* Prices do not include sales tax or freight. Quantity discounts may apply.

Tubular Gas-Fired Unit Heaters
The Sterling model "RF" unit heater conforms with the latest A.G.A. and C.G.A. certification standards for installations in residential garages. The "RF" unit is only offered in a Low Profile (sizes 30 - 90 MBH) style. Sizes: 30,000 - 90,000 BTU/HR   CFM Range: 500 - 1,375 The Sterling model "TF" unit heater is the latest addition to Sterling's line of energy efficient gas-fired unit heaters. The "TF" is a propeller type unit heater that combines the lastest tubular heat exchanger and inshot burner technology with the quality and reliability you have come to know with Sterling. Available in two cabinet styles, Low Profile (sizes 30-90 MBH) and Vertical type (100-400 MBH). Sizes: 30,000 - 400,000 BTU/HR   CFM Range: 500 - 5800 Standard Features:   - 20 gauge tubular heat exchangers   - Inshot burners   - Hot surface pilot ignition system   - 20 gauge jacket panels with baked enamel finish   - Power vented   - Easy access control panel   - Certified for category I and III venting   - Terminal strip low voltage wiring   - 81% thermal efficiency   - 10 year warranty   - Factory fire tested
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Propeller Type Gas-Fired Unit Heaters
The Sterling model "QVF" gas-fired unit heater is a complete heat generating and distribution plant equipped with automatic safety controls all packaged in a modern streamlined, space saving casing for mounting near the ceiling. The Sterling model "QVEF" high efficiency unit heater achieves 80% thermal efficiencies and annual fuel savings of up to 25% over conventional natural vented unit heaters. The "QVEF" features a standard factory installed power venter and sealed fuel collector that controls combustion and excess air during on cycles. Spark ignition is also standard. The Sterling model "QVSF" separated combustion unit heater is designed to be installed in mildly hostile enviroments where dusty, dirty, and mild corrosives exist, or high humidity or slightly negative pressures prevail. The burners , pilot and flue system are enclosed within the unit. The entire combustion process is literally unaffected by the atmosphere in the space where the unit is located. units are available from 100-400 MBH and carry a one year warranty. Standard Features:   - A.G.A./C.G.A. certified for 80% efficiencies   - Aluminized steel heat exchanger - 20 gauge   - Optional 409 and 321 stainless steel heat exchangers   - Single stage gas valve   - Optional 2 stage and modulating gas valves   - Available in Natural or LP gas   - Easy burner access with individual removable burners   - Two point suspension   - 10 Year Warranty on models QVF and QVEF only   - 1 Year Warranty on model QVSF   - Factory fire tested
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Blower Type Gas-Fired Unit Heaters
The Sterling model "QVB" is a natural vent unit heater designed for high static applications. Blower units are also ideal for commericial and industrial applications where low noise levels are desired. The model "QVEB" high efficiency unit heater achieves annual fuel savings of up to 25 % over conventional natural vented unit heaters . The "QVEB" features a factory installed power venter and sealed fuel collector that controls combustion and excess air during on cycles. Spark ignition is also standard. The "QVEB" is available with similar optional equipment offered on the model "QVB" The Sterling model "QVSB" separated combustion unit heater is designed to be installed in mildly hostile enviroments where dusty, dirty, and mild corrosives exist, or high humidity or slightly negative pressures prevail. The burners , pilot and flue system are enclosed within the unit. The entire combustion process is literally unaffected by the atmosphere in the space where the unit is located. Units carry a one year warranty. Sterling's "QVBC" blower unit heater includes the features associated with the "QVB" model and adds a factory mounted filter cabinet. A cost effective alternative to rooftop make-up air, the "QVBC" can be combined with a stainless steel heat exchanger and discharge duct flange to become the "first step in make-up air" systems. Standard Features:   - Available from 100-400 MBH   - A.G.A./C.G.A. certified for 80% efficiencies   - Aluminized steel het exchanger - 20 gauge   - Optional 409 and 321 stainless steel heat exchangers   - Single stage gas valve   - Optional two stage and modulating gas valve   - Available in Natural or LP gas   - Easy burner access with removable burners   - Optional duct flange connection in lieu of discharge louvers   - Four point suspension   - 10 Year Warranty on models QVB, QVEB and QVBC only   - 1 Year Warranty on model QVSB   - Factory test fired
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Gas-Fired Indoor Duct Furnaces
The Sterling models "QVD" and "QVS" are natural vent indoor duct furnaces. Model "QVD" offers bottom burner access while the "QVS" offers side access. The Sterling models "QVED" and "QVES" are power vented indoor duct furnaces. Model "QVED" offers bottom burner access while the model "QVES" offers side access. Both models offer high efficiencies that achieve annual fuel savings of up to 25% over conventional natural vented unit heaters. Also featured are a factory installed power venter and sealed feul collector that controls combustion and excess air during on cycles. Spark ignition is standard.The "QVED" and "QVES" are available with all the optional equipment offered on the "QVD" and "QVS" models. The Sterling model "QVSD" separated combustion indoor duct furnaceis designed to be installed in mildly hostile enviroments where dusty, dirty, and mild corrosives exist, or high humidity or slightly negative pressures prevail. The burners , pilot and flue system are enclosed within the unit. The entire combustion process is literally unaffected by the atmosphere in the space where the unit is located. Standard Features:   - Available from 100-400 MBH   - A.G.A./ C.G.A certified for 80% efficiencies   - Aluminized steel heat exchanger - 20 gauge   - Optional 409 and 321 stainless steel heat exchangers   - Single stage gas valve   - Optional two stage and modulating gas valves   - Standard standing pilot on models QVD and QVS only   - Standard spark ignition on modelsQVED, QVES, and QVSD   - Optional spark ignition on QVD and QVS models   - Available in Natural or LP gas   - Easy burner access with individual removable burners   - Factory test fired   - 1 Year Warranty
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Cabinet Blowers
The Sterling cabinet blowers models CAB1 through CAB 4 have been designed for high static pressure applications in conjunction with an indoor duct furnace. Cabinet blowers have been specially matched for use with a single Sterling indoor duct furnace to provide maximum efficiency. Standard Features:   - Four sizes with capacities ranging from 1,250 to 8,000 CFM   - Removable side inspection panels   - Floor mounted motors (1-3 HP, 56Hz frames or larger)   - Standard transition piece when ordered with furnace   - Available with 1" washable or throw away filters
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Oil Fired Unit Heaters
The Sterling model "QVOF" oil-fired unit heater is designed to operate on number 1 & 2 fuel oils. Available in eight sizes ranging from 70 to 560 MBH (.50 to 4.00 GPH) all unit are factory assembled and ready to install. Standard Features:   - Heavy duty 18 gauge heat exchanger   - Energy efficient flame retension Beckett burner   - Adjustable discharge air louvers   - Fan/limit control   - Four point suspension   - CAD cell burner safeguard control   - 115v,60Hz
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