Questions tagged [furnace]
The furnace is part of an HVAC or central heating system used to generate heat. Typically this is done with gas, a heat pump, or an electric element. For hot water and radiator based heating, use the boiler tag.
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Electric furnace install wiring
I just purchased an MBR1200AA1 with 20kw heat strip from goodman to replace an old furnace from the 70s thats recently gone beyond simple repairs.
Want to install it but came across 2 breakers, one ...
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Gas furnace takes like 2-5 minutes from ignition to blower start. flame also burning yellow/orange
It's still heating the house which is why we have never considered it a problem so far this season. However I recently got a smart thermostat and really started noticing how long the startup takes to ...
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How can I control the speed of this AC motor?
I have this old 1/3 HP AC Motor attached to a furnace fan that I want to control the speed of. I want to slow it down. I have done a lot of research, but I am not an electronics engineer so I get ...
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What would cause a furnace to randomly fail to light roughly once a week?
Roughly once a week my furnace will shut off. No error codes are flashing. I turn the switch off and turn it back on and it will relight without an issue or error. There was a single occasion where it ...
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We have a one year old modulating Goodman furnace that vibrates on high fan
We've had it for about one year. The last part of its heat cycle it goes to high fan. When on high the furnace shakes and vibrates the main trunk of ductworks. This has been going on for a month. The ...
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Pilot light going out on my furnace
So I replace the thermocouple on my furnace a few weeks ago and it wasn’t the correct thermocouple the only difference was the housing so I figured I’d use it but what happened was the flame from the ...
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How can I identify my electric furnace?
I have a woodchuck wood and coal furnace which someone added an electric heater on top of. The issue is I can't identify the electric heater, and it's in need of some servicing. Anyone recognize ...
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Can I enclose my oil furnace with drywall?
I want to enclose my oil furnace with drywall and use the other space as a gym. Can I close off the furnace and add an electric fan from gym to the furnace room?
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Intermittent Furnace Blower Restart During Heating Cycle
I have a Goodman gas furnace that I noticed occasionally (1 out of 50 times) acting strange. A few minutes into the call for heat I hear the blower turn off and begin spinning down but immediately ...
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Thermostat resetting to wrong temperature
I have an Emerson programmable thermostat (seems to be similar to https://climate.emerson.com/documents/blue-universal-thermostat-istruction-sheet-en-4211880.pdf). I went through and programmed it ...
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24v Doorbell Transformer for Smart Thermostat
I have searched for this topic and the previous answers are not conclusive to me so I will try again with my specific situation. Thank you in advance for your help!
Current situation: I have a 16V ...
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My draft inducer fan slows down and then shuts off after ignition
I just replaced the draft inducer motor/fan. the old one was screeching and difficult to spin.
After replacing the part, the draft inducer starts, and the ignition occurs, but before the blower motor ...
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Inducer motor is not spinning
My furnace is not working. I see that the inducer motor (Fasco 70623925) is not spinning (it turns freely when I spin it by hand though). The motor threatens to run when the heat signal is received, ...
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What is the non-specified tolerance of the capacitor of my furnace's inducer motor?
My furnace's inducer motor (Fasco 70623925) has a capacitor that does not specify the tolerance. It only says 4uF, 370vac, 50/60Hz. How can I find out its tolerance? I'm getting 3.7uF with a ...
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Is a Cold Climate Heat Pump The Best Option to Replace Gas Furnace? [closed]
I live in the Canadian prairies (cold winter -30C or below possible, hot summer +30C or above possible). I recently purchased an AC unit and have had it installed. Recently, my circuit board on my gas ...
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How to troubleshoot a new ignitor not working?
My furnace's model is GMNT100-4. I replaced my ignitor with this new ignitor
I only worked for a couple hours. I never touched the carbon. Only held it from the silicon. Though my access to the ...
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Why does my furnace shut off with the fan running?
I changed out the thermocouple and I’m still having the same problem with it starting and running for a while then will shut off and the blower motor will just run. I took off the high limit switch, ...
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Ecobee SmartThermostat - Blue connected to W at furnace, what to do?
Trying to install my new ecobee SmartThermostat. Furnace is a Trane heat pump, 20 years old from when the house was built.
When I looked at the existing thermostat, it has RGWY.
So I thought I needed ...
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Starting to trouble shoot electric furnace failure, I need some suggestions where to start
A little more info prior to failure. The main service line pulled loose from the top of the sevice pole to the residence, which caused major issues to appliances and outlets throughout the home.
Once ...
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How can I prevent fiberglass duct insulation from being blown into my living space?
For no explainable reasons (there are other materials that are not health hazard which provide sound insulation), manufacturers put fiberglass in the register boxes. I moved into a new, old, apartment....
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Why does my furnace take 3 or 4 tries to get started?
I am having an issue with my Trane XR90 furnace. The problem is that the inducer motor turn on and shuts down for three or four times. After 3 or four times, the furnace kicks on and unit works fine. ...
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Should my humidifier be able to maintain 38% humidity in the winter?
I had an Aprilaire AA700M humidifier installed on my gas furnace last year. Everything worked fine from what I could tell. Fast forward to this winter, and the humidifier isn't keeping up with the ...
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Can I convert my oil furnace to "cold start?
The domestic hot water coil has been removed from my oil fired furnace and the aquastat limits are 130 low / 160 high degrees F. The furnace comes on frequently to maintain the low limit however we ...
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I need assistance converting thermostats from a Honeywell RTH2300B1012 to Honeywell RTH5160D1003
I currently have a home with 3 zones and a central A/C and oil-fired forced hot air. The way the system has always worked in the main stat has to be set to heating or cooling for the others to run ...
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Rheem ac and furnace as one unit model RRGG- 07E24 JKR [closed]
I have the C wire, 5 wires total. Trying to find where to hook up the C wire in the furnace. This furnace does not have a board with the wiring like most do, the 4 wires are connected, the c wire, no ...
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Furnace not turning on
what does it mean when the furnace comes on right away an then off and on and that's all it does. Thanks for the answer in advance
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Furnace extinction pop
I have a newer central air unit, amana updraft w/ng furnace). Everything works fine on the unit and has no issues except everytime the thermostat reaches the set heat temp when it calls the heat to ...
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Carbon monooxide poisoning by using natural gas stove
Back in the day I used to cook food in a small, badly ventilated room with a natural gas stove, turning it on for a relatively small intervals during the day, let's say 1-3 hours per day in total.
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Becket oil fired furnace blower won’t kick on
So I’m having problems with the blower in my furnace. I can get it to light and it gets a good flame, but the blower won’t kick on. I’ve replaced the limit switch and took the motor off to see if it ...
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Furnace Fresh Air Intake
Can anyone tell my if my furnace has a fresh air intake ?
I'm moved into my house a few months ago (Toronto, On, Canada) and noticed there are no pvc pipes on the outside of my house like all my ...
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HVAC indoor unit makes buzzing sound
Not 100% sure if this sound was always there, sounds like an old capacitor sound. AC works fine.
https://youtube.com/shorts/nEk8XfcMSJM
Is this normal? How can I fix it?
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Can I use a Honeywell Cwire adapter on a 2-Stage Condensing Furnace?
I'm currently trying to add a Amazon smart thermostat to my Trane UH2B060A9V3VA furnace. When I had my AC service earlier in the year I mentioned the project to my heating and cooling guy and though I ...
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Furnace exhaust vent on roof freezing
My furnace exhaust pipe vents out through the roof. How do I prevent ice accumulation from blocking the exhaust pipe? I have a high efficency furnace.
We replaced our gas furnace with a high ...
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Is this my furnace's flame sensor?
I’m trying to troubleshoot my furnace burners turning on for 30 seconds then turning off, then my blower motor turning on for 2 minutes. I’ve been told that it could be that my flame sensor needs to ...
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Can I put a garage sink in this utility closet?
See picture. I have a utility closet in my garage with a tank to tankless hot water heater conversion and a gas heater central A/C. This was like this when I bought the house, except the other night,...
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Furnace problems after dust accumulation
I’ve been doing some DIY projects these last couple weeks and some of them have caused there to be alot of dust, one in particular is the grinding of an old brick wall I want to expose. I wasn’t ...
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Why is my furnace burner going out after 30 seconds?
My furnace pilot is throwing a flame on the flame sensor (or what I believe it to be). The furnace burner is igniting and staying lit for about 30 seconds, then the burner goes out and the blower ...
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Rattling (sounds like a leaf or two) from furnace exhaust pipe
Up in my attic today, I noticed a rattling sound coming from the furnace exhaust pipe when the furnace is on. It sounds like a leaf or two rattling around. It is at the lower part of the exhaust ...
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Do I need louver door or grill in wall for this hvac room?
I have attached a picture of my hvac or furnace room with its size. The area has a water heater and furnace which runs by natural gas.
I have planned to have door on both water and furnace side.
So ...
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Goodman GM880804BNBA ignitor will not stay on
I have a Goodman furnace model # GM880804BNBA that stopped working.
The ignitor fires and three seconds later the gas valve clicks, and the ignitor and inducer shut off before the gas starts to flow.
...
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Is it possible to replace a relay on a ncm300 zone controller?
I have an ncm300 zone controller which controls the 3 zones for my furnace and heat pump. There seems to be an issue with a relay sticking which is causing a continuous call for heat even when ...
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Carrier Model 59MN7A080Vxxx high efficiency gas furnace has internal rust - remove? coat? treat?
Our carrier high efficiency gas furnace was not checked for many years and has internal rust on panels due likely to a clogged drain tube causing condensate to drip inside furnace (see photos). No AC ...
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Gas furnace switch to heat pump installation?
I currently have a gas furnace/AC combo, but would eventually like to replace the entire system with an air source heat pump. I imagine this won't be a small or simple project, so I'm curious what all ...
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furnace not always turning on
I have a Carrier gas furnace.
For some reason, when I switch it on via thermostat, it SOMETIMES turns on, but SOMETIMES, it gets stubborn and refuses to turn on.
These are the symptoms:
When it's ...
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Tech says furnace has no ground [closed]
I hooked up an Ecobee 3 thermostat that has worked great the last couple years. This weekend my furnace went out.
I had a tech came out and he got it going again but told me it would work better with ...
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Trouble getting power to Honeywell T9 from furnace
My previous, antique thermostat was only a two wire and we are trying to upgrade to a smart thermostat. I'm having trouble getting power through the green "C" wire though and I'm hoping my ...
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Help with replacement for inducer motor in Furnace
My furnace (Ducane cmpe05ou3) started to make loud noises. When I inspected the propeller of the inducer motor, is was cracked.
The motor is a Fasco No 702111361, P/N 20538701, 115V, 60Hz, 1.9A, RPM ...
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Older Coleman Electric Furnace Not Used
My wife's family has this older Coleman electric furnace in their mobile home that is not being used, instead they use electric space heaters. We're not sure how long the furnace has been unused or ...
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How do I seal my furnace exhaust penetration?
Problem
My oil burning furnace exhaust/intake manifold does not appear to be sealed properly (daylight and draft visible) from the inside and I wish to seal it.
I also believe mice are getting into my ...
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Solved: Y wire connected to C via a remote wall switch (not really)
In my new home I’m about to upgrade the thermostat. The unit is Honeywell AC plus gas furnace 2 in 1. New thermostat is a Honeywell as well. There’s no C wire in the wall, so instructions say: on the ...
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