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FAQs

  • AC2030TN (Plug-In/No Battery) Troubleshooting
  • Which conversion kit do I need?
  • How to find the model & serial number on unit?
  • Can I repaint my furnace cover?
  • Can I purchase a new cover for my furnace?
  • What is the warranty?
  • Can you send me a brochure on your products?
  • What color is the furnace?
  • Where do I locate clearance and installation details?
  • Can “Vent-Free” heaters be installed in California?
  • Are your products approved for sale in Canada?
  • Does the blower increase efficiency?
  • What accessories are available for my Williams furnace?
  • Can the furnace be converted from LP to natural or natural to LP gas?
  • I have an older model furnace, where do I find a current model number?

Troubleshooting

  • Gravity Top Vent Limit Switch Tripping Troubleshooting Guide
  • Where do I locate troubleshooting information?
  • Which conversion kit do I need?
  • What is causing my Direct-Vent heater pilot to go out?
  • How do I light my pilot?
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How-To Videos

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  • How to Correctly Wire the Thermostat for Monterey Models
  • My Monterey wall furnace will not turn on, how do I get it working?

Types of Furnaces

  • What is a “Top-Vent” furnace?
  • What is a “Direct-Vent” furnace?
  • What is a “Gravity Vented” furnace?
  • What is a “Counterflow” furnace?
  • What is the difference between a central furnace and a Williams’ furnace?
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What is a “Direct-Vent” furnace?

Our “Direct-Vent” wall furnace requires installation on an exterior (outside) wall and must vent horizontally through the exterior/outside wall only. The direct-vent type of furnace draws outside air in from the vent tubes and returns the combustibles back through the vent to the outside. Direct-Vent furnaces work great in garages and bedrooms.

Direct-Vent Gravity Models include 1403821, 1403822, 2203821, 2203822, 3003621 and 3003622.

Direct-Vent Forsaire Counterflow Models include 4007732, 4007731, 6007732, 6007731, 4007332, 4007331, 5507332 and 5507331.

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