Originally Posted By: cbottger This post was automatically imported from our archived forum.
Some contractors use 400 some use 500 square feet of living space per ton of cooling such as 1500 sq ft home uses a 3 ton unit. The proper way would be to run a heat load on the home such as amount of insulation walls and attic, type of windows, doors ect. ect. ect. The average daily high temperature for the summer summer months for your particular area is also very important and the amount of humidity on a average.
– Don’t argue with an idiot someone watching may not be able to tell the difference.
Originally Posted By: phinsperger This post was automatically imported from our archived forum.
The simple answer is
Required BTU’s = Total heat loss - Total heat gain
then you have to determine each. By such things as glazed area, insulation, number of anticpated occupants, location, etc, etc. I can go a bit more in detail if you like but sufice it to say there are a number of factors and assumtions that equate in to it. There is software that will calculate it for you. All you have to do is plug in a few numbers.
Originally Posted By: jbehling This post was automatically imported from our archived forum.
cbottger wrote:
Some contractors use 400 some use 500 square feet of living space per ton of cooling such as 1500 sq ft home uses a 3 ton unit. The proper way would be to run a heat load on the home such as amount of insulation walls and attic, type of windows, doors ect. ect. ect. The average daily high temperature for the summer summer months for your particular area is also very important and the amount of humidity on a average.
As stated, a heat loss calculation has to be performed for a proper answer. Most contractors over size heating and cooling units, wasting energy and money.