Automatic Boiler Selection Tool

Hot Water Systems (SH/LT):

Supply Water Temperature deg F required
Return Water Temperature deg F required
GPM PPH Water Flow Rate required

Domestic Hot Water (DHW) optional

Elevation 500 1000 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 ASL

Fuel Price ($/mbtu): 10.00 8.00 8.25 8.50 8.75 9.00 9.25 9.50 9.75 10.00 10.25 10.50 10.75 11.00 11.25 11.50 11.75 12.00 12.25 12.50 12.75 13.00 13.25 13.50 13.75 14.00 14.25 14.50 14.75 15.00 15.25 15.50 15.75 16.00 16.25 16.50 16.75 16.00 16.25 16.50 16.75 17.00 17.25 17.50 17.75 18.00 18.25 18.50 18.75 19.00 19.25 19.50 19.75 20.00 20.25 20.50 20.75 21.00 21.25 21.50 21.75 22.00 22.25 22.50 22.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 5.75 6.00 6.25 6.50 6.75 7.00 7.25 7.50 7.75 optional
For comparing the energy savings of condensing boilers to conventional boilers.

Annual Operating Hours: 8750 1 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 optional
For comparing the energy savings of condensing boilers to conventional boilers.

Selection by BTU Input optional
For space heating hot water systems only when BTU input is the only known data point.