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- 22 Apr 2023
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We have underfloor heating on ground and first floor and radiators on second floor.
The underfloor heating manifolds have mixer valves to drop temperature down. There are two manifolds, one on each floor
Heating on ground floor is fine no issues at all
Heating on second floor with radiators is also fine.
The problem is on the first floor where the heating is somewhat erratic.
It worked fine for about 1 year to maybe 18 months and then it's been suboptimal.
All the loops were set to about 2 litres/minute and one of the rooms (my kid's bedroom) got progressively less heat.
At some point I set the loop that goes into that room to about 3 litres/minute, which seemed to solve the issue for a bit but then it seemed to make no difference.
Sometime later, I decided to drop the flow to 1 litre/minute on the spare room and then I stopped the flow (I actually tried to get it to about 0.5 litres/min but it seemed to actually mostly stop), the odd thing is that for about a week the spare room was still getting warm.
I thought that there might be air on the loop on my kid's bedroom but I talked to a plumber, who said that it was unlikely, though he didn't offer an explanation and then never turned up.
Any ideas?
Thanks
Picture of the manifold on the first floor with the heating OFF. Loops from left to right are: spare room, hallway/bathroom, kid's bedroom, home office.
The underfloor heating manifolds have mixer valves to drop temperature down. There are two manifolds, one on each floor
Heating on ground floor is fine no issues at all
Heating on second floor with radiators is also fine.
The problem is on the first floor where the heating is somewhat erratic.
It worked fine for about 1 year to maybe 18 months and then it's been suboptimal.
All the loops were set to about 2 litres/minute and one of the rooms (my kid's bedroom) got progressively less heat.
At some point I set the loop that goes into that room to about 3 litres/minute, which seemed to solve the issue for a bit but then it seemed to make no difference.
Sometime later, I decided to drop the flow to 1 litre/minute on the spare room and then I stopped the flow (I actually tried to get it to about 0.5 litres/min but it seemed to actually mostly stop), the odd thing is that for about a week the spare room was still getting warm.
I thought that there might be air on the loop on my kid's bedroom but I talked to a plumber, who said that it was unlikely, though he didn't offer an explanation and then never turned up.
Any ideas?
Thanks
Picture of the manifold on the first floor with the heating OFF. Loops from left to right are: spare room, hallway/bathroom, kid's bedroom, home office.