Heat Pumps vs. Gas Furnaces
Choosing the Right Heating Solution for Your South Denver Home

If you’re evaluating a new heating system, you’ve likely asked the same question many South Denver homeowners are asking today: Should I install a heat pump or stick with a gas furnace? The right answer depends on your home, comfort goals, and long-term energy priorities.
Since 1973, Southwest Heating & Cooling has been the trusted HVAC partner for homeowners in Littleton, Highlands Ranch, Centennial, Castle Rock, Lakewood, and throughout the entire South Denver Metro area. With more than 50 years of local expertise and a customer-first approach, we help homeowners understand the real-world differences between heat pumps and gas furnaces—so they can choose confidently.
The Core Difference: How They Heat Your Home
Gas Furnaces
Gas furnaces create heat by burning natural gas and distributing warm air through ductwork. They’ve been a common choice in Colorado for decades and can deliver strong heat during cold weather.
Heat Pumps
Heat pumps don’t create heat—they move heat. In winter, a heat pump extracts warmth from the outdoor air and transfers it inside. In summer, it reverses direction to provide cooling. This makes heat pumps complete heating and cooling systems, not just an alternative to air conditioning.
Performance in Colorado’s Climate
Modern cold-climate heat pumps are specifically designed to perform in freezing temperatures, making them a reliable option for South Denver winters. When properly selected and installed, they deliver steady, efficient heat during most winter conditions.
Some homeowners choose a hybrid or dual-fuel system, combining a heat pump with a gas furnace. This approach allows the heat pump to handle everyday heating and cooling, while the furnace provides backup during extreme cold.
Comparing Heat Pumps and Gas Furnaces
Energy Efficiency
Heat pumps are among the most energy-efficient HVAC systems available. Because they transfer heat instead of generating it, they often use significantly less energy than gas furnaces.
Heating and Cooling
Gas furnaces only heat. Heat pumps provide both heating and cooling in one system, potentially replacing both your furnace and air conditioner.
Operating Costs
Many homeowners see lower overall energy costs with heat pumps, especially when replacing older, inefficient systems.
Environmental Impact
Heat pumps reduce reliance on fossil fuels and can be paired with renewable electricity, supporting a cleaner energy future.
Installation Flexibility
Heat pumps work with ducted systems, ductless mini-splits, and hybrid configurations—making them suitable for a wide range of homes.
Rebates, Tax Credits & Financing Made Simple
One of the biggest advantages of upgrading to a heat pump is the availability of rebates.
Many homeowners can significantly reduce upfront costs by combining:
We handle the entire rebate process for you.
From identifying eligible programs to completing and submitting paperwork, our team makes it easy to maximize your savings without added stress.
Contact Us
Why Homeowners Have Trusted Us Since 1973
Serving South Denver for over 50 years
Deep knowledge of Colorado homes and climate
Customer-first service—not sales-driven pressure
Expertise in heat pump and high-efficiency systems
Trusted by generations of local homeowners
Our longevity is built on consistency, integrity, and quality work—year after year.
We Proudly Serve Littleton, Highlands Ranch, Centennial, Castle Rock, Lakewood, and All Surrounding South Denver Communities.
Heat Pumps vs. Gas Furnaces FAQs
Are heat pumps reliable during Colorado winters?
Yes. Cold-climate heat pumps are designed to deliver efficient heating in freezing temperatures when properly sized and installed.
Is a heat pump cheaper to run than a gas furnace?
In many cases, yes—especially when replacing older systems that are less efficient.
Are rebates still available for heat pumps?
Yes. Many systems qualify for rebates, and we help guide you through the process.
Is financing available?
Yes. Flexible financing options are available to help make upgrading more affordable.
Get Expert Guidance for Your Home
Choosing between a heat pump and a gas furnace doesn’t have to be complicated. With decades of experience and a customer-first philosophy, Southwest Heating & Cooling helps South Denver homeowners make informed, confident decisions.
Contact us today to schedule your consultation and find out whether a heat pump or gas furnace is the best choice for your South Denver home.
What Your Neighbors Are Saying About Us
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Karen Squire5 days agoTrustindex verifies that the original source of the review is Google.
Very friendly and helpful. Answered all questions thoroughly.Posted on Google![]()
Terri Terry6 days agoTrustindex verifies that the original source of the review is Google.
Joe was great, explained what needed to be done and completed the work in a timely manner. He is always professional.Posted on Google![]()
Alexandra H. Band12 days agoTrustindex verifies that the original source of the review is Google.
Southwest Heating & Cooling actually CARES. They came out on exceedingly short notice today and quite literally helped save a real estate deal for me. Mike was spot on with his diagnosis based on a text and pictures, and he made sure Joe arrived with the necessary part in hand and ready to install. Joe got the issue taken care of quickly, and what could have become a major last-minute problem was resolved. As a Realtor, having vendors who are responsive, knowledgeable and willing to jump in when timing really matters is invaluable. Mike and Joe went above and beyond for me and my clients today, and I could not be more appreciative. Highly recommend Southwest Heating & Cooling.Posted on Google![]()
Edward Stephenson13 days agoTrustindex verifies that the original source of the review is Google.
I am selling a condo that the buyers used an inspector from hell.Southwest installed the system two years ago so I asked them to provide an inspection by an authorized technician. The buyers tortured me with stupid questions about various components of the system. I had to pester Joe my Technician and Lisa the office manager with picayune questions and details. They very patiently and professionally helped me every step of the way.Posted on Google![]()
Mark Norris21 days agoTrustindex verifies that the original source of the review is Google.
Rony and the entire team were great to work with, as they are professional, knowledgeable, polite and efficient. As a retired builder, I highly recommend Rony and all the Southwest team !!Posted on Google![]()
michael haley23 days agoTrustindex verifies that the original source of the review is Google.
They didn’t change my filter which is what I thought was part of the maintenance cost. Now I gotta go buy one and do it myself. Attention to detail lacking.Posted on Google![]()
Alex Walker37 days agoTrustindex verifies that the original source of the review is Google.
Wonderful experience with the whole team at SW Heating and Cooling. Fair pricing. Helped troubleshoot issues on site and solved them in real time. Installation of the new system was an easy experience with high quality equipment and labor. These guys knew what they were doing.+0Posted on Google![]()
John Schultz38 days agoTrustindex verifies that the original source of the review is Google.
Exceptional Service ! Southwest Heating & cooling recently installed a new central A/C unit at mother’s home. She is 92 y/o with compromised health. Mike & Lisa went above and beyond in securing the AC unit & getting it installed promptly. They were thorough and timely. They were extremely kind and gentle with Mom. All communications were clear, concise and timely. 5 stars. Best of the Best ⭐️⭐️⭐️⭐️⭐️Posted on Google![]()
Roxanne Ahlbrecht38 days agoTrustindex verifies that the original source of the review is Google.
Joe was on time, respectful of our home, and easy to understand. He explained what the repair entailed, and gave me a couple of options. He was very knowledgeable. Overall, great experience!!!Posted on Google![]()
Fritz Parsons41 days agoTrustindex verifies that the original source of the review is Google.
Jonas and Joey did a great job installing a heat pump with backup furnace. The installation took two full days, in part because we didn't already have an air conditioner. Throughout the process, they worked hard without breaks while being extremely courteous. They took the time to answer all my "stupid user" questions, and also answered many questions I didn't think to ask. My basement and garage are cleaner now than before they came.