4 ton HVAC Unit for 2000 SQ FT Residential Bldg (Single Story)
Hello, my existing system for the existing 1500 sq ft residential bldg is not giving me enough heat or cold. I am thinking to replace this. With new 500 sq ft addition, Will a 4 ton system work for my home? How much would it cost. I want to install a higher tonnage for the existing 1500 sq ft, so that it also will work for the proposed 2000 sq ft with new add.
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There are so many variables that you should seek professional advice. The number of windows, insulation value and a number of other variables will all play into what size of cooler you are going to need.
Determining the total tonnage to cool any building depends on the heat loss calculations. Points to include is the R rating of the insulation, the square footage of the windows and doors, How hot does it get in the summer? Also the materials the building is made of. ie. Steel. concrete, wood exterior walls.
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.
their is a chart that homedepot use to give in a/c dept may still be their but a 6" run is about 100 cfm this will cover 10x10 1 sq inch is 1 cfm 1 ton is 400 cfm a gas system is 400 per ton and a heat pump is more like 425 but is best to figure the 400 cfm for both say you got 12x10 room that is 120 sq ft so you need around 120 cfm and if the 6" duct is 100% hard pipe with no flex you can get that if you balance your air if more help is needed email firstname.lastname@example.org please give me a vote and rating
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.