Really need some experienced advice please. Sorry a bit long but want to include all details that may be relevant.
We are doing an extension. We are short on space for radiators. We would like to use high output vertical ones but would like to get advice please on placement.
Before extension 'KITCHEN' and 'ROOM' were separate.
KITCHEN had a 600x1200 21 type rad = 5980 BTU (fig 1) - on very cold days end of KITCHEN had a chill, presumably because of 2 solid uninsulated outer walls and cold air under suspended floor.
ROOM had 2 x 600x800 type 22 rads = 9766 BTU (fig 2 and 3). ROOM was actually too hot and we used to TRV to regulate.
Now that we are extending and opening up, ROOM's radiators have to be moved to the side. Most convenient would be to replace the ROOM one with a single vertical one of 8409 BTU at position fig. 4 and the EXTENSION radiators 1 x 8409 BTU at position fig 5 and 1 x 6540 BTU at position fig 6. These will be Ultraheat branded and are supposed to be reputable and should deliver the advertised BTU.
My questions are:
1. Do the positions of 5 and 6 look workable to throw the heat over this size of room? or will that area be overheated and far ends chilly?
2. The opening between ROOM and EXTENSION will be open most of the time, so would radiators 4 and 5 be too close? Could they affect each others TRV's?
3. Assuming the technical BTU's of 5 and 6 are suited for the room, will radiator 5 have some of it's BTU lost into the ROOM and the far end of extension will have a chill, or on the contrary will radiator 4 be able add BTU's to EXTENSION and I could put a 10100 BTU there?
4. We could put a radiator at the end of wall 1 at garden but that would close that area for a planned use. We would do that if it is a far better option.
5. Would it help the extension BTU's if we we upgrade the existing KITCHENS one (fig 1) to a type 22 - will add about 1000BTU ?
6. We have received all sorts of results from online BTU calculators but none seem take in all the variables such as room open to other heated areas. Is there anyone experienced who can give a 'real life' estimate.
Extension info:
Between doors and skylight we will have approx 18sqm of glazed area. The rest is insulated walls and an insulated flat roof and tiled floor above insulated screed. The 3 walls are outside walls.
We are doing an extension. We are short on space for radiators. We would like to use high output vertical ones but would like to get advice please on placement.
Before extension 'KITCHEN' and 'ROOM' were separate.
KITCHEN had a 600x1200 21 type rad = 5980 BTU (fig 1) - on very cold days end of KITCHEN had a chill, presumably because of 2 solid uninsulated outer walls and cold air under suspended floor.
ROOM had 2 x 600x800 type 22 rads = 9766 BTU (fig 2 and 3). ROOM was actually too hot and we used to TRV to regulate.
Now that we are extending and opening up, ROOM's radiators have to be moved to the side. Most convenient would be to replace the ROOM one with a single vertical one of 8409 BTU at position fig. 4 and the EXTENSION radiators 1 x 8409 BTU at position fig 5 and 1 x 6540 BTU at position fig 6. These will be Ultraheat branded and are supposed to be reputable and should deliver the advertised BTU.
My questions are:
1. Do the positions of 5 and 6 look workable to throw the heat over this size of room? or will that area be overheated and far ends chilly?
2. The opening between ROOM and EXTENSION will be open most of the time, so would radiators 4 and 5 be too close? Could they affect each others TRV's?
3. Assuming the technical BTU's of 5 and 6 are suited for the room, will radiator 5 have some of it's BTU lost into the ROOM and the far end of extension will have a chill, or on the contrary will radiator 4 be able add BTU's to EXTENSION and I could put a 10100 BTU there?
4. We could put a radiator at the end of wall 1 at garden but that would close that area for a planned use. We would do that if it is a far better option.
5. Would it help the extension BTU's if we we upgrade the existing KITCHENS one (fig 1) to a type 22 - will add about 1000BTU ?
6. We have received all sorts of results from online BTU calculators but none seem take in all the variables such as room open to other heated areas. Is there anyone experienced who can give a 'real life' estimate.
Extension info:
Between doors and skylight we will have approx 18sqm of glazed area. The rest is insulated walls and an insulated flat roof and tiled floor above insulated screed. The 3 walls are outside walls.
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