For general questions on heating in your home.

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2answers
23 views

Second floor radiators only heat with all other radiators off

I have 2 rads on the second floor that will get hot water flow only when I stop all flow to the other rads on the system. Even then, the flow is very low. I have had this system for 10 years and ...
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1answer
1k views

What could cause a Trane furnace to not start heating?

I have a newer (2007?) Trane XL90 (model: tdx2b080a9422aa)forced air gas furnace. The problem I am having is the burner and fan will not start. The thermostat is set at 67 degrees and shows it is ...
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1answer
21 views

What causes a heater fan to keep running?

I have a regular gas air heater that heats the whole house. It is installed in a garage. When I use thermostat to turn on the heat it works as expected. When temperature reaches set value the gas ...
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2answers
338 views

How much heat loss through bathroom fan vent?

My master bathroom did not previously have bathroom fan, but I installed one and have had wonderful results with keeping the steam from building up and exhausting the moist air. I am using both a fan ...
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2answers
45 views

How do I calculate how long a furnace has to work to compensate a given temp drop?

I am trying to understand the dynamics of heating a home after the furnace size was calculated. Say you have a 60000BTU furnace to heat a 2000 sqft home. At the beginning of the heating season you ...
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0answers
39 views

Why would a GFCI on my infloor heating circuit trip, when an exhaust fan on a different circuit turns on/off?

I have infloor electric heating installed in our bathroom. The power is supplied by a dedicated 240V/1Ph. circuit that also feeds a couple of baseboard heaters in our bedroom. The infloor heating is ...
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1answer
113 views

Will a single ductless mini-split heat pump be able to distribute its air evenly throughout my ranch house?

I am in the middle of a deep energy retrofit of my house, and a quick-and-dirty online manual J calculation of the projected loads once my projects are completed shows an estimated heating and cooling ...
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1answer
22 views

Water leaking in ceiling when central heating turned on

Water is dripping from the ceiling when the central heating is on. If the heating remains on the drip becomes a gush (the ceiling has fallen in under the weight of water). When the bathroom ...
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1answer
11 views

De-airing / venting central heating

(Bear with me, I'm a non-native English speaker from a non-English speaking country, so my terms may be a bit off. If anything is unclear, please inform me of this and I'll attempt to clarify.) I've ...
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1answer
24 views

Increasing the capacity of an electric baseboard thermostat

The electric baseboard heat in my living room has a mechanical thermostat (bimetallic strip) that occasionally gets stuck in the "on" position. I'd like to replace it with a solid-state thermostat, ...
0
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1answer
60 views

Can I put a thermostat on my wood burning furnace?

I have a wood burning furnace with its own blower. I would like to control the blower with a thermostat. Is it possible? The unit has a limit switch.
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1answer
86 views

Why isn't my Empire heater blower working?

The blower on my empire vented room heater model RH-50-6 will not come on. We know the motor and fan work and we have replaced the fan control switch. We don't know what to try next.
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3answers
4k views

Increase wood fireplace efficiency

We have a large fireplace and plenty of free or cheap wood and love having fires for warmth and entertainment. An open fireplace is not an ideal source of heat, but I wanted to know if there's a ...
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1answer
45 views

Heat radiators not all working

I am new to this place and looking for help. Just feel that I wanna try to fix my heat system by myself rather than waiting for (really sucking) pes&g guys. Repairmen came days ago and was ...
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1answer
19 views

No heat but fan and blower continuous run

I have a Trane gas pack 1998 unit that heats with propane. The fan and blower are running, but there's no heat blowing in vents: just cold air. What is wrong?
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0answers
34 views

Listed electric baseboard heaters that permit installation below outlets

Are there UL-listed electric baseboard heaters that do permit being installed below outlets? The FPN in 210.52: Informational Note: Listed baseboard heaters include instructions that may not ...
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0answers
23 views

combi boiler shuts off after a couple of hours

hi my combi boiler keeps switching itself off after a couple of hours running on the timer. You only realise when the room starts to go cold. You have to switch the boiler itself off for about 10 mins ...
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2answers
30k views

What is difference between BTU and MBH for house furnaces?

When selecting a new house furnace most calculators display results as BTUs (based on the square footage, number of levels, estimated temperature, etc). What's interesting is that most new furnaces ...
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0answers
15 views

underfloor heating with cork floor tiles

What is the appropriate subfloor for cork tiles over underfloor heating if the floor is supported by wooden joists? How thick can the floor be?
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1answer
31 views

Can I replace a high limit switch myself?

Thank you for the answer, can I change this myself or do I need to get the HVAC company to do this? I have turned off the breaker in the panel box so that it does not come back on. What is the purpose ...
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1answer
21 views

How can I reset my Baxi Combi Duo-Tec HE boiler after a gas supply fault error?

My boiler is giving me some real problems, for whatever reason, it's not resetting as it should. I ran out of gas last night and since ice put some on and tried to reset, it still thinks there is a ...
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1answer
640 views

why does my heat pump wiring diagram show 7 wires going to the thermostat but the thermostat only says it needs 5?

Here is a link to the wiring diagram for my heat pump. The thermostat that I am planning on buying has the following terminals C, G, Y, O/B, RC, R, Aux, E, and L. The instructions say to jump the RC ...
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1answer
2k 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
254 views

how to change furnace filter (bottom return) for Lennox G43UF

I have a Lennox G43UF furnace and I am not sure if I need to have both a filter for a side return and bottom return. If I do (which sounds logical), where would the location of the bottom return ...
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1answer
234 views

Why does my boiler keep firing up?

My boiler fires up but does it 4 times in a row and then does the same every hour. It's using a lot of money. Should my boiler be doing this? My landlord had a heating engineer out and he said it ...
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6answers
14k views

What type of electric heating system is the most energy efficient?

I am about to buy a flat that hasn't got any central heating system. There's no way to use gas heating. The only way to produce heat is by converting Electricity. The flat at the moment has some ...
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1answer
144 views

Why are only 2 of the 14 posts in my radiator heating up?

I recently changed from oil heat to gas. All the radiators work in my 2 story home except for one on the first floor, which heats 2 out of the 14 posts. I changed the valve, which didn't work. Then I ...
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6answers
4k views

Should I switch from propane to electric heat?

After a downright frightening heating bill, I am thinking of switching to electric heat. I want this to be as little impact to the house as possible. I currently live in a 1100 sq ft manufactured home ...
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1answer
62 views

Heat pump - outside unit fan not running

we recently had an ice storm in the DFW area. Our outside unit is in a shady area that hasn't completely thawed out yet. Therefore, we have significant ice around the unit (and even inside) that ...
3
votes
3answers
4k views

Why would my Goodman gas furnace start but not stay on for more than 2-3 minutes?

I've got a problem with my 15 year old Goodman furnace. It starts w/o problem, inductor begins working, hot surface ignitor lights up and ignites the gas. Then the main blower starts working and the ...
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1answer
249 views

Why won't my electric baseboard heaters work?

I'm installing a 72" 240V baseboard heater in a home office. I ran 12/2 gauge wire, installed a 20 amp 2-pole breaker and 2-pole thermostat. I'm pretty good with electrical, and so I can confirm that ...
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0answers
21 views

Hot water baseboard is hot, but no heat

We have a water heated baseboard in our condo unit. The heat has been working fine for last 4-5 years. Since last four days, the temperature is dropping to 70F. Yesterday morning, it went to 80F and I ...
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2answers
553 views

What type of rubber pipe is used for this particular installation of hydronic radiant in-floor heating, and is it reliable?

I'm looking at a home built in the 80's with hydronic radiant in-floor heating embedded in concrete slab. I've never seen this type of hydronic tubing before. I'm pretty sure that the attached photo ...
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1answer
179 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
28 views

What could be causing my baseboard heater to not heat up?

I have a Dunkirk Gas boiler with an Amtrol Extrol expansion tank Have a weird situation During the winter when it is very cold out, my heat does not turn on automatically. My thermostat may say 70 ...
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1answer
62 views

What is the most energy efficient way to heat a converted garage space?

I'm looking for advice of how to best heat a converted garage space (w/ some insulation). I live in So. Cal and so the lowest winter temp at night is about 40 degrees. Normally I only need to heat ...
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1answer
69 views

Connect Taco Radiator system to a new Honeywell wireless thermostat

I have a Taco model 572 valve connected to an existing wired Honeywell TH8110 thermostat for my oil fueled radiator system. I'm getting a new Honeywell TH6320 wireless thermostat for a new A/C ...
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1answer
56 views

Why would only 1/3 of my registers be blowing warm air?

I have a Coleman gas furnace in a wall space in my house which somehow shares the blower on my a/c unit on the roof because it turns on when furnace is called to start, though it does bump up after a ...
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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
37 views

How do you change baseboard heater to cast iron radiator

All my heat is from cast iron radiators e xcept for one room ( third story loft). How do I change from baseboard to cast iron radiators?
5
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3answers
16k views

How can I prevent my HVAC condensate drain line from freezing?

Last night, my heat (forced air) suddenly stopped. Today, a plumber figured out that my heater is 90% efficient, produces lots of condensate, and the drain line had frozen. We went outside and saw ...
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1answer
199 views

What does the low limit do, and where should it be set on an oil fired hot water furnace?

What does the low limit do, and where should it be set? My furnace has a honeywell triple aquastat relay and has a difference dial. Water temp is about 190 deg F. Also, water psi gauge is only ...
2
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1answer
72 views

What can I do about an old steam baseboard heating valve that wont turn?

It is currently the fall. It is cool outside but is like a sauna inside due to the heaters in my apartment. I have complained about this issue repeatedly to the building super and office. They said ...
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1answer
318 views

Can I replace this Airwell thermostat?

I am in market to replace my simple A/C control unit with one that integrates with home my z-wave based home automation system. However, before I make the splash and buy a compatible thermostat, I ...
0
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1answer
49 views

Baseboard heater and thermostat trouble!

My baseboard heater in a bedroom quit working. I tried to replace it and the thermostat at the same time (both are 120v). Neither would work, so I tested my wires and this is what I got: ground to ...
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1answer
2k views

How to diagnose a broken Aprilaire humidifier (Model 600)?

I have an Aprilaire Humidifier Model 600 (or maybe 600M) mounted on my furnace. The humidifier is not turning on (i.e. letting water flow over the filter) when the furnace is on. The below images ...
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1answer
3k views

Should I block or insulate my air vents for the winter?

I live in a house which consists of a 17 year old extension on a 40 something year old cottage. The two main bedrooms are the only rooms in the house with air vents. They are also two of the coldest ...
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2answers
59 views

How do I calculate CFM for a structure?

This is for calculating the CFM (cubic feet per minute) of air that the blower needs to move in order to compensate the total heat loss (ventilation,infiltration,heat loss through walls, windows, ...
2
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3answers
4k views

How can I retrofit this existing wall-heater with an external thermostat?

My house has several wall-mounted gas heaters. All but one of them have external, easily accessible thermostats. However, the one that happens to be the most used has no remotely mounted thermostat, ...
0
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1answer
69 views

Help needed to calculate the R value of a brick veneer wall (house built in 1958)?

I live in a house that was built in 1958. I am looking for the R value of my brick veneer walls. For that I would need to know how the wall was built (there should be the brick, some sheating, ...