It's cold today!
According to my Tado, the central heating has been on since 5:44 this morning, at which point it was 17.7 degrees in the house. The thermostat is set to 21.5, however it is now (almost 5 hrs later) only 18.8 with all radiators set to max!
I realise that the fact it's 1 degrees outside is obviously going to have a huge impact, but surely the house should heat up quicker than that?
Radiators in every room - all with TRVs except for in the hall downstairs (thermostat is at the top of the stairs) - I bled them all a couple of weeks ago (none of them had air in). They feel warm to touch, but not hot - i.e. I can hold my hand on them no problem without it burning, probably about the temperature you'd have a bath at.
Loft insulation all over, not really thick - probably ~3 inches (but still, the temp. difference between the house and the loft is significant).
Double glazing in every window - probably ~10 years old, but none of it appears to be blown.
The boiler is an Ariston Microgenus MFFI 27, and must be going on 8-9 years old (it was in the house when we moved in almost 5 years ago, and the previous owner had it a few years before that). Last serviced ~18 months ago so I realise it's overdue, but that's not going to make a significant difference is it?
One thing I have noticed on the boiler, it has LEDs on it which supposedly show the temperature, and only the lowest one (marked 40) is ever lit, even though I have the temperature dial set to max.
It also never seems to stay on for long - the pump will be running, but the burner seems to cycle 10 seconds on, 20 seconds off.
It also sometimes seems to have trouble maintaining consistent hot water - e.g. when running a bath sometimes it will go cold for 30 seconds or so.
We had the PCB and diaphragm replaced a couple of years ago as it stopped providing hot water at all.
Also just checked - even the pipes coming directly from the boiler aren't hot - they are a bit warmer than the radiators, but I can still comfortably hold them.
Is it new boiler time, should I try a new PCB (can get one for ~£50-100 on ebay) or is it worth getting someone to service/take a proper look at it?
No idea on the BTU of the radiators, but I'm guessing that as they aren't getting "hot", replacing them with higher rated ones won't really make a significant difference?
Edit, a quick google shows they stopped making this boiler in 2007, so unless this was old stock, it's at least 10 years old.
Edit 2: the water pressure in the boiler is fine - right in the middle of the blue section of the dial.
According to my Tado, the central heating has been on since 5:44 this morning, at which point it was 17.7 degrees in the house. The thermostat is set to 21.5, however it is now (almost 5 hrs later) only 18.8 with all radiators set to max!
I realise that the fact it's 1 degrees outside is obviously going to have a huge impact, but surely the house should heat up quicker than that?
Radiators in every room - all with TRVs except for in the hall downstairs (thermostat is at the top of the stairs) - I bled them all a couple of weeks ago (none of them had air in). They feel warm to touch, but not hot - i.e. I can hold my hand on them no problem without it burning, probably about the temperature you'd have a bath at.
Loft insulation all over, not really thick - probably ~3 inches (but still, the temp. difference between the house and the loft is significant).
Double glazing in every window - probably ~10 years old, but none of it appears to be blown.
The boiler is an Ariston Microgenus MFFI 27, and must be going on 8-9 years old (it was in the house when we moved in almost 5 years ago, and the previous owner had it a few years before that). Last serviced ~18 months ago so I realise it's overdue, but that's not going to make a significant difference is it?
One thing I have noticed on the boiler, it has LEDs on it which supposedly show the temperature, and only the lowest one (marked 40) is ever lit, even though I have the temperature dial set to max.
It also never seems to stay on for long - the pump will be running, but the burner seems to cycle 10 seconds on, 20 seconds off.
It also sometimes seems to have trouble maintaining consistent hot water - e.g. when running a bath sometimes it will go cold for 30 seconds or so.
We had the PCB and diaphragm replaced a couple of years ago as it stopped providing hot water at all.
Also just checked - even the pipes coming directly from the boiler aren't hot - they are a bit warmer than the radiators, but I can still comfortably hold them.
Is it new boiler time, should I try a new PCB (can get one for ~£50-100 on ebay) or is it worth getting someone to service/take a proper look at it?
No idea on the BTU of the radiators, but I'm guessing that as they aren't getting "hot", replacing them with higher rated ones won't really make a significant difference?
Edit, a quick google shows they stopped making this boiler in 2007, so unless this was old stock, it's at least 10 years old.
Edit 2: the water pressure in the boiler is fine - right in the middle of the blue section of the dial.
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