Question for plumber - combi /mega flow

Ruski

Feel free to click the 'thanks' button

Russ

ey143

Would anyone suggest it is better to have two combination boilers in one large house i.e. one for each floor if water pressure is good and then not need a mega flow at all?

Owain_Moneysaver

ey143 wrote: »

Would anyone suggest it is better to have two combination boilers in one large house i.e. one for each floor if water pressure is good and then not need a mega flow at all?

The maximum you can get through a standard domestic U6 gas meter is about 64 kW. So that would be 2 x 32kW boilers, assuming no gas cooker and assuming the gas service to your home is adequate.

32kW is okay but not stellar hot water performance for filling a bath.

ey143

How can I be sure what my gas pressure is?

southcoastrgi

anything over 70kw is commercial, so be prepared to pay accordingly, plus they still won't give you the performance of an unvented cylinder & therefore IMO is a waste of time & money

ey143

Ok. Can you pls clarify what you meant when you said that the cylinder had this tapping?

I thought in recent years new yellow larger pipe was being installed into houses?

Does the cost of running a secondary valve amount to much in electrical usage?