Serving Littleton, Centennial, Englewood and beyond
Commercial HVAC Centennial
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.
Centennial Commercial HVAC Call for More Information Today!970-431-6574
Very professional, efficient, and communicated well.
Wood C
R"AJ and the Team from Allen"
AJ and the team from Allen were a great group with whom to work.
Robert Dannenberg
K"I will always use him"
Jon is very honest and I screwed up and there was nothing wrong with our shower.
Kristie Thomssen
D"Very professional"
Very professional with a very pleasant demeanor.
Dwight Urs
J"He did amazing work"
He did amazing work and took care of the problem very quickly.
Juvonne Sanchez
W"Justin #48 is a great service technician"
He was logical in his approach, thorough in his evaluations, and reasonable in his assessment of how best to proceed.
William Steigers
C"Matthew Mish Did a Great Job"
He was very professional, took the time to explain the issue with our water heater and was very personable as well.
Cathy
j"Allen Service was great"
He was polite, explained his work very clearly, answered all my questions and was professional.
jerri hebert
K"Very friendly and very knowledgeable"
Very friendly and very knowledgeable.
Kathy Tollefson
A"Cole Was Very Pleasant"
Cole was very pleasant and diagnosed the problem quickly.
Advanced Laparoscopic and General Surgery
B"Great service, reasonable price"
Leaking disposer unit promptly replaced along with drain pipe cleaning.
Bill Jackson
J"Friendly, Efficient Service"
Matthew Mish provided friendly, efficient service and explained what was needed before completing his work.
Janis Edwards
E"Professional and courteous service"
Mathew was professional, courteous, and explained everything in detail.
Ed Painz
J"Dallas was great!"
He knew exactly what the issue was and took care of it quickly.
Jason Terry
K"Thorough Inspection and Tune-Up"
Sam Criswell did a thorough inspection and tuning up of our furnace.
Kelby Cotton
H"Dallas was very helpful"
Dallas was very helpful.
Henry Neri
J"Excellent Experience"
Gave Allen Service a call and someone was at my home within an hour.
Justin Parrish
E"Extremely Knowledgeable and Caring"
Jon was extremely knowledgeable and took such good care of us.
Evan Ferg
B"He Was PHENOMENAL"
We will absolutely be requesting Zack J. for our future services.
Britny Doole
K"We had a great visit with Vee"
She did a very comprehensive inspection and gave a clear explanation of options for us.
Kathy Seele
J"Very Impressed with Professional Behavior"
I was very impressed with professional behavior.
John14: Six
J"Prompt, Clear, and Very Helpful"
Jon Harris 38 was prompt and very clear in his recommendations.
Jeffrey Metzner
J"Our technician did a good job"
Our technician did a good job, but they are expensive.
Joe Stoker
L"Pete was awesome"
Super professional and took care of me.
Logan Tyler
G"Unclogged a main drain on short notice"
They were able to come out on short notice over the weekend to unclog a main drain.
Greg Lehnhoff
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
Great service!
Great service! A job well done in a timely manner.
N8 Boogie
Very professional and efficient
Very professional, efficient, and communicated well. The price was accurate as advertised and the service was "cut to the chase," which I appreciated.
Wood C
AJ and the Team from Allen
After repeated power outages this winter, ordered installation of a Generac 26kW generator with connection to our propane feed. AJ and the team from Allen were a great group with whom to work. They got the install done despite snowy and cold weather. Would happily work with them again.
Robert Dannenberg
I will always use him
Jon is very honest and I screwed up and there was nothing wrong with our shower. He did not charge us, I will always use him and recommend him highly. My husband forgot to tip him, so I need to figure out how to get that to him. Thank you again for great service in such a chaotic world. Kristie Thomssen Bruntz.
Kristie Thomssen
Very professional
Very professional. Did a great job and a very pleasant demeanor.
Dwight Urs
He did amazing work
He did amazing work and took care of the problem very quickly. Thank you.
Juvonne Sanchez
Justin #48 is a great service technician
Justin #48 is a great service technician and honest person. He was logical in his approach, thorough in his evaluations, and reasonable in his assessment of how best to proceed considering the current age of the AC equipment. I will always ask for Justin #48 for my future HVAC service needs.
William Steigers
Matthew Mish Did a Great Job
Matthew Mish did a great job! He was very professional, took the time to explain the issue with our water heater and was very personable as well. I would definitely use him again!
Cathy
Allen Service was great
Allen Service was great, especially the tech Cole Womack. He was polite, explained his work very clearly, answered all my questions and was professional.
jerri hebert
Very friendly and very knowledgeable
Very friendly and very knowledgeable. His name was Matthew Mish.
Kathy Tollefson
Cole Was Very Pleasant
Cole was very pleasant and was able to diagnose the problem quickly.
Advanced Laparoscopic and General Surgery
Great service, reasonable price
Leaking disposer unit promptly replaced along with drain pipe cleaning. Great service, reasonable price. Thanks to Jon Harris!
Bill Jackson
Friendly, Efficient Service
Matthew Mish provided friendly, efficient service and explained what was needed before completing his work.
We haven’t used plumbing services for quite some time, so I don’t know what the prevailing rate would be.
Since we have an annual contract with Allen, we trust the cost is competitive and within normal plumbing pricing standards.
Janis Edwards
Professional and courteous service
Mathew was professional, courteous, and explained everything in detail before starting his work and reported back after completing his drain clearing work.
Ed Painz
Dallas was great!
Dallas was great! He knew exactly what the issue was and took care of it quickly.
Jason Terry
Thorough Inspection and Tune-Up
Sam Criswell 39 did a thorough inspection and tuning up of our furnace. He was patient with our questions and gave a full report on his findings: professional, yet very personable.
Kelby Cotton
Dallas was very helpful
Dallas was very helpful. I would use your services again.
Henry Neri
Excellent Experience
20-year-old hot water heater started leaking. Gave Allen Service a call and someone was at my home within an hour. Everything was replaced and back working the same day. Easton provided several replacement options and did a great job. Excellent experience.
Justin Parrish
Extremely Knowledgeable and Caring
Jon was extremely knowledgeable and took such good care of us. He was friendly and open to questions and educated us well. Would use again.
Evan Ferg
He Was PHENOMENAL
Zack J. serviced our home today and he was PHENOMENAL. He was pleasant to talk with, very professional, and took the time to help educate us so that we had a better understanding of how we can be preventative with our systems.
He had no issue walking us through and showing us what he found, and was great at taking before and after pictures. We will absolutely be requesting Zack J. for our future services, and he has made us feel more than solidified in our decision of continuing our membership.
We not only feel like we have made a smart decision, but we truly feel cared for due to Zack J. Thanks again, Zack, for everything.
Britny Doole
We had a great visit with Vee
We were serviced by Vee and her “co-worker” Waco Flaco. Waco Flaco was a great listener. He sat quietly and never interrupted. Vee, on the other hand, oh my goodness, we couldn’t get her to be quiet! 😂 All this is in jest. We had a great visit with Vee. She did a very comprehensive inspection and gave a clear explanation of options for us. We chose to have the ducts cleaned and also install an IAQ system after seeing the pictures of our duct work. She is friendly, very professional, and the entire visit was great. We enjoyed meeting her and her “co-worker” and look forward to seeing her again when she installs the IAQ system.
Kathy Seele
Very Impressed with Professional Behavior
I was very impressed with professional behavior, including his knowledge and understanding of HVAC systems.
John14: Six
Prompt, Clear, and Very Helpful
Jon Harris 38 was prompt, very clear in his recommendations, and very helpful.
Jeffrey Metzner
Our technician did a good job
Our technician did a good job, but they are expensive.
Joe Stoker
Pete was awesome
Pete was awesome. Super professional and took care of me.
Logan Tyler
Unclogged a main drain on short notice
They were able to come out on short notice over the weekend to unclog a main drain. They were very knowledgeable and focused on providing quality/value service.
Greg Lehnhoff
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.
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
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.
Common Questions
What is the difference between commercial and residential HVAC systems?
Commercial HVAC systems are designed for larger spaces and more complex needs, offering greater capacity and more flexibility in zoning and controls. Residential systems are smaller and geared towards individual homes.
Why is HVAC maintenance important?
Regular HVAC maintenance ensures optimal performance, improves air quality, reduces energy costs, and extends the life of the equipment. It prevents potential costly repairs by identifying issues early on.
How often should a commercial HVAC system be serviced?
It is recommended to service a commercial HVAC system at least twice a year. Regular maintenance ensures efficient operation, prevents unexpected breakdowns, and prolongs the lifespan of the equipment.
What factors affect the cost of a commercial HVAC system?
The cost of a commercial HVAC system depends on the size of the building, the specific needs of the space, the type of system selected, and installation complexities. Get a detailed quote based on an assessment by a professional.
