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BTU Calculator

Posted by Mongo on October 15th, 2001 02:22 AM
In reply to HVAC and Formula's?? by Arnie on October 14th, 2001 02:35 PM [Go to top of thread]

0 of 1 people found this post helpful

This one used to be free:

It may still be. You do have to register, so go ahead and give it a shot.

There's a better one, but it's $39 and it doesn't eem like you have time to get involved with that one.

They should have run Manual J numbers to get your loads. Ask to see the worksheets. It's important that your units be properly sized, because as Jack wrote, both undersized and oversized systems can cause problems down the road. To run the proper calcs they'd have to know quite a bit about the construction of your house, so if they didn't as a bunch of questions and measure the square footage of youw windows/rooms/walls, etc, it's likely the calcs were not run.

For your AC, for your conversion, every 12000 BTU's of cooling equates to one ton of air conditioning required.

Also, get a good SEER rating...I recommend a 14 SEER, and if you can afford it, go Puron, which is the "next generation" coolant.

From Energy Star, for a 14 SEER unit you can get a rebate of around $90 per ton of cooling. If you do get that 3-ton unit that could be a $270-ish kickback.

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