Denver's dependable comfort team since 2007

Comfort restored, usually same day.

Licensed HVAC repair, install, and maintenance with upfront pricing and 24/7 emergency response. We show up on time and leave it spotless.

4.8
438 Google reviews
Northline Heating & Cooling in Denver
18+Years in business
Upfront pricingFlat-rate quotes before any work begins.
Licensed & insuredEPA-certified, bonded, and background-checked.
Same-day serviceMost repairs handled the day you call.
24/7 emergencyReal technicians on call, nights and weekends.

Denver homeowners have trusted us for over 15 years

18+
Years in business
9,200+
Jobs completed
24/7
Emergency response
4.8
Average Google rating

Heating and cooling, done right

One licensed team for every season, from emergency no-cool calls to full system replacements.

AC Install & Replace

Right-sized, energy-efficient units with clean installs and registered warranties.

Heating & Furnace Repair

Fast diagnosis and repair for furnaces, heat pumps, and boiler systems.

Duct Cleaning & Sealing

Remove buildup, seal leaks, and restore healthy airflow throughout your home.

Maintenance Plans

Seasonal tune-ups that extend equipment life and prevent costly breakdowns.

24/7 Emergency Service

After-hours dispatch for no-heat and no-cool emergencies, any day of the year.

Indoor Air Quality

Filtration, humidifiers, and UV systems for cleaner, healthier indoor air.

How it works

No mystery fees, no upsells. Just a clear path from your first call to a comfortable home.

01

Call & diagnose

Reach a real person fast. We diagnose accurately, on-site or over the phone.

02

Transparent quote

You approve a flat-rate price before we lift a wrench. No surprises later.

03

Fixed right

Certified techs complete the work cleanly and back it with a solid warranty.

Northline Heating & Cooling team at work
18+Years keeping Denver comfortable
Why Northline

Comfort you can count on.

Our licensed technicians diagnose accurately, quote transparently, and treat your home with respect, so a repair or install is one less thing to worry about.

  • Flat-rate pricing quoted before we start
  • EPA-certified refrigerant handling
  • We leave your home cleaner than we found it
  • Financing available on new system installs

What Denver homeowners say

4.8
438 verified reviews
Our AC died on a Friday night. A technician arrived within two hours and had us cooling by midnight.
Robert HayesEmergency repair
They explained SEER ratings without pushing the priciest unit. The install was spotless and on time.
Michelle TorresAC replacement
Duct cleaning made a visible difference in dust. They showed before-and-after photos from a camera scope.
Kevin BrooksDuct cleaning
The maintenance plan caught a failing capacitor before the summer peak. Saved us an emergency call.
Sandra LiMaintenance member
Upfront pricing, friendly crew, and they wore boot covers in the house. Exactly how it should be done.
Tom DelaneyFurnace repair
Called at 6am with no heat. Someone answered, dispatched a tech, and we were warm before the kids woke up.
Grace OkoroEmergency heating
Proudly serving Denver & nearby
  • Denver
  • Aurora
  • Lakewood
  • Boulder
  • Littleton
  • Centennial
  • Arvada
  • Englewood

No heat? No cool? We'll be there.

Request service now and reach a real technician fast, with upfront pricing and 24/7 emergency dispatch.

Northline Heating & Cooling

Engineering comfort with clear communication.

4.8 · 438 reviews
Visit & contact
  • 1450 S Broadway, Denver, CO 80210
  • CO Master Mechanical License #ME-11827

Insured and bonded. EPA-certified refrigerant handling.

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