Question about Weather King 12AJA4801AH Air Conditioner

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Can a Carrier 38CKB030300 be replaced with a Trane XE1000 if both are 2½ tons? 'The Carrier unit is older and I'm not sure how much life is left on it. The Trane is newer and claims to be energy efficient.

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Be careful that both units use the same refrigerant. If not using the same refrigerant, you would be wise to change the lines going to the coil and would have to change the coil.

Posted on Jul 04, 2010

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The tons is the power of the unit, so sure. if you were happy with the power of your old unit, get the same. if you felt it was never strong enough to cool your house, get the next size up. newer units have the same power, but use less energy.

Posted on Jun 15, 2009

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Brand New 2 weeks old 4 ton Trane compressor leaks a lot of water onto pad


If the unit is running in cold weather than there is ice building up on the coils located outside. This is normal in that the unit is running in heat pump mode heating inside and cooling outside, After the unit detects the ice build up it briefly reverses the cycle heating the outside coils melting(defrosting) the ice which you observe as water on the pad.

The video gives you an example of the defrost cycle!
2012 Trane XL15i Heat Pump Defrost Cycle Steam Show

Dec 21, 2015 | Heating & Cooling

1 Answer

I am trying to get some information on Intertherm unit on the inside of a Manufactured Home, With the new Hud requirements they are saying the out door unit must be installed by the manufactures...


Hi, since you live in a Manufactured home and not a R.V., I see no reason why you cannot go with what ever type of condensing unit you want to install on a slab outdoors. The installation instructions for the Intertherm unit for installing the outdoor unit should apply to any brand unit you want to use as long as the size of the indoor coil is the same capacity of the outdoor unit. For example, if the indoor unit is a 2 ton, 2.5 ton, 3 ton and so on, the outdoor unit would have to be the same is all. Same freon type, most are R-22, but they are using the new R-410a freon, so make sure of the freon type of the indoor coil is and get a unit of the same size and freon type. The installation instructions for the Intertherm should almost be the exact way to install any other condenser. Look for things like the distance from the outside wall, if it needs to be anchored, how far away the electrical disconnect box has to be from the unit, example 4' to 6'. Things like this you need to look for in the installation instructions is all. The new condenser unit holds enough freon for up to 25' of copper line set also. Try to stay with in that range to the indoor unit. If not, no big deal, they may need to add or remove a little freon is all. I hope this has been helpful to you on this. Trane, Carrier, Rheem, Ruud, Bryant, are all top of the line, better made then Tntertherm in my opinion. They should all be hud approved, I don't know where you are from, but here in Ca, they are.
I wish you the best, and please don't forget to rate me. I know you will be kind.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor.

Aug 06, 2010 | Intertherm Heating & Cooling

1 Answer

Can I mix brands/tons when installing AC unit to existing coils?


First off - the 'rule of thumb' is 600' per ton of Air Conditioning. In other words your old unit is a 2 ton unit. So - 2 tons x 600' = 1200'. As you can see if you install the 2.5 ton unit - you will be installing a AC that 'could' cool a 1500 sq ft house (2.5 x 600' =1500 sq ft.). Slightly more than what you need; and the 3.5 ton unit is 'way to big,' (3.5 x 600' = 2100 sq ft.).

Note: fyi - many in the AC business will sometimes refer to tonnage in btu's, i.e. 1 ton = 12000 btu - hence a '2 ton unit' can also be referred to as a 24000 btu unit and vice versa.

So... from the above - you can easily see that "2 tons" of Air conditioning is what is required to cool the 'average' home of 1100 sq ft. "roughly speaking."

Note: it is always best to have a professional 'size' your cooling/heating needs.

One of your questions was could you 'mix tonnage?'

The answer is 'usually you don't mix the tonnage of your outside/inside units.' However, professionals sometimes do (mix the tonnage) in certain situations, and installing a 2.5 ton outside unit with an existing 2 ton inside unit is often done, however, there are some 'tech issues' here and - I would "again" recommend that you call a Service Tech to help you with the sizing/mixing of your cooling/heating needs.

hope this has helped

Jun 20, 2010 | Carrier 38CKC036 Air Conditioner

2 Answers

How much should I expect to pay to replace the outside unit with a similar unit? The refrigerate is leaking out from a crack in the weld joint.


Is the joint where the crack is copper to copper or copper to aluminum? With this being a Carrier, it could be either. If copper to copper, it can be re-welded (repaired) with no problem. If copper to aluminum, there is an epoxy on the market that will repair it if it's not to big. If it's to large of a leak, you will indeed have to replace it. A word of advice. I you do replace it, don't let the contractor sale you another aluminum coil unit.
I'm not sure where you are located so this price may be more or less. Although it should be in the ball park.
It looks like what you have is a 5 ton unit by the model number but I'm not sure if it's a heat pump or not. Plus I'm not sure how old it is so I'll give you a price based on these facts.
Your unit
  1. being a 5 ton unit
  2. an older unit with R22 Freon
  3. Being straight air (Not a Heat Pump)
If your contractor will replace the unit with one with R22. (No more made after 01/01/2010.) I would charge around $2800. If the contractor can't find or will not look for a R22 replacement they will have to replace not only the outside unit but also the inside coil. For this I would charge around $3800. To replace the complete system with a 13 SEER ( R410A unit) I would charge around $5200. The difference in prices I gave is if you wanted a YORK or a Goodman. A Goodman will be around $1000 less than a YORK. The most expensive brand on the market is a TRANE. I'm a YORK dealer and to be honest with you, a Goodman is just as good and does the same thing as any of the other brands. They also offer from a 13 SEER to a 16 SEER. YORK offers up to an 18 SEER as well as TRANE. If your unit is not more than 8 years old, I would only replace the outside unit myself but I assure you that the salesman will advise you to replace the whole unit. This is what they get paid for and that's were the company stands to make the largest profit. There are companies in my area that will tell customers that coils can't be repaired. That once they leak, they have to be replaced or at least the coil.
Just be smart and do not let the service company sale you something you do not need.Good luck. Sorry to be so lengthy. I'm just trying to give you as much information as I can and I hope it helps you make a wise decision, not a costly one.

Oct 16, 2009 | Carrier 38CKC060 Air Conditioner

1 Answer

3 ton condensor and 2.5 air handler


I hate to use rules of thumb but 500sqft per ton depending on your windows and insulation. you are probably ok with a 2.5 ton however it will not work with a 3 ton outdoor unit as you have figured out. depending on how long that ac has been in you may want to replace it with a 2.5 ton due to the damage to the compressor valves because of the mis match. or if the indoor is newer and the original system may have been a 3 ton then i would replace the A/H. and be prepared to replace the outdoor if the valves are to far gone. If the trane is a new high effiency 2 and the goodman is just a 10 SEER you may be able to have a txv installed on the trane unit and a kickstart device outside. but only if its a high effiency but their again if the A/C fails you couldnt have a high effiency 3 ton you would have to drop down to 2.5,

Sep 22, 2009 | Heating & Cooling

2 Answers

A/C coolant requirements, replacing both units


That is true, what the company told you, due to the gov't upping the minimum S.E.E.R rating (Seasonal Energy Efficiency Ratio) it is heavily recommended by everyone in this field to replace both. It is a lot of money in this economy to do this but your energy savings in time will pay for it, I'm a Carrier kind of guy personally and with the new tax credits the government is giving for energy saving the Carrier Infinity which is the Cadillac of A/C units, is very cheap. Plus from experience it has saved my customers up to 65% on their electric bills

May 14, 2009 | Heating & Cooling

1 Answer

What is my tonage?


2 1/2 tons or 30,000 btu's

Apr 10, 2009 | Heating & Cooling

1 Answer

Need help selling a Carrier 4-ton 10SEER unit!


Yes you can sell this unit. You would have better luck posting on ebay or craigslist.

Aug 06, 2008 | Carrier 38CKC048 Air Conditioner

7 Answers

Carrier evaporator coil


I recently contacted Carrier Corp after our routine annual HVAC check on our residential system indicated that our 4 ton AC unit and 3 ton unit had leaking evaporator coils.
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They basically told me to shove it in a very curt letter - In other words even though a leaking evaporator coil is a manufacturing defect they will not offer any financial assistance in replacing the failed evaporator coils.
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I spoke to several HVAC engineers and they indicated Carrier has a high percentage of evaporator coils and compressor failures on residental HVAC systems.
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The copper wall of the evaporator coil is being drawn thinner than in earlier years and the R22 being acidic slowly eats through the copper tubing.
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Evaporator coils should not fail according to the HVAC Engineers if properly manufactured.

The Bear

May 19, 2008 | Heating & Cooling

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