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AFUE (%)
AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace.
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58 - 60 (3)
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Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
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Chimney Vent (48)
Direct Vent (41)
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Configuration
Orientation describes the direction that air will flow through a piece of equipment. (e.g. air will flow horizontally through a "Horizontal" unit heater.) Most equipment will only function properly if installed in the proper orientation.
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Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
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Electric (6)
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Modulating/Staging
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control.
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Modulating (3)
Single Stage (77)
Two Stage (9)
Product Status
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Discontinued (79)
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Williams High Altitude Conversion Kit for 2001622A Room Heater
Model: 9A337
(1)
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$110.00
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Williams High Altitude Conversion Kit for 2001621A Room Heater
Model: 9A338
(1)
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$110.00
Free Shipping
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Williams High Altitude Conversion Kit - For Williams 35k BTU Natural Gas Room Heaters
Model: 9A344
(1)
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$110.00
Free Shipping
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Williams High Altitude Conversion Kit - For Williams 50k BTU Propane Room Heaters
Model: 9A347
(1)
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$110.00
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Williams High Altitude Conversion Kit For Williams 6501521A
Model: 9A371
(1)
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$110.00
Free Shipping
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Williams Millivolt Thermostat
Model: P322016
(31)
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$37.00
Free Shipping
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Williams Monterey - 50,000 BTU - Gas Fired Wall Furnace - LP - 70% AFUE - Double Sided
Model: 5009621A
(10)
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2% Check Discount
$1,362.00
Free Freight
Free Lift Gate
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Williams Direct-Vent - 14K BTU - Gas Direct-Vent Wall Furnace - LP - 65% AFUE - Up To 2,000 Ft Altitude
Model: 1403821
(11)
Q&A
(1)
2% Check Discount
$1,116.00
Free Freight
Free Lift Gate
Factory-Direct!
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Williams Direct-Vent - 22K BTU - Gas Direct-Vent Wall Furnace - NG - 67% AFUE - Up To 2,000 Ft Altitude
Model: 2203822
(11)
Q&A
(1)
2% Check Discount
$1,341.00
Free Freight
Free Lift Gate
In-Stock
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Williams Monterey PLUS+ - Top Vent Blower - 100 CFM
Model: 2901
(5)
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$209.00
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Williams High-Efficiency Direct-Vent - 17,700 BTU - Gas Fired Furnace - LP - 76% AFUE - Single-Stage - Wall Mounted - Up To 5,500 Ft Altitude
Model: 1773511
(3)
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2% Check Discount
$2,231.00
Free Freight
Free Lift Gate
Only 1 In-Stock
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Williams Monterey PLUS+ - Top Vent Blower - 125 CFM
Model: 2907
(3)
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$322.00
Free Shipping
Only 4 In-Stock
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Williams Forsaire - Rear Outlet Register - 1" Boot and Damper
Model: 6802
(3)
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$123.00
Free Shipping
In-Stock
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Williams High Altitude Conversion Kit for 3003822 Series
Model: 8A143
(1)
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$110.00
Free Shipping
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Williams Direct-Vent - Gravity Blower
Model: 2302
(7)
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$264.00
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Williams - Floor Board - Black - 41"
Model: 4163
(2)
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$110.00
Free Shipping
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Williams - Floor Board - Black - 33"
Model: 4167
(2)
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$110.00
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Williams Forsaire - Two-Way Front Diffusing Grille - White
Model: 6703W
(2)
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$110.00
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Williams NG to LP Conversion Kit for 350A Series
Model: 8946
(2)
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$110.00
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Williams High Altitude Conversion Kit For Williams 3509821 & 3509621A
Model: 9A335
(2)
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$110.00
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Berko GFR - 1.5 kW - Fan-Forced Heater - Wall Heater - Double Pole Thermostat - 120V
Model: GFR1500T2F
(1)
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$361.00
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Berko HT Residential SmartSeries® - 2 kW - Programmable Wall Heater - 240V - Grey
Model: HT2024SS
(1)
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$619.00
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Berko FRA Commercial - 4.8 kW - Fan-Forced - Wall Heater - 208/240V
Model: FRA4824F
(1)
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$652.00
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Williams Solana™ - 31,400 BTU - Electric Wall Furnace - Single-Sided - 9.2 kW - White
Model: 3144030WG
(2)
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2% Check Discount
$1,333.00
Free Freight
Free Lift Gate
In-Stock
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