When removing an old gas fire/back boiler is it ok to loop the feed and return pipes together, we are having a new boiler in the loft but using existing pipes for the radiators.
Thanks
The installer has finished the installation but something seems wrong, we have had a air source heat pump fitted in the loft and new radiators fitted but on the existing pipe work. but the radiators downstairs are not working correctly they take ages to warm up and then are patchy and hot at the top but only warm at the bottom and the conservatory one doesn’t get hot at all
.the upstairs radiators work fine