Author Topic: Requesting HVAC Advice  (Read 3829 times)

Freedom Invested

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Requesting HVAC Advice
« on: June 08, 2017, 04:22:46 PM »
So it is a bit hot in here as my furnace blower, which supplies airflow to the house, is potentially broken.

Even though my A/C unit outside turns on when setting the temp lower than the current temperature, there is no air flow in the house.

I paid an electrician ($99 + tax) to come out and verify that it was indeed the blower. I was quoted an astronomical ~1,900 (USD) to replace the part. His company must have insane overhead because I found blowers online that may meet my needs for ~$100 or less. Further he was a hard sell telling me, "Oh, those units you have are bad... yadda yadda. You need to replace both your furnace and A/C outside which are going to run you 10,000-14,000 depending on how good you want to go." Bullshit. I may replace them later, but after more research into what would be efficient. I just need the things to run for now. 

Should I replace the blower? Should I also replace my run capacitors too? How dangerous is discharging these capacitors? I read they might discharge automatically on more modern units. The manuals the last home owner had were dated 2011. What else do I need to consider and check? I have not yet opened the furnace, but I have been watching YouTube videos to have some idea of what I am doing. I plan on taking pictures of everything so I can wire it back up.

Thank you for any help you can give.

sol

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Re: Requesting HVAC Advice
« Reply #1 on: June 08, 2017, 04:37:32 PM »
I recently replaced​ a blower motor and control board for under $300, and more than half of that was the control board.  Another guy quoted me $600, and the third wanted to replace the entire furnace for about $3k.

The HVAC world is apparently rife with rip off artists.  I'd call a series of independent (not manufacturer representatives) HVAC small businesses, and tell them you think you need a replacement motor for your blower, and ask what they estimate they would need to charge you to do it.

And remember you never have to pay someone who doesn't do good work.  Just don't.  The guy who tried to tell me I needed a $3k new furnace instead of a $50 part actually removed my old control board and took it with him, so I couldn't even verify there had been anything wrong with it, then tried to charge me $300 for the service call in which he fixed nothing, lied about the problem, and stole from me.  Needless to say, he didn't get paid but I left him a lovely Yelp review instead.

Freedom Invested

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Re: Requesting HVAC Advice
« Reply #2 on: June 08, 2017, 04:44:12 PM »
I recently replaced​ a blower motor and control board for under $300, and more than half of that was the control board.  Another guy quoted me $600, and the third wanted to replace the entire furnace for about $3k.

The HVAC world is apparently rife with rip off artists.  I'd call a series of independent (not manufacturer representatives) HVAC small businesses, and tell them you think you need a replacement motor for your blower, and ask what they estimate they would need to charge you to do it.

And remember you never have to pay someone who doesn't do good work.  Just don't.  The guy who tried to tell me I needed a $3k new furnace instead of a $50 part actually removed my old control board and took it with him, so I couldn't even verify there had been anything wrong with it, then tried to charge me $300 for the service call in which he fixed nothing, lied about the problem, and stole from me.  Needless to say, he didn't get paid but I left him a lovely Yelp review instead.

Wow. What an asshole.

Thank you for the advice Sol. I'm still considering if I will attempt this myself; I don't really want to pay any more than $400 to get this fixed.

Anyone reading, watch this: https://www.youtube.com/watch?v=E2j3EkEP3Zw
And this: https://www.youtube.com/watch?v=Jz3DyCSKGB4
Read this: http://www.wikihow.com/Discharge-a-Capacitor

Freedom Invested

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Re: Requesting HVAC Advice
« Reply #3 on: June 11, 2017, 11:23:47 AM »
I fixed it myself for the cost of the blower motor, research, and sweat. $258.99 + $99 (diagnostic fee) instead of $1884 + $99 (diagnostic fee). I'm calling this one a win. :)

cadillacmike

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Re: Requesting HVAC Advice
« Reply #4 on: June 11, 2017, 12:43:24 PM »
Kudos! I'll keep this thread in mind if I have problems in the future.

sol

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Re: Requesting HVAC Advice
« Reply #5 on: June 11, 2017, 12:48:10 PM »
Nicely done, FI.  Saved some money, and learned something new.  Definitely a win.

Freedom Invested

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Re: Requesting HVAC Advice
« Reply #6 on: June 11, 2017, 04:06:30 PM »
Kudos! I'll keep this thread in mind if I have problems in the future.

Thanks. I hope it helps!

Nicely done, FI.  Saved some money, and learned something new.  Definitely a win.

Exactly. The hardest part was learning how to mill into a rusted/fused to rotary fan blower motor with an impact drill (which is good because I have been feeling guilty about this thing just sitting around). I slightly cut my thumb on some metal shrapnel, but it was worth the money saved and knowledge gained easily.


cadillacmike

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Re: Requesting HVAC Advice
« Reply #7 on: June 12, 2017, 12:54:29 AM »
^^^ You used a hammer drill for plain old drilling? That was overkill. Sure it will get the job done, but it's Heavy. I have the older 18V of that same DeWalt Hammer drill, but I also have a much lighter plain 3/8 DeWalt drill that takes the same 18V batteries, and it is less fatiguing to use. I only use the hammer drill for drilling in concrete / masonry or very deep (4" or deeper) wood.

Freedom Invested

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Re: Requesting HVAC Advice
« Reply #8 on: June 12, 2017, 08:29:46 PM »
^^^ You used a hammer drill for plain old drilling? That was overkill. Sure it will get the job done, but it's Heavy. I have the older 18V of that same DeWalt Hammer drill, but I also have a much lighter plain 3/8 DeWalt drill that takes the same 18V batteries, and it is less fatiguing to use. I only use the hammer drill for drilling in concrete / masonry or very deep (4" or deeper) wood.

Considering the metal was very tough to get through and took awhile, I think a hammer drill was necessary.

TaraB

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Re: Requesting HVAC Advice
« Reply #9 on: June 14, 2017, 05:36:22 AM »
Ok it's a few days later but last year we paid roughly $2000 for a blower motor to be replaced by a large company in New Jersey (their trucks are all over the place). Glad to hear that in the future maybe it's something I could maybe tackle!

trollwithamustache

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Re: Requesting HVAC Advice
« Reply #10 on: June 14, 2017, 08:12:21 AM »
I'm glad you did the blower. That bogus price you got quoted means the guy deserved not to get the work.

Do be careful with the capacitors. They really can discharge and you really don't want to them discharging to you. Verify they are drained, and then re-verify. With Electrical you can't go wrong re-checking with the multimeter too many times.

Freedom Invested

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Re: Requesting HVAC Advice
« Reply #11 on: June 14, 2017, 05:47:17 PM »
Ok it's a few days later but last year we paid roughly $2000 for a blower motor to be replaced by a large company in New Jersey (their trucks are all over the place). Glad to hear that in the future maybe it's something I could maybe tackle!

Definitely do the research! You would be amazed what you can do. I know I am happy with the skills I am learning. :)

I'm glad you did the blower. That bogus price you got quoted means the guy deserved not to get the work.

Do be careful with the capacitors. They really can discharge and you really don't want to them discharging to you. Verify they are drained, and then re-verify. With Electrical you can't go wrong re-checking with the multimeter too many times.

Supposedly this company is known for way over-charging in my area (n= a few coworkers). I'm also glad I did not use them other than their diagnostic, which only confirmed what I had already figured out.

I was worried about the capacitors and researched those a bunch. I'm still breathing and I intend to keep it that way while working on electrical devices.

Alim Nassor

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Re: Requesting HVAC Advice
« Reply #12 on: June 14, 2017, 11:32:43 PM »
For future reference, there is a Youtube video on how to fix dang near anything.