2. Types of heater: Gas

3. Why Use Gas-fired Heating Equipment ä Most economical heating source ä Wide variety of equipment available ä Most common source of heating in all applications ä Available far into the future

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

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

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

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

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

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

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