I had three HVAC guys come out to fix a short cycling gas furnace issue in Jan. First two couldn't figure it out. The first guy LITERALLY DISCONNECTED the inducer start capacitor almost right in front of me. "Oh here's one issue, your inducer is starting super slow." Me: "Is the start capacitor still connected." "Oh I must've bumped into it by accident" as he reconnected it. 2nd guy: incompetent, All of them trying to sell a new unit badly. By the time the 3rd came out I had learned everything there is to know about my furnace (I'm an Electrical Engineer) by studying the install manual for hours; I sat him down and asked him to check the condensation trap first. He did. That was the issue.
We fixed that, it ran ok but later I still had an issue with the heat exchanger leaking, so I decided to get a new furnace anyway.
One quote: $6k to $16k . It only needed a 60k BTU natural gas furnace, no new ducting or exhaust etc.
Did it MYSELF for $1600 for a 96% furnace. converted it to direct vent, all new PVC drain piping for both AC and furnace, and installed a concentric vent. Had to buy about $400 worth of tools and materials. Paid a friend $200 for help. So about $2200 and I still have the tools.
Pulled the permits from the local county, which is 100% legal in this county for your own house.
Installed in two weeks (took my time). The job was so well done the inspectors literally looked at it for 10 seconds and said it passed (mechanical + electrical). Delta temperature measured: in spec. Clocked the gas meter: within 2 seconds of ideal. So middle finger to the HVAC industry! I will do the same when my AC goes out! I'll get the tools and the refrigerant license and do the D** thing myself.
They pushed me over the edge. The issue with HVAC industry compared to automotive is that HVAC does NOT have standard fees. They charge variable pricing based upon how cold or hot it is, and upon how desperate they think you are. I told one guy I got a TRANE 17 SEER AC + furnace two years earlier for $5500 after rebates so why would I pay $6k to $16k for JUST a furnace? And they always Gaslight you: "oh I saw that outdoor unit for your upstairs, it's not a 17 SEER I can tell you." "Oh yeah I remember numbers really good and that's one number I KNOW is correct, it's a 17 SEER" I said firmly.
At least with automotive the rate is always the same: if the book says it's a 3 hour labor job: I pay 3 hours + parts, ANY DAY of the year. Only thing that changes mostly is the labor rate between businesses, but not that much. It's not some BS " oh his car is broken down he's desperate so let's really stick it to him." Now scam repairs is another issue entirely, but no different than HVAC scam selling new units unnecessarily.