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Cheers for the advice chaps :D

I need to add 2 new rads to a system in a three storey house. The house has a Ravenheat combi boiler in the kitchen and currently runs 5 rads. I need to add 1 rad to the top floor and one to the second floor. My plan was to t off from the rising flo & return pipes in the top floor and run 15mm...

I've got a radiator in the back bedroom of my bungalow that will only get luke warm now. Others all ok. This rad was fine before. Its on an open vented system. System needs balancing or an air lock? Advice please.

Thanks for the advice chaps.

other room, not able to do anything but chase out unfortunately!!

Any rules/tips on buried pipes? I need to chase out for my shower pipes. Is it ok/best to render/plaster over these once in place or are there better alternatives? Ideas/experiences welcome.

The boiler I have is a Ravenheat RSF 100ET fitted approx 6 years ago. I have done work on the system and I'm fairly sure there is no external bypass on it. I don't have a room thermostats on the wall either.

Can someone guide me on combi, or any systems for that matter. Do you need to have one rad (usually the bathroom) in the system without a TRV on it in case other rads are turned off and the boiler fires up? I have read that this seems to be the case. What has confused me is that I have a...