This high efficiency unit provides high comfort heating. The noiseless operation of this furnace does not compromise its performance. It features a low-speed fan to give you continuous and consistent flow of warm air. This furnace is energy efficient, with AFUE rating of 92 percent, allowing you to save a lot from your utility bill. Buying this furnace gives you a chance to avail of tax credit or rebate from the government, manufacturers or retailers. This furnace comes with a limited warranty on heat exchanger and covered components if you buy this at huskyair.com.

Dave Lennox Elite G61V Variable Speed Gas Furnace:

This furnace is known for its quiet operation. Thanks to its SilentComfort technology which provides the ultimate noiseless operation and consistent heating. It features a fully insulated cabinet with sound-absorbing insulation, enhanced humidity control, low-speed fan and variable speed operation. This furnace is a good choice as replacement as it has 95 percent AFUE rating and Energy Star qualification. Check out this furnace at huskyair.com.

G43 Gas Furnace:

This economical furnace provides a highly efficient gas heating capacity. It features a secondary heat exchanger which allows the unit to achieve a high efficiency level by capturing and releasing additional heat. Its energy efficiency rating is 92 percent. It has dual-fuel capability which means you can combine this unit with electric heat pumps if you want to enhance fuel efficiency and comfort. This furnace is part of the Merit Series which is available at lennox.com.

G40 Gas Furnace:

This furnace with efficiency rating of 80 percent is perfect for residential applications. It features the Duralok Plus heat exchanger which is made of ArmourRuf aluminized steel and hot surface igniter. The dual-fuel capacity of this furnace allows you to alternate between gas heat and electric. The heat exchanger of this furnace comes with a 20-year limited warranty while the covered components have a 5-year warranty. Visit lennox.com for more details.

G71MPP Variable-Capacity Gas Furnace--Dave Lennox Signature® Collection:

Quiet, efficient and consistent heat are just some of the benefits you can get if you install this furnace. It features the SilentComfort technology, a blower motor with variable speed, fully insulated cabinet to further reduce noise to an industry-standard low level and Precise Comfort technology. It also comes with secondary heat exchanger to allow the unit to achieve a high level of efficiency. If you want to know more about this product, visit lennox.com.

Lennox LGB240SH:

This furnace uses natural gas as its fuel source. It has a steady state efficiency of 80.6 percent. It comes with a down air flow configuration and triple electrical phase. Because this unit is noncondensing, it is less efficient compared with a condensing furnace when it comes to extracting heat from exhaust gases. It is therefore recommended that this furnace be vented on a chimney. This unit sells under model number LGB240SH at furnacecompare.com.

You can find more Lennox furnaces and other contemporary furnaces on the Internet. Some come with eco friendly or green features, making them preferred choices by people who want to protect the environment.