Hi, can I get opinion on whether you think a combi boiler (Vaillant ecotec pro 28) running 9 radiators in a three bedroomed house would be ok with 15mm copper pipework throughout? My rads don't ever get very hot. Advice would be appreciated. Cheers.
Traditionally it has been the rule of thumb that 15 mm can only supply 3-4 kW but updating to condensing boiler higher differentials would increase that to 5-6 kW.
A small modern house can easily only have a heat loss of 5-6 kW now.
"Not ever getting very hot" would imply a too low boiler flow temperature or the max CH power is set too low!
Hi, its a large 3 bed house with 2 reception rooms. Longest radiator is a double 9 foot long. 6 are long, and three are square. Soz, I'm not technical at all.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local