Do modern boilers heat the wall they are mounted on?

[wobbly2]

We're looking to have our boiler changed later this year. The existing boiler is mounted on a 1960's block wall that is part of the kitchen. This wall gets very warm when the boiler is in use and heats up the wall cupboards on the kitchen side such that we can't use the cupboards for anything that needs to be kept cooler.

We only have limited wall cupboard space in the kitchen so moving things away from the heat is difficult.

I wondered if it would be acceptable, and if necessary, to insulate the wall on the airing cupboard side with insulated plasterboard (e.g. 25mm or 50mm Celotex) and mounting the boiler on that? However, if modern boilers do not produce a lot of heat through their back or sides then the problem is sorted.

Any advice on this problem will be much appreciated?

 

[cross thread]

Insulation inside so only warm .

 

[wobbly2]

Cross thread, thank you for your reply.

Would you expand on what you've suggested.

 

[MeldrewsMate]

What's your present boiler?

 

[polesapart]

1) Modern boilers do run cooler, you won't have a cast iron lump of heat exchanger kettling away on the wall.

2) You could frame out the airing cupboard wall, incorporating a celotex layer. You'd need to leave studwork at the right height for the boiler hanging bracket or face the wall with ply, MDF or similar.

 

[Stuart981]

In the past I have used 10mm self adhesive sound insulation sheet for cars which reduced the heat transfer from the boiler into a cupboard.

​

 

[wobbly2]

What's your present boiler?

The existing boiler is a Glowworm 30CXi that has a leak in the primary heat exchanger, that is draining thru the condensate pipe, which is the main reason for the change.

Polesapart - is mounting the boiler on a flammable surface e.g. ply, permitted under current regs?

Being a retired sparks I thought to use some 41mm x 41mm (or 41 x 20) galvanized Unistrut (other makes are available) mounted vertically and bolted to the block wall thru a piece of (plasterboard faced) rigid insulation board. The plasterboard/insulation board insulates the wall and the Unistrut provides a ventilated stand-off and rigid mounting for the boiler. Probably way over-kill!!! I think I still have some Unistrut in a lock-up.

Presumeably, I'll should check with the boiler installer before going ahead with the change to make sure he/she is happy with the mounting solution.

 

[denso13]

is mounting the boiler on a flammable surface e.g. ply, permitted under current regs?

Yes.

 

[polesapart]

^^^
yes