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A/C Help!!!! #8039034 11/05/20 02:45 PM
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Under contract on a home, and need y'alls help asap!

Inspection was yesterday, and they found that the air conditioner has an issue. Inside unit is original, 2008, with R-22 freon. Outside unit was replaced in 2018 and has the new R-410 freon.
Unit wasn't operating to capacity and only read a delta of 12, and was filthy. He recommended having someone look at it for the compatibility issues, and a servicing at minimum.

Is this a case of a big no-no, and we should request the inside unit be replaced so the system is not mixed with different freons that operate properly at different pressures? Or is this just a ehh, they cheaped out, just a big service/cleaning and we should be okay for a while longer?

Thank yall so much!


It's hard to feel sorry for someone with one leg who shoots themself in the foot.
Re: A/C Help!!!! [Re: HunterMattW2] #8039048 11/05/20 02:50 PM
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Don't know much about your AC but have bought several houses over the years. They always leave a little wiggle room. Get them down to their lowest price and tell them to replace the AC. They probably won't do it , but should drop the price even more.


Quail hunting is like walking into, and out of a beautiful painting all day long. Gene Hill


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Re: A/C Help!!!! [Re: HunterMattW2] #8039056 11/05/20 02:53 PM
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They probably just opted to have the condenser upgraded and metering device changed. Happens a lot.


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Originally Posted by machinist
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Re: A/C Help!!!! [Re: HunterMattW2] #8039072 11/05/20 03:06 PM
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Our house has 2 units, and each was on the separate freons like you describe. There's no issue with it. Yes, the older unit may go out soon. Just ask the seller to provide a home warranty for a year or two. We did this on our first house we bought. But running 2 different types of freon is fine. They are phasing out the R22 systems, which our new unit went to the new stuff.



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Re: A/C Help!!!! [Re: HunterMattW2] #8039077 11/05/20 03:08 PM
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Try to keep this short.

As the industry transitioned from R22 to R410A, some coils were cerified to operate with both refrigerants.
If so, performance diffence is ususaly not noticeable. But, there will be a loss. Also, the origjnal equipment is approaching the end of it's life cycle.

You can read the model number nomenclature, you will see the refrigerant. If it read R22 and or 410A, the coil may be used for both.

If it Read R22 and does not mention R410. That would be a game changer.

Now, SEER rating mix match can be a issue as well. Did inspector provide you with pictures?


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Re: A/C Help!!!! [Re: HunterMattW2] #8039083 11/05/20 03:11 PM
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I had one in a new house in New Orleans that was simply underpowered. It need to be replaced.


Quail hunting is like walking into, and out of a beautiful painting all day long. Gene Hill


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Re: A/C Help!!!! [Re: HunterMattW2] #8039104 11/05/20 03:21 PM
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What Lazyjack said. The evaporator coil is most likely rated for 410a and should be fine. A system can not run properly on an mixture of two refrigerants.

You said that the unit was filthy so it must be cleaned to get proper readings. All the duct work should be checked as well.

Re: A/C Help!!!! [Re: HunterMattW2] #8039164 11/05/20 04:17 PM
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Wouldn't that be like taking possession of the house before he closed? I never would have allowed anyone to work inside my house before closing.


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Re: A/C Help!!!! [Re: HunterMattW2] #8039175 11/05/20 04:22 PM
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Inside unit original. . . . How old is the house?


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Originally Posted by machinist
Man if I knew what Oxner knows I could throw away what I know
Re: A/C Help!!!! [Re: HunterMattW2] #8039215 11/05/20 04:42 PM
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Originally Posted by HunterMattW2
Under contract on a home, and need y'alls help asap!

Inspection was yesterday, and they found that the air conditioner has an issue. Inside unit is original, 2008, with R-22 freon. Outside unit was replaced in 2018 and has the new R-410 freon.
Unit wasn't operating to capacity and only read a delta of 12, and was filthy. He recommended having someone look at it for the compatibility issues, and a servicing at minimum.

Is this a case of a big no-no, and we should request the inside unit be replaced so the system is not mixed with different freons that operate properly at different pressures? Or is this just a ehh, they cheaped out, just a big service/cleaning and we should be okay for a while longer?

Thank yall so much!


Any issues or problems should be fixed by current owner to your satisfaction before you close. Get a qualified HVAC person (not a home inspector) to advise you.


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Re: A/C Help!!!! [Re: bill oxner] #8039218 11/05/20 04:44 PM
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Originally Posted by bill oxner
Wouldn't that be like taking possession of the house before he closed? I never would have allowed anyone to work inside my house before closing.


No. He's buying a house and this was an inspection...that is where you get results and negotiate what needs addressed and what you will take care of after closing.

Bill - you've posted 3 times on the thread....1 question and 2 completely irrelevant comments. That impressive worthlessness even for you. up


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Re: A/C Help!!!! [Re: HunterMattW2] #8039227 11/05/20 04:48 PM
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Tell the seller the A/C needs to be completely replaced and reduce your offer by 10K. If he balks, walk.

Re: A/C Help!!!! [Re: HunterMattW2] #8039231 11/05/20 04:49 PM
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i would, at a minimum have the evap replaced with a evap that is ahri matched to outdoor unit. or the money to do so deducted from purchase price of home. where is" the big m "at?

Re: A/C Help!!!! [Re: AMF] #8039237 11/05/20 04:50 PM
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Originally Posted by Duke107
Tell the seller the A/C needs to be completely replaced and reduce your offer by 10K. If he balks, walk.

or this

Re: A/C Help!!!! [Re: Poppa] #8039244 11/05/20 04:53 PM
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Originally Posted by Poppa
i would, at a minimum have the evap replaced with a evap that is ahri matched to outdoor unit. or the money to do so deducted from purchase price of home. where is" the big m "at?


Midlo?


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Originally Posted by machinist
Man if I knew what Oxner knows I could throw away what I know
Re: A/C Help!!!! [Re: HunterMattW2] #8039246 11/05/20 04:54 PM
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House was built in 2007/8, the a/c in question has a 2007 tag.

Yes he sent pictures with the report, it just blurs out when I zoom. They're attached within the pdf, not separate. He has them listed as R22, not R22 and/or R410.

We're asking for an a/c company to come out and fully service/clean the entire hvac system, including ducts. Also to inspect and diagnose the unit in question and if its compatible and was retrofitted properly or if it truly was a case of pulling the wool of sorts on an elderly couple.

If it all checks out, just service and we on our way, if not, well then we'll cross that path if they push back on replacing the inside unit.

thanks for the help, and yes home warranty is happening now.


From the big M........Mansfield


It's hard to feel sorry for someone with one leg who shoots themself in the foot.
Re: A/C Help!!!! [Re: HunterMattW2] #8039256 11/05/20 05:01 PM
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07, I’m sure it is.


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Originally Posted by machinist
Man if I knew what Oxner knows I could throw away what I know
Re: A/C Help!!!! [Re: HunterMattW2] #8039605 11/05/20 09:17 PM
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Be advised - There is zero chance in hell that a 'home warranty' company is gonna cover replacing a "Franken-system" that's broken/underperfoming , with a new properly matched split system.
You're gonna end up eating the entire cost in this situation, with a home-warranty co; they look for ANY reason to deny a covered claim, and a FRANKEN-SYSTEM is an easy out for them to deny it.
They will then tell you that the cost to fix this 'mess' is "gonna be $12,000 - but since you have the warranty with them, they will do it for $10,000. Meanwhile, a decent HVAC co, in the off-season, can be bargaine down to about $6k for a 'builder-grade' matched system replacement. Heck - you can mailorder the hardware delivered for under $3k - https://iwae.com/shop/3-ton-13-seer...-split-system-multiposition-ha11705.html and find a ac techie off-season to swap it for $1000 cash.

Best to have that system looked at by a certified HVAC company - and give you a write-up on what you have there and ask them if they're also gonna be willing to service the "Franken-system" if and when necessary.

I'd ask for at least a 5k deduction on house price if this system is 'hacked' together - it may be a 3-ton 12seer condenser running with 2-ton 8 seer performance due to 'mismatch' hack.

Last edited by oldoak2000; 11/05/20 09:39 PM.
Re: A/C Help!!!! [Re: HunterMattW2] #8039625 11/05/20 09:28 PM
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I was unaware that Mansfield was so “big”



Re: A/C Help!!!! [Re: rickym] #8039648 11/05/20 09:42 PM
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Originally Posted by rickym
I was unaware that Mansfield was so “big”


Unfortunately Midlo is the new Mansfield. Mansfield has been swallowed and has over 70k. It's solid from 20, south to Broad, urban sprawl separation is now the dead end of 360 to Midlo.



It's hard to feel sorry for someone with one leg who shoots themself in the foot.
Re: A/C Help!!!! [Re: HunterMattW2] #8039661 11/05/20 09:52 PM
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What is the lifespan of the inside unit? It may not last much longer due to normal wear and tear. Good reason to negotiate a lower price.

Re: A/C Help!!!! [Re: bill oxner] #8039672 11/05/20 09:59 PM
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Originally Posted by bill oxner
I had one in a new house in New Orleans that was simply underpowered. It need to be replaced.



A few things have changed in the last 50 years

Re: A/C Help!!!! [Re: Brother in-law] #8039680 11/05/20 10:02 PM
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Originally Posted by Brother in-law
Originally Posted by bill oxner
I had one in a new house in New Orleans that was simply underpowered. It need to be replaced.



A few things have changed in the last 50 years


The house is still there.


Quail hunting is like walking into, and out of a beautiful painting all day long. Gene Hill


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Re: A/C Help!!!! [Re: HunterMattW2] #8039715 11/05/20 10:35 PM
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Originally Posted by HunterMattW2
Inspection was yesterday, and they found that the air conditioner has an issue. Inside unit is original, 2008, with R-22 freon. Outside unit was replaced in 2018 and has the new R-410 freon.


Just for the sake of general knowledge, the same gas is circulated in the outside (condensing) and inside (evaporating) units. It must be the same so that heat can be carried from inside the house to the outside. As others have stated, one of them might be older and rated for R-22, while the other is newer and rated for R-410a. If the inspector told you two types of gas are being used in the same system, then you know something about his knowledge of air conditioning systems.

Last edited by Texas Dan; 11/05/20 10:44 PM.

Dan

Re: A/C Help!!!! [Re: HunterMattW2] #8039743 11/05/20 10:58 PM
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It’s just mismatched equipment Dan


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Originally Posted by machinist
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