Empire Comfort Systems Heater Sizing Chart     
empire heater sizing chart, room size chart
Model / Room Size Chart / Vented Heaters
Quick Reference based on ceiling height of 8 feet
Square Feet (BTU Zone)Approximate Room Size (BTU Zone)
ModelBTU/HR
Input
BTU/HR
Output
35793579
DV-5555,00042,0001750105075058342x4232x3227x2724x24
DVC-3535,00027,700115469349538534x3426x2622x2220x20
DV-3535,00024,500102161343834032x3225x2521x2118x18
DV-2525,00017,50072943831324327x2721x2118x1816x16
DV-21515,00010,50043826318814621x2116x1614x1412x12
DV-21010,0007,0002921751259717x1713x1311x1110x10
RH-6565,00045,5001896113881363244x4434x3429x2925x25
RH-5050,00035,000145887562548638x3830x3025x2522x22
RH-3535,00024,500102161343834032x3225x2521x2118x18
RH-2525,00017,50072943831324327x2721x2118x1816x16
GWT-5050,00037,000154292566151439x3930x3026x2623x23
GWT-3535,00025,900107964846336033x3325x2522x2219x19
GWT-2525,00018,50077146333025728x2822x2218x1816x16
FAW-4040,00031,000129277555443136x3628x2824x2421x21
FAW-5555,00042,0001750105075058342x4232x3227x2724x24
708865,00045,5001896113881363244x4434x3429x2925x25
508845,00031,500131378856343836x3628x2824x2421x21
358832,50022,75094856940631631x3124x2420x2018x18

This Chart should be used as a guide only.
1.  Multiply the square feet of area by the ceiling height to determine cubic feet.  (Length x Width x Height = cubic feet)
2. Determine BTU zone from the map; either zone 3, 5, 7, or 9.
3.  Multiply the cubic feet by your BTU zone (3, 5, 7, 9).  This number will be the BTU/HR output that is required to heat your area.
4.  Go to the BTU/HR output column to match as closely as possible your BTU needs with heater output.  You will notice several models (see Model column) of heaters will have the required BTU output to heat your area.

EXAMPLE:
Room size is 20' x 20'
Ceiling height is 8'
BTU Zone is 7

20' x 20' x 8' x 7 = 22,400 BTU/HR Output
Models available:  DV-35, RH-35, GWT-35, 3588

**Notes: Not all heater models are allowed by some local codes.  At high altitudes additional heat may be required.  If you have a single room with 4 exterior walls, additional heat may be required.

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