hvac

AC has been running great. I replaced the flex gas line from the inside with a rigid iron pipe. Re-started system and it was running normally. About a week later I replaced the receptacle from a 2 prong to a 3 prong. Luckily there was a bare wire present and receptacle tester gave two lights for...

Was gray PVC ever manufactured? This house was built in 1969. I have a section of the original HVAC condensate pipe I need to repair, and the OD and ID of the existing pipe match the measurements of 3/4" pvc pipe. I'd like to figure out what this material is so I can use the appropriate glue.

I am upgrading my old non-wifi programmable thermostats with Honeywell wifi models. These need a C-wire and my wiring only has 4 conductors and no C-wire (see image). I contacted Honeywell support and they suggest using a C-wire adapter, but it appears my system's air handler units for...

Hey everyone, thank you in advance for any help or steering guidance you might provide on my issue. I've been noticing on and off again sewer smell from our HVAC ducts and traced it to the closet where the setup is housed in a finished basement. I've attached a couple photos here that show the...

Our builder installed a concentrix vent outside our house. We asked them to fix it because it was too low to the ground if we had a big snowfall. So they split the vent for intake and exhaust. See pictures. There is no screen or anything at the ends. Is this acceptable?

Hello, I was testing out coolcalc and I got a solution for a 5 ton AC unit. I'd like to run that same scenario - same house, same insulation etc but test with a 2 ton and 3 ton unit with slightly different specs. I' prefer not to have to enter all the info again. Also I'm not familiar with...

Hi everyone, I'm actually posted here for a well pump right now as well so our cup runneth over as they say. So theres a 20+ year old 10 seer york unit that the compressor failed- At least we are fairly certain of that. Originally I was going to come on here and troubleshoot but at this point...

I’m currently reworking my HVAC for finishing my basement. The house is ICF and well sealed/insulated. I have a single unit for the whole house. Manual J calcs show my existing unit is adequate for the house including the basement addition. I’m relocating the unit from one part of the basement...

I am finishing my basement (ICF) and moving my existing HVAC system/ductwork and taking the opportunity to get a more efficient heatpump that can better ramp down with our loads. I plan to duct the main 1st floor return to the new unit but we also have a return for our sunroom which would be a...

FIRST: Here is the problem, This Time a) FYI- I live on the 2nd FL of a 3 FL apartment complex Last night I flushed the toilet and heard the following sound. https://1drv.ms/u/s!AvNlLICQtuTAkcQY0SrJ-tvIFmBZKA This was close to 2am, so nothing else was going on. No laundry, no showers, no...

Hi All, I have a closed loop baseboard hot water heating system with two zones (one upstairs and one downstairs) in my home. The gas-fired boiler is in the basement. I don't have any air vents on the individual zones, just near the boiler itself. I am attempting to add boiler treatment/cleaner...

I recently moved into a high rise building condo(36 floors) and within the first night I noticed a consistent knocking noise in the wall that is more frequent during early mornings and late nights, it is very noticeable and can be heard anywhere in the entire unit, it is driving my wife and I...

Help! Should I be hearing air flow at my supply ducts? I purchased the most expensive system to help control air noise. It is my understanding that you should not hear the air flow with low pressure systems. I’m getting the feeling that the system ducting was not designed, just thrown...

My honeywell wifi thermostat went blank while my heater was running yesterday and now I can't shut off the heater unless I unplug the York furnace. Here's what I've checked so far but still can't figure out what's wrong and the cause of my blank thermostat. Would appreciate if anyone can give...

I removed old thermostat and only had a 2/22 wire red/white (I have ran a new 5/22 wire) Looked at furnace wiring and have 2 black wires from Fan limit switch (one on 24vac transformer other on gas valve terminal) White wire to thermostat on other gas valve lug, then red wire from thermostat to...

I'm a home owner that received a very unpleasant call while vacationing in Yellowstone from our dog sitter informing us that our downstairs bedroom ceiling had collapsed. repairs needed to the plaster ceiling, two plaster walls and hardwoods in need of refinishing. i am grateful the damage...

Hello, I have a Lennox G51MP Furnace. I recently noticed the condensate trap is leaking. I am pretty sure it is Lennox drain trap Cat # : 61M35 | Model/Part #: LB-96382A. The leak (just a slight but constant drip) is located where the pvc meets the trap's drain stub (at least that what I think...

Hello - Does anyone know how hard or easy it would be to change out the Apollo Hydroheat system? There are two gas water heaters that heat water and are integrated with the HVAC system so the water runs through coils to heat the house. It was installed maybe 20 years ago and one of the water...

I have a continuing problem with a loud noise in my hot water baseboard heaters. I live in a small ranch house with just two heating zones. Sometimes the noise sounds like water gurgling and other times it sounds like someone is pouring a pitcher of water down a gutter. The noise is loudest in...

I’m trying to install an ecobee thermostat. My furnace wiring has a red wire at the C terminal, and white wire at the Y terminal which I assume run to the condenser unit because they are bundled together. Then there is the bundle leading to the thermostat. At the furnace the wires are: green on...