Shop
  • Deals
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.
TermsPrivacy
BrowseBrowse deal.ai
Deal.ai › Williams
Williams
Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas

Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas

3.9(70 ratings)

Best price now

$1,714.00at Online SupplyObserved at 8:43 AM

Prices are checked against each store and labelled with when.

Visit Online Supply

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Our take on the Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas

The Williams Forsaire is a liquid-propane, direct-vent wall furnace rated at 35,000 BTU/hr input and 32,000 BTU/hr output, enough for roughly 940 square feet. It uses fan-forced counterflow air and electronic ignition, and its tall 77-inch cabinet mounts between wall studs. Efficiency is about 80%, so it is a basic furnace rather than a high-efficiency condensing unit. The best new price is $1,714 at Online Supply as of November 7, 2026, and only one store lists it new, so there is no meaningful price spread to compare against.

Best forHeating a small home, cabin or addition without ductworkRooms where a propane supply is already availableReplacing an existing top-vent wall furnace in the same openingOff-grid or rural homes that need a vented, non-electric heat source beyond igni
Pros
  • Direct vent pulls combustion air from outside and exhausts through the wall
  • 32,000 BTU/hr output covers about 940 square feet
  • Electronic ignition avoids a standing pilot light
  • Counterflow fan pushes warm air down and out at floor level
  • Steel cabinet with CSA certification
  • Top vent suits replacement of many existing wall furnaces
Cons
  • About 80% efficient, so more heat goes up the flue than with a condensing furnace
  • Runs on liquid propane only, not natural gas
  • Needs a 120 V outlet for ignition and the blower
  • 116 lbs and 77 inches tall, so installation is a two-person job
  • Only one store lists it new, which limits price comparison

Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas prices at every store

  • Online SupplyNew

    In stock

    $1,714.00Observed at 8:43 AM
    Visit Online Supply

Also available at

  • HVACDirect.comCheck price at HVACDirect.com
  • ArborCheck price at Arbor
  • US Fireplace StoreCheck price at US Fireplace Store

Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas price history

Lowest price we've seen: $1,167.99 on Nov 7 at Arbor. Tracked across 5 stores since Nov 7.

What reviewers say

  • 3.9 / 570 ratings

Ratings average 3.9 out of 5 from 70 buyers. Owners of this Forsaire line generally report strong heat output and reliable operation, while complaints center on blower noise and installation effort.

What people mention
  • Heat outputPraisedOwners say it warms a small house or cabin quickly even in hard cold.
  • Blower noiseCriticisedSeveral buyers find the fan louder than expected in a bedroom or living area.
  • InstallationMixedOwners describe a straightforward vent job but a heavy unit that needs two people and a careful wall opening.
  • DurabilityPraisedLong-term owners report the furnace lasting many seasons with little service.
  • Build qualityMixedSome units arrived with bent panels or missing hardware, though most report solid steel construction.

Specifications

Venting Type
Direct Vent
Device Type
Furnace
System Type
HVAC system
Energy Efficiency Rating
80% Efficiency
Coverage Area
940 sq ft
Capacity
32,000 BtuH (output)
Airflow
325 cfm

Questions and answers

Is this furnace propane or natural gas?
It is liquid propane only. Williams sells separate natural-gas versions of the Forsaire, so check the model number before ordering.
How much space will it heat?
The rated coverage is about 940 square feet with 32,000 BTU/hr output. In a leaky or poorly insulated space, expect less.
Does it need electricity?
Yes. Electronic ignition and the counterflow blower run on 120 V AC, so it will not heat during a power outage.
Can it replace my old wall furnace?
It fits many standard top-vent wall openings, but the vent and gas line must match. Have an installer confirm the rough opening and venting before buying.
What is in the box?
The furnace and its venting components for the wall kit, depending on the listing. Thermostat, gas piping and electrical connections are usually supplied by the installer.
When is the price lowest?
With only one store listing it new at $1,714 as of November 7, 2026, there is little price competition. Watch for seasonal HVAC sales in early fall before heating season.
Where is the Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas cheapest?
At Online Supply, for $1,714.00, as of our latest check.
What do buyers say about the Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas?
Rated 3.9 out of 5 from 70 ratings.
Where can I buy the Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas?
4 stores we checked sell it, including Online Supply, HVACDirect.com, Arbor, US Fireplace Store.

Stores we've priced the Williams Forsaire 35,000 BTU/hr Counterflow Top-Vent Wall Furnace Liquid Propane Gas at

  • Arbor deals and prices

More from Williams

  • W
    Williams Legato IV 88-Key Digital Piano with Bluetooth Sustain Pedal
    Williams Legato IV 88-Key Digital Piano with Bluetooth Sustain Pedal
  • W
    Williams Forsaire Gas Top-Vent Wall Furnace
    Williams Forsaire Gas Top-Vent Wall Furnace
All Williams deals and products →
Pressure Rating
11 in (Inlet Gas Pressure (Water Column))
Heating Type
Fan Forced Convection
Depth
11-3/4 in
Height
77-3/8 in
Width
14-1/8 in
Weight
116 lbs
Installation Type
Wall-mounted
Mounting Type
Wall
Voltage
120 V AC
Power Source
Electric (ignition)
Housing Material
Steel
Material
Steel (housing)
Wireless Connectivity
No
Typical Users
UNISEX, ADULT
Certifications
CSA