For questions regarding a central heating system for the home. The system consists of a furnace or boiler and a method to distribute the heat throughout the home.

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2answers
3k views

What should I do about this Alpha HE CB33 Boiler pressure error condition?

I have an alpha he cb33 boiler which has stopped working this morning. Yesterday I removed a radiator for cleaning then put it back on and re-pressurised the system. It was working ok last night. ...
2
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1answer
550 views

What would cause the bottom half of a radiator cool down after heating up?

I have a one pipe system and just had a new Vertex vertical radiator fitted. It's the last radiator in the circuit. The radiator I had replaced for the vertical radiator worked like a dream for the ...
2
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1answer
1k views

How do I work out the CH boiler size we should have?

How do I work out the boiler size we should have? (I have been told we need a 18KW boiler for our large 3 detached bedroom bungalow in the north of the UK, is this really powerful enough?)
2
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1answer
91 views

Why is one radiator TRV in the house missing the control?

My house had a new gas central heating system fitted, with new radiators, before I moved in. One radiator (in the tiny downstairs WC) is missing the control knob for the TRV, and is set to the highest ...
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0answers
100 views

Why would the input gas pressure fall when the central heating boiler calls for heat?

Since the annual service of my traditional gas boiler the house takes considerably longer to heat up. The boiler flame no longer seems as "fierce" as previously. I'm told the burner pressure and ...
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0answers
149 views

Why aren't my radiators heating up after I replaced a rusted through pipe?

We had a bit of corrosion in an old pipe and it started leaking and losing pressure and so I drained all the central heating system (radiators), replaced the pipe and fitting. It was awkward and the ...
2
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0answers
332 views

Are w1 and w2 both energized during a second stage heat call from the thermostat?

Short version: does two-stage thermostat always close W1 circuit when it closes W2 circuit, or they might be closed independently? Long version: I have two-stage furnace, currently connected to older ...
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0answers
279 views

Why won't my condenser turn on when I run my heat pump?

I have a York Affinity condenser. When I run my heat pump, I expect it to turn on somewhere in the cycle but it doesn't. It generally does this once a year. The usual fix is to cycle the power of the ...
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2answers
1k views

Anyone heard of painting asbestos insulation tubes?

We recently had an old furnace inspected and the heating specialist mentioned that he suspected that the heating ducts had asbestos. He suggested painting them as an alternative to expensive removal ...
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3answers
300 views

A/c makes the lights turn on and off! No Joke!

The lights on the first floor, upstairs bathroom and upstairs Laundry room won't work. The breakers did NOT pop The air conditioning was running this morning but is not working now. When the ...
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2answers
2k views

What could cause a clicking sound in an underfloor heating controller?

I have a underfloor heating system installed in my apartment. Each room has a Uponor T-37 thermostat, hooked up to C-35 controller. The system is about four years old and recently I have noticed a ...
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2answers
37k views

Although my hot water works, why won't my radiator come on?

As above, the hot water works but the radiators do not come on. It's an old gas powered central heating system. We're thinking it's the wall thermostat at fault but is there anything else it might be? ...
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2answers
2k views

What is correct way for radiator plumbing/connection in multi-story flat

We have some problems with central heating in our multi-flat house and I would like to understand something. Some flats have old-style radiators, and almost every flat has different way to connect to ...
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2answers
5k views

Why is my radiator not getting hot water or have air in it?

All except one radiator are working fine. The one that stays cold is in the room with the thermostat, so the system keeps running more than it should. I tried bleeding it and just water came out. I ...
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1answer
3k views

What causes a HVAC control transformer to overheat?

I recently replaced my 24 volt HVAC control transformer. The outside unit started up including the air handler and ran for maybe 10 minutes. After the units shut down I noticed that the transformer ...
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2answers
3k views

Can I use a 40 lb propane tank just for my central heating?

I want to know if I can use a 40 lb propane tank for my central heating. I have not tried anything. I don't want to put natural gas in, just want the propane gas. If someone can answer that, I want ...
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2answers
213 views

Can anyone identify this heating timer?

So, It's getting quite cold now and my central heating is just going on and off randomly. There is what seems to be an unbranded heating timer below the combi-boiler (Baxi). However I have no idea how ...
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1answer
133 views

How to determine if my heating & cooling system is adequate for my home?

Is there some kind of calculation I can follow to determine if the heating and cooling system in my home is rated (adequate) for the size of the house? I assume there is some way to say something ...
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1answer
298 views

What is the best way to retrofit an underfloor heating system in a concrete slab?

I have a UK bungalow that I am renovating. I would like to replace the current heating system (radiators, natural gas boiler) with an underfloor heating system. I think the cost of digging up the ...
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1answer
132 views

Can I change my standard thermostat to a Wifi one?

I have a (quite standard) TR-010X T6360A thermostat that looks like this: And this is the wiring diagram: Can I install the Heatmiser PRT-TS WiFi Touchscreen Programmable Thermostat? This is the ...
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1answer
19k views

How can I stop my radiators “clicking” when they're turned on or off?

I have a central heating system on a timer, and whenever the timer turns on or off, for around ten / fifteen minutes, some of the radiators in my home make regular clicking noises, kinda ...
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2answers
1k views

Why aren't my radiators heating up?

Two of the eight radiators in my house get only lukewarm. All eight radiators have been bled. The inlet pipes to the two dodgy radiators are red hot so the problem appears to be with the valves. I ...
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1answer
184 views

Why would a newly installed radiator only heat when on constant bleed?

We have changed a gas central heating radiator. It is the last radiator in the circuit. It will not communicate with the boiler and only brings hot water into the pipe leading to the thermostat when ...
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1answer
593 views

Furnace Airflow

I have central air. When the furnace comes on, we can feel air coming out of the registers for a few minutes, then the airflow stops. If we turn it off for a few hours, we can turn it on again and get ...
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1answer
198 views

Pressure level in central heating system

Recently (since last week), the pressure in our heating system (as indicated by the pressure gauge on the boiler) is dropping rapidly. We're having to top this up around once every two days. As I ...
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2answers
131 views

Funny “thump” sounds sometimes at night, what could be the cause?

I live in a 4-story townhouse that has a wood frame (no concrete except in basement) and was built in late 1980's. Once in a blue moon, whilst laying on the bed at night, I have heard a rather loud ...
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1answer
98 views

Should a copper central-heating water pipe be mortar-ed in when passing through an internal wall?

I've been trying to track down some very annoying 'ticking' sounds that happen within seconds of the central heating coming on. I know that it likely to do with copper central heating pipes under the ...
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1answer
198 views

How can I tidy up a hole in drywall that has pipes coming through it?

We recently bought our first house and have discovered that the previous owners replaced a radiator with a heated towel rail that's plumbed into the house's central heating system. The issue is that a ...
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1answer
259 views

What to do first in a house with poor thermal performance and high energy bills

I just moved into a house and am a little bit disappointed in its thermal performance so far. It's winter and cold outside, and the furnace heats the house up pretty quickly, but then the house gets ...
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1answer
546 views

Radiators don't heat up evenly, and am missing an Expansion Vessel. Do I need it?

I have a new Worcester 40CDI Regular Boiler that does not come with a built-in expansion vessel. I just discovered that the installer did not install an external expansion vessel either. For HW, I ...
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2answers
70 views

Trouble with twinned Bryant heating units

I have twinned heating units as w1 and w2. The first unit to come on needs to be replaced; but, until then I need to know how to get the system to heat better. The problem is the fan comes on on unit ...
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3answers
1k views

Combi boiler doesn't realise it's already lit

I have an Ariston Eurocombi (A23). The problem is it doesn't realise the flame is lit. When I start it up and cause demand (run hot tap or turn on heating) it fires up the flame correctly, however, ...
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3answers
9k views

Why does my central heating system comes on on its own accord?

Can anyone tell me why my central heating comes on by itself: the radiators get hot and stay hot for around 1-3 minutes then the system turns back off again. This can happen any time throughout the ...
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1answer
200 views

How to bind/pair a Sunvic wireless radio heating controller to its receiver

I have a Sunvic wireless controller and thermostat with a receiver base station in the boiler room. It became detached and I'd like to reconnect it with the controller unit. Note: this is a question ...
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1answer
239 views

Wood heating - Problems with power failures. Need some advice

My sister uses wood heating in here house. Her heating system has temperature control but of course does not work without electricity. If electricity goes off the temperature can grow ...
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1answer
14k views

Should I add a return air vent in a refinished basement?

We are refinishing our basement, and are nearing competition. The walls are drywalled, and the ceiling is dropped. There will be about 500 sq ft of finished space, including a full bathroom, and ...
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0answers
36 views

Two radiators are always hot

Three months ago I moved to a house with a back-boiler (gas) which supplies the hot water tank and the central heating. Apparently it has been serviced recently. There is a thermostat in the kitchen ...
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1answer
45 views

Plastic central heating pipe - cover up in built-in cupboard

I have a built in cupboard which has plastic water pipes travelling vertically up the inside (supplying a small radiator in the loft). I want to cover them up because they're ugly, awkward and also ...
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0answers
45 views

What material to use to clog previously cut central heating pipes

I used to have a central heating system which was never in use for years, because it couldn't be connected to central pipe inside other building. Last winter I finally dropped water from it and cut ...
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1answer
268 views

Why does the blower in the attic vibrate during heating when it is really cold?

We have a Carrier heat pump system in our home, and the blower is located in the attic. When it is especially cold, the blower runs on high (there are three levels: high, medium, low). During this ...
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0answers
67 views

Does my Central Heating system need balancing?

The difference in flow and return temperatures at each radiator varies between 2C (lowest) and 7C (greatest). Although all of my radiators get hot I understand the desired differential is 10-12C. Do ...
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0answers
112 views

What is the effect of differences in flow and return rates in a traditional gas central heating system?

Would a smaller or lower differential in flow and return rates in a traditional gas boiler "Y" central heating system make the house take longer to heat up? Is there any way to adjust these flow ...
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0answers
27 views

How can I fix a single radiator that is not providing heat? [duplicate]

Possible Duplicate: Why is my radiator not getting hot water or have air in it? All of my radiators are working, apart from one. There is heat in the pipe attached to it , but the radiator ...
1
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1answer
779 views

Potterton EP3000 programmer HW and CH buttons not working

I've got a Potterton EP3000 boiler and the programmer won't respond to me pressing the HW and CH buttons. It was working fine until I switched off the power to the plugs (to do some electrics). After ...
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2answers
4k views

Why does my central heating system get so much air in it?

We have an old system with a header tank in the loft. Over the last few days I have bled the radiators many times. However one section: Took a few hours until any water got to it, Its radiators ...
0
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2answers
909 views

Is is possible to retrofit a wood-burning stove into an existing gas central heating system?

Our house has gas-fired central heating, but fuel costs in the winter are very high (it get's very cold here!). I've been toying with the idea of a wood burning stove. I'm wondering whether, rather ...
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1answer
47 views

Is there any way to heat up a space noise free?

I hate my gas furnace so much, because the central heating system is so noisy. So, I bought a portable oil radiator heater, which is a temporary solution for me. It is truly noise free though. But ...
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1answer
154 views

Would connecting the downpipe to a gas boiler inlet save energy?

I have a condensing gas boiler for tap-water and central heating. Not very far from the inlet there is a downpipe outlet for the sewer. Since this smelly pipe is partially filled with the same ...
0
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1answer
38 views

dripping sound in ceiling when central heating gets warm

I am a complete novice about plumbing so apologies in advance. Basically I have noticed that, when my central heating warms up I hear what sounds like a dripping noise in the ceiling. This seems to ...
0
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3answers
38 views

Furnace running.Shuting off for a few mins then starting again.Continued process

Why would my furnace run it's cycle, shut down and then start up again a few minutes later. Continuing this cycle all night?? Thanks