Air Conditioning 101

Is Sizing of your A/C unit important? Yes.
Professional engineering guides state:
About 400 to 500 cube ft. per ton of A/C.
Depending On:
Average 8 to 10 ft. ceiling height. With average window openings. R-19 attic insulation or better.
1 ton = 12,000 B.T.U.
2 ton = 24,000 B.T.U
2.5 tons = 30,000 B.T.U.
3 tons = 36,000 B.T.U
3.5 tons = 42,000 B.T.U.
4 tons = 48,000 B.T.U.
5 tons = 60,000 B.T.U.

B.T.U = British Thermal Unit. The amount of heat required to raise one pound of water one degree.
Ton = The amount of heat required to melt one ton of ice in a 24 hr. period.
Note: Only a ASHRE approved heat load calculation can determine the exact heat load of your structure.


Does A/C SEER Rating Matter ? Yes !

SEER = seasonal energy efficiency ratio.
Kilowatt consumption to BTU capacity.
For every SEER point higher you can save approimately 7.2% on your annual cooling cost. Depending on the SEER of your old A/C equipment verses the new A/C equipment SEER.

Old A/C syst.
10 SEER verses
12 SEER verses
New A/C syst.
16 SEER = a savings of 43.2% annually.
16 SEER = a savings of 28.8% annually.

Start saving money now on your annual cooling cost !


Filters are rated in arrestance factors. That is how well they catch dust / dirt.A cheap fiberglass one 1″ thick will catch, maybe 50% of the dirt / dust. Not good.You know, the kind you can almost read a news paper thru. A good 1″ filter will catch 87% to 89% of all the dust / dirt. This requires non-fiberglass. But a pleated fibra media or a polyester media filter. The less dust / dirt. The less you need your coil cleaned. Major coil cleanings are not cheap. So why use a cheap filter. Not to mention the air quality in your house / office your breathing. Always use a MERV8 rated filter.
MERV = Minimum Efficiency Reporting Value
This measurement scale was developed in 1987 by ASHRAE.American Society of Heating, Refrigeration and Air Conditioning Engineers.Check the Air Quality Page of this site.

FPL REBATES : The Biggest One !!

FPL pays by B.T.U. capacity not Tonage. Because some High SEER A/C units are not the full capacity in Tons as they claim to be. To determine if your new system is sized properly, be BTU wise. It’s like ice cream or a bag of chips.
The bag or carton’s the same. But you have less in it as before. You know what I’m saying.. Right..
Always check what BTU capacity your buying in a A/C !
And refer to the BTU = Tonage chart above..
BTU Heat Load calulation to determine exact BTU requirement.

Now you know more than the average Joe ! COOL!!
Contact me if you have any specific questions. More info soon.