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Home Heating and Cooling Heat and Air Conditioning Heaters Gas Heaters - Natural F299821 MHVFR20NGT VENT FREE RADIANT HEATER

F299821 MHVFR20NGT VENT FREE RADIANT HEATER

PART 653004
SUPPLIER ENERCO GROUP INC/MR HEATER
SUPPLIER PART # F299821
RANK A
SHELF PACK 1
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About this item

F299821 – MHVFR20NGT VENT FREE RADIANT HEATER

20,000 BTU Vent‑Free Radiant Natural Gas Heater

Product Description

The F299821 (Model: MHVFRD20NGT) is a 20,000 BTU vent‑free radiant natural gas heater designed to provide powerful supplemental heat for a wide range of indoor spaces. Using infrared radiant heating technology, it delivers sun‑like warmth by heating objects and people directly rather than just warming the air, making it an exceptional choice for cold rooms, workshops, basements, cabins, sunrooms, and additions.

This heater is capable of heating areas up to 700 sq. ft. and features an integrated thermostat for automatic temperature control. It includes battery-powered electronic ignition, allowing easy and reliable startup without matches or external power.

The unit can be wall-mounted or floor‑standing, with mounting brackets and legs included for installation flexibility. Safety features include a factory-installed Oxygen Depletion Sensor (ODS), which automatically shuts off the heater if oxygen levels drop, ensuring safe operation indoors.

Key Features

  • 20,000 BTU/hr radiant heat output
  • Natural gas vent‑free operation
  • Heats spaces up to 700 sq. ft.
  • Infrared radiant burner for instant, directional warmth
  • Adjustable thermostat maintains set room temperature
  • Battery-powered electronic ignition (battery included)
  • Wall mount or floor mount with included hardware
  • Oxygen Depletion Sensor (ODS) for indoor safety
  • Blower fan compatible (Fan Kit F299201 sold separately)
  • Not for use above 4,500 ft elevation

Specifications

  • Model Number: F299821 / MHVFRD20NGT
  • BTU Rating: 20,000 BTU/hr
  • Heating Area: Up to 700 sq. ft.
  • Fuel Type: Natural Gas
  • Heat Type: Radiant infrared
  • Mounting: Wall or floor (legs and hardware included)
  • Ignition: Electronic, battery-powered
  • Safety Systems:
    • Oxygen Depletion Sensor (ODS)
    • High-limit safety shutoff
  • Dimensions: Approx. 23–27" H × 11" W × 11–20" D (varies by vendor listing)
  • Weight: ~25 lbs

Applications

Ideal for:

  • Residential supplemental heat
  • Workshops & garages
  • Cabins & seasonal rooms
  • Basements & interior additions
  • Sunrooms & enclosed porches

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Brand Mr.Heater
Color White
Model F299821 / MHVFRD20NGT
Btu Rating 20,000 BTU/hr
Heating Area Up to 700 sq. ft.
Fuel Type Natural Gas
Heat Type Radiant Infrared
Mounting Wall or Floor (legs and hardware included)
Ignition Electronic, battery powered
Saftey Systems Oxygen Depletion Sensor (ODS), High-limit safety shutoff
UPC Code 089301001145
Shelf Pack 1
Minimum Order Qty 1
Supplier Name Mr Heater
Supplier Short Name Mr. Heater
Supplier Address 1 4560 W 160th PO Box 6660
Supplier City Cleaveland
Supplier State OH
Supplier Zip 44135
Country US
Supplier Email david@cdhassociates.com
Supplier Url www.mr.heater.com
Buyer Name Jason Monroe
Supplier Phone (800) 251-0001
Supplier Fax (800) 321-0552
Our Customer Id 10686
Rep Name David Guthrie
Rep Address @ Factory Iris McClure iris.mcclure@us-egi.com , TN
Rep Phone (423) 894-9417
Rep Cell (615) 390-1180
Rep Fax (615) 377-2355
Rep Email david@cdhassociates.com
Rep Agency CDH and Associates