DIY Laser levelling using webcam and laser level

[Clive S]

Here you go,
https://www.heatpumps4pools.com/prod...ol-heat-pumps/

"Excellent COPs – from 5.8 to 15.8 due to Inverter technology"

Thanks for the feedback. But it also states this

"Bear in mind though that there is no international standard for stating COPs and therefore each manufacturer will state the maximum COP obtainable for their units under optimum temperature and humidity conditions. In reality you may not therefore always acheive the COP rating stated."

I have been involved in installing a few heat pumps air source and ground source and I believe that they were in the region of about 3-4 to 1. My next door neighbour has had his gas taken out and put in an air source pump. I am very interested to see the results over time.