Heat Pump vs. Furnace in Colorado: How to Choose for Your Home

If your furnace is getting older, you’ve probably heard that you should replace it with a heat pump. Maybe a neighbor did it, or you saw the Xcel Energy rebates. You may also have heard that heat pumps can’t handle a Colorado winter.

The truth is somewhere in the middle. We install both heat pumps and furnaces across Broomfield and the Denver metro, and the right answer depends on your home, your ductwork and what matters most to you. Here’s how we help homeowners decide.

How a heat pump and a furnace heat your home

A gas furnace burns natural gas and blows the heat through your ducts. It puts out very hot air quickly, and its output doesn’t change with the weather.

A heat pump doesn’t burn anything. It moves heat from the outdoor air into your home, the same way your air conditioner moves heat out in the summer. Because it moves heat instead of making it, a heat pump can deliver two to three units of heat for every unit of electricity it uses in mild weather. It also replaces your air conditioner, so one system handles heating and cooling.

Can a heat pump keep up with a Colorado winter?

Today’s cold-climate heat pumps keep heating well below zero, which covers most Front Range winter nights. They do lose some capacity and efficiency as the temperature drops, so the key is sizing the system for your home’s actual heating load on the coldest days.

That’s why we start every replacement with a Manual J load calculation. It tells us exactly how much heat your home needs at our local design temperature, so we can choose a heat pump that keeps up, or plan backup heat if it won’t.

One thing to expect: a heat pump’s air feels warm, not hot. Instead of short blasts of very hot air, it runs longer and steadier. Most people find the house more even, but it is a different feel than a furnace.

What it costs to run

Whether a heat pump costs less to run than a gas furnace depends on your electric and gas rates, how efficient each system is and how cold the winter gets. In Colorado, natural gas has often been inexpensive, so the savings from switching vary from home to home.

If your air conditioner is also near the end of its life, the math often looks better, because one heat pump replaces both systems. We’ll compare the options for your home with real numbers instead of rules of thumb.

Your ductwork matters as much as the equipment

This is the part most quotes skip. Heat pumps usually need more airflow than the furnace your ducts were built for. If the ductwork is undersized, a new heat pump can be noisy, lose capacity and leave some rooms cold, no matter how good the equipment is.

Before we recommend a heat pump, we check static pressure and airflow. If the ducts need work, we design the fix with Manual D so the new system can actually deliver what it’s rated for.

Dual fuel: a heat pump and a furnace together

You don’t have to choose one. A dual-fuel system pairs a heat pump with a gas furnace. The heat pump handles heating for most of the season and all of your cooling, and the furnace takes over on the coldest nights.

For many Colorado homes, dual fuel is the sweet spot: lower gas use, a backup heat source, and the comfort of furnace heat when it’s below zero.

Rebates and incentives

Xcel Energy and the State of Colorado have offered incentives for qualifying heat pumps, and some cities and counties have their own programs. Amounts and rules change during the year, so we confirm what’s available when we quote your project and file the paperwork for you. See our rebates and financing page for more.

Which one is right for your home?

A heat pump is a strong fit if:

• Your air conditioner also needs replacing

• Your home is reasonably well insulated

• Your ductwork can handle the airflow, or you’re open to fixing it

• You want to cut gas use or qualify for heat pump rebates

A gas furnace still makes sense if:

• Your AC is newer and in good shape

• You want the hottest possible air at the registers

• Your home has a high heating load that a heat pump can’t meet without major upgrades

Dual fuel is often best if:

• You want heat pump efficiency most of the year with gas backup for cold snaps

• You’re replacing both your furnace and AC

Frequently asked questions

Do heat pumps work at Colorado’s altitude?

Yes. Like any equipment, heat pumps and furnaces deliver a bit less than their rated capacity at our elevation. We account for that when we select equipment after the load calculation.

Will I still need my furnace?

Not always. A properly sized cold-climate heat pump can heat many homes on its own, often with electric backup heat. If you want gas backup, a dual-fuel system keeps your furnace in the picture.

How long do heat pumps last?

Heat pumps typically last 10 to 15 years, a little less than many furnaces, because they run year-round for heating and cooling. Regular spring and fall maintenance helps them reach the long end of that range.

Get an honest recommendation

We’re a family-owned team in Broomfield, run by brothers who are third-generation HVAC technicians. We’ll measure your home, check your ductwork and show you the real trade-offs between a heat pump, a new furnace and dual fuel. Request an appointment or call (720) 649-0515.