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Thanks Tony 1. what are Fins? 2. whats the best/easiest way to measure the temp im getting indoors? 3. why does it seem too low to you? thanks for all your help, i appreciate it

Hi Done the Heat loss calculation for my room and it appears that i need a radiator producing between 3000 - 4000 BTU (for this room) My question is - is their anyway that i can check what BTU the rads im currently using are producing? Thanks

How do i do a heat loss calculation? For example the rad in my bedroom is 90x50x10 and the room is about 12x13

the rads seem to get hot all over, no air trapped. but the rooms are not warming up. the rads seem to be a decent size for the rooms (rooms not that big), but something is not right. ive set the the gage to its highest on the vaillant boiler and on the thermostat but the rooms do not warm...

thanks yes i have, but all that comes out is water - no air their is insulation in the attic

Just to add....i tried to turn on the rad in the 2nd bedroom, but it will not heat up and the pipes leading to it are cold??? what could this mean?

How do i tell?

HI I will turn on the 2nd bedroom heater, the bathroom also has a towel rail, so the rad is not really needed (i thought, thats why i turned it off) The rads dont seem to small for the rooms, the rooms are average size, the bedroom rad is about a meter long and the living room one is about...

Hi This is my first post, and i am grateful for anyone who has looked or can help. I am having a nightmare with my central heating, basically its not heating up my flat. i've got a valiant Combi boiler and can have the heating on for hours and the place will not get hot (at temp of 30)...