Question about Whirlwind FH-778 Air Conditioner

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A/c charging unit is same brand but outside unit is1.5 tons & inside unit is 2.0 tons is this a problem when charging

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No it should not pose a problem, it is permissable, (actually desireable) to have a larger indoor coil than the outdoor unit.

Posted on Jul 31, 2009

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Posted on Jan 02, 2017

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2 Answers

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

Can I buy a new inside unit for a MS24WN outside unit


EPA regulations: Freon 22 units are no longer available, Units that are compatible are available They come pre charged with nitrogen It must be dumped. If there is freon in the old system it should be pumped down into the condenser unit before the inside unit is removed, Close the high side king valve and run the unit until the low pressure reads near O Close the low pressure king valve. and turn unit off. 410A freon units are readily available. Most if not all 2 ton air handlers will work with any outside 2 ton unit though some building codes will not allow a mix. Their reason: if something fails who is to blame:

Dec 02, 2014 | Heating & Cooling

1 Answer

I have a 2.5 ton ac outside. the indoor unit downstairs in the basement is a goodman. a new a coil was put in about a month ago. which is a goodman product. ive heard goodman is not a good product. a


the inside coil and outside unit should be matching in tonages another word if you have 2.5 ton outside the inside sould be the same. it don't matter what brand name or who made it.

Aug 04, 2012 | Goodman CKL36AR36 Air Conditioner

1 Answer

What evap coil can be efficiently used with a 10 seer rheem raka-024jaz condenser


Hello, if the outside condenser is 2 ton than the inside evap coil should be 2 ton aswell. There are 12,000 btu's per ton and the number 024 in the model # represents btu's per ton so you have a 2 ton unit.

Jun 25, 2012 | Heating & Cooling

3 Answers

Not cooling as it should


If you have a crushed, kinked, or otherwise restricted fitting in the system, it's possible the cooling may be affected. Pressure readings can be thrown off, and refrigerant flow can be inhibited.

Since the unit is new, you should have a complete parts and labor warranty, so ask the installer what the reason is that the system doesn't provide the cooling you were probably promised when they sold it to you. They should have taken into account the location of the condensing unit, the size and insulation in your house, indoor and outdoor conditions, your geography/climate, and any other load factors before selling you the system.

Jul 22, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

I have a 2 1/2 ton unit. If the outside temperature is 95 degrees. What should I expect from my unit in cooling my house.


If properly charged your unit should perform fine, having a dirty condensor at that temperature can cause problems not easily recognized.

A well insulated house should be able to maintain a 20 degree temperature difference whether its summer
or winter. No Mechanical cooling or heating involved
for at least 6-8hrs if not more.

If it never cools when it is 95 degrees outside the ambient outside temperature is not the problem.
At 95 degree out side air you should be seeing inside discharge air temperatures betwenn 48-55 degrees.

It is the load in the house that determines how long the unit will run at 95 degress.

Jun 21, 2010 | Goodman CKL24AR24 Air Conditioner

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

We have a brand new 5 ton ac unit the part that goes outside how we got it is a long story but a good one but we need to but the other half that goes in the celing and idea how much this should cost me and...


This is called an "A" coil. You need a 5 ton "A" coil to match your outside unit, give or take 1/2 ton. The cost will vary greatly depending on the make of your unit.

Sep 29, 2009 | Heating & Cooling

2 Answers

Need to add freon


With the air temperature 90 degree's look for low side to be 68.5 psi and the high side to be 250 psi. The air temperature is outside air not inside the house air okay. You want 8 to 12 superheat to be perfect. Now if you are talking about a high efficient unit make low side 75 psi and high side 225. Do you know the SEER rating on this unit?

May 02, 2009 | Heating & Cooling

2 Answers

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.

Oct 14, 2008 | Carrier Heating & Cooling

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