With twenty years of proven dependability, economy and comfort, it's no wonder Monitor owners rave about their heaters. Saving money on heating is top priority these days. A Monitor heater can save you hundreds each season and thousands over its long life. And it's reliable, clean and safe. Get the comfort and savings you deserve.
Monitor 2400 - heating capacity: 1,800-2,000 square feet
monitor 2400 All Monitor heaters have a 30-minute memory backup to retain auto-programming in the event of a power interruption.
  High High/Med Med/Low Low
BTU Rating 43,000 32,400 24,600 16,200
BTU Output
per hour
37,200 26,900 20,700 13,600
Fuel consumption
Gals/Hour
.319 .24 .15 .12
Fuel Source Separate tank
Fuel/Power K-1 Kerosene / 110 Volt
Dimensions/Wt. 26.6"H x 28.7"W x 13.8"D / 82 lbs.
Efficiency 83% Gross, 88% NET, 85% AFUE
Monitor 3800 - heating capacity: up to 1,500 square feet
monitor 3800 All Monitor heaters have a 30-minute memory backup to retain auto-programming in the event of a power interruption.
  BTU input Fan output AFUE
Natural Gas Max 38,000 High 388 CFM 83%
Min 21,600 Low 300 CFM
LP Max 34,500 High 388 CFM 83%
Min 21,600 Low 300 CFM
Elec. Req. 120 Volt AC 60Hz <2Amps
Dimensions 26.6"H x 28.7"W x 13.8"D / 82 lbs.
Efficiency 83% AFUE
Monitor 2200 - heating capacity: up to 1,000 square feet
monitor 2200 All Monitor heaters have a 30-minute memory backup to retain auto-programming in the event of a power interruption.
  High High/Med Med/Low Low
BTU Rating 22,000 17,400 21,400 9,600
BTU Output
per hour
18,260 14,440 10,290 7,970
Fuel consumption
Gals/Hour
.164 .13 .09 .07
Fuel Source Separate tank or optional 1.32 internal capsule tank
Fuel/Power K-1 Kerosene / 110 Volt
Dimensions/Wt. 20.6"H x 20.9"W x 12.4"D / 55 lbs
Efficiency 93%, 88% NET, 85% AFUE
Monitor 1800 - heating capacity: up to 800 square feet
monitor 1800 All Monitor heaters have a 30-minute memory backup to retain auto-programming in the event of a power interruption.
  BTU input Fan output AFUE
Natural Gas Max 20,000 High 176 CFM 83%
Min 16,000 Low 113 CFM
LP Max 20,000 High 176 CFM 83%
Min 13,400 Low 133 CFM
Elec. Req. 120 Volt AC 60Hz <2Amps
Dimensions 20.6"H x 20.9"W x 12.4"D / 55 lbs.
Efficiency 83% AFUE