🎉 Up to 70% Off Selected ItemsShop Sale

Home Shop Cart Account

Store

Best 40,000 BTU Gas Furnaces

Filter products by category, price, and more

The Furnace Out

Subscribe to our newsletter for exclusive offers, new arrivals, and style inspiration.

Shop

All Products
New Arrivals
Sale

Company

Shipping Info
FAQ
Contact Us

About

About Us
Returns
Privacy

© 2026 The Furnace Out. All rights reserved.

-70%NEW

40,000 BTU 80% AFUE Downflow/Horizontal Single Stage Goodman Gas Furnace - GD9S800403AN

$1,198.00

$359.40

New70% OFF

-70%NEW

40,000 BTU 80% AFUE Upflow/Horizontal Single Stage Goodman Gas Furnace - GR9S800403AN

$1,152.00

$345.60

New70% OFF

-70%NEW

40,000 BTU 96% AFUE Downflow/Horizontal Single Stage Goodman Gas Furnace - GD9S960403BN

$1,870.00

$561.00

New70% OFF

-70%NEW

40,000 BTU 96% AFUE Upflow/Horizontal Single Stage Goodman Gas Furnace - GR9S960403AN

$1,761.00

$528.30

New70% OFF

NEW

40,000 BTU 80% AFUE Upflow/Horizontal Single Stage Ultra Low NOx Goodman Gas Furnace - GR9S800403AU

$1,813.00

New0% OFF