Thornton HVAC Repair Call for More Information Today!970-431-6574
Serving Thornton, Adams County and beyond
HVAC Repair Company Thornton
Nothing disrupts your life quite like an HVAC breakdown. That's where Allen Service comes in, offering prompt and professional HVAC repair services to get your system running smoothly again—so you can get back to your day.
Allen Service’s friendly and professional team tackles each HVAC repair with care, using the latest tools and techniques to ensure lasting solutions. We can repair all types of heating, cooling, and ventilation systems and are often able to troubleshoot and fix the problem on the spot. From handling minor issues to complete breakdowns, Allen Service is there to get the job done right!
Facing HVAC troubles? Reach out to Allen Service at (970) 431-6574 for expert HVAC repair services that keep you comfortable.
Thankful For These Reviews
5.04000 Reviews
j"Allen Service was great"
He was polite, explained his work very clearly, answered all my questions and was professional.
jerri hebert
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
W"Completed the job quickly and professionally"
He also gave me a good rundown of what's going on, preventative solutions, and made us feel super comfortable.
Will Holloway
P"Allen Service HVAC tech performed an outstanding job!"
This was by far the most informative and thorough inspection I’ve ever had.
Paul Bowles
A"Cole is awesome!"
He’s courteous and kind, a great technician, and always answers my questions and explains things.
Alexandra Massey
m"Highly Recommend"
Sam from Allen Service did a great job inspecting the HVAC system.
morkos henen
C"He Was Courteous and Knowledgeable"
He was courteous, knowledgeable, and skilled.
Clint Schaeffer
L"Our serviceman was very professional"
He explained the processes he used to identify our problems and what our options were moving forward.
Laurena Foegen
G"What a Great Experience with Allen Service"
Justin was courteous, professional, and very knowledgeable.
GM Castellano
J"Great Quick Service"
Great quick service with lots of information.
Justin Wallman
S"Knowledgeable and Courteous Service"
They are knowledgeable and competent as well as courteous.
Scott Pfund
E"He was very kind and very insightful"
He was very kind and very insightful in what he was doing.
Eva Dean
A"Easton was great!"
Very knowledgeable and gave great service.
Amy
P"Yearly Inspection Help"
Vincent came for our yearly inspection.
PAT JOYCE
J"Jasmine performed the most extensive evaluation"
Very knowledgeable, professional and delightful person; I will absolutely request her again.
John Connell
K"Service Was Outstanding"
Very thorough and pleasant. Service was outstanding.
Kevin Manweiler
W"Allen Service Continues to Impress"
Cole was extremely knowledgeable and explained thoroughly in detail what needed to be done and why.
William Simmons
S"She fully deserves a 5 star rating"
The technician we had this time was excellent. Jasmine Stiggers is skilled, knowledgeable, and personable.
Susan W
B"Answered My Service Call Quickly"
Vince was here promptly and dealt with our issue efficiently.
Betsy Lee
C"Jeremy Is the Tech You Want"
Jeremy is the tech you want servicing your HVAC!
Cole Thompson
C"Brandon Freed Did a Great Job"
Helped with all questions and very knowledgeable.
Charles Schneider
p"Answered Questions Clearly"
Explained what was being done and why.
phoneman91
B"Same-Day Help from Allen Service"
Cole was professional, communicative, helpful, and efficient.
Brittany Richardson
R"We couldn't be happier"
Zach went over our system completely and gave us service and maintenance advice.
Roger Dudley
D"My experience was great!"
Zack and Sam were prompt, efficient, good at communicating, certified, knowledgeable, and friendly!
Donnie Farris
K"Zack Was Very Helpful"
Zack was very helpful and got us back operating ASAP.
Khristian Matthews
D"He is the best!"
Very knowledgeable and helpful! Appreciated his courtesy and friendliness too!
Debra Bartleson
D"He is very knowledgeable"
He is very knowledgeable and explained everything.
Delana Schneider
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
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
Completed the job quickly and professionally
Jon came out quicker than expected. Put in a lot of hard work and completed the job quickly and professionally. He also gave me a good rundown of what's going on, preventative solutions, and made us feel super comfortable that we had the right guy on the job!
Will Holloway
Allen Service HVAC tech performed an outstanding job!
Allen Service's HVAC tech performed an outstanding job! I have had several inspections over the years in different areas with different vendors. This was by far the most informative and thorough inspection I’ve ever had. Highly recommend Allen Service!
Paul Bowles
Cole is awesome!
Cole is awesome! He’s courteous and kind, a great technician, and always answers my questions and explains things, which I appreciate. Thank you, Cole!
Alexandra Massey
Highly Recommend
Sam from Allen Service did a great job inspecting the HVAC system. Took care of checking every single detail. Highly recommend.
morkos henen
He Was Courteous and Knowledgeable
Sam C. was very good today. He was courteous, knowledgeable, and skilled. His estimated improvements will let us trust our HVAC systems much longer.
Clint Schaeffer
Our serviceman was very professional
Our serviceman was very professional and very patient. He explained the processes he used to identify our problems and what our options were moving forward. We felt we were able to make an informed decision about the best way to proceed to repair the issue. Thank you, Allen Service.
Laurena Foegen
What a Great Experience with Allen Service
What a great experience with Allen Service, from my first call to report my repair issue to letting me know my technician's name and that he was on his way. My technician Justin arrived, fixed my problem, showing me and explaining everything to me along the way. Justin was courteous, professional, and very knowledgeable. So happy that customer service is back… at least with Allen Service.
GM Castellano
Great Quick Service
Great quick service with lots of information, choices, and top parts.
Justin Wallman
Knowledgeable and Courteous Service
Good, thorough inspection and review. Only lacking info on heat register cleaning or possible cleaning. Also, $89 is somewhat high when other companies do it for $49. But they did the original job, so I stayed with them. They are knowledgeable and competent as well as courteous.
Scott Pfund
He was very kind and very insightful
He was very kind and very insightful in what he was doing. He brought information into this that I didn’t know about HVAC, so thank you, and I appreciate him.
Eva Dean
Easton was great!
Easton was great! Very knowledgeable and gave great service. There was some confusion with the cost of service, and he was able to give it to us for free, so that was a bonus. I loved them when they were Quality 1st, and they’ve been able to continue that great service as they transitioned to Allen Service.
Amy
Yearly Inspection Help
Vincent came for our yearly inspection. He added a screw to the filter frame to make it easier to access. We are very grateful.
PAT JOYCE
Jasmine performed the most extensive evaluation
Jasmine performed the most extensive, logical evaluation of our aged system we've ever experienced. Very knowledgeable, professional and delightful person, I will absolutely request her again. You're the greatest!
John Connell
Service Was Outstanding
Dallas Longstreath is a great technician. Very thorough and pleasant. Service was outstanding.
Kevin Manweiler
Allen Service Continues to Impress
Cole was extremely knowledgeable and explained thoroughly in detail what needed to be done and why. Very courteous and polite. Hope to see him again. Allen Service continues to impress in every way!
William Simmons
She fully deserves a 5 star rating
I am always satisfied with Allen Service, but the technician we had this time was excellent. Jasmine Stiggers is skilled, knowledgeable, and personable. She is detail oriented, and was very good at explaining to us what she had found. She fully deserves a 5 star rating.
Susan W
Answered My Service Call Quickly
Allen Service answered my request for a service call for my HVAC system very quickly. Vince was here promptly and dealt with our issue efficiently. He was very knowledgeable about our Rheem system. Thanks, Vince.
Betsy Lee
Jeremy Is the Tech You Want
Jeremy is the tech you want servicing your HVAC! He was very helpful and taught me a lot during his visit. I’ll request him next year.
Cole Thompson
Brandon Freed Did a Great Job
This service was included in our service contract. Brandon Freed did a great job. He helped with all questions and was very knowledgeable. I would have him come back for future support with the HVAC system in our home.
Charles Schneider
Answered Questions Clearly
Answered questions and explained what was being done and why.
phoneman91
Same-Day Help from Allen Service
I received help and a technician visit on the same day I called Allen Service. Cole was professional, communicative, helpful, and efficient. The job was taken care of and I’m satisfied with the service. I would recommend again!
Brittany Richardson
We couldn't be happier
Zach went over our system completely and gave us service and maintenance advice. We couldn't be happier.
Roger Dudley
My experience was great!
My experience was great! Zack and Sam were prompt, efficient, good at communicating, certified, knowledgeable, and friendly! I will use Allen Service for all my HVAC needs.
Donnie Farris
Zack Was Very Helpful
Zack was very helpful and got us back operating ASAP. I would definitely recommend for any HVAC work!
Khristian Matthews
He is the best!
Nathan W., the electrician, was at my home for an inspection. He is the best! Very knowledgeable and helpful! Appreciated his courtesy and friendliness too!
Appreciate Zach and the entire HVAC system staff too! Allen replaced AC/heat and did a wonderful job!
The entire office staff at Allen are great too, friendly and helpful!
Debra Bartleson
He is very knowledgeable
He is very knowledgeable, though, and explained everything. I hope he will be our regular technician!
Delana Schneider
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
24/7 Emergency HVAC Service
We’re on call day or night to restore your comfort fast.
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.
Same-Day HVAC Service You Can Trust
Fast, dependable repairs and installations—day or night, all year.
