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Heatstar 20,000 BTU Vent Free Blue Flame Heater

SKU: he18949  |  Model: HSSVFBF20LPBT
$27900
Power Supply

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Manufacturer's Warranty

5-Year Limited Warranty

What's In The Box?
  • Heatstar 20,000 BTU Vent Free Blue Flame Heater (Propane or Natural Gas)
  • Wall Mount Bracket
  • Feet
  • Owner's Manual, Guides, and Other Documents

Info & Guides

Cold back bedrooms and detached garages are exactly what the HeatStar 20,000 BTU Vent Free Blue Flame Heater is meant to fix, without adding a chimney or ductwork. Blue flame convection heats the air in the room rather than the objects in it, and because the burner runs on gas, warmth keeps coming when the power goes out (the blower fan pauses until it returns). Offered in propane or natural gas, the line matches whichever fuel already serves the space.

Key Features and Benefits of the HeatStar 20,000 BTU Vent Free Blue Flame Heater

  • Heat Output: The 20,000 BTU heater provides supplemental warmth for rooms in the 301 to 500 square feet range that your central system struggles to reach.
  • Fuel Efficiency: Vent-free combustion keeps nearly all fuel energy in the room, operating at 99.9 percent efficiency.
  • Multiple Settings: The manual thermostat knob gives you five settings and modulates the flame as the room nears your target, cycling the burner off once it arrives.
  • Built-In Blower: A 110-120 volt blower fan pushes heated air outward, so warmth reaches the far corners faster than convection alone would carry it.
  • Oxygen Safety Sensor: A built-in low-oxygen shut-off sensor cuts the gas if oxygen in the room drops, the key safeguard for running a flueless heater indoors.
  • Push-Button Ignition: Electronic push-button ignition fires the burner using the included AA batteries, so you can light it during an outage without an outlet.
  • Bracket And Feet: A wall-mount bracket and base feet both ship in the box, giving you two installation options depending on where your gas line lands.
  • Size And Weight: The heater measures 24 x 20 x 8 inches (H x W x D) and weighs 27 pounds, so once installed it stays clear of walkways.
  • Safety Certified: Certified to ANSI and CSA standards, so the burner and shut-off design have passed independent testing before it goes on your wall.

Choose Your Fuel Type

Fuel supply is the one axis that varies, so take the version that matches the gas already serving the room: liquid propane or natural gas.

  • Liquid Propane (HSSVFBF20LPBT): Burns liquid propane, making it suited to cabins and rural properties with a tank-fed supply.
  • Natural Gas (HSSVFBF20NGBT): Connects to a utility natural gas line, so a home already piped for gas can feed the heater directly from existing service.

Sylvane's Expert Take

Choose this blue flame heater to add steady supplemental heat to a well-insulated room, where heated air stays put and keeps you comfortable longer. It performs well in cabins and garages, as well as rooms at the end of a long duct run. Expect a few extra minutes before you feel the warmth compared with a radiant model because the air heats first. Fuel choice is the only real decision here, and it changes nothing about the heat output, so let the supply already at the wall settle it.

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