There are a few main things that a homeowner should consider when deciding what the best furnace brand is for their home, depending on what they value the most in a new heating unit. The major factors for most homeowners is the average cost for installation, energy efficiency (AFUE ratings), and the warranty offered on the HVAC unit. If you need to replace your entire HVAC system, you may also be interested in learning about the best air conditioner brands. The best furnace brands will provide the most reliable performance over time, and help you save on energy bills while keeping your house warm. Here is a roundup of some of the best furnace brands on the market today.