What r/hvacadvice keeps coming back to
Complaints raised here by more than one person. One-off posts are not included.
469 recurring problems · 3154 threads read · read since September 2026 · Reddit
Raised more than once here
Most people first.
- 167Vehicle cranks after fuel pump replacement but won't start“I have a blower motor issue which I’m diagnosing a bad blower motor but just wanting to get advice. I have an ECM motor which I checked for 240V going into the motor and a 24V signal and I get both. Condenser comes on but furnace does not. Any advice or I’m good to change out the motor?”
- 147How to explain an intermittent car noise to a mechanic“I keep hearing this humming noise (see video) on and off while the AC is on.”
- 131Is this mechanic repair quote too high?“Fill it with about 5–10 lbs of “top premium quality Freon,” which he said is $29 per oz. Is this normal?!?!”
- 128How do I identify if these bugs are bed bugs?“Hello I've been dealing with a massive gnat problem and can't seem to find the source.”
- 126How to fix a leaking water pipe in a tight space“Never had any issues with the boiler but I just noticed the leaking a couple days ago. PSI is normal. All the valves are in the right positions. What could be causing this? Please help!”
- 114Should I pay for appliance repair or fix it myself?“Hello there! Looking for some advice about whether something is reasonable or not.”
- 113How do I know if a contractor quote is fair?“4 Bids on a full system replacement. Help me decide and not get distracted by the noise.”
- 111How to handle a bad contractor who won't fix poor work“I foolishly paid the invoice before asking for photos or inspecting the job because I thought that it was straightforward and there was no way that it could be done so poorly as this.”
- 94Landlord built a fence around the AC and it broke“Realistically, how long does the repair take? We’re in the middle of a heatwave and I have a newborn. I can make plans to be elsewhere for a day or two but I’d really like to be able to stay home with my baby soon.”
- 94How to figure out what an unfamiliar car engine noise is“I heard the AC unit kick on and it sounded louder than it normally does with a slight whine.”
- 80How to clean burnt food off a stainless steel pan“I pulled a couple of pieces of by hand...but will need a scraper and brush i guess....how much will just burn off? If I ran it in garage ?”
- 79How to find reliable contractors who actually show up“Most companies won’t install customer purchased equipment. Most will not guarantee the equipment if it’s purchased by you or warranty it either.”
- 77How to get an entry level job with no experience“I haven't but when I applied for apprenticeships they repeatedly told me I lack experience....”
- 69Why are contractor and window replacement quotes so absurdly high?“As the title states I got quoted 33k for an AC unit and a heater.”
- 57How do I know if I can DIY a repair or need a pro?“I was quoted $2285 all in. Seems crazy to me but looking for insight.”
- 55How to choose between different HVAC replacement quotes“Have gotten a few quotes from companies in my area with good reviews, looking to get some advice/opinions.”
- 50How to fix a leaky plumbing valve that doesn't fit a new faucet“I need to replace this valve. But I’m only here this weekend and direct replaces are not available”
- 48Water keeps getting in the house during heavy rain“Water from the condensing coils is splashing around getting on the floor and wall walls.”
- 47How to know which replacement part code to buy“I cant find genuine goodman parts for my aircon unit anywhere in town. I am also struggling to find them online.”
- 46Why does my new plumbing still have bad water pressure and risky joints?“Am i crazy or should the pvc piping be copper?”
What this forum worries about more than the rest
How much more often a topic shows up here than across every forum we read.
furnace12.8×furnace repair12.8×heating system12.8×air conditioner12.8×