Dual-fuel means a heat pump and a gas or propane furnace share one set of ducts and one thermostat. Above a set outdoor temperature, called the balance point, the heat pump heats the house. Below it, the furnace takes over. The thermostat handles the switch automatically.
In Halden we usually set the balance point between 0°F and 15°F, depending on your gas and electric rates. At those settings the heat pump carries 70–85% of the season's heating, and the furnace handles the deep cold, when it's most efficient anyway.
It's also the most forgiving setup. If either system fails, the other one keeps you warm.
Signs you need this
- Your AC is due for replacement and the furnace has years left
- You want to cut gas use without going all-electric
- Your house is older and hard to heat on electric alone
- You want two sources of heat for peace of mind
How it works
Check the furnace
The heat pump coil sits on top of your furnace, so we confirm it's healthy and compatible.
Choose a balance point
Based on your utility rates. We explain the tradeoff in writing.
Install and program
Heat pump, coil, and a thermostat set up to switch automatically.
Common questions
Can I add a heat pump to my current furnace?
Usually yes, if the furnace has a variable-speed or multi-speed blower and is in good condition. We'll check.
Can I change the balance point later?
Yes, from the thermostat. If gas or electric rates change, we'll help you pick a new setting.
Does the furnace wear out faster?
The opposite. It runs far fewer hours each winter, so it tends to last longer.