Service Area · Littleton, Colorado

HVAC Service in Littleton, CO

Southwest-metro scheduling across Littleton's 80120–80129. Patience included for quirky old systems. 24-hour emergency service: (303) 568-5036.

Local service

What we see every week in Littleton, CO

Littleton has some of the oldest housing stock in the metro — and we mean that as a compliment to the houses and a warning about the equipment. We regularly find furnaces old enough to vote, ductwork that was an afterthought, and creative homeowner modifications from four decades of 'good enough'.

Old systems need experienced hands, not parts-changers. A 30-year-old furnace can still be diagnosed properly — and when it's genuinely done, we'll show you exactly why instead of waving at its age.

From historic downtown blocks to the 80120–80129 corridors, we bring the same repair-first, written-price approach we run in Aurora.

Older ductwork in a Littleton attic

Littleton, CO · Oct 2026

What we do

Services in Littleton, CO

The full PeakLine lineup, dispatched from Aurora — repair-first, written prices, no pressure.

01

Furnace Repair

No-heat diagnosis and repair for gas furnaces — igniters, blowers, boards, and everything between.

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02

Furnace Installation

Right-sized furnace replacement with honest repair-vs-replace math first.

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03

Furnace Tune-Up

Pre-winter maintenance that catches January failures in October.

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04

AC Repair

Fast diagnosis for weak cooling, freeze-ups, leaks, and dead units.

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05

AC Installation

Central AC sized by load calculation — not a guess.

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06

AC Tune-Up

Pre-summer maintenance so July doesn't surprise you.

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07

Heat Pump Services

Cold-climate heat pumps: one system, both seasons.

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08

Mini-Split Services

Zoned comfort for rooms your ducts never reached.

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09

Swamp Cooler Conversion

Our signature: retire the swamp cooler, get real central AC.

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010

Thermostat Services

Troubleshooting, replacement, and smart thermostat installs.

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011

Indoor Air Quality

Filtration, humidity, and ventilation for dry Colorado air.

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012

Duct Services

Find and seal the leaks wasting your heated and cooled air.

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How it works

Book → diagnose → approve → fixed

01

Book

Call (303) 568-5036 or request online. Describe the symptom in your own words — "it won't turn on" is a complete work order.

02

Diagnose

A technician inspects the system, finds the actual failed part, and explains it in plain English. You see what we see.

03

Approve

Written price — part, labor, total — before any work begins. You approve, decline, or ask about options. No pressure either way.

04

Fixed

Most repairs finish the same visit. The system is test-run, safeties verified, and the work area left clean.

Our word, in writing

Guarantees, not slogans

Written guarantee

No-pressure promise

If you decline a recommended repair, that's the end of it. You'll never get a follow-up sales call, a "limited-time" scare tactic, or a tech who won't leave without a signature.

Written guarantee

Written prices first

Every price we quote is written down — part, labor, total — before we touch a wrench. If the number changes mid-job, the work stops until you re-approve.

Written guarantee

We show our work

Failed parts go in your hand, not our truck. We'll photograph what we found and walk you through it, so you're buying a diagnosis — not a story.

Littleton, CO FAQs

Littleton, CO — straight answers

My furnace is 30+ years old. Can it still be repaired?

Sometimes — it depends on the heat exchanger and parts availability. We'll inspect and give you the honest math.

Do you work on unusual or modified ductwork?

Yes — older Littleton homes are full of it. We sort out what's working and fix what isn't.

Should I be worried about carbon monoxide with an old furnace?

It's worth checking. Ask about our furnace safety inspection with CO testing.

How do I schedule?

Call (303) 568-5036 or request a visit online.

Call (303) 568-5036Book a visit