Heat Pumps: the Future of Home Heating

  Views 1,058,202

Technology Connections

Month ago

It's so cold that it's hot.
Part 2: usposts.info/vision/bN_Y3I_GaayEi9Q/video
I referenced a lot of old videos in this one. Here they are, in clickity linkity form!
Chest Freezers; What they tell us about designing for X
Old-fashioned rice cookers are extremely clever
Reusable handwarmers that get hot by freezing
I also made passing references to
Forced-air Furnaces: The What, Why, and How
Portable Air Conditioners - Why you shouldn't like them

Technology Connextras (the second channel that stuff goes on sometimes):
Technology Connections on Twitter:
The TC Subreddit
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Technology Connections
Technology Connections Month ago
Hello! Here's a comment with some extra info on efficiency and the metering devices used in heat pumps. First: my wording on the efficiency drop in the cold was sloppy, and it sounds like I'm suggesting the need for defrosting is the only reason it loses efficiency. It is _a_ reason, but not the biggest one - that's simply that as the outdoor temperature gets colder, it's harder for the refrigerant to absorb heat because the temperature difference between it and the air gets smaller. In fact, in the clip when it was -10°, it wasn't building much frost at all because it was very dry. But that was so cold that the refrigerant could barely capture any energy, which is why its output was tepid. And to be clear, its rating down to 5° doesn't mean it operates at full efficiency at that temperature. That's just the lowest temperature that it can sustain its rated heating output. Re: metering devices. I still somewhat suspect that the mini-split has a capillary tube and largely because of its cost. It was surprisingly inexpensive (this unit was about $1000, but the smallest units from this same manufacture only cost $750 and are fully capable heat pumps). If you use a thermal expansion valve or similar, you need one for each direction which adds to the system's complexity somewhat. I'd still argue that it hardly does - it is, after all, one or two small components of a large system. But simply reversing the refrigerant flow doesn't work on its own in systems that use these more complex metering devices. They'd need some additional piping and valve work (some such valves were visible in the demo rig) to accommodate two metering devices for each direction of flow.
Jason Dolph
Jason Dolph 5 days ago
I was super surprised when I first moved to Japan and EVERY air conditioner was also a heater.
LTVA 8 days ago
@melskunk central heating is a big system where water is heated by power plant or similar building that is built specifically for it. Then this water travels via pipes to houses and goes through radiators, cooling down and heating up rooms.
melskunk 8 days ago
@LTVA wait what is the difference between a furnace and central heating? We call our home furnace our central heating
Ethan Nichols
Ethan Nichols 8 days ago
Could you turn a window AC to be outside and heat your house or room technically?
汪波 8 days ago
Our company It is a scientific and technological enterprise specializing in the R & D, production, sales and service of solar energy, air source heat pump hot water, heating and refrigeration engineering systems. It is the development and cooperation unit of Zhejiang Energy Research Institute - new energy source. The company won the title of Hangzhou high-tech enterprise in 2010 and ultra-low in 2011 The warm air source heat pump unit project won the national science and technology small and medium-sized enterprise innovation fund project award, and won the new industrial product award of Zhejiang Province. Also we want to find some partners or agents,If you are interested, we can communicate this matter。my e-mail: fexur@foxmail.com
Apollo Hour ago
Great video brother! Quick note on 14:59 - The metering device on a MS is usually a capillary tube unless it’s more efficient and then you would have a thermal expansion valve of some kind or electronic expansion valve. However they are not located in the indoor unit they are actually located outside on most occasions.
O!Technology 5 hours ago
As far as I know the metering device in minisplits are in the outdoor unit.
lostc0z 9 hours ago
Would you be willing to expirement using a generator for the power source and use a heat pump window unit vs a quartz infrared space heater and show us the results?
Nicholas Jones
Nicholas Jones 13 hours ago
Haha dope B roll hahaha
lostc0z Day ago
It sounds like you're saying that a heat pump produces a over-unity for heating. Are you saying that the power plant miles away burning natural gas is more efficient than heating with a fireplace or natural gas furnace on site. Isn't their loss in powerlines and conversion losses from burning gas to boil water to turn a turbine heck they have to pump the water to boil how much energy was used for that? A gas furnace is using a blower motor for it's electric needs but a heat pump is using that plus a compressor several sensors and electronics. Let me tell you what savings you'll have with a heat pump water heater. None. Upfront cost - High, Plumber - High, + now you need a HVAC Tech - High, It affects your homes heating system costing you more, needs a drain for condensation. It falls into regular resistance heating with heavy usage or everytime it needs service and Techs are so expensive no one gets it serviced so shame on owners for not maintaining it. It works on paper not in reality. High Maintenance costs are the problem with technology and only the rich enjoy these impractical clown engineered devices. Most improvements in vehicle fuel efficiency came from weight reduction and turbochargers. A drop of fuel will always contain the same amount of power as it did 50 years ago and probably 50 years from now.
Michael Hill
Michael Hill Day ago
Unless you find a way to produce electricity considerably cheaper than it currently is, I suspect home furnaces aren't going anywhere (in the US anyway). The rated seasonal heating efficiency of these systems are very optimistic and assumes a climate similar to that found in Dallas Texas (where it might actually make economic sense to use them). In heating dominated climates, heat pumps generally cost much more than a natural gas furnace due to the fact that natural gas generally costs about 1/3rd what electricity does per unit energy (in the U.S.) and the COP over the heating season will be less than 3, even for "high efficiency" air-to-air heat pumps. Also, heat pumps decrease in capacity as outside temperatures drop, so you'll also most likely need a source of backup heat unless you want to risk freezing your house and bursting the pipes carrying water and sewage. Aside from what I already mentioned. It would almost certainly put a strain on power grids in heating dominated climates. Heat pumps are generally less efficient in heating mode than cooling mode and more heat is required, meaning that winter peak electricity demand would exceed summer peak electricity demand. To summarize, aside from requiring an overhaul of the entire electricity grid, costing you more money to condition your home, and potentially causing extremely expensive damage to your home (and freezing the occupants of said home), it's a brilliant idea. Hey, Elon Musk said it so it must be true! He's the genius who "invented" the "Hyperloop", Electric Cars, and Space Flight single-handedly.
B00rish Day ago
147 degrees C out of an air con unit inside the house'? could fry food on that o.O lived and worked in Greece for 5 years previously, all air con out there (UK origin, no aircon), pretty sure around 30 was normal on the units?
SmoothMechanic Day ago
I’ll just grab some uranium for heat.
DAN8137 2 days ago
I have 2 indoor units and 1 outdoor. What happens when I set one of my indoor to heating and one to cooling?
Freddo Flintstono
Freddo Flintstono 2 days ago
Heck, I had reversible ones in Malta. That gets never below zero as a result of a very large moat (it's an island), but when it's 10ºC outside you're very happy they cam reverse their summertime job (where it can go from 23ºC night time to > 35ºC as soon as the sun goes up).. Nice article, and sensible logic. Thanks for this.
Kenneth Kossan
Kenneth Kossan 2 days ago
Wehad one in Minnesota in the seventies already..
Sergeant 2 days ago
A CoP of 2.9 in ideal, test conditions? So a CoP of 1.0 at home if you're lucky.
Artur H
Artur H 2 days ago
In the book of Isaac Asimov foundation, the planet Trentor was heated like that. He wrote it in the Nineteen fifties.
frank rizzo
frank rizzo 3 days ago
Just an FYI about GSHP in urban areas. St. Patrick's Cathedral in NYC has installed a huge Ground Source Heat Pump System to provide ALL heating and cooling . The Abbey in Bath, England has also installed a Ground Source Heat Pump plant. Your information about Ground Source Heat Pump installs are not accurate!
NightChime 3 days ago
"Not rated for under 5 degrees." So, perfect for me here, in California, but this is still news to me!
Jami Blankenship
Jami Blankenship 12 hours ago
I can say with all honesty, if you are in a part of the state that does sometimes, even rarely, get a cold snap have a backup heat source available. My family had mini-splits in our apartment in south-central Pennsylvania. Not an area of this state known for the type of cold and snow you see along Lake Erie or towards Pittsburgh or State College. But for those few days in the winter when the temperature would start hanging out perpetually in the 20's the units did almost nothing. If the temperature got below 15 they stopped working completely. We ended up supplementing the heat with an electric fireplace that doubled as an entertainment center.
Brad Ryan
Brad Ryan 3 days ago
Future? I’ve had a heat pump since 1986
Ergzay 3 days ago
-8C is kind of too warm for most environments in the US. It gets much colder than that in winter.
WASH WOMEN 777 4 days ago
Let me tell you something the new world order for a 100 years now have been making people believe they need sticks and bricks, know you need dirt you need the dirt to keep you warm you need the dirt to keep you cool , look up Michael Reynolds look up earthships, look up straw bale homes it look up. The truth green is the earth.
William Richard James Nicholson
William Richard James Nicholson 4 days ago
You're a bit behind the curve on this since heat pumps have only been used for about 50 years now ! ! To present this as if it is recent development is ridiculous. Only a dolt would believe this is a notable subject. What next , are you going to tell us the new development of blending color of exterior machine unit to building color by using spray paint on their cabinets ? ? I have unit hidden by blending green spray painted exterior unit to match the green of the hedge that surrounds the perimeter. Entire house looks better this way . Is that also an item to make another useless video about ? Lose some weight , go get outside & do something useful without the need to bother anyone else .
Car Parking Multiplayer
Car Parking Multiplayer 4 days ago
This would be amazing in the uk! Why is nobody talking about this? This would be a big hit with newly built homes, since here it’s rarely freezing but heating is almost always required!
Vykintas 2 days ago
Somehow the UK is always very late to adopt new building technologies- it seems that double glazing is still a new thing there! When I lived in Scotland, a local architect, who lived in Germany for a while in the 90s, was furious while telling me how British architects and builders are still building traditional looking houses with single glazing and hardly any heat insulation, and thus the occupants of these houses then have to turn up their gas heating high to stay warm. It's a good thing gas is cheap in the UK, but it won't be like that forever :/
WantEpicMusic 4 days ago
My dad is an electrician and refrigeration mechanic here in Australia, so I knew about reverse-cycle air conditioning from a broad overlook perspective, but this video went into a bunch of detail that I love! Thanks for being my favourite tech nerd youtuber!
Mahmoud Ezz
Mahmoud Ezz 4 days ago
I absolutely love how educational your videos are and your angle on things but please work on making the videos shorter or a bit more energetic as it's not easy watching the entire video despite my interest in the topic May you always have more success
Michael Naso
Michael Naso 4 days ago
boy he loves refrigeration
Marcin Kościelny
Marcin Kościelny 4 days ago
Here in EU heat pumps are popular, especially with solar heat and electricity, as they allow you to scale down photovoltaic installation. You get quicker return on investment if you combine these three. Not to mention the reduction of emissions, which will be huge even if you rely on coal power. During the coldest days just run your cryptominer to keep you warm ;)
Davit prtterson
Davit prtterson 4 days ago
The plucky cub partially carve because zone successively interest apropos a tricky mice. unable, anxious glockenspiel
Quixote 4 days ago
"Reverse the polarity of the refrigerant flow!"
Munk Puppy
Munk Puppy 5 days ago
my parents live in southern Canada, and they also have a heat pump that works quite well. They are really efficient!
James Jin
James Jin 5 days ago
stronger pipes & valves with better coolants would allow this to work more efficiently in extreme weather conditions
- 5 days ago
He's right, every winter I turn my window A/C unit around so the cold blows outside and the hot side is in my apartment.
JetpackDino 5 days ago
This reminds me of a really cold day from school. I live in Australia, so we only used the ac to cool a room. So in this scenario, no one even thought to turn the ac on. A few teachers started bringing heaters in before someone said something lol.
Rob Schofield
Rob Schofield 5 days ago
That's about the clearest explanation of this subject I've heard. A very good video indeed!
Caleb Reetz
Caleb Reetz 5 days ago
Hey! I know exactly were that is! Went to school at FRCC!
Simon Munch
Simon Munch 5 days ago
how much did Pepsi give Pioneer to include there logo ;)
Sophie Robinson
Sophie Robinson 5 days ago
Lolan 6 days ago
Rip the average winter day for me is -26c. Warm days are -17c cold days are -50c
MediaMatters IsMyCockHolster
MediaMatters IsMyCockHolster 6 days ago
The Texas Big Freeze of 2020: I know of a large company that replaced their Propane based HVAC system with a heat pump system that was all electric, and guess which one failed, because Heat Pumps lose efficiency as the temperature drops? Sure, you can get add on electric elements for heat in the system, which works great, right up until either A) the power bill gets jacked up thousands of dollars, or B) the power goes out or into rolling blackouts, and regardless, you are still a slave to an electrical utility, and with the likely potential of higher bills even when working within 'normal' temps, or a blackout whenever they need it. With propane or natural gas, it's easier to run minimal systems with a backup generator of some sort. One of the owners who approved purchasing this technological trainwreck stated that they had researched it first.. on USposts.
Stormspark 6 days ago
I'm getting a Tesla Model 3 soon-ish (month to a month and a half or so). And...guess what it has! The AC in the car is a reversible heat pump.
Ian Benavides
Ian Benavides 6 days ago
This connection of videos makes all of this science make more sense!
Marcin Dżamroga
Marcin Dżamroga 6 days ago
Teletext video?
lollopingnoob 6 days ago
My family recently built a house - as in in the last year - and we got an air source heat pump. Shits crazy
Ed Aten
Ed Aten 6 days ago
Why don’t carbonated beverages cool themselves as they decarbonate?
Rolph Finkin
Rolph Finkin 6 days ago
Your audio is decent, but please run it through the "de-esser" in audacity to kill some of that sharpness in your "s" sounds. When I turn volume up, there are major volume spikes on your s's and it's almost painful when the rest of the vocals are just nice and audible, not 'too' loud.
Axe 001
Axe 001 6 days ago
"What if I were to tell you that all of the energy you need to heat your home on a cold winter day could be found.. outside?" Me:Bullsh*t.
George Loyie
George Loyie 6 days ago
As a payer of ridiculously high heating bills in Canada, this really caught my eye! So I googled it a bit... Here's what I got: For climates with moderate heating and cooling needs, heat pumps offer an energy-efficient alternative to furnaces and air conditioners. Like your refrigerator, heat pumps use electricity to move heat from a cool space to a warm space, making the cool space cooler and the warm space warmer. (As cold as it gets here, well it gets just as hot in the summer, not very moderate) Drawbacks of air-to-air heat pumps are: regular maintenance is required (cleaning the filter on the indoor unit) and a service check every 2-3 years. loss of efficiency as temperature decreases below 6-7ºC (but some models can still provide heating in temperatures down to -15ºC) (So in Canada, where winter temps get as low as -40C, this will require either another unit, or wood heat to take up the slack.) How much will my electric bill go up with a heat pump? $50 to $100 per month. (So I guess I won't be buying one, shucks!) Heat Pumps will raise your electricity bill - but lower your costs for other heating fuels. Each single unit (often referred to as a one-to-one) heat pump that is used daily will increase your electricity bill by $50 to $100 per month.
Withnail1969 6 days ago
What a load of mumbo jumbo. It's against reason to think you could efficiently warm up your home with air that's a lot colder than the air indoors. Can't possibly work without using loads of electricity. It is most certainly not going to be more energy efficient than just burning gas onsite to fuel central heating.
betaneptune 6 days ago
Nice video. Less repetitive than others. But temperature is not the "concentration of energy." You can have boiling water, with the liquid and gas phases at 212 deg. F. Both are at the same temperature, but the concentration of energy is much higher in the liquid.
BlackSmokeDMax 7 days ago
Any idea of the efficiency of that similar outside unit north of you? Next time i have to replace mine is certainly love to consider the option.
Ken Mason
Ken Mason 7 days ago
Okay I know you're all talking and stuff but I'm diggin' that sport jacket yes...yes, it's rather snazzy. A big huge gaudy yellow gold ring on your little finger . That's all that jacket needs. Come on. You know I'm right. A good CHUNK of gold, HEAVY. A ring that says stuff. Yes. A ring that makes people say "What the HELL man!?"
George H
George H 7 days ago
2:11 I love the dubbing. I have seen movies with worse dubbing. "'Yippee Ki-Yay, Mr. Falcon" (done for American TV censorship, but some dubbing in theatrical releases was bad too)
True River
True River 7 days ago
3:00 Welcome back to your chest freezer; star of an earlier video :)
hwd71 7 days ago
So its like a portable air conditioner which blows the hot exhaust air inside instead of out the window?
Rodrigo Madera
Rodrigo Madera 7 days ago
Incredible content, as usual. It’s rare to find such production quality filled with solid engineering knowledge. Definitely one of my favorites on YT.
Tom Turnbull
Tom Turnbull 7 days ago
We have heat pumps in the UK. I used to work for a company that installed them underground.
OlTrailDog 7 days ago
In western MT I heat my 30x40 well insulated home with one of these heat pumps except for when it gets below around 5*F. I don't bother to use the air conditioning cycle in the summer as I just open the windows in the early morning and close up the home during the hot part of the day.
PauleraBR 7 days ago
Incredible, you managed to make me understand this. Wow, that is quite an accomplishment, thank you.
Darius Varno
Darius Varno 7 days ago
meanwhile i'm watching this video with an axe near a pile of wood :))))
edgeeffect 7 days ago
Why has no one made a refrigeration system and named it "Maxwell's Daemon" ???
Lucky 13
Lucky 13 7 days ago
"Air conditioning has been standard in American homes for over 50 years." You are showing your privilege, here, son. Make that 30 years, and you would be correct.
Ce1es 7 days ago
ok, so does this mean when Tesla announced they put a heat pump into their Model 3 that they just added that little reverse valve and piping thingie? Because the rest was already there being the A/C system that comes as standard in basically every modern car. [edit] that's exactly what you point out in the next one, nice :) [/edit] Also the fact that this system can have an energy efficiency above 100% blew my mind.
Matthew Byrd
Matthew Byrd 7 days ago
The “future of home heating”? Really? Heat pumps have been around for a long time.
adaptiveplexus 7 days ago
I thought you lived in Orlando FL, I guess you moved up north
muten861 7 days ago
What you propose is in Europe standard. MURICA f###k yeah!!
IronLion219 7 days ago
This is an awful explanation of refrigeration.
Dunwell 8 days ago
I had no idea I was interested in this stuff. Maybe I should go into the HVAC trade.
Steve Larsen
Steve Larsen 8 days ago
What FLIR camera are you using?
David Rumming
David Rumming 8 days ago
Wow. First up....those split air AC systems are getting retro fitted to many buildings in U.K.....such as workplaces, dentists, doctors surgeries. As for heat pumps, the aim of U.K. gov is to have all new buildings + replacement systems be heat pumps (or alt simply electric heating) in 10y from now. Currently most buildings are heated by gas - not the stuff you put in automobiles, but the gas they dig up from under the sea and pipe it to buildings. Are heat pumps really that reliable...seems to be lots of plumbing in the system.
Walter Burton
Walter Burton 8 days ago
Guilherme Trojan
Guilherme Trojan 8 days ago
Bepis 13:25
Human Sh!tpost
Human Sh!tpost 8 days ago
I'm going to trade school for HVAC and Refrigeration. Its pretty cool seeing one of my favorite youtubers talking about it
R 8 days ago
Heat pumps have become a relatively commonplace method of heating homes in New Zealand.
King Masterlord
King Masterlord 8 days ago
quick question, can we use electrolysis to build pressure without an electric motor? doesn't have to be electrolysis, all it has to do is be less energy intensive than running the compressor and cause out gassing.
Yoda'sFreetimeIsSpentHere 8 days ago
Your mic eq really makes the S sound of your speech hurt my ears
xFuaZe 8 days ago
In the Netherlands we have homes running sololey on heat pumps, no gas or electric backup. We use water-to-water heat pumps with heat recovery and (efficient) low temperature floorheating. Since ground water doesn't change too much over time; the heatpump is very effective all year through. Installation costs are pretty high; but to be connected to gas, you have to pay a monthly fee. Also; you're only using electricity and when combined with solar panels (and triple isolation); we can create practically '0 emission'. It really helps that the Netherlands doesn't have extremely harsh weather though, but water/water heatpumps will be much more effective in the US. Looking forward to part 2!
TheVaf 8 days ago
Soooooo, then the most efficient system would be to connect your gas burner to a small steam turbine, all kept inside so you don't waste heat, that produces electricity to run a heat pump XD
AYAN DAS 8 days ago
I think you explained it in a far more complicated way than possible.
notanotherpyro 8 days ago
What if someone made a heat pump that had something inside the house insulated with a high thermal mass that could be used to store heat. So when the heat pump is working at peak efficiency, it could store thermal energy for later.
soap0688 8 days ago
I like how that inverter's logo just casually incorporates the Pepsi logo.
Joseph Keenan
Joseph Keenan 8 days ago
All those problems can be solved by closing the alternative power plants and replacing them with clean and safe nuclear power.
Phil Martin
Phil Martin 8 days ago
At 17:30 is that just a horrible photo or is that wall-mounted unit really that crooked?
pafnutiytheartist 8 days ago
The card didn't get summoned 😭
Fedupwithfed forever
Fedupwithfed forever 8 days ago
Its a lie....sure heat pumps are great in the southern US......but let's see it work in Minnesota in January.....It WONT trust me ...Ive been in HVAC FOR 30 YEARS !
echo Awoo
echo Awoo 8 days ago
IAE bothered by the obviously not level outdoor unit ? Like no crits, TC, but that is driving me nuts lol.
msr47gaming 8 days ago
Don't cars a/c systems do this?
Tomas Av.
Tomas Av. 8 days ago
best heat is gas heating. clean cheap, no worries
Andrew Littler
Andrew Littler 8 days ago
Sturm 8 days ago
Greetings from Russia, the land of natural gas.
Belle Pullman
Belle Pullman 8 days ago
.... Sold! I'll take it!
Aaron Talbot
Aaron Talbot 8 days ago
fascinating stuff
Timothy Crowther
Timothy Crowther 8 days ago
Verbose refrigerator
Amin Abu Dahab
Amin Abu Dahab 8 days ago
I don't need to go to school after watching this 😄
汪波 8 days ago
Our company It is a scientific and technological enterprise specializing in the R & D, production, sales and service of solar energy, air source heat pump hot water, heating and refrigeration engineering systems. It is the development and cooperation unit of Zhejiang Energy Research Institute - new energy source. The company won the title of Hangzhou high-tech enterprise in 2010 and ultra-low in 2011 The warm air source heat pump unit project won the national science and technology small and medium-sized enterprise innovation fund project award, and won the new industrial product award of Zhejiang Province. Also we want to find some partners or agents,If you are interested, we can communicate this matter。my e-mail: fexur@foxmail.com
Alexandra Koretsky
Alexandra Koretsky 8 days ago
Future? Like every other house has them where I live (New England).
JJ Harris
JJ Harris 9 days ago
The first 30 seconds of this video have thoroughly convinced me that you would be a brilliant infomercial host.
foodie nick
foodie nick 9 days ago
i'm sure this is not the case for all units, but many cooling only units have all the necessary parts for heating and buying a new remote control that has a heat button can unlock heating features. i assume they make all the units the same to make economy of scale savings (making all units identical saves money in the manufacturing process) and only lock these features on cheaper units to artificially inflate the retail value of heat and cool units. i discovered this when i moved into a property with ac units without built in controls, i purchased a cheap multi remote from amazon and the units were able to cool and heat. i took the remote to work where we had a cool only unit and using my new remote i was able to heat with the cool only unit.
Brian Gamble
Brian Gamble 9 days ago
When I was a kid in the 70s, my parents had a 60s vintage Kelvinator refrigerator. It used a process similar to a heat pump to defrost itself. A few times a day we would hear a shhhhh sound as the refrigerant would reverse flow. Occasionally, the mechanical timer would fail but otherwise, it was a good refrigerator.
ocean-drive slim
ocean-drive slim 9 days ago
Anyone know timmy from WKUK? But this guy's brilliant
rhuttrho88 9 days ago
Put on some clothes!!!!😡
Myrodin 9 days ago
Frack i missed this a month ago. Time to watch part one now that part 2 let me known part 1 exists
Kevin Hanes
Kevin Hanes 9 days ago
I think Tesla uses heat pumps in their cars
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