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35,000 BTU, 1-Stage NG, Infrared Radiant Heater

35,000 BTU, 1-Stage NG, Infrared Radiant Heater

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Model: Sterling RSG035N1

Actual product may vary from photos.

Model: Sterling RSG035N1

You save: 36%
Compare to: $700.00
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In Stock and Ready to Ship
If ordered by 1PM CST M-F, ships same day. All items on your order must be in stock for same-day shipping.

This listing is not for a complete heater. Sterling part number 43468000 is required to complete this heater assembly. 

The power of radiant heat, the Sterling infrared tube heater puts the warmth of the sun inside your building, and it reduces your fuel bills up to 50%! Its radiant heat warms people, concrete floors, and objects. The heat is absorbed and re-radiated to warm the entire area through convection. This, combined with the fact that it is powered by gas, adds up to one unbeatable combination. So, consider a very warm and efficient alternative to competitive heaters just blowing hot air. Consider the Sterling infrared tube heater.

General Features

  • Vacuum System - Products of combustion are pulled through the combustion chamber for greater safety. . . virtually eliminating the possibility of combustion gases leaking into the heated space.
  • Solid State Ignition System - Reliable electronic direct spark ignition system with 100% gas safety shut-off control and 30-second prepurge. . . safety and efficiency assurance.
  • U-Tube Design - Provides uniform emitter tube temperatures and energy distribution on the floor. . . unlike straight tube heaters which are always hotter at the burner end than at the exhaust end.
  • Warranty - 5-year limited combustion chamber warranty.
  • Other Features - Heavy-duty combustion chamber, aluminum reflectors with 97% reflectivity rating, diaphragm safety switch for proof of venting, and system indicator lights.

The Economical Alternative For Hard-To-Heat Spaces up to 5,000 Square Feet

  • Residential Garages
  • Vestibules
  • Entryways
  • Greenhouses
  • Enclosed Patios
  • Solariums
  • Workshops
  • Swimming Pools
  • Farm Buildings
  • Clubhouses
  • Small Businesses
  • Auto Garages
  • Warehouses
  • Print Shops
  • Machine Shops
  • Small Manufacturing Facilities
System Information
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Fuel Type
Natural Gas
Ignition Type
Direct Spark
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Combustion Type
Power Vented
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Product Type
Tools and Replacement Parts
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Efficiency Percentage (AFUE)
84.5 %
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Base Heating Capacity
35000 BTU
Effective Heating Capacity (BTUs)
Electrical Information
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60 Hz
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Voltage Phase
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120 Volts
Product Dimensions
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111.000000000 Inches
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18 1/2 Inches
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10 1/2 Inches
Product Weight
88 lbs
Important Measurements
Minimum Ceiling Clearance to Combustibles
4 Inches
Minimum Floor Clearance to Combustibles
57 Inches
Minimum Side Clearance to Combustibles
12 Inches
Piping Connections - Gas
1/2 inches
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Orifice Size
.110 inches
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Flue Pipe Diameter
Combustion Chamber Warranty
5 Years
Certified for
Commercial / Industrial
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