HughF Posted April 14 Share Posted April 14 (edited) Gas out, ashp in - house is warmer, larger and comfier for a little less per annum… And I don’t need to pay a gas-safe guy to mess with it, and we can get rid of the combustion appliance inside the house . Win-win… 1946 end of Terrace, on a hill, facing SW, 50mm cavity… it could cost Me £500 more per year and I wouldn’t care, it’s a superior way to heat a home. As for which one to install, one where the room controller/thermostat will adjust the weather comp curve for you instead of just turning the unit on/off. So Vaillant or Mitsubishi. Edited April 14 by HughF 1 Link to comment Share on other sites More sharing options...
PNAmble Posted April 14 Share Posted April 14 We went round in circles re trust; designed to passive insulation and airtightness; but an upside down house which meant that an insulated slab/UFH solution wasn’t suitable. Large (ish) North and South windows due to views In the end we’ve gone for a few radiators, single zone, assumed 35/30 flow rate @21/-3 which worked our at 3kW peak so a 5kW ASHP (R32) and PV running WC made sense. Worse case scenario we can push the flow rate higher with minimal impact on COP or just buy another dog. 1 Link to comment Share on other sites More sharing options...
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