Question about Dometic Rooftop RV Air Conditioner

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Can Air Handler !1/2 ton run with 2 ton

Can Air Handler !1/2 ton run with 2 ton condenser. The condensing unit do not cool my bed room but cool my living room it is a new unit also the condensing unit is very noisy I would like to know what brend is the quite one i have to change it even its a new machineits drive me crazy the noize

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Its done all the time. It is sometimes better to do this because you run a colder coil and rmoves more humidity. The newer unit have variable speed fan and run slower to do the same thing. Remember the lower the humidity the higher you can raise your tsta. Example In arizona at 95 degrees you dont feel the heat as much because of the lower humidity. Its ok to do so. You get more btus out of your unit that way. Rus. I have dozens of units with air handlers 1/2 ton smaller...

Posted on Jul 18, 2009

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If it's is making noise something is not right, did they put isolaters on the condensor? if not get them and install them or call the guy backand let him here the noise sr=e should cover it if he heres adnormal noise in it.

Posted on Jul 19, 2009

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I have a Ruud Model # UACC-036JAS. Any idea on


Hi, yes the number you are showing me 036 indicates its a 3 ton unit. For every ton of cooling, you will have 12,000 btu's of cooling. 36 divided by 12=3 ton unit. Its showing me also its a Ruud Handler 2.0 ton which would be a Model# UACC-024JAS? If your mobel number is the one you gave me, UACC-036JAS, this is a 3 ton unit, absolutely no questions. I hope I have been of help to you. I am a licensed air conditioning / Refrigeration /Heating Contractor. Let me know if I have been of help.
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Carrier air handler tonnage?


That is a fairly large difference. It is usually ok to have the inside evap. coil and blower up to 1 ton larger than the outside condenser. That will make the unit slightly more efficient as well as less likely to freeze up on low airflow situations. It is not recommended to install a new condenser on an old evap coil. There has been a lot of changes to the design of the coils in the last little while. For example a 10 year old 2 ton coil may only have 3 cubic feet of volume but a new 2 ton coil may have 4 cubit feet of volume.

There are many factors that may have infulenced the decision on what size condenser to install. Many of which can only be done by visiting the home and doing alot of work, checking the duct sizing bioth supply and return, inspecting the insulation and windows of the home etc. etc. Most of the time that never gets done. You can blame the contractor for not doing a complete check, but at the same time you can blame the customer because many contractors that are that good loose the job to a cheaper bid that did not no any of the research. It is a catch 22 for everyone involved.

There is ALOT more to sizing equipment that many people think, sadly that also includes many HVAC contractors. Way too many people use "rule of thumbs" or flat out "guess".

Sorry for the rant but your queston can only be answered by a good well educated HVAC contractor visiting your home. That type of a contractor is getting hard to find these days in such a price competetive world.

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