50 years of honest HVAC service in Littleton

Local, reliable heating and cooling with a 100% satisfaction guarantee.

What people say

What our clients actually say.

★★★★★ 5 from 600 reviews

“Joe Kastens did an amazing job installing our whole house humidifier! He was very professional and kept me informed during each step in the install process.”— Jacob Fuhrman

“HAYDEN DID A GREAT JOB AND KNEW WHAT HE WAS DOING. HOFULLY THE HUMIDIFIER KEEPS WORKING. THANK YOU.”— WILLIAM ESSER

“Southwest Heating & Cooling actually CARES. They came out on exceedingly short notice today and quite literally helped save a real estate deal for me.”— Alexandra H. Band

“Aaron came out to service my AC unit. He was prompt courteous and knowledgeable and did not try upselling which I appreciate. I like that this company sends photos of their technician ahead of the visit and ask for feedback on their performance. They are very customer centered.”— Alison K.

Your next visit starts here.Two clicks and you're booked — or just give us a call.

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✓735 five-star reviews (4.8 rating)

✓Established 1973 (50 years in business)

✓Master Mechanical License (N29)

✓2018 Top 30 Rebate Producer, Xcel Energy

✓100% satisfaction guarantee

✓Locally owned and operated

Our services

Quality work, straight prices, no surprises.

Repairs, installs and maintenance — quoted straight, scheduled honestly, and guaranteed in writing.

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AC Installation & Replacement

From first measurements to final walkthrough, handled end to end.

AC Repair

Quality AC repair services with a focus on honesty and integrity.

AC Maintenance

Regular care that keeps small issues from ever becoming big ones.

Furnace Installation & Replacement

The unglamorous parts handled properly, because that's where things go wrong.

Furnace Repair

Exceptional furnace repair services, emphasizing commitment to excellence.

Furnace Maintenance

Careful work, and a straight answer about what it will take.

Air Duct Cleaning

Swift and thorough duct cleaning services.

Heat Pumps

Explained before it starts, so there are no surprises at the end.

Why us

Why Southwest Stands Apart

✓50 years locally owned and operated in Littleton
✓No upselling—technicians diagnose honestly and present options
✓100% satisfaction guarantee on systems and services
✓Master Mechanical License (N29) and 2018 Top 30 Rebate Producer (Xcel Energy)
✓Transparent communication: photos of technicians sent ahead, feedback requested after every visit
✓Same-day emergency response when timing matters

Our story

Established 1973. Built on Integrity.

Southwest Heating & Cooling has served the south metro area since 1973, built on a foundation of honest service and customer satisfaction. As a locally owned business, we back every installation and repair with a 100% satisfaction guarantee—if you're not satisfied, we'll make it right. Our commitment to integrity, transparency, and accountability has earned us 735 five-star reviews and the trust of thousands of homeowners and businesses.

◆ 8109 W Brandon Dr, Littleton, CO, 80125

5★600 reviews

These folks are the best HVAC company I think that I have ever worked with. Everyone and I mean everyone was wonderful! From Aaron who did a fantastic job assessing the system and getting the replacement mapped out, to Preston and Phaylan who did an amazing job with the install, to Lisa in the…

— Eric S.

Current offer

A good time to get started.

Save up to $5,000 on a new heat pump.

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Good to know

Questions, answered.

Don't see yours? Call (303) 791-2679 — a real person answers.

Do you offer financing?

Yes. Financing options are available. Contact us at 303-791-2679 for details.

What's your satisfaction guarantee?

We back our work with a 100% satisfaction guarantee on both our systems and services. If you're not satisfied, we'll make it right.

Do you try to upsell unnecessary services?

No. Our technicians diagnose issues honestly and present options without pressure. Multiple customers have specifically praised us for not upselling and for offering preventative measures only when appropriate.

Are you licensed and insured?

Yes. We hold a Master Mechanical License (N29) and maintain the necessary permits and insurance for all work.

What areas do you serve?

We serve Littleton, CO, and the surrounding south Denver metro area, including Heritage, Southbridge, and Highlands Ranch.

Can you help with emergency repairs?

Yes. We respond to urgent calls on short notice. One customer noted we came out on exceedingly short notice and helped save a real estate deal.

Financing

Financing on bigger jobs.

Financing available. Contact us for options.

“This was the most pleasant installation I've ever been part of. There was no attempt to upsell. Had a great conversation about what we needed, we set a date they were prompt, clean, and so professional. Did the job explain to us everything they did. I would use them seven days a week and twice on…”— Sam S.

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Visit us

Hours & location

Hours

Mon, Tue, Wed, Thu, Fri, Sat · 7:30 AM – 4:00 PM
Sun · 12:00 AM – 12:00 AM

Where to find us

8109 W Brandon Dr, Littleton, CO, 80125

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Get in touch

(303) 791-2679 Get a free estimate →

Ready when you are

Your site can do even more.

This demo is the Foundation build. These add-ons switch on without a redesign:

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Instant estimate requests

Photo-upload estimate forms that turn night-time browsers into booked jobs.

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Online booking

Patients and clients book themselves 24/7 — synced to your calendar, with reminders that cut no-shows.

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Review engine

Automatic post-visit review requests that grow your Google rating on autopilot.

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Monthly SEO content

Fresh, search-optimised pages every month so you climb the rankings for the services that pay.

Your first visit starts here.

Tell us the job — we'll come out, take a look, and give you a straight price.

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Like what you see? This is just the Foundation tier. Online booking, an automatic review engine and monthly SEO content are one conversation away — no rebuild, no downtime.

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