boiler able to cope with additional radiator + shower room?

[plentyofdiy]

Hi,

I'm interested in getting a shower room done in the loft and would like to find out if my current boiler would be able to support this or whether i'm looking at having to purchase a new one.

i currently have a Radiant rsf 24e Slim combi boiler 26KW currently running 9 radiators one toilet room and one bathroom.

perhaps there is a website to check this?

 

[xr4x4]

You need to work out the sizes of your rads, work out the kW per rad and add it all up.

I go to websites like screwfix or wickes find the closest matching rad and take the rad kW from that.

Unless your rads are massive, I can't see it being a problem.

 

[xr4x4]

Also, as it's a combi, you will only be able to run one outlet at a time, ie one shower.

 

[plentyofdiy]

Also, as it's a combi, you will only be able to run one outlet at a time, ie one shower.

do you mean as in only one shower with hot water will work when both run simultaneously?

 

[xr4x4]

As a general rule combis will only supply one hot water outlet at a time.

Ie you will only be able to use one shower at a time.

I'm guessing you have the problem of the shower going cold when someone opens the hot tap when someone's in the shower?

This is why.

 

[plentyofdiy]

As a general rule combis will only supply one hot water outlet at a time.

Ie you will only be able to use one shower at a time.

I'm guessing you have the problem of the shower going cold when someone opens the hot tap when someone's in the shower?

This is why.

ok i got you. i believe we do have this problem. This is not a biggie.

i've been told the upstairs shower would have reduced pressure?

 

[xr4x4]

Not necessary, depends on your mains pressure.

The higher you go the worse the pressure you will have but if you have good mains pressure it won't be a problem.

 

[plentyofdiy]

thank you for your prompt and useful responses!