I am looking at replacing a 30 year old furnace with a heat pump on southern vancouver island. I am wondering if a desuperheater would work with an air source hp that would be heating 98% of the time that its on. As we get nice ocean breezes in summer, we would use less than 10 hrs/year.
I don't know much about the actual setup of a desuperheater but it seems the best way is to use as a preheater for the regular hw tank. My neighbour is replacing his hot water tank with gas and I may be able to use his old electric for the desuperheater. Has anyone seen any good sites that give a good run down of what the desuperheater looks like and how it gets installed. Since it isn't main stream up here, I'd really like to have a better idea about how they are installed properly. What sort of compatibilty issues would there be in signalling etc. with the hp thermostat?