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Williams 2001622A

20,000 BTU Console Heater, 77.5% Efficiency, Natural Gas, Enclosed Front

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    • Pro Installation

Enjoy instant warmth plus lower heating costs with a traditional enclosed or fire-place look heater. New glass-front "fireplace-look" or enclosed vented hearth heaters provide comfort for hard-to-heat areas. Williams vented hearth heaters are designed to give you maximum efficiency, low fuel consumption and quiet operation. Unit comes from factory set up for natural gas. In order to operate on LP (liquid propane), the Williams 8945 LP Conversion Kit must be purchased seperately. Please read this Important Safety Notice.

NOTICE TO BIRD OWNERS: We understand these furnaces may contain Teflon, which, when heated for the first time, may be lethal to birds although is harmless to humans.  Do not use this product without protecting your bird from possible PTFE poisoning. 

Standard Features

  • No electricity required for heat ... great during power outages.
  • Burners engineered for quiet ignition and maximum heat efficiency.
  • Louvered-top design and front grill for improved heat circulation.
  • Built-in draft diverter to permit close-to-wall installation.
  • Natural and propane gas models (Conversion kit available).
  • "Matchless" pilot ignitor.
  • Automatic temperature and safety controls. Thermostat may be mounted on the wall or on the furnace cabinet. Included with all models.

Installation Note: 

For proper venting, do not attach a 90 degree elbow directly to the draft diverter. It is recommended to attach 2 feet (.6m) of straight vent pipe before an elbow is used. Use 45 degree elbows if possible. Run flue pipe as direct as possible; using no more than two elbows. 

Heating Capacity

The amount of heat, rated in BTUs that the item can produce.

Heating Capacity
20000 BTU
Effective Heating Capacity (BTUs)
Vent Pipe Diameter
3 inches
77.5 %
Efficiency (% AFUE)

The percentage of energy converted into output by the unit. The remaining percentage is lost during the conversion process. The higher the efficiency, the lower the operational cost.

Efficiency (% AFUE)
71 %
Electrical Requirement
Fuel Type
Liquid Propane Convertible / Natural Gas
Ignition Type
Matchless Pilot
Front Panel
Equipment Type
Console Furnace
Exhaust Venting
Product Weight
45 lbs
Meets CSA Standards

Canadian Standards Association

Meets CSA Standards
Meets Canadian OEE Standards

Standards established by Canada's Office of Energy Efficiency.

Meets Canadian OEE Standards
23 Inches
11 Inches
21 1/2 Inches
Heat Exchanger Warranty
10 Years
Parts Warranty
1 Years