Heating and cooling for Denver, CO
Comfort you stop thinking about.
Residential and light commercial HVAC service across Denver, Aurora and Lakewood. 9 years serving Denver and the surrounding area.
Call (303) 555-0177 Request a quote
- Load calculations before any replacement quote
- Flat-rate repair pricing with repair-or-replace math shown
- Licensed, certified technicians on salary, not commission
HVAC services for Denver
Residential and light commercial HVAC service across Denver, Aurora and Lakewood.
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AC Repair
Diagnostics and repair for central air, heat pumps and mini-splits.
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Heating Repair
Furnace, boiler and heat pump repair before the first cold snap.
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System Installation
Replacement and new construction installs sized to the house, not the invoice.
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Tune-Ups & Plans
Seasonal maintenance that keeps efficiency up and breakdowns down.
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Indoor Air Quality
Filtration, humidity control and ventilation for healthier air.
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Ductwork & Sealing
Sealing and redesign so conditioned air reaches the rooms you paid for.
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Recent work in Denver
A look at jobs Northline Heating & Air has finished for neighbours.
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Sound familiar?
The problems Denver customers call us about most. If any of these is happening at your place, it is worth a look before it gets worse.
- Rooms that never reach the temperature you set
- A system that runs constantly but heats or cools little
- Rattling, banging or squealing from the unit
- Bills that climbed with no change in how you use it
How a job actually goes
Four steps, no mystery pricing and no surprise arrivals.
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Book a visit
Call (303) 555-0177 or request a slot online. We confirm a two-hour arrival window.
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Measure, then recommend
We test airflow, refrigerant and the equipment before quoting anything.
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Repair or install
Flat-rate repair, or a right-sized replacement with the load calculation attached.
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Commission and explain
We verify performance, label the equipment and walk you through the settings.
What changes the price
Every HVAC job is different, so we quote after we see it — never over the phone. These are the things that move the number.
- Repair or replacement, and the size the load calculation calls for
- Efficiency rating and brand of the equipment you choose
- Ductwork that needs sealing, resizing or extending
- Whether the work is scheduled or an emergency call-out
Local, licensed and easy to reach
Northline Heating & Air designs, installs and services heating and cooling systems across Denver, CO.
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Measured, not guessed
Load calculations and static pressure testing before we recommend equipment.
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No-pressure advice
Salaried technicians who will tell you when a repair is the better buy.
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Seasonal readiness
Tune-ups booked before the first heat wave and the first freeze.
Questions we get asked
Straight answers before you pick up the phone.
How often should my system be serviced?
Twice a year: cooling in spring, heating in fall. Seasonal tune-ups catch refrigerant and airflow problems while they are still cheap to fix.
Should I repair or replace?
As a rule of thumb, if the system is past 12 years old and the repair costs more than a third of a replacement, we price both and show you the ten-year cost of each.
Do you offer emergency service?
Yes. Plan members get priority scheduling and no overtime charges. Non-members are scheduled in order of arrival, with no-heat calls in winter moved to the front.
What brands do you work on?
All major residential brands, including Carrier, Trane, Lennox, Rheem, Goodman and Mitsubishi. We stock the most common universal parts on the truck.
Service area and hours
Residential and light commercial HVAC service across Denver, Aurora and Lakewood.
Where we work
- Denver
- Aurora
- Lakewood
Outside the list? Call (303) 555-0177 — we will tell you honestly whether we cover it.
When we answer
- Mon – Fri
- 7:00am – 6:00pm
- Saturday
- 8:00am – 2:00pm
- Sunday
- Closed
Ready when you are
Residential and light commercial HVAC service across Denver, Aurora and Lakewood. Call (303) 555-0177 or send the form — we will confirm a time.