Sterling has been a leader in the gas heater industry for over 50 years. Sterling unit heaters are well known for being highly efficient, reliable, and durable. These gas heaters are available in sizes ranging from 30,000 to 400,000 BTUs in both standard and separated combustion setups with efficiencies as high as 97%. Whether your application is a greenhouse, garage, shop, or warehouse, Sterling has a gas heater to fit your needs. Sterling heaters are made in the USA.


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Stainless Steel Category 3 Vent 5" Universal Drain vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, drain, condensate
Price: $79.00
Availability: In stock
Item #: 4651330 -

    The universal drain is used to drain condensation if you do not have a 1/4" for foot downward slope in your horizontal vent line or in vertical venting applications also. The stainless steel heater vent pipe and fittings feature patented built-in mechanical locking band and triple-lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90° from mechanical locking bands. All pipe and fittings are UL1738 approved for category II, III and IV venting...

    Stainless Steel Category 3 Vent 90 Degree Elbow vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, elbow
    Price: $62.00
    Availability: In stock

      The 90 degree elbow allows installation of a gas heater at a 90 degree angle inside the structure. It can also be used if vertical runs are needed as well. The angle is not adjustable. This stainless steel vent pipe fitting features a patented built-in mechanical locking band and triple-lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90° from mechanical locking bands. All pipe and fittings are UL1738 approved for category II, III and IV...

      Stainless Steel Category 3 Vent Adjustable Wall Thimble + Pipe vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, thimble
      Price: $74.00
      Availability: In stock

        This unique wall thimble has a built-in 18" section of adjustable pipe which goes to the inside of your structure giving you a lot of flexibility when running the vent pipe to your heater. The pipe is also sealed to the thimble so there is no air leakage to worry about. This thimble is for walls 4 1/4" to 8 1/2" thick (extensions are available for thicker walls). The stainless steel heater vent pipe and fittings feature patented built-in mechanical locking band and triple-lipped directional...

        Stainless Steel Category 3 Vent Drip Tee vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, tee, drip
        Price: $47.00
        Availability: In stock

          The drip tee is used to drain condensation if you do not have a 1/4" for foot downward slope in your horizontal vent line. Drip tee are for horizontal installations only. The stainless steel heater vent pipe and fittings feature patented built-in mechanical locking band and triple-lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90° from mechanical locking bands. All pipe and fittings are UL1738 approved for category II, III and IV venting...

          Stainless Steel Category 3 Vent Firestop Flashing vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, flashing
          Price: $26.00
          Availability: In stock

            Firestop flashings are recommended for venting through combustible walls less than 4" thick. The stainless steel heater vent pipe and fittings feature patented built-in mechanical locking band and triple-lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90° from mechanical locking bands. All pipe and fittings are UL1738 approved for category II, III and IV venting applications. What is UL 1738? In short, it is a US standard for gas venting...

            Stainless Steel Category 3 Vent Storm Collar vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, storm, collar
            Price: $22.00
            Availability: In stock

              The storm collar is used to create a seal around the vent pipe and the firestop flashing or wall pass through. No collar is needed with the adjustable wall thimble. All pipe and fittings are UL1738 approved for category II, III and IV venting applications. What is UL 1738? In short, it is a US standard for gas venting systems required in category III applications. Category III refers to positive vent pressure which is created by exhaust blowers in unit heaters. These vent systems must be...

              Stainless Steel Category 3 Vent Tee vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, tee
              Price: $53.00
              Availability: In stock

                Firestop flashings are recommended for venting through combustible walls less than 4" thick. The stainless steel heater vent pipe and fittings feature patented built-in mechanical locking band and triple-lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90° from mechanical locking bands. All pipe and fittings are UL1738 approved for category II, III and IV venting applications. What is UL 1738? In short, it is a US standard for gas venting...

                Stainless Steel Category 3 Vent Tee Condensate Cap vent, flue, duct, pipe, furnace, exhaust, gas, modine, sterling, heater, category, tee, condensate, cap
                Price: $26.00
                Availability: In stock

                  Condensate caps are designed to be used with the Tee fittings in vertical or horizontal venting systems. It is placed in the lowest port of the Tee and collects any condensate that forms in the venting. The stainless steel heater vent pipe and fittings feature patented built-in mechanical locking band and triple-lipped directional gaskets. All pipes and components are engineered with smooth clean welds located 90° from mechanical locking bands. All pipe and fittings are UL1738 approved for...

                  Stainless Steel Category 3 Wall Thimble Extension
                  Price: $18.95
                  Availability: In stock

                    The wall thimble extension is used to add 6” of length to Wall Pass Through and Wall Thimble for thicker walls. Item # 4650155, 4651155, 4651350

                    Concentric Vent Combustion / Inlet Air Pipe inlet, combustion, air. vent, flue, duct, pipe, furnace, exhaust, gas, sterling, heater, category
                    Price: $7.95
                    Availability: In stock

                      This galvanized steel vent pipe is used for the combustion (inlet) air side of the Sterling GG heaters when using the concentric vent kit. 4" and 5" pipe connect the air inlet on the heater to the interior inlet on the concentric vent box. 7" and 9" pipe connect to the exterior inlet opening on the concentric vent box and run through the exterior wall to the outside of the structure being heated. Sterling GG30, GG45, GG60, and GG75 use 4" and 7" piping. Sterling GG90, GG105, and GG120 use 5"...

                      Concentric Vent Inlet Tee and Cap
                      Price: $24.90
                      Availability: In stock
                      Item #: 462042 -

                        This galvanized steel tee and condensate cap set are used to transition to a vertical run in the combustion (inlet) air side of the Sterling GG heaters when using the concentric vent kit. Sterling GG30, GG45, GG60, and GG75 use 4". Sterling GG90, GG105, and GG120 use 5". Features 26 gauge galvanized steel construction Crimped end for a secure interlocking fit Item # 4620420, 4620421, 4620423, 4620425, 4620426, 4620428 ...

                        Sterling Blower Motor Assembly
                        Price: $149.00
                        Availability: In stock

                          All stocked Sterling exhaust blower motors are listed below. They are all 120v motors. Blower motors only come with what is shown in the picture. Sterling Part # Fits Sterling Models J35R0470011J35R04700 GG30, GG45, TF30, TF45, TF60, TF75, TF100, TF125, TF150, RF30, RF45, RF60, RF75, SF30, SF45, SF60, SF75, BRT30, BRT45, BRT60, BRT75, BRU30, BRU45, BRU60, BRU75, BTU30, BTU45, BTU60, BTU75, J35R0851011J35R08510 GG60, GG75, TF60, TF75, RF60, RF75, SF60, SF75, BRT60, BRT75, BRU60, BRU75, BTU60,...

                          Sterling Gas Heater Flame Sensor
                          Price: $45.00
                          Availability: In stock
                          Item #: 4075360 -

                            Sterling part # J38R06890-003. Flame sensor for Sterling & Beacon Morris gas heaters. Used On The Following Model Numbers:TF030, TF045, TF060, TF075, TF090, TF100, TF125, TF150, TF175, TF200, TF250, TF300, TF350, TF400, RF030, RF045, RF060, RF075, RF090, SF030, SF045, SF060, SF075, GG030, GG045, GG060, GG075, GG090, GG105, GG120, SF100, SF125, SF150, SF175, SF200, SF250, SF300, SF350, SF400, TC100, TC125, TC150, TC175, TC200, TC250, TC300, TC350, TC400, SC100, SC125, SC150, SC175, SC200,...

                            Sterling GG Access Panel Gasket
                            Price: $32.00
                            Availability: In stock
                            Item #: 4075135 -

                              The Sterling GG access panel gasket is 7' of 5/8" thick foam gasket material that has an aggressive adheasive on the back to adhere to the access panel opening of the GG heaters. Gasket will fit all GG heater models. Recommended if using the GG air inlet collar instead of the concentric vent kit.

                              Sterling GG Heater Flame Rollout Switch sterling, heater, part, flame, rollout, switch, gg, gas, beacon, morris, brt, furnace, replacement
                              Price: $49.00
                              Availability: In stock
                              Item #: 4075305 -

                                Sterling part # 11J11R04849-003. Manual flame rollout safety switch for Sterling GG heaters. Used On The Following Model Numbers:GG030, GG045, GG060, GG075, GG090, GG105, GG120

                                Sterling GG Heater High Limit Switch sterling, heater, gas, gg, brt, high, limit switch, auto, overheat, reset, part, beacon, morris
                                Price: $59.00
                                Availability: In stock

                                  Sterling GG high limit switch replacement parts. Sterling Part # Fits Sterling Models J11R08365-002 GG30, GG45, BRT30, BRT45 J11R08365-001 GG60, GG75, GG90, GG105, GG120, BRT60, BRT75, BRT90, BRT105, BRT120 Item # 4075318, 4075320 ...

                                  Sterling GG Inlet Air Collar
                                  Price: $57.00
                                  Availability: In stock
                                  Item #: 407512 -

                                    Sterling Inlet air collar and gasket set for GG series heaters. This allows you to connect an air inlet pipe to the Sterling GG heaters without the concentric vent kit. With this setup you will have separate exhaust and intake exit points in your structure. The GG heater access panel gasket is also needed with this setup to provide an airtight seal around the access panel. Please note: Check with your local inspector/installer before using this instead of the concentric vent kit in a...

                                    Sterling GG Spark Ignitor
                                    Price: $59.00
                                    Availability: In stock
                                    Item #: 4075325 -

                                      Sterling part # J38R06891-003. Spark ignitor for Sterling GG gas heaters. The angled ignitor probe measures 1.25 inches, and the straight rod measures 1.75 inches. Used On The Following Model Numbers:GG30, GG45, GG60, GG75, GG90, GG105, GG120, BRT30, BRT45, BRT60, BRT75, BRT90, BRT105, BRT120

                                      Sterling Heater Control Board J28R06881, part, heater, gas, board, control, spark, ignition, sterling, beacon, morris, dayton, circuit, terminal
                                      Price: $189.00
                                      (3)
                                      Availability: In stock
                                      Item #: 4075120 -

                                        Sterling part # J28R06881 (11J28R06881). Direct spark ignition board for Sterling & Beacon Morris gas heaters. This is the newest model which comes with the remote LED diagnostic light. Used On The Following Model Numbers: (Direct spark only)TF030, TF045, TF060, TF075, TF090, TF100, TF125, TF150, TF175, TF200, TF250, TF300, TF350, TF400, RF030, RF045, RF060, RF075, RF090, SF030, SF045, SF060, SF075, GG030, GG045, GG060, GG075, GG090, GG105, GG120, SF100, SF125, SF150, SF175, SF200, SF250,...

                                        Sterling Heater Fan Motor fan, motor, sterling, heater, gas, replacement, part, beacon, morris, propeller, blower
                                        Price: $119.00
                                        Availability: In stock

                                          All stocked Sterling fan / blower motors are listed below. They are all 120v motors. Fan motors only come with what is shown in the picture. Sterling Part # Fits Sterling Models J31R0476611J31R04766 GG30, GG45, TF30, TF45, RF30, RF45, SF30, SF45, BRT30, BRT45, BRU30, BRU45, BTU30, BTU45 J31R0409111J31R04091 GG60, GG75, TF60, TF75, RF60, RF75, SF60, SF75, BRT60, BRT75, BRU60, BRU75, BTU60, BTU75, QVF100 J31R04092-00211J31R04092-002 GG90, GG105, GG120, TF90, TF100, RF90, SF90, BRT90, BRT105,...

                                          Sterling Heater Gas Valves sterling, part, gas, valve, heater, gg, tf, xf, propane, natural, 24, volt, direct, spark, single, stage
                                          Price: $119.00
                                          Availability: In stock

                                            Replacement Sterling gas valves for GG and TF unit heaters. All valves are 24v, single stage, and designed for direct spark ignition systems. Sterling Part # Fits Sterling Models J28R06892-00111J28R06892-001Natural Gas TF030, TF045, TF060, TF075, TF090, TF100, TF125, TF150, TF175, TF200, RF030, RF045, RF060, RF075, RF090, SF030, SF045, SF060, SF075, GG030, GG045, GG060, GG075, GG090, GG105, GG120, SF100, SF125, SF150, SF175, SF200, TC100, TC125, TC150, TC175, TC200, SC100, SC125, SC150, SC175,...

                                            Sterling Heater Pressure Switch
                                            Price: $139.00
                                            Availability: In stock

                                              All stocked Sterling pressure switches are listed below. Sterling Part # Fits Sterling Models J11R06779-00111J11R06779-001 GG30, GG45, TF30, TF45, TF60, TF75, TF100, TF125, TF150, TF300, TF350, TF400, RF30, RF45, RF60, RF75, SF30, SF45, SF60, SF75, BRT30, BRT45, BRU30, BRU45, BRU60, BRU75, BTU30, BTU45, BTU60, BTU75, BTU100, BTU125, BTU150, BTU300, BTU350, BTU400 J11R06780-00811J11R06780-008 GG60, GG75, BRT60, BRT75 J11R06779-00211J11R06779-002 GG105, GG120, TF90, TF175, TF200, TF250, RF90,...

                                              Sterling Heater Transformer sterling, heater, part, transformer, xformer, 24, volt, gas, gg, tf, bru, rf, brt, btu, beacon, morris
                                              Price: $65.00
                                              Availability: In stock
                                              Item #: 4075410 -

                                                Sterling part # J14R03245-012. 24 volt transformer for Sterling & Beacon Morris gas heaters. Used On The Following Model Numbers:TF030, TF045, TF060, TF075, TF090, TF100, TF125, TF150, TF175, TF200, TF250, TF300, TF350, TF400, RF030, RF045, RF060, RF075, RF090, SF030, SF045, SF060, SF075, GG030, GG045, GG060, GG075, GG090, GG105, GG120, SF100, SF125, SF150, SF175, SF200, SF250, SF300, SF350, SF400, TC100, TC125, TC150, TC175, TC200, TC250, TC300, TC350, TC400, SC100, SC125, SC150, SC175,...

                                                Sterling Specified Americap Vent Terminal
                                                Price: $25.00
                                                Availability: In stock

                                                  This is Sterling's approved vent cap for vertical / horizontal venting and high wind applications. The Americap is UL-listed, constructed of aluminum, and its patented design of ports and baffles keep rain and debris out of the vent. They are compatible with all of the vent pipe that we offer. Item # 4620055, 4620060

                                                  Sterling TF / XF Spark Ignitor
                                                  Price: $59.00
                                                  Availability: In stock
                                                  Item #: 4075465 -

                                                    Sterling part # J38R06891-001. Spark ignitor for Sterling TF & XF gas heaters. The angled ignitor probe measures 0.875 inches, and the straight rod measures 1.375 inches. Used On The Following Model Numbers:TF100, TF125, TF150, TF175, TF200, TF250, TF300, TF350, TF400, BTU100, BTU125, BTU150, BTU150, BTU175, BTU200, BTU250, BTU300, BTU350, BTU400

                                                    Sterling TF Heater High Limit Switch  sterling, heater, gas, tf, btu, high, limit switch, auto, overheat, reset, part, beacon, morris
                                                    Price: $59.00
                                                    Availability: In stock
                                                    Item #: 4075570 -

                                                      Sterling part # J11R00306-002. High limit overheat switch for Sterling & Beacon Morris gas heaters. Used On The Following Model Numbers:TF100, TF125, TF150, TF175, TF200, TF250, TF300, TF350, TF400, BTU100, BTU125, BTU150, BTU150, BTU175, BTU200, BTU250, BTU300, BTU350, BTU400, QVF100, QVF125, QVF150, QVF175, QVF200, QVF250, QVF300, QVF350, QVF400, QVSF100, QVSF125, QVSF150, QVSF175, QVSF200, QVSF250