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What Is the Best Furnace Brand in 2021?

Winter is coming… If you’re due to install or replace your home furnace, then here’s your chance to buy one that gives you lasting value.

When comparing the top furnace brands, there are numerous factors to take into account:

  • Energy efficiency. The minimum acceptable AFUE (annual fuel utilization efficiency) rating for a new furnace is around 80%, although the best furnace and AC brands offer 90-99% energy efficiency. The AFUE rating tells you how much of the fuel used by the furnace actually turns into heat, e.g. 96% efficiency means you get 96c of heat for every $1 spent.
  • Quality & Reliability. If you’re going to invest thousands of dollars in a new furnace, then you want to be sure you’re getting the best. Some brands have a reputation for reliability and some don’t, so it’s worth checking customer feedback beforehand.
  • Warranty. The top furnace brands offer 10-year warranty on parts and lifetime or 20-year warranty on the heat exchanger.
  • Price. A new gas furnace can cost anywhere from $1,500-$5,000+ for purchase and installation. You can find furnaces for under $1,000 if you purchase without installation.

There are dozens upon dozens of home furnace brands on the market. To help narrow your search, we present this list of the 10 best furnace brands in 2021. 

1. American Standard – Our Best Overall Furnace Brand

American Standard is one of the biggest names in heating and cooling products. When you purchase an American Standard furnace, you know you’re getting a product that’s built to last–with an average shelf-life of 15-20 years. American Standard has 14 gas furnaces with AFUE ratings from 80% to 97.3%. Whatever you’re looking for–whether it's a single-stage or two stage (for different settings on cold and mild days), large or small, or efficient or quiet–American Standard, has all types of furnaces.

2. Lennox – Most-Efficient Furnaces

Lennox’s Signature Collection SLP99V variable-capacity gas furnace is the most efficient product on the market, with a 99% AFUE rating. Lennox has several other Energy Star-certified two-stage gas furnaces with energy ratings above 96%, some of them with built-in Power Saver technology. Overall Lennox has 23 models with varying selling points–including being reliable and economical.

3. Bryant – Quietest Furnaces

Bryant earns a place on our list of the best gas furnace brands due to how quiet its products are. It has 13 furnaces with AFUE ratings ranging from 80% to 98.3% and a choice of single-stage, two-stage, and modulating configurations. Aside from ultra-quiet performance, other features include consistent airflow and enhanced summer humidity control. Bryant is a part of the United Technology Corp group of companies, which also includes Carrier, Payne, and Heil.

4. Rheem – Best Furnace Brand for Maintenance