5kW R410a Ecodan PUHZ-W50VHA2(-BS) maximum output testing

[ColinS (Colin Smith)]

ASHP sizing for Freezing Conditions

[image] I was hoping my Daikin would perform better this Winter with a full suite of well sized radiators and set up sorted out but I was disabused yesterday when it cycled as rapidly as it has ever done. … and just at zero c and not much lower. Humidity was not that high - around 80% so in line with the standards - seemingly destroying my theory that saturated air was the cause of the problem. The unit was driven to it’s limit of output as my house was warming up from 11c after we had been a…

If it helps - I put some data on another thread for the last 24hrs from a selection of heat pumps showing rapid defrosting…some similarities in min cycle time across three brands…