Hi
I am about to order a new oil combi boiler and installation, and I am confused over what size boiler. I got three quotes, two of which quoted in person and said two different sizes. One suggested 18/25 and the other a 26/35. Putting aside the cost difference of the boiler, the engineer offering the samller size is significantly cheaper. How can I make sure that the smaller size is the right one, they seem adament. Does it depend on the flow speed of the mains water? Some detail about my house are:
4 beds
1 bath
13 rad
kitch/diner UFH.
Built circa 1880
I guess I also need to check the existing pipe dimensions. We currently have a large boiler but I do not have much faith that that was installed properly.
Also, which brand?
Thanks
I am about to order a new oil combi boiler and installation, and I am confused over what size boiler. I got three quotes, two of which quoted in person and said two different sizes. One suggested 18/25 and the other a 26/35. Putting aside the cost difference of the boiler, the engineer offering the samller size is significantly cheaper. How can I make sure that the smaller size is the right one, they seem adament. Does it depend on the flow speed of the mains water? Some detail about my house are:
4 beds
1 bath
13 rad
kitch/diner UFH.
Built circa 1880
I guess I also need to check the existing pipe dimensions. We currently have a large boiler but I do not have much faith that that was installed properly.
Also, which brand?
Thanks
