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A/C Repairman?
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Duck_Garcia
Mueller Community

Posts: 95
Joined on March 19th, 2008
A/C Repairman?
by Duck_Garcia on August 24th, 2010

Oops, sry for the double post. system froze & I was a little impatient!
 
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Duck_Garcia
Mueller Community

Posts: 95
Joined on March 19th, 2008
A/C Repairman?
by Duck_Garcia on August 24th, 2010

 
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jen-eric
Mueller Community

Posts: 59
Joined on December 6th, 2008
A/C Repairman for unit running too cold?
by jen-eric on August 30th, 2010

I noticed that a couple of people have posted with the same problem that we have been having the last three weeks...our upstairs AC in our Meritage home has been freezing us out, especially at night. It gets down to 70 up there even though the thermastat is set at 76 overnight. I noticed that several of you posted that you got it repaired or looked at. Did anyone have an explantion about why this would happen? It frustrates me that we've only owned the house less than two years and this seems to be a trend, I guess I didn't expect a major repair so soon after warrenty.

Any insights to share or recommendations that you learned from the service people you called? We need to call someone and I'm just checking to see if one was able to address the issue. Thanks.
 
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langhugh
Mueller Community

Posts: 1149
Joined on August 18th, 2007
A/C Repairman for unit running too cold?
by langhugh on August 30th, 2010

Just read Glen Davis' explanation below and reverse the heat for AC. It is probably your electronically-controlled, mechanical damper that is mechanically failing (not closing for your upper floor when only your lower floor is "demanding" conditioned air).

From Glen Davis..

Quote:

In addition to some of the other posts/suggestions of causative reasons for the malfunction, I have also found several homes where floors not intended to be running were producing either partial or almost full volume of conditioned air ( be it heat or AC ) as was demanded by the Tstat from another floor.

As indicated in one of my earlier posts, there can also be issues with inline dampers, zone control board, motorized dampers etc. that are not fully shutting off the zoned floor you have requested to be in the OFF position.

Example : First floor operating in heat mode = Tstat is on Heat setting and heat is produced around 105-115 degrees. Second floor Tstat is in OFF postiion but still producing heat ranging from room temperature all the way to 115 degrees.
This is a fairly easy test for a qualified/knowledgeable HVAC tech to perform and diagnose.

PS. this scenario is not news to many of the HVAC subs and builders out there. More common than you think.

Glen Davis
Inspector


 
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Ashley
Mueller Community

Posts: 242
Joined on September 16th, 2007
A/C Repairman for unit running too cold?
by Ashley on August 31st, 2010

We had the same problem (in a Meritage), it was a failed damper. We used CASA Mechanical - they are the ones who installed our AC (in phase I at least). We tried a small local AC guy first, but he said our systems were more high tech than he was used to and he might not be the right guy for the job, so that is when we called CASA.

With CASA, the part was under warranty, but we did still have to pay for the labor. Still kinda sucks to have to pay for something that shouldn't have broken, but I guess that is life. (and alot cheaper than living in our previous old house with LOTS of repairs).

When you call them- tell them you know the problem and it is the damper, that will make sure they bring the right part on the first visit. If not, they might send someone out to diagnose the problem, then someone out another day to fix it, and it is a pain to have to get off work twice for a repair.

Ashley
 
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tj1407
Mueller Community

Posts: 178
Joined on December 3rd, 2007
A/C Repairman for unit running too cold?
by tj1407 on August 31st, 2010

Fox came out yesterday to look at my HVAC. We've been having the issue of the upstairs being cold. He said he couldn't find anything wrong. Specifically, checked the calibration on our thermostats and also said both of our dampers were working fine. Which is frustrating, because I know there is something wrong! Anyways, just wanted to give the update. I may play with our system a little more to see if I can recognize more of a pattern before I askl Fox or someone else to come out again.

Torie
 
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danx111
Mueller Community

Posts: 1151
Joined on November 25th, 2008
A/C Repairman for unit running too cold?
by danx111 on August 31st, 2010

Quote:
I noticed that a couple of people have posted with the same problem that we have been having the last three weeks...our upstairs AC in our Meritage home has been freezing us out, especially at night. It gets down to 70 up there even though the thermastat is set at 76 overnight. I noticed that several of you posted that you got it repaired or looked at. Did anyone have an explantion about why this would happen? It frustrates me that we've only owned the house less than two years and this seems to be a trend, I guess I didn't expect a major repair so soon after warrenty.

Any insights to share or recommendations that you learned from the service people you called? We need to call someone and I'm just checking to see if one was able to address the issue. Thanks.


CASA repaired our 18 month old A/C under warranty - no charge for parts or labor. Meritage built home.
 
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Sherri Kempf
Mueller Community

Posts: 12
Joined on May 8th, 2010
A/C Repairman for unit running too cold?
by Sherri Kempf on August 31st, 2010

R&M Mechanical came out Thursday and found that our damper was malfunctioning. Bill, the technician,had to cut open the duct to get to the damper as there was no door or opening to get to it. He made some adjustments so the damper could move through it's full range, and the HVAC to both floors has been working excellent (even better than before). The technician told us if it starts to act up again, the damper will need to be replaced. So far so good. Since our house is outside of the one-year workmanship warranty (originaly with Casa Mechanical), we needed to pay for 2 hours of labor (@ $70/hr). Per my earlier post, I highly recommend R&M Mechanical (Ph-512-928-2470). We lived in many homes in many cities, and this is the best service I've ever experienced.

Also, the technician gave us a copy of the Honeywell Installers Manual. This is not the operating manual, but the INSTALLERS manual. You can go online and print this off of Honeywell's website. It tells you how to check your thermostat(s) programming. There are about 100 codes to check, but you can see how your thermostat is set to control humidity levels (or not). This is something you can do yourself before calling an HVAC technician to ensure your thermostats are set properly. Since we have 2 thermostats driving one HVAC system, the thermostats are set so one (the upstairs) is the master, and the other (downstairs) is the slave. As a result, most of the codes are programmed into the upstairs thermostat. Hope this helps! Sherri
 
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Erin
Mueller Community

Posts: 20
Joined on January 6th, 2009
A/C Repairman for unit running too cold?
by Erin on August 31st, 2010

Thanks Sherri and everyone for the tips. We've been having the same problem for about 3 weeks now, also with a Meritage home. Were these things on a timer or something, all set to self destruct after our warranties expired?!
 
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henningspruth
Mueller Community

Posts: 488
Joined on October 20th, 2007
A/C Repairman for unit running too cold?
by henningspruth on August 31st, 2010

A faulty damper was one of the issues found during the home inspection I had done before the warranty ran out - so no, there is no timer ;-).
 
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