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Types of heater: Gas

Gas-fired heating equipment is the most economical and common source of heating in various applications. This type of equipment comes in permanent direct-fired, temporary indirect-fired, and temporary direct-fired options with different features and advantages. Gas heaters offer high fuel efficiency, lower energy costs, versatility, and portability, making them a popular choice. However, there are some disadvantages related to safety codes and restrictions in certain areas.

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Types of heater: Gas

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  1. Types of heater: Gas

  2. Why Use Gas-firedHeating Equipment • Most economical heating source • Wide variety of equipment available • Most common source of heating in all applications • Available far into the future

  3. Types of Gas Heating Equipment Permanent, Direct-fired • Roof top“Make-up air” style • No loss of energy out the flue vent • Low temperature discharge • Contained flame • Equipment out of the way

  4. Types of Gas Heating Equipment Temporary, Indirect-fired • Large physical size for amount of heat output • Contained flame • Requires venting - loss of energy • Limited uses • Lower discharge temperatures • Minimal clearance from combustibles

  5. Types of Gas Heating Equipment Temporary, Direct-fired • “Tube-type” style • Higher discharge temperatures, relative to CFM, with hot spots as high as 700°F • Open flame • Greater clearance from combustibles • Low CFM of air

  6. Types of Heating Equipment Temporary, Direct-fired • “Make-up air” style • Lower temperature raise, from 90°F low fire to 220°F high fire • Contained flame • Minimal clearance from combustibles • Expansive range of styles and sizes • Highest fuel efficiency

  7. Gas (Propane / Natural) Advantages • Least expensive energy cost • Propane at $.80/gallon = $8.64/1M BTU’s • Natural gas at $.50/therm = $5/1M BTU’s • Largest range of equipment available • Versatile & portable

  8. Gas (Propane / Natural) Advantages Con’t. • Low electrical requirement • 1M BTU unit = 460 volt/10 amp • Low installation cost • High temperature rise

  9. Gas (Propane / Natural) Disadvantages • Some codes may not allow gas fired equipment or propane • May not be safe to use in certain areas or buildings

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