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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1answer
46 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
54 views

What could be causing my Lennox furnace to blow cool air?

My Lennox outside furnace is blowing cool air, not hot even when the burner is lit. It takes 3 times longer to heat the house than it should. I just had the draft motor replace about a month ago and ...
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0answers
22 views

Why did my central heat shut down?

I did maintenance and turned on the electric heater switch on thermostat to Central Unit. It came on just fine and warmed up the house and shut off automatically. But it never came on again. The a/c ...
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0answers
12 views

Installing a wifi thermostat when there is no c-wire? [duplicate]

Want to use a WiFi thermostat but there is not a C wire (24volt) only 2 wires. Can I get a transformer to plug into a 110v outlet to provide the energy the c wire normally supplies?? What would you ...
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1answer
62 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
138 views

How do I connect a C wire to an Utica PEG112CDE steam boiler?

I want to upgrade my old mercury thermostat that I currently have to a newer programmable thermostat. This little DIY project is for my first late 1920's home that I recently purchased. I currently ...
2
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1answer
48 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
38 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
92 views

Why does my heat pump keep triggering the high-pressure cut-off?

Our Rheem heat-pump is on the fritz. It keeps triggering the high-pressure cut-off on the outdoor unit. We've had problems with this happening before, but only when the outside temperature got to ...
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3answers
99 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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1answer
119 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
552 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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1answer
99 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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2answers
1k views

What to do about different rooms in the house being a completely different temperature?

I moved into a 30 year old home last December. There is a problem with the HVAC. I have included a very crude drawing of the floor plan The problem is that I can't maintain a comfortable ...
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0answers
16 views

Weather compensation, zoning or both?+ minimum output

I am renovating my 4 bed Victorian house with solid walls. We are about to replace the boiler and I am looking at a Worchester bosh 36kw cdi compact with WF100 weather compensator. I also want to ...
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0answers
53 views

Are wall air vents a potential problem?

A house I'm looking at has A/C vents in the walls, rather than in the ceiling or floor. I've never lived in a house with air ducts in the walls. Can I expect to have problems? The house was built in ...
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0answers
51 views

Honeywell wireless thermostat and central heating controler problem

We have a Honeywell wireless thermostat and central heating controller. It is set to maintain a temperature at 21c between 8 and 10, and then between 4 and 10. In the other periods, it is set to ...
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1answer
127 views

I have just reset furnace due to a trouble code, what should I monitor or re-do over the next few days?

My furnace was throwing a trouble code. The code was 31 and for my manufacturer (Bryant) and others thats is a pressure switch code. I was able to resolve this code and get my heat back on simply by ...
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1answer
120 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 ...
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1answer
151 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
509 views

When should HVAC returns be opened and closed?

My Pennsylvania house was built in the early 90s, has central heat (natural gas) and central A/C, and most rooms have pairs of closable air returns on the wall near the floor and ceiling. I've been ...
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1answer
334 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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1answer
164 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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2answers
60 views

Twinned heating units w1 and w2

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
577 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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1answer
6k views

Gas furnace kicks on then off frequently

A few times in the past week I will wake up to my furnace turning on, hearing a click when it tries to ignite, then turn off. This will happen for a couple minutes before the furnace quits trying. ...
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2answers
1k 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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0answers
416 views

What might cause the heating to get “stuck” off regardless of room thermostat?

What could cause my heating system to get "stuck" in a state where the boiler will no longer come on in response to the room thermostat, and I can only seem to "fix" it by turning the property power ...
3
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2answers
610 views

Can upgrading my boiler save me money?

I've just received my annual gas usage statement. It came as a surprise to me that I'm using almost the average gas consumption in the UK. The average is 16,500kWh and I used 15,000kWh over the year. ...
2
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2answers
79 views

1971 D615MH Coleman Furnace,

I have a Coleman D615MH furnace. It will not kick off. I have to turn both breakers off. I just replaced the thermostat, thinking that was it. I turned the breakers on & it was still running. ...
3
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2answers
151 views

My hot water boiler failed **On** - what would cause that?

I arrived back from holiday to find the house like a sauna, everything in the kitchen too hot to touch, cutlery scalding hot etc. My central heating was on full, and must have been for some days. ...
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0answers
62 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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votes
1answer
585 views

Why did an HVAC installer add this PVC pipe?

We recently had a VERY old central heating furnace replaced and I noticed that the HVAC installer added the following PVC pipe shortly before the inspector arrived: The metal vents were already ...
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0answers
97 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 ...
2
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0answers
89 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 ...
2
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0answers
125 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 ...
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3answers
3k views

Why is my Central Heating taking so long to heat up?

I'm in the UK with a small modern, well insulated, double glazed home heated by a traditional gas boiler. My heating had been achieving room stat temperature within 30 minutes but is now taking at ...
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1answer
10k 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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0answers
469 views

maxipod heat store problem

I have a heating system using a 300litre heat store tank. It is connected to solar as well as oil and a solid fuel stove. A coil provides mains pressure hot water. Oil & solid fuel flow pipes go ...
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0answers
569 views

What could cause my radiators to go cold when the hot water is turned on?

when only heating is selected on my program timer the radiators all work fine and are hot. But when both heating and hot water are on the water gets hot but all the radiators go cold. When the hot ...
2
votes
1answer
847 views

How can I stop my house from waking my wife up every day in the winter?

I'd like to preface this post with the fact that I'm a complete diy amateur. I may say stupid things, or things that make no sense. Please feel free to correct me as I'm always open to learn. So, ...
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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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2answers
5k 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 ...
2
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0answers
263 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 ...
4
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3answers
9k views

Why is it taking so long for my house to heat up?

Firstly, I should probably mention that I'm in the UK... My wife and I bought a house new from a builder over 9 years ago and have had no problems whatsoever with our central heating system in that ...
4
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1answer
268 views

Is it cost effective to close some heating vents?

I have a central natural gas forced-air furnace in a small (1500 sq. ft.) home. I have an unfinished main room downstairs and a room for storage upstairs that's not being used as a bedroom. Is it ...
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0answers
26 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 ...
2
votes
1answer
855 views

Cheaper to run central heating sporadically high or constantly low?

My central heating has a thermostat dial ranging from 10 to 30 degrees Celcius. I'm wondering whether it's likely to be cheaper to crank it up to 30, and turn it on for, say, an hour, 3/4 times per ...
2
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2answers
527 views

Furnace Draft Inducer Repair: is previously installed back plate necessary?

I'm replacing a non-functioning draft inducer on the Goodman furnace in my house (GMP075-3). The previous inducer was mounted with a sheet metal back plate between it and the wall of the furnace. ...
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1answer
173 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 ...