I want to replace our ~20 year old boiler with a condensing combi.
I'd like to install one that allows for 1 bathroom (with shower) and a shower room, so basically be able to handle 2 people having a shower and someone washing up in the kitchen simultaneously.
Property is 3 bed flat with 6 radiators in London.
My mains pressure is ~3 bar and I wanted a 15ltr/min boiler ecotec plus 837 (job to include replacing two radiators and disconnecting a gas fireplace)
1 British Gas installer said that's too big, a 9.8ltr boiler would do, "it's all about the mains pressure coming in" (charging ~£5500 inc vat )
2 Independent A installer said 15ltr/min is fine (£2990 inc vat 837 boiler)
3 Independent B says 837 is too large and to go for 12ltr/min (waiting for quote) - and he says the larger boiler is for when you have lots of radiators.
4 Independent C (over the phone quote) said 9.8ltr/min (£2700 inc vat 824 boiler)
Who is right?
Are Drayton TRV valves better than Honeywell?
Many thanks in advance!
I'd like to install one that allows for 1 bathroom (with shower) and a shower room, so basically be able to handle 2 people having a shower and someone washing up in the kitchen simultaneously.
Property is 3 bed flat with 6 radiators in London.
My mains pressure is ~3 bar and I wanted a 15ltr/min boiler ecotec plus 837 (job to include replacing two radiators and disconnecting a gas fireplace)
1 British Gas installer said that's too big, a 9.8ltr boiler would do, "it's all about the mains pressure coming in" (charging ~£5500 inc vat )
2 Independent A installer said 15ltr/min is fine (£2990 inc vat 837 boiler)
3 Independent B says 837 is too large and to go for 12ltr/min (waiting for quote) - and he says the larger boiler is for when you have lots of radiators.
4 Independent C (over the phone quote) said 9.8ltr/min (£2700 inc vat 824 boiler)
Who is right?
Are Drayton TRV valves better than Honeywell?
Many thanks in advance!