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Downflow, 80% Efficiency Furnaces

These are low efficiency furnaces.  This means you will have higher gas bills using one of these furnaces than if you select a higher efficiency model.
  • Single-Stage Burner, Downflow, 80% Efficiency Furnaces
    • These furnaces have standard burners with one flame level. The flame is either on at full capacity, or it is off.
  • Two-Stage Burner, Downflow, 80% Efficiency Furnaces
    • These furnaces will operate on low flame, and then automatically increase to high-flame when more heat is needed. (A two-stage thermostat is required which allows you to determine when high-flame is engaged.)
    • The two stage burner will help maintain a more consistant temperature in your home, keeping your home at nearly the exact temperature you set your thermostat at.

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.