Hi @Cold On your other thread you said the radiators felt cold. Do you know where in the system this graph data is coming from? ie is any of that heat getting to your rads?

I believe the left one im pointing to is the return sensor and the right one is on the copper diagonally right from my hand.

Also, when I touch the in-pipe it's hot to the touch.  One would assume this would be reasonably the same at the pipe leading into each rad ? 

Is this kit in a garage ? All that pipe work should have proper insulation on it. Maybe the heat is getting lost before it gets to your radiators. When you’ve had it serviced this should have been mentioned. I would suggest you get a heat pump engineer who can give you specific advice about the system. Your best bet would be to look for a Heat Geek in your area, https://www.heatgeek.com/find-a-heat-geek/

No, it's in a old room in the house. But, yes ive been looking at heat geeks and they seem to be the next step. Cheers

Hey @Cold,

Keep us posted with how you get on! I hope this gets resolved ASAP. 

I wonder if these topic’s have any helpful tips: