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Home Heating and Cooling Heat and Air Conditioning Heaters Gas Heaters - Natural F299721 MHVFB20NGT 20K VENT FREE HEATER NATURAL GAS ELECTRONIC SPARK IGNITION

F299721 MHVFB20NGT 20K VENT FREE HEATER NATURAL GAS ELECTRONIC SPARK IGNITION

PART 653012
SUPPLIER ENERCO GROUP INC/MR HEATER
SUPPLIER PART # F299721
RANK B
SHELF PACK 1
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About this item

F299721 – MHVFB20NG VENT FREE NATURAL GAS HEATER

20,000 BTU Vent‑Free Blue Flame Natural Gas Heater
Electronic Spark Ignition

Product Description

The F299721 (Model MHVFB20NGT) is a 20,000 BTU vent‑free blue flame natural gas heater designed to provide safe, efficient supplemental heat for indoor living spaces. Using clean‑burning blue flame convection technology, it evenly warms rooms up to 700 sq. ft. by circulating heated air throughout the space—similar to a central heating system.

This model features electronic spark ignition, powered by a battery‑operated igniter, ensuring fast and reliable startup without the need for matches or electricity. Ideal for power outages, workshops, cabins, basements, sunrooms, additions, or any area where extra heat is needed.

The heater can be installed as either a wall‑mounted unit or floor‑standing appliance using the included mounting bracket and legs. Built‑in safety systems include an Oxygen Depletion Sensor (ODS) for indoor-safe operation and automatic shutoff protection.

Key Features

  • 20,000 BTU/hr heating capacity
  • Natural Gas fuel
  • Blue Flame burner technology provides even convection heat
  • Electronic spark ignition (battery included)
  • Heats up to 700 sq. ft.
  • Thermostatic temperature control
  • Vent‑free design—no chimney or power required
  • Mounting options: wall mount or floor stand (hardware included)
  • Oxygen Depletion Sensor (ODS) safety shutoff
  • Compatible with optional blower fan kit (F299201)
  • High altitude limit: not for use above approx. 4,500 ft

Specifications

  • Model: MHVFB20NGT
  • SKU: F299721
  • BTU Output: 20,000 BTU/hr
  • Heating Area: Up to 700 sq. ft.
  • Heat Type: Blue Flame (convection)
  • Fuel Type: Natural Gas
  • Ignition: Electronic spark (battery‑powered)
  • Mounting: Wall or floor
  • Safety Features: ODS, automatic shutoff
  • Color: White w/ black grille
  • Weight: Approx. 23–27 lbs
  • Use: Indoor supplemental heat

Ideal For

  • Residential rooms
  • Cabins & cottages
  • Basements
  • Garages & workshops
  • Sunrooms & enclosed porches
  • Emergency backup heat

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Brand Mr.Heater
Model MHVFB20NGT
Heat Type Blue Flame
Fuel Type Natural Gas
Ignition Electronic Spark
Mounting Wall or Floor
Saftey Features ODS, Automatic Shutoff
Use Indoor supplemental heat
UPC Code 089301000858
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