CH&A experts, is there a certain size unit recommended for larger homes? Please read on?

Question

I just moved. I was living in a small 2 bedroom home, that stayed very cool when using the CH&A. The house I live in now is 3 bedroom, 2 full bath, with large living room & large kitchen. I noticed that it gets awfully hot in here. The CH&A unit is about 1/2 the size of the one that was at my smaller house. I can't convince the landlord that something is wrong. I'll have it set on 66 & it will be 80 degrees in here. The other day, it was 95 in here! He came & looked @ it when it was early in the morning & wasn't so hot. He had professionals come out here 3 times. The last time, they told us it needed replaced. But then he came & said it didn't. If there is a certain size or "specification" CH&A unit that is recommended for this size of a home, please tell me what it is & where on the unit I could look to find out what size the one that is here now is. I'd like to give him a professional's opinion. Thank you!

Answer 1

for your Central Heat & Air normally you need a heat/ cool analysis to figure out your heat/cool, loss/gain ...when sizing a unit more goes into figuring what tonnage unit you need than sq footage ...but generally one ton for every 550 sq ft on poorly insulated homes to one ton for every 750 sq ft for a very well insulated home with quality windows and doors... 750 sq ft per ton is the maximum size per ton if you want your unit to work at all when it gets very hot or very cold...

Answer 2

There should be a plate on the unit that gives it's rating in "BTU.s /Hr.", both heating and cooling.
The size of the unit needed depends a lot on how well the house is insulated, color of the exterior, number & size of windows & doors etc., even which way the house is oriented to the sun.
Others have given you "rule of thumb figures.
Sorry not to be of more aid.

Answer 3

Cooling capacity should be 1 ton (1200Btu) per 800 sq. ft.

I'm not familiar with the term CH&A, can you elaborate?

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