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Williams Direct Vent Gas Heater Information
(for Williams propane and natural gas heaters)

Back to Williams Direct Vent Pricing Page

Williams direct vent greenhouse
1403822 heater mounted in a greenhouse
Williams direct vent heater
View from outside of greenhouse

Versatility
Williams direct vent heaters are very versatile gas heaters. They are slim and taking up a very small amount of room, do not require electricity to run, are easy to vent (venting included), and can be controlled remotely by a wall thermostat (included with heater). Included wall thermostat has a range of 50 to 90 F and an on/off switch. williams gas heaters
Efficiency
With a direct-vent system, there is a positive difference in fuel economy because outside air is used to support combustion. The air on the inside is warmed as it recirculates around a sealed chamber. This warm air comfortably heats the room cleanly and efficiently.
Easy of Installation
Williams direct vent wall heaters are ideal where existing flues or chimneys cannot be used. Just one hole through an outside wall is all you need. If you must vent, you will receive maximum fuel economy from direct-vent heaters.
Ignition
A push of the button ignites the pilot with a "matchless" piezo system. Add an optional internal blower for even greater circulation.
Safety
Safety is engineered into every Williams gas heater. Each unit contains an automatic shut-off valve should the pilot light become extinguished, and Williams' quality control procedures ensure that every heater is a top performer before it goes into your home.
Durability
Williams leads the field in style and durability. We use a state-of-the-art powder coating that produces a strong finish that resists scratching and chipping.
Quiet
Williams' secret to quieter operation is our uniquely designed burner. As gas enters the burner port, it is ignited immediately, which eliminates delayed ignition noise and gives you quieter operation.
Appearance
Williams is the only heater of its kind that features an attactive two-tone finish that blends in with most any environment. The simple direct vent cap on the exterior of your home projects only 6 inches. And, with the optional thin-wall collar kit, installation on virtually any type of structure is possible.

Additional Williams Gas Heater Information
Download the Williams Installation Manual

Performance
     
Model # 1403822
1403821
2203822
2203821
3003822
3003821
BTU Input 14,000 22,000 30,000
BTU Output 10,039 16,462 21,849
Dimensions (in.)
     
Width 18 32 1/8 32 1/8
Depth 7 1/8 10 1/8 10 1/8
Height 26 3/4 28 28
Weight (lbs) 48 88 90
Gas Connection 1/2 1/2 1/2
Venting (in.)      
Min. Length 4 1/2 4 1/2 4 1/2
Max. Wall Thickness
(vent extensions up to 24" available)
9 9 9
Pipe Size 6 1/4 6 1/4 7 1/2
Clearance to Combustibles (in.)      
Top 18 24 24
Each Side 2 2 2
Bottom 1 3/16 5 1/2 5 1/2
Accessory Information      
Blower CFM 125 135 135
*It is recommended that all gas heaters be installed by a qualified installation and service contractor.
*Ratings shown are for elevations up to 2,000 feet above sea level. For elevations above 2,000 ft., ratings should be reduced by approximately 4% for each 1,000 ft. above sea level.

Williams Heater Zone Chart
Williams Gas Heater Chart
Williams Heater Room Sizing Chart for In-Home Use
For Greenhouses, use our Greenhouse Heater Size Calculator .
BTU Input 14,000 22,000 30,000
Zones Square Feet (Based on Ceiling Height of 8')
3 435 720 980
5 260 430 590
7 185 310 420
9 145 240 330
This chart is to be used for homes and as a guide only. Chart assumes areas are insulated.
Additional heat may be required at high altitudes. If you have a single room
with 4 exterior walls, additional heat may be required.

Williams Direct Vent Heater


Williams Heater Ordering Options

Heater Gas Type
This option allows you to select the type of fuel you want the heater setup for.
Options include propane and natural gas.

Heater Elevation
If you live at an elevation above 4000', Williams heaters need to be equipped for high altitude. High altitude heaters are built to order and shipped direct from Williams. The average ship time is 1 to 2 weeks, and there is an additional $79 charge.
Options explained
Below 4000' - Select this option if your elevation is below 4000'    
4 - 6000' - Select this option if your elevation is between 4000'
and 6000'
6 - 8000' - Select this option if your elevation is between 6000' and 8000'


Back to Williams Direct Vent Pricing Page


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Buffalo Junction, VA 24529
434-374-2706 Phone, 434-374-2055 Fax
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