Heat Pump + Furnace Systems

A heat pump and furnace system — a dual-fuel system — pairs a Goodman heat pump outdoors with a gas furnace indoors. The heat pump carries the heating load in mild weather, where it is far cheaper than burning gas, and the furnace takes over automatically when outdoor temperatures drop below the balance point. In summer the heat pump cools like any air conditioner. It costs more up front than an AC-plus-furnace system and pays that back in climates with cold snaps and long shoulder seasons.

Every dual-fuel heat pump and furnace system on this page is sold as an AHRI-certified matched pair — the components are factory-rated together, so the efficiency on the label is the efficiency you get — and ships free from our Winder, Georgia warehouse. 1,078 combinations are listed; the quickest way through them is by size.

Heat Pump + Furnace Systems by size

1.5 ton dual-fuel heat pump and furnace systems

A 1.5-ton system delivers 18,000 BTU/h of cooling — roughly 600 to 900 square feet in a moderate climate as a rule of thumb, before a load calculation. 192 1.5-ton combinations are in stock; typical starting points: Goodman 1.5 Ton 14.5 SEER2 Heat Pump + 40k 80% furnace · Goodman 1.5 Ton 15.2 SEER2 Heat Pump + 60k 80% furnace · Goodman 1.5 Ton 14.5 SEER2 Heat Pump + 60k 96% furnace · Goodman 1.5 Ton 15.2 SEER2 Heat Pump + 60k 96% furnace.

2 ton dual-fuel heat pump and furnace systems

A 2-ton system delivers 24,000 BTU/h of cooling — roughly 900 to 1,200 square feet in a moderate climate as a rule of thumb, before a load calculation. 372 2-ton combinations are in stock; typical starting points: Goodman 2 Ton 14.5 SEER2 Heat Pump + 40k 80% furnace · Goodman 2 Ton 15.2 SEER2 Heat Pump + 60k 80% furnace · Goodman 2 Ton 14.3 SEER2 Heat Pump + 40k 96% furnace · Goodman 2 Ton 15.2 SEER2 Heat Pump + 80k 96% furnace.

2.5 ton dual-fuel heat pump and furnace systems

A 2.5-ton system delivers 30,000 BTU/h of cooling — roughly 1,200 to 1,500 square feet in a moderate climate as a rule of thumb, before a load calculation. 270 2.5-ton combinations are in stock; typical starting points: Goodman 2.5 Ton 14.5 SEER2 Heat Pump + 60k 80% furnace · Goodman 2.5 Ton 15.2 SEER2 Heat Pump + 80k 80% furnace · Goodman 2.5 Ton 14.3 SEER2 Heat Pump + 60k 96% furnace · Goodman 2.5 Ton 15.2 SEER2 Heat Pump + 80k 96% furnace.

3 ton dual-fuel heat pump and furnace systems

A 3-ton system delivers 36,000 BTU/h of cooling — roughly 1,500 to 1,800 square feet in a moderate climate as a rule of thumb, before a load calculation. 161 3-ton combinations are in stock; typical starting points: Goodman 3 Ton 15.2 SEER2 Heat Pump + 60k 80% furnace · Goodman 3 Ton 15.2 SEER2 Heat Pump + 80k 96% furnace.

3.5 ton dual-fuel heat pump and furnace systems

A 3.5-ton system delivers 42,000 BTU/h of cooling — roughly 1,800 to 2,100 square feet in a moderate climate as a rule of thumb, before a load calculation. 83 3.5-ton combinations are in stock; typical starting points: Goodman 3.5 Ton 15.2 SEER2 Heat Pump + 80k 80% furnace · Goodman 3.5 Ton 14.5 SEER2 Heat Pump + 80k 96% furnace · Goodman 3.5 Ton 15.2 SEER2 Heat Pump + 80k 96% furnace.

How to choose a dual-fuel heat pump and furnace system

• Tonnage from a load calculation — use our sizing tool as a starting point.
• Furnace input and AFUE: 80%, 92%, 96% AFUE furnaces in this group. The furnace only runs below the balance point, so an 80% furnace is often the sensible choice in a dual-fuel setup.
• Dual-fuel thermostat (or fossil-fuel kit) to manage the changeover.
• SEER2: 14.3 to 15.2 SEER2 across this group.

What ships with a complete system

The components listed on each product page — the outdoor unit, the indoor coil, air handler or furnace — and nothing else. Line set, thermostat, equipment pad, disconnect and any electric heat kit are sold separately, and installation is licensed-contractor work (R-32 is an A2L refrigerant). Goodman residential equipment carries a 10-Year Parts Limited Warranty when registered within 60 days of installation. Not sure which combination fits your house? Call (877) 843-4822 and we will check the load, the duct layout and the accessories before you order. Financing through Affirm is available at checkout, and you can read what customers say on our reviews page.

Related system types

Air Conditioner + Air Handler Systems · Air Conditioner + Coil Systems · Air Conditioner + Furnace Systems · Heat Pump + Air Handler Systems · all Goodman equipment

Heat Pump + Furnace Systems FAQ

What is dual fuel?

A heat pump for mild weather and a gas furnace for cold weather, switched automatically at the balance point. It is the lowest-cost way to heat in a climate with real winters and long shoulder seasons.

Do I need a special thermostat?

Yes — a dual-fuel-capable thermostat (or a fossil-fuel kit) manages the handoff between heat pump and furnace.