HVAC Contractor in Fort Collins, CO
Top-Rated Heating, Air Conditioning & Ventilation Services
Allen Service is an HVAC contractor in Fort Collins providing heating, cooling, ventilation and indoor air quality services for homes and businesses throughout Larimer County. From furnace and AC repairs to complete system replacements, heat pumps and routine maintenance, our team helps keep Fort Collins properties comfortable through cold winters, warm summers and changing Colorado weather.
Serving Larimer County From Our Fort Collins Location:
101 S Link Ln, Fort Collins, CO 80524
Our Fort Collins HVAC Services
Allen Service provides comprehensive HVAC services in Fort Collins for heating, cooling, ventilation and indoor comfort systems. Whether your equipment needs a minor repair, seasonal maintenance or complete replacement, our HVAC technicians can evaluate the system and recommend a practical solution based on your property and comfort needs.
Heating
Stay comfortable through Northern Colorado winters with professional heating service from Allen Service. We repair, replace, install and maintain furnaces, boilers and other heating equipment for Fort Collins homeowners and businesses.
Cooling & Air Conditioning
When temperatures rise, reliable air conditioning helps keep your home comfortable. Allen Service provides AC repair, replacement, installation and maintenance in Fort Collins for systems struggling with weak airflow, inconsistent temperatures, unusual operation or complete loss of cooling.
Ventilation & Air Quality
Temperature is only one part of indoor comfort. Our ventilation and indoor air quality services can help address airflow, filtration, humidity and airborne contaminants throughout your home. Allen Service works with Fort Collins homeowners to improve how conditioned air moves through living spaces and how clean the indoor air feels.
Heat Pumps
Heat pumps provide both heating and cooling from a single system, making them a versatile option for many Colorado homes. Allen Service provides heat pump installation, repair, replacement and maintenance in Fort Collins, including service for ductless mini-split systems.
Commercial HVAC
Allen Service provides commercial HVAC services for Fort Collins businesses needing dependable heating, cooling and ventilation. Our technicians handle system repairs, replacements, installations and maintenance while working to minimize unnecessary disruption to daily operations.
24/7 Emergency HVAC Services
A failed furnace during freezing weather or a major cooling problem during summer may require immediate professional attention. Allen Service provides 24/7 emergency HVAC service in Fort Collins for urgent heating and cooling problems so customers don’t have to wait for a regular appointment.
Why Fort Collins Homeowners Choose Allen Service's HVAC Services
- Serving Northern Colorado since 1962: Allen Service brings decades of local HVAC experience to homes and businesses throughout Fort Collins and Larimer County.
- Complete heating and cooling services: Our team handles HVAC repair, replacement, installation and maintenance for a wide range of comfort systems.
- 24-hour emergency availability: Fort Collins homeowners can call for urgent HVAC service when a heating or cooling failure cannot wait.
- Local Fort Collins office: Our S. Link Lane location provides a nearby base for serving customers throughout Larimer County.
- Service backed by warranties: Qualifying HVAC workmanship and services are protected by applicable Allen Service warranty coverage.
- Options for ongoing maintenance: Membership plans, seasonal service and maintenance programs can help homeowners stay ahead of developing HVAC problems.
Thanks for a great experience!
We had Travis and Aidan both out to investigate our pipes with a scope and helped us learn about some necessary projects. Very knowledgeable & friendly. Hoping we can move forward within our budget.
Great work!
Logan was on time & very professional. He explained everything he did and gave options to better improve our system. He recommended an upgrade to our disposal and installed a new one.
Great Service from Joseph Arguello!
I had some frustrations with a previous service sent to my house that had me at the point of canceling my service. Joseph’s attitude, professionalism & great work were outstanding!
Excellent Choice
Friendly, professional, knowledgeable, and respectful. They completed our repair in a timely manner and kept me abreast of all repairs. They detailed their recommendations and provided me with a copy of my choices.
Clean, Respectful, & Friendly
Allen came out and walked us through the issues. Explained options and did not try to oversell. Clean, respectful, friendly, and understanding. We’re pleased with the service and will continue to recommend them.
Friendly & Professional
I cannot express enough how much I appreciate Allen for saving me! My mini splits in my rental property went out, and they were able to carve out a whole day to fix it on short notice! The staff were all great, friendly, and helpful.
Types of HVAC Systems We Service
Allen Service services a wide range of heating, cooling and ventilation equipment found in Fort Collins homes and businesses. Our technicians work on furnaces, central air conditioners, boilers, heat pumps, ductless mini-splits, commercial HVAC equipment, thermostats, ventilation systems and indoor air quality products. We can also evaluate aging equipment and help determine whether repair or replacement makes the most sense.
HVAC Problems To Look Out For
HVAC problems often begin with subtle changes in comfort, airflow, sound or system performance. Paying attention to warning signs can help Fort Collins homeowners address developing issues before equipment loses heating or cooling completely.
Heating System Issues
- The furnace starts and stops repeatedly
- Some rooms stay noticeably colder than others
- The system takes much longer to reach the thermostat setting
- You hear rattling, grinding or booming during operation
- The furnace produces little or no warm air
Air Conditioning Issues
- Warm air comes from the vents while cooling is running
- The AC runs for long periods without reaching the set temperature
- Ice develops on refrigerant lines or the indoor coil
- The outdoor unit makes unusual buzzing or clicking sounds
- Cooling performance drops significantly during hotter afternoons
General HVAC Warning Signs
- Monthly energy use rises without a clear explanation
- Airflow is noticeably weaker at certain vents
- The thermostat and indoor temperature frequently disagree
- Unusual odors appear when the HVAC system starts
- Dust or indoor air quality problems become more noticeable
Local Considerations When Choosing a New HVAC System
Fort Collins homes experience substantial seasonal temperature swings, regular snowfall and a relatively dry climate. System sizing, efficiency, heating capacity and outdoor equipment placement all deserve careful consideration when replacing HVAC equipment. The city also has a varied housing stock, including many older homes alongside newer construction, so ductwork, insulation and existing mechanical infrastructure can differ significantly from property to property.
Local Factors
Fort Collins Data
HVAC Impact
Cold Weather Heating Demand
January normals are about 45°F high / 18°F low.
Heating capacity, cold-weather performance and proper system sizing are important for maintaining comfort during winter cold snaps.
Summer Cooling & Humidity
July normals are about 87°F high / 59°F low, with Fort Collins generally experiencing a dry Front Range climate
Efficient cooling and good airflow matter during hot afternoons, while excessive dehumidification is usually less central than in humid climates.
Snowfall & Outdoor Unit Exposure
Fort Collins averages roughly 50 inches of snow annually.
Heat pump and AC outdoor units should have proper clearance, drainage and placement to reduce problems from snow accumulation and winter exposure.
Home Size & Housing Stock
Fort Collins includes a substantial mix of single-family and multifamily housing; city planning data reported about 63% single-family housing in 2016.
HVAC equipment should be sized to the actual structure, floor plan, insulation and duct system rather than relying on square footage alone.
Home Age & Construction Mix
City housing data found about 41% of units were built before 1980 in the referenced 2015–2019 period.
Older homes may have aging ductwork, lower insulation levels or mechanical layouts needing consideration during replacement.
Electricity Rates & Energy Costs
Fort Collins uses residential time-of-day electric pricing, with higher rates during defined on-peak periods.
High-efficiency equipment, smart controls and operating schedules can influence long-term energy costs.
Permits & Local Regulations
Fort Collins adopted the 2024 I-Codes effective April 1, 2026, and qualifying HVAC work is subject to local permitting and code requirements.
Replacement and installation projects should account for current mechanical, energy and permitting requirements before work begins.
Unexpected Happens. We Make it Easier.
Our HVAC Financing Options
A furnace, air conditioner or complete HVAC replacement can be a significant home investment. Allen Service offers HVAC financing options for qualified Fort Collins homeowners looking for additional flexibility when paying for repairs, replacements and other larger comfort projects.
HVAC Discounts, Sales & Specials in Fort Collins
Allen Service offers coupons, seasonal HVAC specials and membership options designed to help Fort Collins homeowners manage routine service and repair costs. Membership plans start at $10 per month and can include annual heating and cooling inspections, service discounts, loyalty benefits and additional maintenance features depending on the plan selected.
GET A BASIC DRAIN CLEARING FOR
$99 PER LINE
The offer is included per drain line cleared
Certain restrictions may apply
Valid
September 1, 2026
-
November 30, 2026
HVAC Replacement
UP TO $2500 OFF
Restrictions may apply
Valid
September 1, 2026
-
November 30, 2026
A/C or Furnace Replacement
Up To $750 Off
Restrictions may apply
Valid
September 1, 2026
-
November 30, 2026
SAVE UP TO $1010
Make your home a 10/10 with a Generator Replacement
Restrictions may apply
Valid
September 1, 2026
-
November 30, 2026
Plumbing Repair
$50 OFF
Of 250+ OR MORE
Restrictions may apply
Valid
September 1, 2026
-
November 30, 2026
AC or Furnace Inspection
$99
OR JOIN THE CLUB
Restrictions may apply
Valid
September 1, 2026
-
November 30, 2026
Common HVAC Questions
How often should I schedule HVAC maintenance in Fort Collins?
Most homes benefit from routine heating and cooling service before periods of heavy seasonal use. Scheduling furnace service before winter and AC service before summer can help identify wear, airflow problems and other developing concerns.
Should I repair or replace my HVAC system?
The right choice depends on the system’s age, condition, repair history, efficiency and cost of the current problem. An HVAC technician can evaluate the equipment and compare repair costs with the potential benefits of replacement.
Are heat pumps a good option for Fort Collins homes?
Heat pumps can be a practical heating and cooling option for many Fort Collins properties. The best setup depends on home construction, system sizing and cold-weather heating needs, so a professional evaluation can help determine whether a heat pump or dual-fuel configuration fits the property.
Our Service Areas
Allen Service serves homeowners and businesses throughout Denver Metro and Northern Colorado from our Commerce City and Fort Collins locations. Our service area reaches communities across the Front Range, giving customers access to one trusted team for heating, cooling, plumbing and electrical needs.