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Type
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Blower (5)
Electric Wall Furnace (2)
Gas Floor Furnace (3)
Gas Furnace (2)
Gas Wall Furnace (59)
Thermostat (1)
Heating BTU
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7000 - 16999 (10)
17000 - 26999 (11)
27000 - 36999 (24)
37000 - 46999 (16)
47000 - 56999 (23)
57000 - 66999 (18)
67000 - 76999 (6)
77000 - 86999 (6)
87000 - 96999 (6)
97000 - 106999 (2)
107000 - 116999 (2)
117000+ (2)
AFUE (%)
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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 - 59 (3)
64 - 65 (3)
66 - 67 (10)
68 - 69 (23)
70 - 71 (27)
72 - 73 (2)
74 - 75 (10)
76 - 77 (21)
78 - 79 (1)
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Available (7)
Multi-Speed (60)
PSC Multi-Speed (17)
Single Speed (13)
Vent Type
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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 (74)
Direct Vent (26)
Fuel Type
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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 (2)
Liquid Propane (49)
Natural Gas (51)
Product Line
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Direct-Vent (11)
Forsaire (36)
High-Efficiency Direct-Vent (4)
M (60)
Monterey (8)
Monterey PLUS (9)
Monterey PLUS+ (5)
Product Height (Inches)
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1 - 5 (8)
6 - 11 (66)
18 - 23 (5)
24 - 29 (27)
30 - 35 (22)
60 - 65 (17)
72 - 77 (12)
78 - 83 (9)
84 - 89 (12)
Product Width (Inches)
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1 - 3 (2)
4 - 7 (6)
8 - 11 (6)
12 - 15 (31)
16 - 19 (23)
20 - 23 (4)
24 - 27 (13)
28 - 31 (12)
32 - 35 (39)
40 - 43 (20)
48 - 51 (20)
Product Status
Available (97)
Discontinued (112)
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Williams High Altitude Conversion Kit - For Williams 1403822
Model: 8A141
(1)
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$109.00
Free Shipping
Factory-Direct!
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Williams Gas Conversion Kit - NG to LP - 55073 Series
Model: 7730
(1)
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$109.00
Free Shipping
Only 1 In-Stock
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Williams High Altitude Conversion Kit - For Williams 2001622A Room Heater
Model: 9A337
(1)
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$109.00
Free Shipping
Factory-Direct!
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Williams High Altitude Conversion Kit - For Williams 2001621A Room Heater
Model: 9A338
(1)
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$109.00
Free Shipping
Only 1 In-Stock
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Williams High Altitude Conversion Kit - For Williams 35k BTU Natural Gas Room Heaters
Model: 9A344
(1)
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$109.00
Free Shipping
In-Stock
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Williams High Altitude Conversion Kit - For Williams 50k BTU Propane Room Heaters
Model: 9A347
(1)
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$109.00
Free Shipping
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Williams High Altitude Conversion Kit - For Williams 65K BTU Propane Room Heaters
Model: 9A371
(1)
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$109.00
Free Shipping
Only 1 In-Stock
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Williams - Millivolt Thermostat
Model: P322016
(28)
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$39.00
Free Shipping
In-Stock
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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)
Offer Ends Sunday, March 31
2% Check Discount
$1,079.00
$1,025.05
Free Freight
Free Lift Gate
Only 3 In-Stock
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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)
Offer Ends Sunday, March 31
2% Check Discount
$1,247.00
$1,184.65
Free Freight
Free Lift Gate
Only 4 In-Stock
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Williams Monterey - 50,000 BTU - Gas Fired Wall Furnace - LP - 70% AFUE - Double Sided
Model: 5009621A
(8)
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Offer Ends Sunday, March 31
2% Check Discount
$1,259.00
$1,196.05
Free Freight
Free Lift Gate
Only 3 In-Stock
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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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Offer Ends Sunday, March 31
2% Check Discount
$2,999.00
$2,849.05
Free Freight
Free Lift Gate
Factory-Direct!
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Williams Forsaire - Rear Outlet Register - 1" Boot and Damper
Model: 6802
(3)
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$129.00
Free Shipping
In-Stock
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Williams High Altitude Conversion Kit - For Williams 3003822
Model: 8A143
(1)
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$109.00
Free Shipping
Only 2 In-Stock
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Williams Monterey - 50,000 BTU - Gas Fired Wall Furnace - NG - 70% AFUE - Double Sided (Scratch & Dent)
Model: 5009622A-SD
(1)
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$1,259.00
$944.25
Free Freight
Free Lift Gate
Only 1 In-Stock
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Williams Direct-Vent - Gravity Blower
Model: 2302
(7)
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$219.00
Free Shipping
In-Stock
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Williams Monterey PLUS+ - Top Vent Blower - 100 CFM
Model: 2901
(4)
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$175.00
Free Shipping
In-Stock
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Williams Monterey PLUS+ - Top Vent Blower - 125 CFM
Model: 2907
(2)
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$299.00
Free Shipping
Only 4 In-Stock
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Williams - Floor Board - Black
Model: 4167
(2)
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$109.00
Free Shipping
Only 3 In-Stock
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Williams Gas Conversion Kit - NG to LP - 350A Series Room Heaters
Model: 8946
(2)
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$109.00
Free Shipping
Only 1 In-Stock
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Williams High Altitude Conversion Kit - For Williams 3509821 & 3509621A
Model: 9A335
(2)
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$109.00
Free Shipping
Only 1 In-Stock
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Williams Monterey PLUS+ - Freestanding Kit - White
Model: 4901
(1)
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$269.00
Free Shipping
Only 4 In-Stock
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Williams Monterey PLUS+ - Rear Outlet Register
Model: 6901
(1)
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$109.00
Free Shipping
Only 1 In-Stock
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Williams Direct-Vent - Vent Cap Guard
Model: 9308
(1)
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$149.00
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Only 2 In-Stock
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