4 Ton Furnace Cfm

200 cfm per return grill single.

4 ton furnace cfm.

Bryant gas furnaces whatever chill is in the air stay cozy with a bryant gas furnace. If you have a furnace that is at least 10 years old it probably has an afue somewhere between 60 and 70 meaning up to 40 cents of every dollar you pay for fuel is wasted. For this example using an 80 efficient furnace the 1900 square foot home above would require a 90 000 btu input furnace that produces 72 000 btu s of heating which is close enough to the 76 000 btu s required using the climate heating factor. From our top of the line evolution system furnaces through the solidly built legacy line of bryant furnaces you can find the blend of dependable heating performance quiet operation and exceptional comfort and energy savings that is right for your home.

By operating my system in the cooling mode at 700 cfm with a variable speed blower motor along with the use of a properly metered but otherwise oversized indoor coil rated at 4 ton nominal for 13 seer ratings my system reduces moisture in my home very well when in the cooling mode. As far as your return is concerned i will have to check my duct calic. But i think it will be 8 x 28 and of coarse that is if it is to be one long run as described in the supply. Trane 95 and 90 gas furnaces deliver at least 90 efficiency far exceeding the government minimum standard of 80 afue for new furnaces.

Some products like furnaces may also be affected by installation orientation horizontal upflow or downflow or even by the nozzle used in installation as is the case with boilers and oil furnaces. If two return ducts then they will be smaller. You want 1 cfm per square foot so the above room s requirement would be 100 cfm. And let you know.

Induced draft furnaces require 130 cfm per 10 000 btu input and natural draft furnaces require 100 cfm per 10 000 btu input. In the example you would divide 35 000 by 12 000 and get 2 92. Airflow is measured in cfm or cubic feet per minute. Back to our original point in order to completely diagnose the performance of an hvac system airflow not only over the coil but through the registers and grilles must be known.

This home would require a furnace that has a tonnage of approximately 3. Overall efficiency p efficiency within a model group will tend to vary by the size capacity of the unit. Multiply these together to get the square footage of the room i e if the room is 10 ft x 10 ft the square footage would be 100.