How a Heat Pump Works | This Old House

This Old House plumbing and heating expert Richard Trethewey instructs Kevin O’Connor on the basic principles of how a heat pump works.

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The heart of the heating and cooling system will be a heat pump. This Old House plumbing and heating expert Richard Trethewey uses a mock up and props to show host Kevin O’Connor the mechanics of the latest state of the art heating and cooling system. Heat pumps have compressors, valves, and fans that regulate speed and opening so a system can evenly maintain itself and keep temperatures steady to the exact degree.

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How a Heat Pump Works
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View Comments

  • If you could edit all of Kevin's comments out, this would be a much more informative presentation. When Richard is trying to explain an important point, the awkward "What, what" filler comes in.

  • Thanks for taking the time to build that model, it made it very easy to understand. Well Done!

  • You are amazing. I'm 64 and never understood this process, because nobody could ever explain it to me so well. Thank you so much :) Maurice

  • You’ve got it perfectly explained, I love the the enthusiasm

  • This is the best explanation for the layman. Other videos I've seen on this topic were too technical for my non-mechanically inclined brain. This video was perfect. Thanks.

  • Finally, after a week of runaround and sophisticated jargon, I heard just what I needed. Thanks, and I believe I am now a "This Old House" super fan.

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