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

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If you thought you were pumped earlier, wait until you get a load of this! Policymakers, pay attention!
Heat Pumps Part 1
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  • Hey everyone, it’s pinned comment time! And there are some *corrections and clarifications* here. Exciting! First, heat pumps part 1: 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) 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 Connections14 päivää sitten
    • Here we have ground source heat pumps for summer - high cop even at 45 C ambient. To be technically correct (the best kind of correct) these systems are geoexchange or ground-source as distinct from geothermal

      Ralf WilsonRalf Wilson3 päivää sitten
    • 100

      mjr . LIFEmjr . LIFE5 päivää sitten
    • @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 Ritchie6 päivää sitten
    • @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 Ritchie6 päivää sitten
    • @Zack Carey Nissan LEAF uses a heat pump

      Trevor RitchieTrevor Ritchie6 päivää sitten
  • Was that an Ellen's Energy Adventure callback I heard in there?

    photogineerphotogineer53 minuuttia sitten
  • "Engineers are smart!" -TC Guy, 2020

    Maniac3020Maniac3020Tunti sitten
  • I'm definitely the kind of person who loves laughing out loud at videos about the complicated inner workings of heat pumps

    RhythmicityRhythmicity6 tuntia sitten
  • we really need more investment into electric generation of LPG and gasoline. Then we can go full renewable on the front end, and retain existing use modes. Because heat pumps failing when cold means we need LPG....

    flow inflow in6 tuntia sitten
  • You were bringing up patents and how you think that patents that would benefit us in slowing and reversing climate change should be invalidated. Fun fact: the current worldwide patent classification system has a whole category for those technologies: Class Y02. So, that ain't going anywhere unfortunately.

    David CincirukDavid Cinciruk8 tuntia sitten
  • patents = horse shit..... Worst thing ever... Glad they're not international and our friends the Chinese can ignore them

    Hugh FraterHugh Frater8 tuntia sitten
  • R1234yf seems to only be in use in automobiles, does @technologyconnections know when it will be available for home cooling?

    Michael FMichael F14 tuntia sitten
  • 11:21 No man, this is not possible. A heat pump powered by gas cannot transfer more energy against its gradient than is contained in the gas. If it was then you could hook up the output of a heat pump to the input of a heat engine and use that to drive a generator for infinite power. Electricity is generated when energy moves down it's gradient (Think water in a dam driving a turbine as the water falls to a river down below. ). You cannot use that energy to then create a greater gradient else where. This would be like using the energy from our dam to pump more water into a different dam at the same height.... You could just make a loop of dams and generators for infinite energy.

    Cinch MCCinch MC18 tuntia sitten
    • @Elin Unfortunately it is more complicated than that. We are not simply moving energy from one spot to another, we are moving it against the direction it wants to go. We are taking heat energy from a cold place and pumping it to a hot place. We are creating a difference in the concentration of thermal energy between the inside of the house and the outside. This is the reverse of the process used to create the electricity at the power plant. There they create hot, high pressure gas by burning natural gas and allow the heat and pressure to move to an area that is cold and low pressure. In the process they extract energy for making electricity. It is not possible to use one energy gradient to create a larger energy gradient some place else as he seems to be implying.

      Cinch MCCinch MC10 tuntia sitten
    • Isnt that the whole point of a heat pump? You take energy from somewhere and put it somewhere else, and the process of moving said energy takes less energy than you moved. You're not creating free energy, you're just taking it from somewhere else right? So yes you could heat up a home more than the raw chemical energy contained in the gas, since you're not actually using that energy to heat up anything, you're just stealing that heat from somewhere else using that energy.

      ElinElin16 tuntia sitten
  • I've just been binge watching yours videos, I just want to say thank you for making this content, I've got a smaller FIworld channel & I now understand how annoying it is to be stuck to a video schedual. You are awesome cool dude! I wish you a long life filled with joy!

    Level UpLevel Up21 tunti sitten
  • Firewood is the answer. A tree scrubs the atmosphere to a higher degree while alive, than the carbon emitted while it rots or is converted to another form of energy.

    CotronixcoCotronixco21 tunti sitten
  • Same principle could be used to cool homes in Summers in temperate regions

    Ashutosh PandeyAshutosh Pandey21 tunti sitten
  • I have a heat pump clothes dryer!

    Nick NNick N23 tuntia sitten
  • Here in Florida its pretty much standard to have a/c units with heat pump capability. I just had a new system installed, a/c plus heat pump, plus heater strips. Great system, $3300 installed for compressor and air handler (410a)..

    radzewiczradzewiczPäivä sitten
  • Ductless AC's will do heating and they are *great*. I have had them for many years. They weren't allowed for economic protectionist reasons until recently...

    エビGrilled FlatfishエビGrilled FlatfishPäivä sitten
  • Slightly unrelated rant at YT: I just realized I haven't been getting your videos in my recommendeds. I came to check on your channel today because it's been a little bit since I saw you in my feed, only to find out you've uploaded 3 times since the last video I saw and I had no idea. I hate the way YT's algorithm works because as an avid YT watcher, there are many channels I interact with, but unless I fervently interact with all of them as much as humanly possible, I don't really get a well curated sampling of what I like to watch. Usually it will cull down the recommendations to only those few channels that I happen to have interacted with in the last week, removing the existence of literally anything else from my feed. For example, I binge-watched some videos from a popular artist YTer a couple days ago, and now every other video on my recommended feed is one of his. I like his content, obviously, but that's a little much. I'd like to see some of the other channels I enjoy popping up in there too. I have a long history of watching said other channels that goes far beyond the last week, after all. Just because I haven't seen their stuff in the most recent past doesn't mean they're dead to me in terms of my interest! In any case, just dinged that little bell so that I'll know when you upload from now on, but what I wouldn't give for YT to improve it's algorithm altogether.

    Ceres AzaliaCeres AzaliaPäivä sitten
  • There were so many excellent points in this video, I'm gonna have to watch it multiple times. The concept of invalidating patents is the kind of attitude we need. "All hands on deck", use whatever we can ASAP.

    Ruben QuackRuben QuackPäivä sitten
  • Back when I had a Mac laptop, on cold days, I'd just do stuff on my laptop and the laptop would get SO HOT that I could use it to warm me up. Also I've turned on and held incandescent light bulbs to warm my hands, and nowadays a gaming console does the trick if it's nearby. The heat that comes out of those things is how I imagine a hair dryer feels on its lowest setting. Sitting in the car is also very effective (It works like a solar oven). Somebody once had the idea that we could be using computers as heaters while they just crunched numbers for scientific projects that required tons of calculating. I feel like that's the real solution because it's for a good cause and the heat would otherwise be treated like waste when we actually need it.

    John SmithJohn SmithPäivä sitten
  • I'm brazilian and I find it amusing that american ACs aren't reversible. I'm in my 20's and every single unit here I have ever seen is revesible. Also most homes here use electric shower heads instead of having a heated water tank. Say what you want about them but modern ones are f***ing amanzing.

    whatthereqwhatthereqPäivä sitten
  • You should do a video about o3waterworks!

    Mitchell RuscinMitchell RuscinPäivä sitten
  • Oh wow, nowdays we use the ,,zippy zappy'' way of power transmission so extensively.

    Jakab GergőJakab GergőPäivä sitten
  • Just got my new $1500 Whirlpool heat pump dryer thanks to this video. With 12 KW of solar, electric car, and other energy saving appliances We are inching closer to being a carbon neutral family.

    Alex CourtneyAlex CourtneyPäivä sitten
  • so, My air con remote has died. Its been bodged so many times, and I only use it on the odd really hot day (> 35c, I work in a tin shed, im ok with being hot). I wonder if i can hack the AC to ground source... i mean, if i need to rewire it anyway....

    arjovenziaarjovenziaPäivä sitten
  • I would vote for you if you ran for office.

    Gabe BronsonGabe BronsonPäivä sitten
  • Honestly kinda weird we aren't sticking the source tubes under roads whenever we build them. We're gonna dig deep into the ground for their foundation anyway, and imagine being able to make sure the road only freezes once and thaws once per year instead of like 20 of each each spring and autumn.

    junogutenjunogutenPäivä sitten
  • So most towns and big cities are near some big river. If that was used as the heat pump source during winter to heat all those buildings, do you reckon they'd freeze it immediately, or would there be enough heat there?

    junogutenjunogutenPäivä sitten
  • So when we're considering saving power from summer til winter, why are we making electricity with PV instead of concentrating the heat with those mirror and water pipe thingies and storing that away in some big tank somewhere coated in 10 meters of rockwool to be distributed to heatpumps near you in the winter?

    junogutenjunogutenPäivä sitten
  • Heat pump clothes driers are many times also closed loop devices. We have one Siemens unit where the circulation is simple, cold coil -> hot coil -> drum -> cold coil etc.. Water condenses to cold coil and goes down to drain and hot coil heats the air again. Same air just circulates round and round. At the end there is slightly warm (100F or so) air that is reeeally dry circulating and drying happens quite fast. Only air circulation to room is simple fan that cools down the compressor unit but none of the actual dryer air is vented. Downside is that dust collects over time to cold coil as filters leak slightly, I had to pull the whole thing apart to be able to clean the cold coil fins. Of course the coils are below the drum on dryer base inside the air canal as it should have "automatic cleaning" which means that condensed water is poured over of the cold coil few times during drying cycle, but in first 9 years it actually blocked the cold coil airflow and drying time was getting extremely long. After cleaning the fins with compressed air to counterairflow direction the thing runs good as new. Compressor and rotation motor/fan has combined power of approx 900 Watts and one drum full of clothes takes about 1.5 hours to dry so drying the whole batch eats less than 1.5 kWh.

    KarjisKarjisPäivä sitten
  • Actually big apartment block CAN get enough heat from one hole. That hole just need to be over half a mile deep. Not just research, in production already.

    KarjisKarjisPäivä sitten
  • #TechnologyConnections4President

    Steven AlpertSteven AlpertPäivä sitten
  • Me watching for the moment Alec just finally says "it's capitalism. the problem with all the things is capitalism": 👀

    Lucianna OsuchaLucianna Osucha2 päivää sitten
  • Why can't you just dig a deep trench and put the spool of tubing in sideways in the bottom 3 feet or so of it, and backfill it? It would do the same job with far, FAR less excavating. The heat transfer would then be horizontal instead of vertical, but just about the same amount.

    Mike WarotMike Warot2 päivää sitten
  • Geothermal isn't a magic solution, you will eventually heat up the earth your looped is placed in and you will not get any more heat. The trouble is the earth/rock has poor heat conductivity.

    StinkPickle4000StinkPickle40002 päivää sitten
  • There are commercial buildings, in a downtown, utilizing borehole and heat pumps.

    StinkPickle4000StinkPickle40002 päivää sitten
  • Could a house that uses heated floors work with a heat pump though?

    My Username Is Also BortMy Username Is Also Bort2 päivää sitten
  • Heat pump clothes dryers suck compared to "normal" dryers, at least my European one does.

    isupossisuposs2 päivää sitten
  • My ground loop goes below freezing despite being 6ft or more below the surface, the combination of -20/-40F and lack of moisture in a semi arid climate meaning heat conductivity is limited, but methanol and other additives mean it still works fine.

    Steevo69Steevo692 päivää sitten
  • [rude raspberry] The subtitles are fantastic!

    Rémi CardonaRémi Cardona2 päivää sitten
  • My condo uses a closed-loop water source heat pump... it uses a really terrible line voltage mechanical thermostat I'm getting replaced with a modern digital one.

    MattMatt2 päivää sitten
  • Our water heater is a hybrid one. We run it on heat pump most of the time. And because it's in the garage, it actually makes a great air conditioner for the garage in the summer. Especially since our garage door is insulated. I can actually just use my garage as if it's another part of the house. However, in the winter it gets hella cold in there.

    steevfsteevf2 päivää sitten
  • lifehack: if you put your house under ground you don't even have to pump the heat to the surface.

    holden⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻holden⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻⸻2 päivää sitten
  • 25:00 Holy... $5? Okay, I buy a considerably larger canister for work, but, they cost a GRAND! They never used to cost as much as £1000, but they do now.

    bobingaboutbobingabout2 päivää sitten
  • i live right next to a lake in australia. in the winter it gets down to 10C (50F) at the lowest, and in the summer it gets upto 45C (113F). would it be worth using the lake for heating/cooling?

    Peter MillerPeter Miller2 päivää sitten
  • Ac unit that dissipates heat into hot water tank?

    seamego seaseamego sea2 päivää sitten
  • just wanna say thank you for the subtitles, idk if you write them but i assume so cause your funny notes, just lightens the mood, keep up your amazing work! been subbed for a long time and ill never regret sticking with ya!

    mortalZ zombieXmortalZ zombieX3 päivää sitten
  • I'm the UK we have point of use showers.

    David BalfourDavid Balfour3 päivää sitten
  • Oh, well done

    David BalfourDavid Balfour3 päivää sitten
  • Fully agree, now do combined hear and power plants

    David BalfourDavid Balfour3 päivää sitten
  • I was out by myself in the graveyard I was doing an interpretive dance...

    Spencer PetersenSpencer Petersen3 päivää sitten
  • I love your jacket, man.

    Sean MartinSean Martin3 päivää sitten
  • I'll defrost your outside unit. Sorry, I watched a stupid Nick Cage movie with my brother tonight.

    Sean MartinSean Martin3 päivää sitten
  • Here in French Canada, A/C is almost a foreign concept and our electricity is stupidly cheap and green. Electric heaters make sense here. I say almost, because one half of my building has A/C and my half doesn't. Where did they stick the heat pumps? RIGHT ON TOP OF MY SIDE OF THE BUILDING. There's an extra-loud one atop of my very dorm. Thanks to acoustic bullshit, it is especially noticeable when I'm in bed or at my workstation. I am not fond of heat pumps. I don't care if it's better. I don't care if I could save the planet. Heat pumps are loud boxes over my head and the less I have to hear them, the better.

    RWallace514RWallace5143 päivää sitten
  • Didn’t get why keeping gallons of water hot is not more wasteful than warming it on demand

    danielecorkdanielecork3 päivää sitten
  • Citys do use shared thermal heat, look at halifax.

    Anti DecepticonAnti Decepticon3 päivää sitten
  • I have an easy solution, it's crazy, but ever thing of just running 2 thermostats? also you can use the triggering of the secondary thermostat, to trip open a normally closed relay and cut w line to the line of the other thermostat and it will turn off.

    Anti DecepticonAnti Decepticon3 päivää sitten
  • Wouldn't ventless clothes dryers be a little dusty on the inside?

    GizmoFromPizmoGizmoFromPizmo3 päivää sitten
  • For this kind of price i would need to consume my current rate of gas and electricty for nearly 30 years before i reach the upfront cost...I admit those are great techs but like solar panels, if you are not rich they are more a financial trap than anything.

    dragonmares59110dragonmares591103 päivää sitten
  • Heat pump heat is always cold.

    GizmoFromPizmoGizmoFromPizmo3 päivää sitten
  • My Tesla Model Y uses a heat pump to cool and heat the cabin. So it can be done!

    John MarvinJohn Marvin3 päivää sitten
  • "Engineers are smart". Many engineers are smart, some have degrees and believe they know more than technicians with decades of experience. - a salty technician.

    K_TechK_Tech3 päivää sitten
  • Thank you so much for this video! I was very confused about a construction site in my street where they are making giant vertical holes in the ground with huge tubes. It seemed completely crazy, but now I'm sure it's for a geothermal heat pump!

    Beere AzulBeere Azul3 päivää sitten
  • Radical!

    AlyxAlyx3 päivää sitten
  • I mean... Propane (R290) is also a pretty fantastic refrigerant, cheap, operates are reasonable pressures, and practically no GWP and no ODP at all. Buuuut... Well, everyone knows the downside here. People will freak out about propane in a refrigeration system, and yet no one has a problem with 600 gallons of it sitting in a tank behind the house. What about cars, you say? Ok, well, I guess the 10-40 gallon tank of HIGHLY flammable liquid sitting underneath your vehicle is also a problem.

    akio2589akio25893 päivää sitten
  • My parents added a geothermal heat pump to their house when they built it around '99. They /could/ have taken a vertical system, but since they had the place and were digging around anyway they chose the horizontal system. Unlike in your examples this isn't used for eating the air of the building, but solely for the central heating for both the warm water and the house's floor heating (we only have floor heating). Thus it isn't as easily reversible, but it *does* keep the house cooler in the summer a bit. The system runs without much problems and only around two years ago or so my parents had to replace the pump due to age. 😁 Fun fact: back then our friends had all said that they'd come around with blankets and such when our heating would fail, cause it wasn't that known back then either, but we always had a cozy home with around 23°C 😍 I take it condenser dryers aren't that common in the US then? 🤔

    PascalDragonPascalDragon3 päivää sitten
  • Odd that Tesla didn’t invest in developing an automotive heat pump before the model 3 - quite a lot of range bang for a surely fairly small development cost?

    Ralf WilsonRalf Wilson3 päivää sitten
  • Thoroughly enjoyed! Heat pump tech seems to be making some big strides lately into the high temp/high delta realm. Should do an episode on commercial scale systems, the COPs on chillers running cooling towers can be extraordinary (>>10) it’s combining an evaporative cooler with a heat pump but it’s still impressive.

    Ralf WilsonRalf Wilson3 päivää sitten
  • R-1234yf is still an HFC.

    pleappleappleappleappleappleap3 päivää sitten
  • New York City has several large district steam systems. They are not growing though.

    pleappleappleappleappleappleap3 päivää sitten
  • There's also gas-powered heat pumps. You might want to make a video...

    pleappleappleappleappleappleap3 päivää sitten
  • heatpumps are worse than gas boilers, i would never use a heat pump.

    gameplayer1188gameplayer11883 päivää sitten
  • 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 McGillivray4 päivää sitten
  • "......IM PUMPED FOR IT!" 10/10 for heat pump based PUN EXECUTION

    MisFit ChitMisFit Chit4 päivää sitten
  • 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 koning4 päivää sitten
  • haha yeah capitalism sure is great!!!!!!! best joke i ever did

  • 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 Kat4 päivää sitten
  • I personally like the milder heat heatpumps provide than the oven like heat furnaces outputs...

    O!TechnologyO!Technology4 päivää sitten
  • The "But Sometimes!" Is back!!!!

    Christian TemelkoskiChristian Temelkoski4 päivää sitten
  • 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 Harris4 päivää sitten
  • 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 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) The videos are cool. I'm 50 yrs old so some of the old tech you review are fond memories!

    hackfreehvachackfreehvac4 päivää sitten
  • 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 Bol4 päivää sitten
  • 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 FIworld app but still see all the best creators who I have grown to love. Thanks in advance.

    Chris MilesChris Miles4 päivää sitten
  • 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.

    wrtlpfmpfwrtlpfmpf4 päivää sitten
  • Heat pumps don't really work all that well if you are using oldschool radiators.

    Hobbes TigerHobbes Tiger4 päivää sitten
  • 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...

    TikkaQrowTikkaQrow4 päivää sitten
  • Lots of systems slam the reverse valve while running because 'planned obsolescence'

    TikkaQrowTikkaQrow4 päivää sitten
  • 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 Wuollet4 päivää sitten
  • Intellectual Property is literally government-granted monopolization of ideas.

    chbruleschbrules4 päivää sitten
  • So why is the heat output of my fridge not being pumped into my hot water system and tumble dryer?

    Pete SmithPete Smith4 päivää sitten
  • I have two ground source heat pumps I've installed. The one in my shop has saved my business thousands of dollars.

    amphibiousmarineincamphibiousmarineinc5 päivää sitten
  • Kudos on the TMBG reference!

    dcseaindcseain5 päivää sitten
  • 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 T5 päivää sitten
  • You like hybrid water heaters?

    Stove GuyStove Guy5 päivää sitten
  • Can we get heat pumps hot enough to boil water?

    David WilliamsDavid Williams5 päivää sitten
  • is this a real video or april fools? before i watch xD

    who diswho dis5 päivää sitten
  • Great video

    Brian FaulknerBrian Faulkner5 päivää sitten
  • 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.5 päivää sitten
  • 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 Westra5 päivää sitten
  • I just watched your video on automotive signal lights and it struck me - you're FIworld's Andy Rooney

    Stephen ManaryStephen Manary5 päivää sitten
  • 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

    diez66diez665 päivää sitten
  • 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 Extarys5 päivää sitten