Original message
| jean55
 |  "Will TXV valve compensate for mismatched coil"
, posted Mon 18 Aug 09:47  
The home warranty company (HMS)will charge us $280 (for disposal of old parts, reclaim refrig & a new pad) and will cover parts and installation of a 14-SEER Goodman condenser unit, a TXV valve and a new filter dryer. They claim that the TXV valve will take care of any mismatch between the new condenser and our 14 year-old Lennox evaporator coil.
Our problem with the current system was that it does not adequately remove moisture. (It is the proper tonnage.) Will what HMS recommnends work? Alternatively, they will give us a $1000 credit toward a new system which would run us around $3,500 before the credit.
Thanks.
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Replies:
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| tony0508
| "Re(1):Will TXV valve compensate for mismatche" , posted Thu 21 Aug 17:11
TXV can compensate however everything have limit if mismatch
5 to 10% it should not be a problem. however I would suggest to you to get some one eles look up you problem because to me it does not sound right.
cas-environ.com
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| Jojo98
| "Re(1):Will TXV valve compensate for mismatche" , posted Tue 19 Aug 22:26
Seldom have I seen a properly sized A/C not be able to dehumidify a living space. Call a professional, and if you need a unit replaced, purchase a new outdoor and indoor unit. Why bother with the headache of mismatching components, and wondering if it will work, which you are doing already.
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| | jean55
| "Re(2):Will TXV valve compensate for mismatche" , posted Tue 19 Aug 23:36
Thanks. If we can pull together the money, we'll replace the whole system. I know you guys all think you're professionals, but when we're at the other end, it's not so easy to find a professional.
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| amech
| "Re(1):Will TXV valve compensate for mismatche" , posted Mon 18 Aug 19:17
The problem with home warranty companies (jack of trades)is that they want to replace parts and not fix the problem. I know you already have money invested in your warranty but I would spend the 80-100 dollars and have a true HVAC service tech diagnose your unit.
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| | jean55
| "Re(2):Will TXV valve compensate for mismatche" , posted Tue 19 Aug 23:27
The home warranty company sent out what I thought was a true HVAC contractor who took the measurements/readings, for which we paid a $100 deductible. Those measurements were then interpreted by the HMS technicians who determined what corrective action is necessary.
How do you know who's a "true HVAC service tech" and who's a fake? (That's a problem with ANY contractor--roofing, siding, plumbing, home inspectors, you name it...)
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| theduke03
| "Re(1):Will TXV valve compensate for mismatche" , posted Mon 18 Aug 16:35:
I don't see how replacing your condensing unit will result in more "moisture removal". If the current system is running properly then a new unit will remove the same amount of moisture. Your evaporator coil probably already has a txv. I would rather have a 14 year old lennox system than a new Goodman.
"My dad was the most feared furnace fighter in Northern Indiana."
[this message was edited by theduke03 on Mon 18 Aug 16:37] |
| | Houston204
| "Re(2):Will TXV valve compensate for mismatche" , posted Wed 20 Aug 01:41:
I want to start out by stating that I think these techs are giving sound advice.
But $280 for a new 14 seer unit is a great deal. 15 years is an average lifespan of a condenser. I'd take that deal.
$2280 is a little high for the matching Goodman coil. You may be able to get that cheaper from someone else. You will not get the rated SEER without the matching coil though.
I don't like the fact that Goodman recommends oversized evaporator coils to get the seer rating. This wouldn't help with humidity removal. Give me a 4 ton coil for a 4 ton condenser, not a 5 ton coil.
After I got the $280 condenser I'd fix the return air leak that is probably the problem ;)
"Tip of the Day" Remember to remove power first.
[this message was edited by Houston204 on Wed 20 Aug 01:45] |
| | jean55
| "Re(3):Will TXV valve compensate for mismatche" , posted Wed 27 Aug 08:27
Thanks for the advice. When I spoke of a mismatch, it's that the old coil would be left in place with the new, Goodman condenser. So the SEER ratings would be different but I don't know if the size of the coils would be different.
I wonder why no one else ever mentioned a return air leak as a cause of the high humidity. Maybe it's harder to fix?
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