Williams 55,000 BTU Counterflow Direct Vent Natural Gas Wall Heater

Item # 311800520 | Williams Part # 5507332 | UPC Code 093909298890 | UNSPSC Code 40101819
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Product Overview

This 55,000 BTU counterflow direct-vent furnace delivers powerful, consistent warmth for larger rooms, giving you the performance of a natural gas heater with efficient floor-to-ceiling circulation. The counterflow blower draws warm air from the ceiling and moves it down toward the floor, helping equalize temperatures throughout the space for more balanced comfort. Designed for installation on an exterior wall, the heater discharges all combustion by-products outdoors through a horizontal vent, creating a clean and reliable gas wall heater solution for homes, garages, workshops, or basements. Because the unit requires no electricity, it continues operating during outages and serves as a dependable indoor heater during harsh winter conditions. With a 77% AFUE rating, the furnace supports efficient operation, while the included blower and optional outlet kits expand your ability to direct heat to multiple rooms. A soft-white, powder-coated finish blends easily with most interiors and keeps the heater looking clean through everyday use. Safety features such as intermittent pilot ignition, automatic controls, and a resettable vent-limit switch support confident operation, making this system a practical choice for high-capacity gas heaters for indoor use that deliver long-term comfort and performance.

  • This 55,000 BTU model provides strong floor-to-ceiling comfort as a natural gas heater designed for rooms up to 900 sq ft
  • The counterflow system draws warm air from the ceiling and recirculates it evenly as a dependable gas wall heater
  • It operates without electricity and serves as a reliable indoor heater during power outages
  • A built-in blower increases circulation and helps this heater distribute warmth quietly
  • A soft-white, heat-resistant finish blends well with many interiors and suits a range of gas heaters for indoor use applications
  • Thermostat sold separately

Proposition 65 Information

Prop65 Warning Icon WARNING: This product can expose you to chemicals including epichlorohydrin which is known to the State of California to cause cancer and birth defects and/or other reproductive harm. For more information go to www.p65warnings.ca.gov

Specifications

Annual Fuel Utilization Efficiency (AFUE) (%)
77
Area Heated (Sq. Ft.)
900
Automatic Shut-Off
Yes
Certifications and Listings
ANSI Certified, CSA Listed
Color
White
Connection Size
1/2"
Fuel Type
Gas, Natural Gas
Heat rating (BTU/hour)
55000
Heater Type
Other
Ignition Type
Pilot
Indoor/Outdoor
Indoor
Manufacturer Warranty
Refer to Williams' Limited Warranty for warranty information
Pack Size
1
Product Depth (in.)
11.8
Product Height (in.)
87
Product Weight (lb.)
140
Product Width (in.)
14.1
Thermostat
Yes
Timer
No

Warranty

Refer to Williams' Limited Warranty for warranty information