Click to Call Now 720-594-2764
Schedule Now

Littleton, CO
HVAC Services

Taking care of your heating and cooling needs since 1977.

Schedule An Appointment

  • Hidden
  • Hidden
  • Hidden
  • This field is for validation purposes and should be left unchanged.
google


4.8/5 | 1,513 Reviews
Read Reviews

angi


4.8/5 | 207 Votes
Read Reviews

home advisor


4.8/5 | 122 Reviews
Read Reviews

Common HVAC questions from Littleton homeowners

HVAC Financing

Need a new HVAC system? Convenient payments to give you budget flexibility and the right heating and air conditioning solution for your home. Financing is subject to approved credit.
Learn More

Family Membership

What’s better than being part of a family? As a member of the Sanders and Johnson family, you’ll enjoy priority service, hassle-free maintenance, and more.
Learn More

Trusted, Award-Winning Air Conditioning and Heating Services

Customer Education

Our team prefers to educate our customers in a thoughtful way, so you receive the most accurate solution. All services are tailored to your needs without any upselling, gimmicks, or surprises at the end.

Award-Winning Workmanship

We’re proud to provide our customers with the highest service quality on every call. In fact, we’ve won awards for it, including the Bryant Medal of Excellence.

Fast Response

Your calls are greeted by our in-house staff, who will schedule you for immediate service. Same-day service is available for most emergencies so you rarely have to wait to get your problem under control.

bbb ab seal horizontal large
frame 1
ruudpropartner 3c
medal of excellence
indoor air quality specialists
0000183 nate toolkit app 300

Client Reviews

    

Comprehensive Heating Services

Ensure a dependable HVAC system year-round

Littleton’s weather is anything but predictable—blazing summers, freezing winters, and everything in between. That’s why you need an HVAC system built for Colorado’s high-altitude climate.

Whether it’s a brand-new furnace installation, a quick AC repair, or routine maintenance, our expert team is here to keep your home comfortable no matter the season.

Heating services

  • Furnaces: High-efficiency replacements, expert repairs, and seasonal tune-ups.
  • Garage Heaters & Radiant Floor Heating: Custom heating solutions for extra comfort.
  • Boilers: One of the only HVAC companies in the area specializing in boiler installations and repiping.

Cooling services

  • Central AC: Repairs, energy-efficient upgrades, and expert installations to handle Colorado’s dry heat.
  • Ductless Mini-Splits: The perfect solution for older homes, additions, or rooms with inconsistent temperatures.
  • Heat Pumps: Efficient heating and cooling in one single unit—we’ll make sure yours is built for Colorado’s climate.

Smart temperature control

  • Smart Thermostats: Wi-Fi-connected and programmable options to help you save energy without lifting a finger.
  • Zoning Controls: Keep every floor of your home at the right temperature and eliminate hot and cold spots for good.

45+ years of keeping Littleton homeowners comfortable

We’re not just another HVAC company—we’re Littleton’s go-to team for honest, high-quality service. For nearly 50 years, we’ve built our reputation on doing things the right way, not the easy way. Here’s what you can expect when you work with us:

  • No Gimmicks, No Upselling – We offer free in-person estimates and only recommend what you actually need. No pressure, no surprises.
  • Certified Experts – Our NATE- and EPA-certified technicians bring decades of experience to every job. Plus, we never use subcontractors—you get our in-house team every time.
  • Same-Day Service – For major repairs, we’ll be there fast—and unlike other companies, we don’t tack on extra fees just because it’s urgent.
  • Efficiency That Pays Off – Upgrading to a high-efficiency unit can cut utility costs by 30-40%, saving you money year after year.
  • Long-Term Value – We stand behind our work with a 10-year parts & labor warranty on select installations and a 20-year warranty on heat exchangers.
  • Trusted Professionals – Before your service, you’ll receive a photo and bio of your technician so you know exactly who’s coming to your home.

And here’s a bonus: Every new installation comes with a free maintenance service (valued at up to $314) to keep it running strong.

sanders johnson hvac denver 78
sanders johnson hvac denver 58

Heating and cooling services built for high-altitude climate

Living in Littleton means dealing with thin air, dry winters, and big temperature swings—and not every HVAC system is up for the challenge. That’s why we design, install, and maintain units built to perform efficiently in Colorado’s unique climate.

  • High-altitude AC optimization – Standard air conditioners have to work harder at Littleton’s elevation. We customize sizing and airflow so your home stays cool without overworking your AC.
  • Cut your energy costs – Heating and cooling make up about half of your utility bill—around $500 per year for most homeowners. Upgrading to a high-efficiency model can reduce those costs significantly.
  • Combat dry winter air – Colorado’s low humidity (often below 30%) can lead to dry skin, irritated sinuses, and even damage to wood floors and furniture. Installing a whole-home humidifier to your HVAC system can restore moisture balance.

Extend the life of your system with proper service

Regular maintenance is the key to lower energy bills, better performance, and a longer lifespan.

Here’s how to make sure your HVAC system doesn’t let you down when you need it most:

  • Change AC and furnace filters every 1-3 months – A clogged filter makes your unit work harder than it should, leading to higher energy use and avoidable wear and tear.
  • Schedule annual tune-ups – Routine service reduces the risk of costly breakdowns.
  • Check airflow & ductwork – Many older homes in Littleton have undersized or leaky ductwork, which strains your system and lowers efficiency. We can inspect and optimize your setup to improve airflow and comfort.

We’re all about prevention because a little maintenance now means fewer headaches (and expenses) down the road.

group 4565510

Service Areas

Sanders & Johnson serves the entire Denver metro area and surrounding communities.

 

Other Cities We Serve

  • Englewood
  • Northglenn
  • Broomfield
  • Golden
  • Park Hill
  • Castle Rock
  • Greenwood Village
  • Superior
  • Centennial
  • Highlands Ranch
  • Cherry Creek
  • Lakewood
  • Washington Park
  • Cherry Hills
  • Lone Tree
  • Morrison
  • Wheat Ridge
  • Thornton

HVAC Guides

Sanders & Johnson is Denver, Colorado’s local expert in maintaining your heating unit. Give us a call today at 720-594-2764 to schedule a visit!

Call: 720-594-2764