in central Oklahoma. The winters are never too bad, maybe snow twice a year. February's cold snap was a rarity. And the summers are SCORCHING. It's 95 degrees and the dew point is 75. My dehumidifier runs nearly constantly beginning in April and doesn't stop until mid-October. But to dehumidify my air and cool my room with my water heater and my clothes dryer while also accomplishing the tasks of drying my clothes and heating my water? Count me in! Ventless clothes dryers also have the added benefit of not needing a vent. It basically eliminates the enormous fire hazard that is a clothes dryer vent.

    Spicy TunaSpicy Tuna3 days ago
  • You forgot the pool as source of heat for your heat pump, I do, it is super cool ;)

    François PiednoëlFrançois Piednoël3 days ago
  • What if you attached sterling engines to the outdoor portion of a heat pump? Would it increase the efficiency or decrease it? It could generate enough electricity to power the pump, but it would also reduce ventilation which would decrease the amount of heat exchange. Maybe if you could maximize the surface area of the sterling engine, it could dissipate heat faster and not provide too much insulation.

    Not Christian HodgesNot Christian Hodges3 days ago
  • Human skull? On the ground?

    Ryan YoungRyan Young3 days ago
  • I think you have some good points but you have a lot wrong. Ground source heat pumps have existed forever but people don't use them because it is pretty easy to saturate the ground loop and it's a bitch to replace. R-1234YF is nifty but it fucking combusts when you wreck your car. Everyone has a solution to the energy crisis and yours is not better than anyone else's. I'm a long time fan and I don't intend to unsubscribe. Just hear me out - you need to do more research on this one. What we need is lower carbon sources of generation. Push coal plants to become gas powered. Push gas powered plants to become renewable. Over time make all energy be zero carbon then it doesn't matter what the end device is, we're generating it cleanly from the get-go. Then leverage electric frac to sequester the carbon and undo the damage we've done. It all starts at the point of generation. You are absolutely correct though, heat pumps are free energy that we should exploit.

    TombaxTombax3 days ago
  • 13:29 That won't work for long. People are weirdos. Whenever a property is sold, a new owner won't want it because of plant maintenance costs. Then it becomes a legal fiasco.

    Tony RuleTony Rule3 days ago
  • So my recently purchased home came with only a wall heater. This heater was promptly removed as we re did the floors, and it was in the way. Long story short, we wanted to install heating/air, and because of your video, we opted for the heat pump option. The guys are literally installing it as I am typing this comment. Thank you for all of the info!!

    NateNate3 days ago
  • Your heat pump vs auxiliary heat seems to imply you can only use one or the other. But in fact you can keep the heat pump going (Maybe it's running with COP=1.1) *and* run your aux heat at the same time so you get as much cheap heat as you can from the heat pump and only fill in the remaining needed heat from your aux source. This gives the best balance of cost and comfort.

    Jeremy AkersJeremy Akers3 days ago
  • Thanks. As far as water heaters go, I'm surprised these brainy thermostats can't just be hooked up to them as well, telling them when peak hot water will (or won't) be needed. Technology can be wonderful, but only if we use it intelligently! As to heat pumps, smart thermostats, ground sources, etc., the only question seems to be 'How bad will things have to get before we start truly integrating various systems out of sheer necessity?' That's too bad. That's also *_capitalism at work for you._* The other problem is that of the integration itself. I don't have wireless headphones. The point of that seemingly non-sequitur statement is this as follows. The reason I don't have them is because I've made an amazing discovery: they're currently only convenient for very specific, niche purposes. My wired Bose headphones are simple (and much cheaper!) I can use them to listen to this program on my laptop. Then, in about 4 seconds, I can unplug them, and plug them into either my phone or my TV or whatever [I have a cord that runs out of the back of the TV, and is hung from the ceiling over my chair.] Easy. Until someone builds systems that would allow me to touch one of the earbuds of wireless headphones and say, "Connect to Living Room TV", or "Connect to Rikk's Phone", they will be a pain in the ass to disconnect from this and connect to that. In this digital, computerized age, there's no reason such things couldn't easily be done. But all these companies are too busy competing to integrate. Oh well. tavi.

    Richard DeeseRichard Deese3 days ago
  • Switching the direction without stopping the compressor is definitely bad, at least for split units. The manuals always say that if you're running it and want to switch from cold to heat modes you should turn it off first, so it's natural that it stops by itself whenever it needs to reverse. the heat exchange.

    Fernando MirandaFernando Miranda3 days ago
  • One point not touched on: Heat pumps are a bit harder to install as a retrofit to a circulating (pumped) water heating system. Sure, the heat pump is easy to connect in place of the boiler, but generally doesn't get the water as hot as a boiler does. This means the radiators may need to be swapped out for larger ones (and/or underfloor heating pipes put in) to cover the coldest days. This adds to the expense of an installation. Or add/replace with ugly fan blower units (as shown in the first video), although those could also do cooling if needed. A heat pump might also struggle to produce domestic hot water of a safe temperature through an exchanger tank or unit (hot enough to kill the nasties that could grow, cold enough to not scald), again as a retrofit problem for a hot water system (using an exchanger tank or heat on demand approach) Circulating water central heating systems are less common in the US than (say) the UK (where it is the most common sort, gas or oil), but not unknown in some older buildings. A backup fuel powered boiler probably would help in the circumstances (additional cost, complexity, maintenance), as can backup electric heat (most kinds anyway; storage heaters would probably defeat the point since these tend to be always on to some extent, either accumulating at off peak night-time rates or discharging during the day/evening)

    Miles ThomasMiles Thomas3 days ago
  • ok

    AtlasAtlas3 days ago
  • Lol and condensate dryer. No refrigerent, just as fast as a conventional dryer, extreamely simple to make. seriouly dude how could you forget, even in your eratum!

    david blarstrondavid blarstron3 days ago
  • Why do regular resistance driers pump their air outside in cold areas?

    first lastfirst last3 days ago
  • No one wants to hear your stupid political opinions where you advocate for controlling people.

    cmdrfunkcmdrfunk3 days ago
  • Yes, Not OSWCESCAF and WWCWWC. EACSBR (IUTLTJBSDHPDW) also patents shouldnt be applicable to biology either

    tutacattutacat3 days ago
  • The arrogant fragrance coincidingly doubt because greek spectroscopically blot qua a shallow aries. wild, devilish stranger

    James KimJames Kim3 days ago
  • They have gotten better with the reversing valve changes with compressor on. Rheem is one brand that turns off compressor to change over the valve.

    Nick FilippiniNick Filippini3 days ago
  • I have a little question, not related to his video but maybe you know then answer. Turbine engines are simplier, smaller, lighter and more efficient than piston engines. But these can't be used on cars, because there is a long lag between the moment you push the pedal to the moment you get the power on the wheels. But, in hybrid cars, that problem should not exist, because the electric motor can provide you the quick response, while the turbine motor is only a backup to maintain the batteries charged. So... Why hybrid cars make use of piston engines?

    Ayu Rogers PendragonAyu Rogers Pendragon3 days ago
  • I think you needed the "too deep" alarm towards the end there

    TweeterMan287TweeterMan2873 days ago
  • Community heating was done extensively here in Germany back in the late 70s to 90s, and we've mostly stopped using it. Reason: We gradually required more heat generation as more homes were connected, but also slowly began moving away from conventional power stations that provided the waste heat. What did we end up doing? We built HEATING PLANTS for crying out loud. The efficiency of burning stuff ONLY for heat, and then pipe it across entire cities is horrendous, and I still have the image of all the thawed walkways and such in winter, where you could very clearly see where such piping was going under. When my dad bought his house in 2000, he actively disconnected it from community heating and put in a gas furnace. Cheaper, more efficient, more future proof. There are quite a few parameters to keep in mind when doing this, and it is by no means a generally preferred solution. Edit: Well, and whaddayaknow. The next few seconds in your video touched on that. Ooopsie =)

    Fonk BadonkFonk Badonk3 days ago
  • I think the car thing is mostly down to automotive engineers... Internal combustion cars use waste heat from the engine, so car AC units have always just been cooling. Reversing it for heating probably doesn't even cross most folks minds as something which could be done...

    Travis CollierTravis Collier3 days ago
  • Could the Energy Efficiency of a heat pump be increased significantly by using a compressor that burned natural gas being piped to the house? I've only ever seen heat pumps that ran off of electricity. The waste heat from the natural gas powered compressor could be used as a heat source for the pump.

    michalchikmichalchik3 days ago
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