Assertion: heat pump's system | /r/HasProperty | a fossil-fuel furnace
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text: For less moderate climates, installing a dual-fuel air source heat pump that works with a natural gas or propane furnace under a single control system can cost $2,500-$5,500 to install just the heat pump, or $5,000-$25,000 or more for a complete system that includes both the electric heat pump and a fossil-fuel furnace.
text: to install just the heat pump, or or more for a complete system that includes both the electric heat pump and a fossil-fuel furnace.