What's the problem with my heating?

[felix33331]

My central heating is not enough to keep my house warm. I've got a cobi boiler with 8 radiators the room sizes are 21 s.q.m and the heat is not enough to keep the warm on the rooms.(all radiator are working well)
Should I change the boiler?
Maybe replace the central heating?
or Perhaps put bigger radiators?

Any advice would be very grateful

By the way avery 4 minutes the green flame in my boiler goes off for about 90 seconds that happen when the central heating is on is tahat ok?

 

[Rob]

Your radiators should get too hot to touch if your boiler stat is right up.

There is no point in changing the boiler. Fit bigger rads!

 

[gas4you]

The radiators need to be sized correctly for each room. There are many heat loss programs available on the internet. You need to google for them.

 

[namsag]

So how big are the rads in your 21sqm room and are all your rooms this size

 

[felix33331]

The size of my radiators are about 80 ctm long * 60 ctm
If a changed all rad for 120 cm it ill be a problem for my boiler?
combi potterton puma 100E

 

[Dan Robinson]

Assuming your boiler was not a pile of shi1te; you would need a very large house for it not to be capable of heaitng it sufficiently. Put it this way - you owuld need a lot more hot water than heating.

Use a downloadable tool or professional advise to give you the right size for the heating system rads.