75000 Btu Furnace Cfm

The actual production of heat called the output btu will be the main factor in deciding which heating unit is right for your.

75000 btu furnace cfm.

90 000 btu input x 93 efficiency 83 700 btu actual output. 40000 btu 75000 btu gas furnaces direct with free shipping on all orders over 500. You would take 95 of the 60 000 btuh input and divide by 60 x s 1 08 which would equate to 880 cfm. Buy a new 60 000 btu furnace at wholesale pricing plus free shipping.

The btu refers to the heat output the furnace creates. Multi firing technology in gas and oil burner. You ll want to look at a unit s btu as well as its efficiency. On the name plate there will be a minimum and maximum heat rise that you need to be in between for proper furnace operation.

Lets say you had a 60 000 btuh furnace rated at 95 efficiency and the data plate on the furnace calls for a temperature rise of between 50 and 70 degrees. This is a straightforward no frills method that is so easily to follow it can be committed to memory in less than a minute. A furnace with 100 000 btu and an efficiency of 90 delivers 90 000 btus of heat to a home the remaining 10 is what is lost through the flue. Classic design countered with new technology make the new cmf2 today s choice for a multi application fossil fuel heating appliance.

Cfm btuh output delta t x s 1 08 at sea level. Let s take a look at the required steps in a field situation. The best way would be to look at the manufacturers data. 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.

Induced draft furnaces 130 cfm per 10 000 btu of rated btu input condensing furnaces 150 cfm per 10 000 btu of rated btu input. Example check the nameplate. Factory setting is 75 000 input btu and output is 60 000 btu. Delta t shown as a triangle and t in our example temperature difference.

For example a furnace with an input btu can have an efficiency of 80. That means the furnace will produce 80 000 btu of heat. The average furnace has a btu rating of 80 000 to 100 000 btus. Cfm cubic feet per minute btu output the net output of a combustion system not the input which is the number that is commonly used to identify the capacity of a furnace from a general perspective.

1 08 sensible heat equation constant. If that same furnace has an efficiency of 95 the furnace will produce 95 000 btu of heat.