new air conditioner send VERY COLD air in one room and installer says
deborah schenk
7 years ago
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Austin Air Companie
7 years agolast modified: 7 years agoRelated Discussions
Return air on new air conditioner/furnace
Comments (9)I found this note on page 11 of the installation manual under upflow units: NOTE: Where the maximum airflow is 1800 CFM or more, both sides or the bottom must be used for return air. This is saying the bottom return by itself will be enough. There was note under the upflow unit section, but I assume it also applies to a horizontal installation. You want the filter and grill cover to be at least the size of the opening to the furnace. Making the grille bigger is not going to help if return itself is smaller. I don't know how this is going to work with the filter size you quoted. I would think you would need two 14X24 filters. It would be nice if you get get a 4 inch filter instead of the 1 inch. Otherwise you will be changing the filter every month. The 6x6 stud obstruction should be removed and you want a tightly sealed return duct. The return duct should not have a right angle. It should be a curved elbow to make the 90 degree transition. Sharp angles create more air resistance. How big was the original house and AC, and much area are you adding? Most houses don't have the properly sized duct work to handle a 5 ton AC. Do you have confidence in this HVAC contractor?...See MoreNew Air Conditioner not cooling house
Comments (5)Hi, This won't help you, but we have been struggling with the cooling of our 3 year old home since the beginning. The second story is very warm and the master bedroom and living areas on the main floor are just comfortable. I don't really want to run A/C anymore due to electric costs. This week it froze up and my husband has been letting it thaw out, not good when it is over 80 in the daytime. The original installer says we shouldn't need to run the air at night and that the cooler night air (sixty degrees) is causing the freeze up and he can install something to take care of that, but it is usually used for comercial units. Two people in the house have allergies and need the air at night and we have never had any issue in the other homes we have lived in. I have tired closing a few of the floor vents on the main floor and in the basement in order to channel more air to the second story, but it does not do much. We do have a large window in our family room and that is definitely part of the issue with the heat in the house. Good luck....See MoreHigh humidity w/new Trane XL16i air conditioner (heatpump)
Comments (16)Thanks Tigerdunes for the info. I am going to meet with my HVAC installer on Thursday to talk about how best to decrease the airflow while the compressor is on to allow sufficient water to be condensed from interior air -- with goal to keep my internal humidity below 60% (or more). Re your comments 1-4: 1. No crawlspace, house is 9 ft elevated on stilts. I do have a vapor barrier on bottom of R-38 batting in floor. 2. I never run fan in "ON" mode, however, it runs a whole lot on slow speed without compressor running in "Auto" and/or "Cool" mode -- which I think may increase the humidity like "ON" mode as noted by contributors in this forum thread. However I must solve the more major problem of not removing sufficient humidity when the compressor IS running on, first. Then address this if high humidity is still an issue. 3. I agree that attemping to re-program dipswitch settings, even with the manual, is foolhardy for a person not trained in HVAC and Trane eqpt. in particular. 4. Will attempt to get air handler air speed to be more correctly matched to dehumidification needs. Especially in light of your and ryanhughs comments: "First, that air handler will come factory set for an airflow suitable for 3.5 tons, so it should be adjusted for both the high and low stages of your 3 ton unit (4TWX6036 is a 3 ton). Second, is Comfort-R enabled?" Thanks again to all for your continuing assistance. I will post how this does (hopefully!) get resolved. KR...See Morecold air return...room to room ok?
Comments (3)For the life of me, I don't understand why jumper grills got so popular. While I know why they are there, no heating person here in TX can explain that if the furnace is in the attic and the central return is in a common area, the filter is on the furnace, then why cut and install another box in the common area versus just run the duct back to return plenum at the filter? I think it was left over from central filter return grilles in the common area that was the only means of filtration but never readjusted their install techniques. I was somewhat pleased in my new home after running the bedroom returns to the plenum; (which worked better and balanced system out). I used two of the three in the common area for a ducted central dehumidifier and the 3rd for an additional ceiling return to complement my existing low wall return....See Morefreeoscar
7 years agotigerdunes
7 years agomike_home
7 years agoVith
7 years agolast modified: 7 years agodeborah schenk
7 years agodeborah schenk
7 years agodeborah schenk
7 years agodeborah schenk
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7 years agodeborah schenk
7 years agodeborah schenk
7 years agodeborah schenk
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7 years agodeborah schenk
7 years agoAustin Air Companie
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7 years agodeborah schenk
7 years agoAustin Air Companie
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7 years agoklem1
7 years agoAustin Air Companie
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7 years agoHigh Performance HVAC Heating and Cooling
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