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Windsor HVAC Commercial HVAC Contact Allen Service
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Call Us Today! 970-431-6574
  • J
    "Nathan was awesome"
    Fixed my issue quickly, answered all my questions, and gave me advice where I needed it.
    Josh
  • A
    "The staff were polite"
    There were different price ranges to select from that could fit the customer’s price range and needs.
    Amy Carey-Weber
  • C
    "Very happy with the experience!"
    Brandon Freed was extremely nice and kept me informed of the problems as he worked.
    Clay Lupear
  • R
    "Definitely Will Call Allen Service Again"
    The technician, David, did an excellent job explaining the work needed and was very knowledgeable.
    Rick Smith
  • T
    "They Are Quality People and Did Quality Work"
    Both of them are such nice, friendly, competent people. They explained in detail everything they were doing.
    Terry Humphrey
  • R.
    "Allen Service was great to work with"
    Everything was simple from scheduling, updates on my appointment time, and the actual work performed.
    R. J. G.
Nathan was awesome
Nathan was awesome. Fixed my issue quickly, answered all my questions, and gave me advice where I needed it.
Josh
The staff were polite
The staff were polite and explained information. There were different price ranges to select from that could fit the customer’s price range and needs.
Amy Carey-Weber
Very happy with the experience!
I had been having intermittent issues with my AC unit and it finally stopped working. I called and someone was dispatched and arrived within an hour of scheduling. Brandon Freed was extremely nice and kept me informed of the problems as he worked. He was able to get my 25 year old system working again. I will need to replace the unit soon but for the time being he was able to get it working! Very happy with the experience!
Clay Lupear
Definitely Will Call Allen Service Again
Service on Sunday to repair a hose bib. The technician, David, did an excellent job explaining the work needed, and he identified a couple of other minor plumbing repairs that could be quickly handled. He was very knowledgeable and did an excellent job explaining each of the repairs. He executed the work efficiently and, based on my post-repair review, the workmanship was also excellent. Definitely will call Allen Service for any future plumbing work.
Rick Smith
They Are Quality People and Did Quality Work
Cole came to our house to do routine maintenance on our furnace. He noticed that we didn't have outside venting of our dryer. He said it could be a fire hazard for us. We appreciated this information very much! No one had ever told us before. We were given an estimate for venting it to the outside. Cole and Zach came to our house yesterday to do the installation. Both of them are such nice, friendly, competent people. They explained in detail everything they were doing. They installed it in a very efficient and quick way. We appreciated so much everything that they did. They are quality people and did quality work. They deserved and received high praise from us!
Terry Humphrey
Allen Service was great to work with
Allen Service was great to work with regarding the plumbing service performed. Everything was simple from scheduling, updates on my appointment time, and the actual work performed. The plumbing tech, Jon, was very professional in explaining the work he performed. All in all, he was very careful, left no mess, and completed cleaning the drain lines in a short time. The pricing was very good as promised.
R. J. G.
5.0
Over 6000 5-Star Reviews

Serving Weld County, Windsor, Erie, Evans, Johnstown, Frederick, Firestone and beyond Commercial HVAC Windsor

Put comfort and productivity first with Allen Service's premium commercial HVAC offerings. Specializing in creating optimal climate solutions for all types of commercial spaces, we offer custom installation, repair, and maintenance services tailored to your specific needs. Our team of experienced commercial HVAC technicians ensures your heating, cooling, and ventilation systems operate efficiently and reliably, providing a comfortable and productive atmosphere for your employees and clients. With a commitment to energy efficiency and cutting-edge technology, Allen Service is here to help you manage your indoor air quality and temperature control with precision and care.

Ensure your business space is always comfortable and energy-efficient. Contact Allen Service at (970) 431-6574 for superior commercial HVAC solutions.

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Call Us Today! 970-431-6574
Why Choose Allen Service

For over 60 years, Allen Service has delivered dependable HVAC, plumbing, and electrical solutions across Denver, Fort Collins, and beyond. As a family-owned company, we put your comfort first—offering quality workmanship, honest communication, and 24/7 service. Experience the difference that comes from people who truly care.

Why Choose Us:

  • Trusted local experts since 1962
  • Family-owned and operated for three generations
  • Comprehensive HVAC, plumbing, and electrical services
  • 24/7 emergency availability
  • VIP membership plans with exclusive benefits
  • Customer-first guarantee on every job
Contact Us
Why Trust Our Services?
  • Trusted HVAC Experts Since 1962

    Decades of experience serving Colorado’s homes and businesses.

  • Courteous Service, Always On Time

    Respectful, uniformed staff prioritize your schedule and satisfaction.

  • Fully Stocked Trucks for Quick Repairs

    We arrive prepared to fix most issues in a single visit—no delays.

  • Expert Technicians, Lasting Solutions

    Highly trained pros ensure quality work and long-term comfort.

Areas We Serve
  • Severance
  • Weld
  • Windsor
  • Eaton
  • Timnath
  • Greeley
  • Johnstown
  • Ault
Call Us Today! 970-431-6574
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