This Heating Tech Breaks the Laws of Physics?

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Great You Tube video with simple explanations that can be followed. Back in 1976 I moved into my first property, a Victorian flat (apartment). There was a sealed cast iron tank around 12 by 12 by 24 inches buried in the upper part of the chimney. Heat from a coal fire would provide hot water there was no pump simply due to the convection effect of having 2 inch diameter pipes. There was no thermostat either presumably it was not too close to the actual flames to overheat the water. It was fed from a riveted zinc water tank that had an open top end to allow for any pressure build up. No moving parts, no need for electricity or physical controls anywhere, Victorian Geniius!

The simple fact of the matter is most houses/ buildings across the entire world are in desperate need of a better exterior building envelope, i.e. insulated windows, VASTLY more insulation and better air sealing. This will DRASTICALLY increase the efficiency of ANY heating/cooling system. Also, proper building practices such as only having ductwork in the conditioned space rather than in the attic or crawlspace will help as well!

HVAC Contractor here... Thank you for putting out this information for people. I think it's great. One thing I'd add is we actually have natural gas furnaces that are well over 90% efficient. They have a secondary heat exchanger that recycles the flu gas to pull more heat out of it. The end product is condensate and very little heat loss. If these systems are installed properly they can be great. Thanks again

As a refrigeration mechanic this takes me back 37 years to tech school 😊

Love your take on topics regarding EVs and renewable energy. We downsized in 2012 to smaller home, eliminated the new natural gas Furnace/Water Heater, and replaced both with electric heat pump and heat pump water heater. We have never regretted that decision. We also added 13.2 kWh solar PV system complemented with two PW2's in 2018, which enable us to operate independent of grid for ~9 months of the year in Edmonds, WA. We also produced 350% of our electricity needs for all electric home last year, which included charging two Tesla's (MS and M3), and exported >50% of our excess electricity back to grid.

We got a mini-split a couple of years ago and really like it and our bills! And now I know how it works, thanks Ricky!

I've been an HVAC/R technician and educator for 29 years, and this is the best non technical explanation of the refrigerant cycle and heat pumps I've ever seen on YouTube, good job! Re. back up sources of heat, I've got an inverter driven variable capacity heat pump backed up by a multistage gas furnace. The furnace is cheaper to operate here in Texas, but the variable capacity heat pump is more comfortable heat delivery in our mild winters. The furnace is good for especially cold weathers, and since I can supply its electrical needs with just a small 500w generator, is handy during a power outage. Amusingly, I was completely prepared for loosing power during the big freeze, but never did.

My father worked on refrigeration systems for dairy farms as a sideline while I was growing up, so I've known about heat pumps systems since I was about 6. I also learned about Geothermal from a Mother Earth News article in the 70's. So I knew all about all of this before I clicked. Got to say you did an excellent job presenting this material! Apparently the efficiencies have changed. We always used to say, " put in 1 unit of energy and draw out 3 units of heat" (or negative heat as the case may be). I suspect the efficiency increase has a lot to do with both more efficient compressors along with the interface between the heat exchange materials. Even though I came into this video with a thorough understanding of the subject matter, you STILL kept my interest AND taught me something along the way! Well done Maestro!

Good vid, thanks. I'm here to say we've been on a 3 ton geothermal system (forced air) for ten years in Upstate NY, USA and it's been great, and probably the best investment I've made in our home. Only thing lacking is the ducting for the house that looks like it was done by 5th graders; an ongoing work-in-progress to patch it up, find blockages and breaks. Anyway we recycled the air circulator from the air-source heat pump we inherited, and replaced it with a ground source heat pump and a couple underground runs of something like PEX. Air is always comfortable (68F heated and 74F air conditioned) regardless the outside temps, which could be anywhere between -15F to 100F. And it makes all the noise of a modern refrigerator, but in the basement.

Thank you Ricky. Also thank you Michael Faraday for first noticing and recording the refrigeration cycle. I think the fluid he had was ammonia. He didn't drop everything and start an air conditioning or refrigerator business though. He simply wrote that this could be useful in future as a refrigeration system and moved on to study the next interesting thing.

Because I work in the industry, a couple of corrections. You mentioned that gas fired furnaces are about 70% efficient. Gas fired furnaces that have a standing pilot light were 70% efficient and they aren't even manufactured today because they don't meet today's efficiency standards. Also, the furnace that you did show at 12:44 is a high efficiency furnace, looks like a Lennox model EL296, and is extremely efficient. Notice the pvc flue? By the time the combustion gases reach the flue they are cool enough to vent through pvc rather than double wall metal that still gets very hot on 80% efficient furnaces. Another issue. Most clients that I have that were accustomed to a gas fired furnace are sorely disappointed with the performance of heat pumps unless they have auxiliary heat strips and a thermostat that can be programmed for comfort, meaning the heat strips will be energized quickly to assist the heat pump but the system does cost more to operate. The big reason for the disappointment is that furnaces blow hot air and heat pumps blow warm air. Therefor, when it's cold, heat pumps will have very long run times while a gas furnace will cycle on and off due to it's ability to quickly satisfy a thermostat. Heat pumps and mini splits do have situations that are appropriate like a small addition to the house such as a sun room, basement or in-law suite. However, heat pumps also have other drawbacks such as more electrical and refrigerant cycle components to fail.

I'm almost as obsessed with heat pumps as Technology Connections

Heating your house to 76ºF and you are still wearing a jacket? I cracked up laughing at you when you tripped on the corner of the rug and your popcorn went flying! I am so sorry, but you did a fantastic dramatic opening scene to this video.

Another great video. I will be hitting the like button fairly often on your content. I might have to advocate for this channel within my pool of family and friends so that you get the views and the likes your content deserves.

I'm starting to explore geothermal heat pumps and your excellent presentation has gone a long way in helping me grasp the concept. Keep up the good work!!

Great work 2 bit! Liking your style and eloquent flowing presence

Thank you so much for this clip, heat pumps are pretty much a step in the path to a more environmental friendly world, we (living i Sweden) have had a Geothermal pump since 2008- it was soo nice to trow that stinky oil cooker away, and put a nice silence high- tech thing, that looked just like another fridge in the house. We have two 100 m holes (330 feet) and a 9 KW pump. The very nice thing with this is that in the summer we are reusing the flow of Brine which goes into the holes (a alcohol/water mixture, that doesn't freeze in temperatures over -40° C, in our case) - meaning we just pump it through our fan enhanced radiators, getting could air for (almost) nothing, the brine is never warmer than 13°C, meaning that the radiator deliver that temperature(in ideal circumstances), the circulation pump is 4W and the radiators fans are somewhere around 1W/radiator... meaning pretty cheap cooling.... And we put some energy down into the holes for next winter.... Love it!

Great vid, and thanks. I finally grasp the refrig cycle after years of trying. One thing. You seem to say that in a resistance heater what you can't see isn't doing anything for us. But that infrared we don't see heats anything it touches, right? Maybe not the air, but us in the room it does. You can't see the radiant heat from your stone fireplace after the fire dies down, but it warms the bottom just the same.

Hi Ricky. Thank you for an easy to understand and well presented explanation of the refrigeration cycle and how it is applied in the heat pump.