New radiator BTU problem...

[tomton]

Hi,

I'm planning to replace my old radiator which produces about 6000BTU with new vertical one. I've used online calculators and I need about 5500BTU but the problem is that vertical radiators are not as efficient as the standard ones. I was looking for some time for high BTU rated vertical radiator and the only one I can afford produces 3700BTU an its 1800BTU short from what I need...
will my room be colder than it is now if I put radiator with not enough "power" for the space it should heat up or is it just going to take longer to reach right temperature?

thanks for any advice...

 

[Andy165]

Put a pullover on and suck fishermans friend sweets Or get the correct size rad. fitted to heat the room

 

[gas4you]

Room will never heat up with approx 30% less heat going into it