Power Vented Furnaces

Furnaces and boilers can be “natural draft” or “power vented“. In a “natural draft” furnace a chimney creates suction and pulls hot gases through the furnace’s heat exchanger. However, if you don’t have a chimney you need to use a fan to pull those gases through the furnace and out of the building — such a furnace is called a “power vented” furnace.

There are two types of power-vented furnaces: induced draft and forced draft.

Advantages

Power-vented furnaces can vent directly outside through a side wall — as you might guess, if you don’t have a chimney, this is a very useful feature. Power vented furnaces also tend to be a bit more efficient than natural draft furnaces, as the fan can regulate the optimum amount of gases pulled through the heat exchanger.

Disadvantages

Power-vented furnaces tend to be a bit more expensive than natural draft models. Some homeowners have complained that side-vented furnaces can leave yellowish or gray stains on white siding.

Find a Certified Heating & Cooling Professional In Your Area

Contact a top-rated local expert to help with all of your home’s HVAC needs.

HVAC Brands

Learn more about your home's heating and cooling system with our guides, how-to's, FAQ's, tips and more.


Trane American Standard Lennox Carrier Goodman

Ready to get a quote from an HVAC contractor?

Let us know what type of service you need and we can connect you with a certified local HVAC contractor.

Please enter a valid name

Please enter a valid phone number

Please enter a valid zip code

There are no dealers in this zip code.

Please enter a valid email address

Please select repair or replace

Please select heating, cooling or both