Can A Fairly Handy Homeowner Swap Out A Scroll Compressor That Failed? - HVAC - Page 5 - DIY Chatroom Home Improvement Forum
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Old 04-01-2020, 09:11 PM   #61
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


You might be able to get a quote for a R407C RTU/package unit. But you won't get a quote for an R22 RTU/package unit, as that would be an EPA violation for them to make one. Whether dry shipped or not. Plus it would also be an EPA violation to charge any new unit with virgin R22.



Dry shipped condensers were allowed because they were considered a repair part. An entire package unit is not a repair part.
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Old 04-01-2020, 09:21 PM   #62
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


Quote:
Originally Posted by beenthere View Post
You might be able to get a quote for a R407C RTU/package unit. But you won't get a quote for an R22 RTU/package unit, as that would be an EPA violation for them to make one. Whether dry shipped or not. Plus it would also be an EPA violation to charge any new unit with virgin R22.



Dry shipped condensers were allowed because they were considered a repair part. An entire package unit is not a repair part.

Agree. The distributors are not making the product- there pushing the tin. However there is still a surplus of MADE R22 units that are dry available post production - already made ( made on the engineering of the refrigerant); however I wouldnt put R22 in the unit I would use R-427A work with the 9 degree glide.


Excited to see what comes back and the price.
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Old 04-01-2020, 09:26 PM   #63
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


Well, we'll be waiting for you to post a pic of the invoice/quote of these units.
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Old 04-02-2020, 09:59 PM   #64
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


Got the first quote from a local HVAC company today. Including tax, it was $6500 for a 3 ton package unit. Ouch. I'll also be getting quotes from a few others in town, to see if they are all this high.

I'm still keeping one eye on online units, especially now that I know it's going to be so expensive. I have a small king in the hole, as my next door neighbor used to do HVAC work, and was certified on some stuff when he did it.
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Old 04-02-2020, 10:07 PM   #65
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


Alpinehomeair.com
3 ton Blueridge BPGE1436-072P
PRECHARGED
$2316, free shipping.

It's worth a look.
Use your "king" in the hole.
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Old 04-02-2020, 10:15 PM   #66
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


Here is what the ducting hookups currently look like, btw. The return air is on the bottom, and the duct going to the house loops up and over.











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Old 04-02-2020, 10:31 PM   #67
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


It not unlikely that you may need to configure ductwork with whatever you buy.
That is another reason that the pricing from an HVAC contractor is considerably higher. That and the warranty, installation expertise, etc.
I am not trying to dissuade you, but you already know these things.
Before you buy anything on your own you can make a few calls to see if you can find someone who is willing to do the tin work, if needed. It looks like flex duct may be all you need. You can get the specs from any equipment distributor first before you buy. And FYI, you can get a Rheem unit but that will be over $4000.
It may solve the fitment problems though....not saying the extra cost would be worth it.
I have no doubt you will figure this out.
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Old 04-02-2020, 10:44 PM   #68
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


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And FYI, you can get a Rheem unit but that will be over $4000.
Fixed it for you
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Old 04-02-2020, 10:46 PM   #69
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


OP, these units are about as simple as simple can get. You can have that old unit unhooked and on the truck in 45 minutes. Biggest pain is just getting duct to line up.
That supply should be adjusted anyhow. Not promoting very good airflow with the flex bent over so sharply.
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Old 04-03-2020, 12:59 AM   #70
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


the gas hookup should be done by a tech.

blower speed adjustments may be required to get proper airflow on your duct system.
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Old 04-03-2020, 04:22 AM   #71
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


https://www.diychatroom.com/f112/con...elines-197112/


https://www.diychatroom.com/f112/con...2/#post4131441


Quote:
When you quote someone, DO NOT CHANGE THE QUOTE.
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Old 04-13-2020, 12:49 AM   #72
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


I got a couple other quotes over the phone and they were ~$4500, but said it would be additional for ductwork, which they would have to come on site to quote. So might be a bit cheaper than the $6500 quote.

Anyway I'm probably going to go the online package route, only thing that gives me hesitation is the ducting, but I've been researching and thinking, and starting to get a plan.

I dont mind paying someone to do tinwork if needed, but I'm still trying to plan it out before I go clicking on a bunch of 'buy now' buttons.

Here's the connections without the flex duct. The return air duct wasn't hooked to anything, it just vented into the enclosure... not sure if that was appropriate or not, but that's how it was operating.








I crawled under the house to check out the situation, and discovered that the return duct exits the floor as a 16" flex duct... runs about 8 feet, and transitions into the metal rectangle duct (28" x 8"), which runs about 10 feet out to the unit.





The units I'm looking at use 14" connections... 3 ton, or maybe 3.5... I'm going to talk to them about tonnage and my situation.

So... just off the top of my head, it looks like that will be a pretty easy solution for the return air. Just eliminate the metal return duct, and run 14" flex into the crawl space and use a reducer to join it to the 16".

Or, if there is an issue with using that much 14", I can extend the 16" to the unit and reduce it there.

Does that sound like a solution for the return ducting?
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Old 04-13-2020, 03:29 AM   #73
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


Depends on how well you stretch out the flex. No harm going with 16" and then transitioning down to 14" at the unit.
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Old 04-13-2020, 09:36 AM   #74
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


I'm just glad we stopped talking about R22. With the unit being self contained it really doesn't have to work with anything but the ductwork. And ductwork is all-fab, all the time.
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Old 04-16-2020, 01:58 AM   #75
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Re: Can a fairly handy homeowner swap out a scroll compressor that failed?


I've been reading about ducting and CFM, and I'm puzzled about something.

The unit I'm looking at uses 14" square to round connections. On the body of the unit, the return cutout is 17" x 13", while the supply cutout is only 14" x 13".

I'm not sure what the CFM would be for the 14" x 13" cutout, but most sources I've seen say that a 14" round duct is only good for around 700-750 CFM.

The specs say the unit has a CFM of 1200, so how can it reach 1200 if I'm forced to use 14" ducts on both supply and return?

Am I missing something? Does a chokepoint not limit the CFM?


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