Denver HVAC Furnace Installation
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    Denver Furnace Installation
    Call for More Information Today!
    970-431-6574

    Serving Denver and beyond Furnace Installation Company Denver

    If you need to replace an old furnace or are looking to upgrade to something more powerful and energy efficient, Allen Service is here to assist you. Our professional furnace installation services help ensure the safety and reliability of your new furnace.

    Allen Service excels in providing seamless furnace installation services, guiding you through every step—from selection to installation. Our experts recommend the best solutions tailored to your needs and budget, ensuring a warm and comfortable home in any weather. With a focus on energy efficiency and long-term reliability, Allen Service’s furnace installation services stand out.

    Ready for a new furnace? Contact Allen Service at (970) 431-6574 to start with a consultation.

    Thankful For These Reviews
    5.0 3000 Reviews
    • P
      "I highly recommend them"
      They were prompt in getting the appointment set up for install, and I appreciated their great communication, promptness, and professionalism!
      Pia Fardal
    • J
      "Zack did a fantastic job"
      He was friendly and professional.
      Jacob Anderson
    • S
      "Did a great job installing a new furnace"
      Jason and Charlie did a great job ripping out my old furnace and installing a new one.
      Salvatore Vigil
    • R
      "Extremely polite and knowledgeable"
      Charles was extremely polite and knowledgeable. The crew finished the job within the timeframe promised and left my house clean.
      Roberta Camargo
    • M
      "Carson replaced my ancient furnace"
      Carson replaced my ancient furnace with patience and kindness.
      Martha Neth
    • S
      "Overall a Quality Team"
      Jason was thorough, mindful, and did quality work, making sure at each step that we were satisfied.
      Sara Wright
    • C
      "Would highly recommend Now Heating and Air"
      They were very fast, cleaned up quickly, and took the time to explain how it works.
      Clifford Lopez
    • C
      "I would definitely recommend them"
      Estevan and Eddie worked tirelessly to install a furnace in my house.
      Carolyn Wilson
    • R
      "Exceptionally Good Service and Work"
      The service, consultation, and work have been exceptionally good.
      R.J. Ross
    • K
      "Will Be Working With This Company Again"
      Justin was very friendly and let us know what was wrong.
      Kelly
    • R
      "Prompt and knowledgeable service"
      Quality First Service Group was prompt and knowledgeable.
      Richard Griffin
    • A
      "Friendly, professional, and amazing"
      Mary and Johnny showed up 4 hours early, explained everything, installed everything, and made sure it was working at 100% before they left.
      Airin Raskin
    • C
      "Great Service, Very Friendly and Trustworthy"
      Great service, very friendly and trustworthy.
      Chris M. Tafoya
    • D
      "Excellent work replacing the furnace"
      The work was completed in a timely manner and with high-quality workmanship.
      David Vartuli
    • J
      "The installers did a wonderful job"
      The installers did a wonderful job in the installation, and they were very friendly.
      James Allen Davis Jr.
    • J
      "Fantastic Furnace Install Job"
      Showed up on time, cleaned up after himself, explained what he was doing and why, and stayed late to make sure the job was done well.
      Jeff McDonough
    • D
      "Miguel Oxaca was awesome"
      Very knowledgeable and personable guy!
      Don Green
    • L
      "Great Service and Communication"
      Great service, communication, workmanship, and cleanliness.
      Larry Dreyer
    • P
      "Furnace was installed quickly, carefully"
      Furnace was installed quickly, carefully, and the position was improved for any future maintenance.
      Phil Morris
    • J
      "Very kind and professional"
      He went out of his way and drove an hour to pick up four portable heaters for us to use before our furnace installation.
      Jake Eustrom
    • S
      "Went Above and Beyond"
      Victor and Albert went above and beyond for installing our furnace and AC system!
      Samantha Vigil
    • L
      "Now Heating and Air Came to the Rescue!"
      Now Heating and Air came to the rescue during this last cold spell.
      Lisa Tanguma
    • J
      "Never Forced Into Anything"
      He didn't make up stuff like other companies do to make a buck.
      Jeffrey Klunzinger
    I highly recommend them
    I called last minute to have my furnace looked at. It was already 25 years old. Justin came out and gave me an honest assessment on fixing the problem. He was professional and didn’t try to convince me one way or the other to fix it or buy new. He explained a lot of things to me, and I appreciated his transparency. Ultimately, I did choose to purchase new since my furnace was so old. Justin referred me to Dylan, who gave me several options for a new furnace. Dylan was patient in explaining my choices and also offered some finance plans that were available and helpful since these new systems aren’t cheap! They were prompt in getting the appointment set up for install, and I appreciated their great communication, promptness, and professionalism! I highly recommend them if you’re looking for a furnace / AC company!
    Pia Fardal
    Zack did a fantastic job
    Zack did a fantastic job of explaining the process as he quoted our furnace. He was friendly and professional.
    Jacob Anderson
    Did a great job installing a new furnace
    Jason and Charlie did a great job ripping out my old furnace and installing a new one with improved duct work. They did the whole job in 6 hours.
    Salvatore Vigil
    Extremely polite and knowledgeable
    We came home Sunday night to a very cold house. We called Quality First on Monday morning, and they sent a technician out right away. After a thorough inspection, we decided to replace our old furnace (it was 18 years old). The sales consultant came over on Tuesday, we went over the options, and on Wednesday they came and replaced our old furnace. Charles was extremely polite and knowledgeable. The crew finished the job within the timeframe promised and left my house clean, as if no job was performed. All the staff at Quality First were pleasant, polite, professional, and very knowledgeable!
    Roberta Camargo
    Carson replaced my ancient furnace
    Carson replaced my ancient furnace with patience and kindness. I am grateful to once again have regular heat!
    Martha Neth
    Overall a Quality Team
    We needed a new furnace (ours was leaking carbon monoxide). Chance the sales representative took his time to help us understand our options without any kind of pressure, and we enjoyed the process of deciding on our options in part due to his easy-going, informative style. Once we decided to move forward, Jason installed our furnace. He was thorough, mindful, and did quality work, making sure at each step that we were satisfied. Further, Jason was friendly, knowledgeable, kind, and his presence in our home during the installation felt both safe and peaceful, which I appreciated since there was significant time during the installation when I was home but my husband was not. Further, our cat who normally hides from strangers kept hanging out around the crawl space opening above where he was working. So funny to write in a review, but true that our cat also demonstrated that he felt safe with Jason. The initial tech Cole also rocked and also put me at ease. So overall a quality team who did a great job and we appreciate them.
    Sara Wright
    Would highly recommend Now Heating and Air
    Jordan and his assistant came out and installed our new Amana furnace today. They were very fast, cleaned up quickly, and took the time to explain how it works. Miguel, in sales, was very good at getting us an affordable option. Would highly recommend Now Heating and Air.
    Clifford Lopez
    I would definitely recommend them
    Estevan and Eddie worked tirelessly to install a furnace in my house. It was not an easy project—second story in the ceiling. It was a very small space, and they had to make numerous trips up and down stairs carrying heavy equipment. They were respectful of me and my house. I would definitely recommend them.
    Carolyn Wilson
    Exceptionally Good Service and Work
    What started as heating maintenance turned into ordering a new furnace, which has not yet been located. Meanwhile, a new steam humidifier has been installed on the old furnace. The service, consultation, and work have been exceptionally good.
    R.J. Ross
    Will Be Working With This Company Again
    Justin was very friendly and let us know what was wrong. He couldn't work on it but helped us get someone to get a new furnace fast. We will be working with this company again.
    Kelly
    Prompt and knowledgeable service
    Quality First Service Group was prompt, knowledgeable, and gave me an estimate for various replacement furnace options.
    Richard Griffin
    Friendly, professional, and amazing
    My furnace went out right before temps were going to drop below 0 degrees. Mary (and Miguel - sales rep) at NOW saw my work order come through and immediately prioritized my replacement so that I had a new furnace and my pipes weren’t in danger of bursting. Mary and Johnny showed up 4 hours early to my house, explained everything, installed everything, and made sure it was working at 100% before they left. Friendly, professional, and all around an amazing company. Thanks again.
    Airin Raskin
    Great Service, Very Friendly and Trustworthy
    Great service, very friendly and trustworthy. I had a furnace installed and the installer, Johnny, was very professional. He explained everything to me. I would definitely recommend.
    Chris M. Tafoya
    Excellent work replacing the furnace
    Many thanks to Quality First and Carlos V for the excellent work replacing the furnace at my residence. The work was completed in a timely manner and with high-quality workmanship. I am completely pleased with the results and recommend them to everyone. If you want great, timely service this is the company to call.
    David Vartuli
    The installers did a wonderful job
    The installers did a wonderful job in the installation, and they were very friendly. They were responsive to my inquiries and were quick to remedy any issues. Each tech person made every effort to answer my questions and provided me with clear guidance about my furnace replacement. Zachary did a wonderful job this Monday for my heating tune-up. Thank you for coming out to service the unit.
    James Allen Davis Jr.
    Fantastic Furnace Install Job
    Sam Criswell did a fantastic job with a furnace install. Showed up on time, cleaned up after himself, explained what he was doing and why, stayed late to make sure the job was done well, and will be coming back for QA/QC testing. Great work, Sam, and thank you.
    Jeff McDonough
    Miguel Oxaca was awesome
    Miguel Oxaca for NOW Heating and Air was awesome!! Very knowledgeable and personable guy! It was a pleasure meeting with him for a bid on our furnace replacement! Thanks so much for your time, Miguel!! Don P.S. Still getting bids, have not hired anyone yet.
    Don Green
    Great Service and Communication
    Diagnosed a bad furnace on a Monday and installed a new furnace two days later. Great service, communication, workmanship, and cleanliness. Thank you.
    Larry Dreyer
    Furnace was installed quickly, carefully
    Furnace was installed quickly, carefully, and the position was improved for any future maintenance. Workers were respectful, tidy, and helpful.
    Phil Morris
    Very kind and professional
    Jeremy was friendly, professional, and courteous. He explained what he was doing throughout the process. He also went out of his way and drove an hour to pick up four portable heaters to bring back for us to use before our furnace installation. Very kind!
    Jake Eustrom
    Went Above and Beyond
    Victor and Albert went above and beyond for installing our furnace and AC system! So respectful and helpful! Will definitely recommend to everyone I know and will be back with all of our needs in the future.
    Samantha Vigil
    Now Heating and Air Came to the Rescue!
    Now Heating and Air came to the rescue! The townhome I moved into had a furnace that began making strange noises during this last cold spell. I now have a new furnace that keeps the entire home warm. Thank you, Now Heating and Air!
    Lisa Tanguma
    Never Forced Into Anything
    Anthony was very personable, professional, and gave information to me straight. He didn't make up stuff like other companies do to make a buck. After servicing my furnace, he found some things wrong and laid out all the options in order to get it to work. I went with a total replacement furnace which brought everything to code. I enjoyed having him in my house to do the work. Before making the ultimate decision on a replacement, Tera, Anthony's supervisor, got in the conversation about fixing the existing furnace or replacing it entirely. They laid out the groundwork, price, install time, and date, but the final decision was mine and mine alone. Never forced into anything. I would highly recommend this company to friends and family.
    Jeffrey Klunzinger
    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
    • 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
    • Commerce City
    • Adams County
    • Denver
    • Aurora
    • Thornton
    • Lakewood
    • Westminster
    • Arvada
    • Broomfield
    • Northglenn
    • Brighton
    • Centennial
    Call Us Today! 970-431-6574
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