Williams Furnace


Williams Furnace 17,700 BTU High Efficiency Direct Vent Furnaces

Fuel Type: Natural Gas

Estimated Arrival: Between and . (To All Contiguous States)

✔ Same-Day Order Processing
✔ Free Returns
✔ No Restocking Fees
✔ Financing Options Available

Text or call 888-992-1556, start live chat, or email with any questions. Our team is available to serve you 8:00 AM - 11:59 PM ET, 7 days a week.


Williams Comfort Products Made In America Since 1916!

For over 100 years, Williams has designed and manufactured quality heating, ventilation, and air conditioning products for both the home and business. It all started in 1916, when Jesse Williams began building gas steam radiators in Los Angeles under the banner Williams Radiator Company. Williams’ commitment to quality was clear from the start, and the company’s product line expanded over the next few decades to include gas-fired heating, gravity wall heating and counterflow furnaces. By 1954, Williams had expanded to a nationwide player, with a distribution and sales network that reached customers throughout the United States.

Williams reputation for quality products only increased, and in 1958 they were acquired by Continental Materials Corporation, an AMEX-listed company whose notoriety brought new levels of prestige to the firm, now called Williams Furnace Company. The company acquired Hydro-Aire/LANCO in 1986, a major manufacturer of fan coils and air handlers. As a result, Williams now offers more fan coil sizes and configurations than any other HVAC company in all of the United States. Finally, the product line was expanded in 1996 to include room console heaters.

Jesse Williams understood that his company had to adapt to grow, and so do we. Today, numerically controlled machinery is used to ensure both precision and quality. All Williams products are tested to the highest standards according to specifications set by the National Bureau of Standards. Engineering, R&D, testing and manufacturing take place at our factory in Colton, California.

Above all, we aim to treat the customer with respect and integrity to ensure that our customers come to expect the same quality from us that they will from our fine line of products.

Heating Solution to Fit Any Project Need

For nearly 100 years, Williams has offered a wide range of safety-tested, cost-efficient heating solutions to fit any home. From a studio apartment to a palatial estate, we’ve got you covered with a complete line of heating products, including both gas and electric furnaces. Come inside, and let Williams warm you up.

High Efficiency Direct Vent Furnaces

A low profile furnace that may be installed nearly anywhere.  Great for homes, apartments, offices, garages and room additions.  Natural and Propane models. 7,400 & 17,700 BTU/hr.

 Features and Benefits

  • Efficiency Ratings:
    • 7,400 Btu/hr. Series:  72% Thermal Efficiency
    • 17,700 Btu/hr. Series:  76% Thermal Efficiency
  • Natural and propane gas models
  • Easy installation — all vent material included
  • Attractive, durable fresh-white finish
  • Natural and propane models
  • Unique wall-mount design frees up floor space
  • Small, low-profile vent size
  • Sealed-combustion safety technology uses no inside room air for operation

Dimension and Clearance

 Model for Liquid Propane (1773511) and Natural Gas (1773512)

  • 3/16” to an intersecting wall.
  • 10” from the top of the furnace to the ceiling or overhang
  • 0” to the back wall
  • 2” to finished floor
  • 2” Wall hole diameter
  • 1 ⅞” Air inlet pipe diameter
  • 1 ⅜” Exhaust pipe diameter

 Programmable Timer

A Programmable thermostat in your home is one of the easiest ways to save energy and money. On/Off, seven day timer/clock.

Model 173511 and 1773512

Summertime Ventilation

A two-speed recirculating fan will move the cool air off the floor and circulate it throughout your home, keeping it more comfortable.

Termination Cap (Flue)
Small, low profile termination cap goes on the exterior of the building.

Model 1773511 and 177512

Direct-Vent Safety

For Clean, Comfortable heat when and where you want it. The Gas flame is completely sealed inside, away from all contact with room air. Air necessary or combustion is drawn into the chamber form directly outside through the vent, and combustion products are vented directly to the outside. Only clean, gentle heat, in continuous circulation  is delivered into the room. Windows and doors stay closed because no room air is used for combustion. 


 Vent Adapter

The Vent Adapter Accessory is used to compensate for the extra space left around the vent hole when replacing a furnace with a larger vent opening. It can also be used to extend the flue terminal on homes with vinyl sidings so that vent cap will be flush against the edge of the siding. 


  • Any warranty considerations are contingent on installation by a qualified installer (contractor). Self-installation is prohibited and will invalidate your warranty.
  • Read owner’s manual before using/installing.
  • Photographs are representative.
  • Check local codes and ordinances for permitted uses.
  • Consult installation manual for clearances prior to installation.
  • We reserve the right to amend product specifications without notice.
  • Installation and servicing recommended by a qualified service person.
  • Venting must comply with the installation manual.
  • Massachusetts Approval G3-0115-271.
  • Please read the warranty for any limitations or disclaimers.
  • Combustion chamber carries a ten-year limited warranty. All other parts carry a one-year limited warranty.


Williams Furnace Locating and Replacing Orifice

 Williams Furnace Advanced Gas Heating Training


Safety Information : CA Prop 65 Warning