In a rush? Call us 844-262-5082

Updated on

Lennox GCS16 Furnace Overview

The LENNOX GCS16 is a natural gas-burning warm air furnace with an efficiency that ranges from 78.2 – 81% AFUE.

Furnace Filters for the Lennox GCS16

Air Flow Configuration Cabinet Width Filter Size(s)
Downflow / Horizontal 17.5″ 16x25x1
Downflow / Horizontal 21″ 20x25x1

Questions about this model?

Read more about Lennox Furnaces

Read Reviews of Other Lennox Products

Find ratings and reviews for Lennox Air Conditioners, Boilers and more

Read Reviews

Top 10 Furnaces

See who made our list of the best Furnaces of 2020.

See the Top Products

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.

Other GCS16 Reviews

Lennox GCS16 Model Numbers

The GCS16 is available in different models which vary in efficiency and capacity.

Model Number AFUE BTUs per Hour
GCS16-060-120* 80 120,000
GCS16-1353-270* 0 270,000
GCS16-1603-270* 0 270,000
GCS16-413-100* 81 100,000
GCS16-513-125* 78.5 125,000
GCS16-653-125* 78.5 125,000
GCS16-953-200* 78.2 200,000

GCS16 Warranty

Best Heating & Cooling Products

See ratings and reviews for the best in furnaces, air conditioners, heat pumps, boilers and more.

Air Conditioners Air Conditioners Heat Pumps Heat Pumps Furnaces Furnaces

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
View All HVAC Brands

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

By entering your phone number and clicking the "Submit" button below, I agree to the following:

  • www.furnacecompare.com's Privacy Policy and Terms of Use.

  • I am providing my prior express written consent to share my information with FurnaceCompare.com's, Networx and, and Networx’s authorized parties calling on their behalf, to deliver calls or text messages to my phone number provided above, for the purpose of home improvement requests & contractor bids, using an automated telephone dialing system or an artificial or prerecorded voice. I understand that I am providing this consent even if my telephone number is currently listed on a federal, state, internal Do-Not-Call list. I understand that instead of providing this consent, I may call 855-335-1188 to receive my offer.

  • I understand that I do not have to agree to receive these types of calls or text messages as a condition for purchasing any goods or services.

HVAC Trusted Dealers

  • Trane U.S. Inc.
  • American Standard Heating & Air Conditioning