Heating and Cooling Services in Denver, CO
Colfax HVAC Denver provides residential heating, cooling, ventilation, and indoor air quality services for homes across the Denver area — from seasonal maintenance to system installation and repair.
Local HVAC service for Denver homes
Colfax HVAC Denver focuses on the heating, cooling, and indoor air quality needs of Denver-area homeowners. From keeping a furnace running through cold winter nights to restoring cooling during dry summer afternoons, the goal is practical, reliable comfort for the way people actually live in their homes.
Based at 5610 E Colfax Ave, Denver, CO 80220, we serve homeowners across the city and nearby neighborhoods with residential HVAC repair, installation, maintenance, and diagnostics.
Learn more about us
Featured HVAC services
A selection of the residential heating, cooling, and indoor air quality services available to Denver homeowners.
AC Repair
Diagnosis and repair of residential air conditioning systems that have stopped cooling or are performing poorly.
Learn more →
AC Installation
Installation of new residential air conditioning systems sized and configured for Denver homes.
Learn more →
AC Maintenance
Seasonal tune-ups that help air conditioning systems run efficiently through Denver's cooling season.
Learn more →
Central Air Conditioning
Whole-home cooling through a central system, ductwork, and a matched condenser and coil.
Learn more →
Ductless Mini-Split Systems
Ductless heating and cooling for rooms or homes without traditional ductwork.
Learn more →
Heating Repair
Diagnosis and repair of residential heating systems that aren't keeping the home warm.
Learn more →Heating and cooling for Denver's seasons
Denver's high elevation and dry climate bring wide temperature swings — hot summer afternoons and cold winter nights. Heating and cooling systems here have to handle both extremes, often in the same week.
Summer cooling
Air conditioning repair, maintenance, and installation help keep homes comfortable through dry, sunny stretches when cooling demand peaks.
Winter heating
Furnace and heat pump service keeps heating reliable through cold snaps, with maintenance that helps catch issues before the coldest days.
When to request HVAC service
Some signs point to a heating or cooling issue that's worth a closer look. Here are common problems and the moments a homeowner may want to request service.
System won't start
A furnace or air conditioner that won't turn on may have a tripped breaker, a faulty igniter, or a control-board fault worth diagnosing.
Uneven temperatures
Rooms that won't stay comfortable often point to ductwork, airflow, or equipment-sizing issues that an inspection can uncover.
Rising energy bills
A gradual increase in heating or cooling costs can signal reduced efficiency from a system that needs maintenance or repair.
Unusual sounds or smells
New noises, rattling, or odors when the system runs are worth addressing early before they become larger problems.
Poor airflow
Weak airflow from registers can come from a clogged filter, a blower issue, or ductwork restrictions.
Frequent cycling
A system that starts and stops often may be short cycling — a sign of a sizing, control, or component issue.
From inquiry to service planning
A straightforward process helps turn a comfort concern into a clear plan of action.
Submit an inquiry
Share your service address and a description of the heating or cooling issue through the contact form.
Review the request
Your inquiry is reviewed to understand the system, the symptoms, and the type of service needed.
Plan the service
A service plan is outlined — whether that's a diagnostic visit, maintenance, or an installation.
Address the issue
The planned service is carried out and the system's performance is reviewed.
HVAC systems and residential environments
View the gallery →
Service areas around Denver
Heating and cooling services for Denver and nearby neighborhoods. Service areas are listed as proposed coverage and should be confirmed when requesting service.
Frequently asked questions
What HVAC services are available?+
Colfax HVAC Denver focuses on residential heating, cooling, ventilation, and indoor air quality services, including repair, installation, maintenance, and diagnostics for furnaces, air conditioners, heat pumps, and related systems.
When should an air conditioner be inspected?+
An air conditioner should be inspected if it stops cooling, blows warm air, short cycles, makes unusual sounds, or if it has been more than a year since the last maintenance visit. Scheduling a tune-up before summer can help prevent mid-season failures.
What are common signs of furnace problems?+
Common signs include a furnace that won't start, blows cold air, lights and then shuts off, makes unusual sounds, or causes a sudden rise in heating costs. Any of these warrant an inspection, especially before cold weather arrives.
How often should HVAC filters be replaced?+
Most homes benefit from a filter change every one to three months, with more frequent changes during heavy-use seasons or in homes with pets. A technician can recommend a schedule based on your system and filter type.
What can affect indoor air quality?+
Filtration, ventilation, humidity, ductwork condition, and outdoor pollutants all affect indoor air quality. Tightly sealed, energy-efficient homes can trap pollutants if not properly ventilated.
Ready to request HVAC service?
Submit a service inquiry and we'll review your heating or cooling needs.
Find us in Denver
Colfax HVAC Denver · 5610 E Colfax Ave, Denver, CO 80220