If you’re replacing your heating system in Denver, Aurora, or anywhere along the Front Range, you’re probably weighing two options: a traditional gas furnace or a heat pump. Both have real advantages in Colorado — and real limitations. Here’s an honest comparison from a company that installs both every week.

How each system works

A gas furnace burns natural gas to create heat. It only heats — you still need a separate AC for cooling. A heat pump moves heat using refrigerant, similar to an air conditioner running in reverse. It both heats and cools, replacing two systems with one.

Cost comparison

Here’s what Denver metro homeowners typically pay for installation:

Gas Furnace: $2,500–$7,000 installed (80%–98% AFUE)
Heat Pump: $4,500–$12,000 installed (standard air-source)
Dual Fuel (both): $6,000–$14,000 installed

Heat pumps cost more upfront, but you’re getting heating AND cooling in one unit. If your AC also needs replacing, the math changes significantly — a heat pump may actually cost less than buying a furnace plus a new AC separately.

The altitude question

Colorado’s elevation is the biggest factor most guides ignore. At 5,280 feet, gas furnaces need high-altitude combustion adjustments because there’s less oxygen. Without these adjustments, a furnace runs inefficiently and can produce dangerous carbon monoxide levels. Any HVAC company installing a furnace in Colorado should perform this calibration — if they don’t mention it, that’s a red flag.

Heat pumps aren’t affected by altitude in the same way — they don’t burn fuel. However, they do lose heating capacity in extreme cold. Modern cold-climate heat pumps can work effectively down to -15°F, but Denver regularly hits single digits in January and February.

The Colorado sweet spot: dual fuel

Many Denver homeowners are choosing dual fuel systems — a heat pump paired with a small gas furnace. The heat pump handles 80% of heating days efficiently, and the gas furnace kicks in during the coldest stretches. You get lower energy bills most of the year and reliable warmth when it’s 5°F outside.

Tax credits and rebates

This is where heat pumps pull ahead financially. Colorado homeowners may qualify for:

  • Federal tax credit: up to $2,000 for qualifying heat pump installations (25C/25D)
  • Colorado state credits: up to $1,000+ for energy-efficient heat pumps
  • Xcel Energy rebates: $400–$800 for qualifying equipment

Gas furnaces qualify for a smaller federal credit (up to $600 for 97%+ AFUE models) and some utility rebates, but the total is significantly less than heat pump incentives.

Our recommendation

For most Denver metro homes, we recommend a dual fuel system if budget allows, or a high-efficiency gas furnace (96%+ AFUE) if you’re keeping your existing AC. If your AC is also due for replacement, a heat pump makes strong financial sense — especially with current tax credits.

Every home is different. Square footage, insulation quality, ductwork condition, and your utility rates all affect the right choice. We provide free in-home assessments to help you decide.