- Joined
- 2 Jan 2019
- Messages
- 335
- Reaction score
- 8
- Country
We have a small lean to on the side of the house with a polycarbonate roof on. We have redecorated and I took the radiator off to decorate behind. I'm contemplating replacing it as it's the only one we haven't replaced and is looking old and worn.
It's currently a type 11. I'm thinking about upgrading to a type 21 but worried about the wasted heat with polycarbonate roof. The rest of the building is double skin brick and insulated so the roof is the weak point for heat loss. Is the heat output and loss of heat going to make a massive difference to our usage and gas bill or will it be negligible?
I've looked at the BTU output and it's a lot higher with a type 21 than type 11. It has no thermostat valve on. Just lockshield both sides. I'd have it about a quarter open so it takes longer to warm up than the rest and therefore doesn't waste heat
It's currently a type 11. I'm thinking about upgrading to a type 21 but worried about the wasted heat with polycarbonate roof. The rest of the building is double skin brick and insulated so the roof is the weak point for heat loss. Is the heat output and loss of heat going to make a massive difference to our usage and gas bill or will it be negligible?
I've looked at the BTU output and it's a lot higher with a type 21 than type 11. It has no thermostat valve on. Just lockshield both sides. I'd have it about a quarter open so it takes longer to warm up than the rest and therefore doesn't waste heat
