Comments by "Tony L" (@tlangdon12) on "How This New Heat Pump is Genius" video.

  1. You seem to be missing the point that an outdoor 'unit' is the only thing that can supply heat into the home or reject it if there is no demand in the home. There has to be something outside the home. It could be an air handler or a ground-source loop, but there has to be something that sits outside of the home. Ground source loops are great if your property has a lot of outdoor space, but for homes in urban areas air handlers remain the most compact form of outdoor unit to gather or dispose of heat that is not needed in the home.
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  2. The "secret sauce" is the software that manages the compressors to very tight tolerances. AI wasn't mentioned, but there is potential for AI to optimize the operation of a cascaded system even better than a human.
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  3. All this will come in time.
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  4. Due to the diminishing returns when installing insulation, it's very hard to design a home thatcan gather the heat needed to keep occupants warm in the winter, and yet not get too hot in the summer. The Passive House concerpt tries to do this, but even the best passive houses have some form of active heating.
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  5. Most UK homes have hydronic heating systems, and these were designed to run with the hot water at 70C. The pipe work and radiators can be too small for heatpumps to operate effectively. More modern hydronic system are designed for lower temperature flows to take advantage of condensing the exhausts gases, such systems are happy with flow temperatures of 45C, which is also fine for hot water if you have a large storage cylinder. Legionnella is generally not an issue in domestic properties, even if water is stored at 45C.
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