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Last seen: Jun 6, 2026
@goody I can only assume you had a terrible install? My heat pump is much cheaper to run than the gas combi I had previously and my house isnt very we...
@alfapat So the problems you have are that your house has a large heat loss (Im assuming it is a big house), your system was designed to run at a h...
@alfapat so buffer tanks act as a big roundabout for the water. Flow comes in from the heat pump and back and water goes to the heating circuit and ba...
@alfapat OK. thanks for the information. It looks like your system was designed to run at 50C when at -4C outside. The yearly electricity use for s...
@alfapat Sorry, missed the (large) tank comment 🙂 OK if the original install was for 25 kW then the 16 kW alone probably isnt oversized, but it su...
@alfapat Thats the document! unfortunately I cant read it from the images, they are probably compressed for the forum. I will pm you my email address,...
@alfapat So you should have been given the heat loss calculation when you had the heat pump installed. It has to be done by the installer. I think t...
@johnnyb So here is a day where I was cycling although not frequently The interesting bits are just as the heat pumps starts up again. Flow temper...
@johnnyb If its PWM controlled you should have two cables running to it, one for power and the other for the optional PWM control. Not all pumps can d...
@mike-h @johnnyb @technogeek So my pump is PWM controlled from the control box, but I dont know if the thermostat controller influences that at all....
@alfapat So thats a big bill! I cant help thinking that given the insulation you describe, you should be doing a lot better. Can you find your suppose...
@alfapat So the absolute flow temperature isnt important. Just how it makes the room feel. If its been 15 hours and you still havent made the desired ...
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