Need to know the tonnage of a central air conditioner for a 1456 sq.floor ft. home with 9' ceilings and six insolated standard size windows, and two double pane 6' bay windows, and two standard doors with storm doors. Ceiling insolation of R30, walls none.

It can handle five tons, or a 60000 btu ac. Tonnage is a measurment for the ac, 1 ton-12000 btus. The ac dose the cooling. the furnace simply blows the air, so if its a good furnace, and sized right, no need to replace it. Simply add the split system to the existing furnace. If you want the tonnage of the ac size, let me know your homes squarefootage, age, condition. Do NOT include the basement in the sq. ft.

Read size of air conditioner you need , each ton of air conditioning will keep cool 400 square.so higher ton yo pick you feel cool.please read below square feet to ton chart.
1 ton on 400 sq. ft.
2 ton on 800 sq. ft.
3 ton on 2000 sq. ft.
5 ton on 2570 sq. ft.

There are a few variables that determine the size needed to cool your home - the size of your home, type insulation, are just two. I have a 2600 sq ft home - about 1300 sq ft per floor. I choose to cool the entire second floor (bedrooms and baths) and two of the largest rooms on the first floor (kitchen & living room) via flexible ducts from an air handler installed in my attic. My house was built in 1960, and at the time had electric heat. This means it is fully insulated. I replaced all the windows with energy efficient types, and vinyl sided. I installed soffit, ridge and gable vents to keep my attic well ventilated. I can cool my house in Boston, MA to 70 degrees (when it is 85 degrees inside) with a 4 ton unit in a little over an hour with no problem (one ton of cooling is equal to about 12,000 BTUs). Your condenser should not run non-stop. If it is not cooling then it is not a thermostat problem, but could be a gas charge problem. If you haven't paid the contractor in full yet - that may be the reason why. The contractor should know how much cooling you need for the space you have and installed a properly sized unit. Make sure your air filters on the return are clean and replaced regularly. Call the contractor and explain the problem - he should be able to solve it for you very quickly.

depending who you talk to a ton will cover about 500 sq ft (as some say 400 sq ft others say 600 sq ft). I believe your unit is a 3 1/2 ton unit. Below is a chart
0sf-750 sf= 1.5 ton
751-1000sf= 2.0 ton
100sf1-1250sf=2.5 ton
1251sf-1500sf=3.0 ton
1501sf-1750sf=3.5 ton
1751sf-2000sf=4.0 ton
2001sf-2500sf=5.0 ton
I would say if you have two units then you are covered, remember the area(region) walls, ceiling and other climate factors will play into your tonnage for you house. The best thing is to consult with a honest and reliable a/c installer in your area. i hope this helped Tim

Yes, it is a 2ton unit and no, it's definitely not big enough. You need 1 cfm per square foot. That's 2000 cfm. 1 ton of air is equal to 400cfm. So you would actually need around a 5 ton unit to comfortably do a 2000sq ft building. Insulation, doors, windows, and other sources of heat load all factor in, but this is the standard formula. Hope this helps!

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

The answer that (TheMobilian) left couldn't be further from the truth, of offense. So you're saying if you have a 1000 sq ft house with 4 bedrooms you'd have 4.5 tons of cooling? That's insane, the compressor in that system would be shot in about 6 months from short cycling. Their are many factors in sizing equipment, but none of them involve how many bedrooms you have. If you don't know how to calculate load from windows and insulation factor, then you can use the old (1 ton per 500-550 sq ft) that will get you close.

Hi; Do You want to substitute wattage for tonnage then based on your sq. ft I would say You need a 3 ton. system...alpharome416

One ton of cooling per 500 square feet of space assuming you have good insulation. Yes, 4 tons for 2000 feet would be accurate.

Your unit is sufficient to cool up to 1000 sq ft satisfactorily. You have a 2 ton unit. 500 feet per ton is standard.