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  • Family-Owned Since 2005

Trusted Furnace & Air Conditioning Services in Littleton, CO

Reliable HVAC installation, repair, and maintenance backed by 25+ years of experience. Serving Littleton and nearby areas.
(303) 972-0263
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25+ Years of HVAC Experience

We bring decades of hands-on expertise in furnace and AC installation, repair, and maintenance across Colorado homes.

  • Fast & Reliable Repairs
  • Local, Family-Owned Business
  • Emergency HVAC Services Available
  • About Us

Comprehensive Heating & Cooling Services in Littleton, CO

At Duffey’s Heating & Air Conditioning, we offer complete HVAC solutions tailored to your home’s needs. From new furnace and air conditioner installations to fast, reliable repairs, our licensed technicians ensure your system runs efficiently year-round. We proudly install trusted brands like Amana and Goodman and service all major makes and models.

Regular maintenance is key to extending the life of your HVAC system and improving indoor comfort. Our team provides seasonal checkups, cleanings, and performance evaluations to keep your system in top shape—helping you avoid costly breakdowns and reduce energy bills. Whether you need emergency service or a routine tune-up, we’re just a call away.

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  • Our Services

Expert HVAC Services to Keep Your Home Comfortable

Duffey’s Heating & Air Conditioning provides dependable, energy-efficient heating and cooling services for homeowners in Littleton, CO, and surrounding areas. Our skilled technicians are ready to install, repair, and maintain your HVAC system with care and precision.
(303) 972-0263

Furnace Installation

Professional installation of high-efficiency furnaces sized for your home’s specific heating needs.

Air Conditioning Installation

Stay cool with properly sized AC systems from trusted brands like Amana and Goodman.

HVAC Repairs

Fast, affordable repair services for all major furnace and AC brands—no surprise costs.

Seasonal Maintenance

Extend system life and improve energy efficiency with routine HVAC checkups and cleanings.

Indoor Air Quality Solutions

Breathe easier with whole-home air filters, humidifiers, and smart thermostat options.

  • Why Choose Us

Why Homeowners Trust Duffey’s Heating & Air Conditioning

With a reputation built on honesty, quality, and decades of experience, Duffey’s is the go-to HVAC company in Littleton, CO. From emergency repairs to energy-efficient upgrades, we deliver comfort you can count on—year after year.

Skilled Technicians

Fast Response Times

Honest Pricing

Locally Owned

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Satisfaction Guarantee

  • Our Process

Our Simple 4-Step HVAC Service Process

Getting your home heating or cooling issue resolved is quick and hassle-free with our streamlined process.

Free Estimates on New Equipment

Get a no-cost estimate when you’re ready to upgrade your furnace or air conditioner. Contact us today to discuss new equipment installation options tailored to your home.

On-Site Assessment

We’ll evaluate your furnace or AC system and recommend the most effective solution—installation, repair, or maintenance.

Transparent Quote & Approval

You’ll receive a clear, upfront quote. No work begins until you fully understand and approve the cost.

Fast, Reliable Service

Our expert team completes the job quickly and efficiently—ensuring your home is comfortable again in no time.

Award-Winning

Serving Littleton, CO & Surrounding Communities with Trusted HVAC Solutions

Duffey’s Heating & Air Conditioning proudly serves homeowners in Littleton, Highlands Ranch, Lakewood, Centennial, and nearby areas. Whether you need a quick AC repair or a full furnace replacement, our local, family-owned team is here to deliver dependable, affordable comfort—backed by over 25 years of industry experience.
Amira K.
Amira K.
Duffey’s Heating & Air Conditioning was quick to respond when our furnace stopped working in the middle of winter. The technician explained everything clearly and gave us an honest price. We had heat back the same day. Highly recommend!
Sara .B
Sara .B
We recently replaced our old furnace with a new high-efficiency unit from Duffey’s. The team was professional, on time, and cleaned up after the job. Our home is much more comfortable, and our energy bill has already gone down.
Leo D.
Leo D.
When our AC broke during a heatwave, Duffey’s came out the same day. The repair was fast, affordable, and the technician was very knowledgeable. It’s great to work with a local, family-owned company you can trust.

Award-Winning

Comfort, Quality & Service You Can Count On

Experience reliable HVAC solutions delivered with honesty, care, and local expertise.

Expert Repairs

Skilled technicians ready to fix your heating and cooling systems fast.

Energy-Efficient Installs

We install high-performance HVAC systems built to save energy and money.

On-Time Appointments

Prompt, professional service that respects your schedule.

Local & Family-Owned

Proudly serving Littleton and nearby areas with trusted, neighborly care.

Faqs

Frequently Asked Questions

Have questions about your HVAC system or our services? We’ve got answers to help you stay informed and comfortable.
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