Proudly Serving Longmont, CO and the Surrounding Areas Since 1982!

Reliable HVAC Services in Longmont, CO – Heating, Cooling, and Indoor Air Quality Experts

Committed to Comfort, Dedicated to Service

With over 43 years of experience, SAC Mechanical is Boulder County’s go-to choice for reliable, energy-efficient HVAC solutions. As a family-owned and operated company based in Longmont, CO, we specialize in providing expert heating, cooling, and indoor air quality services for both residential and commercial clients. Whether you need fast AC repairs, high-efficiency furnace installations, or advanced air quality enhancements, our certified technicians have the expertise to handle it all.

At SAC Mechanical, we prioritize comfort and efficiency, offering tailored solutions that reduce energy costs, improve indoor air quality, and extend the life of your HVAC systems. From smart thermostats and ductless mini-splits to commercial rooftop units and air purification systems, we use cutting-edge technology to ensure your space stays comfortable year-round.

Discover why SAC Mechanical is trusted by homeowners, businesses, and property managers across Boulder County.

Call us today to schedule your service and experience the difference that expert HVAC care can make.

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Contact SAC Mechanical—We’re ready when you need us.

Why Choose SAC Mechanical for Your HVAC Needs?

✅ Energy-Efficient Solutions: Save on energy bills with eco-friendly, high-efficiency systems.
✅ Comprehensive Services: From routine tune-ups and detailed assessments to emergency repairs, we cover it all.
✅ Customer-Centric Approach:  Transparent pricing, personalized service, and a 100% satisfaction guarantee.
✅ Experienced Professionals:  Over 40 years of local expertise in HVAC installations, repairs, maintenance, and thorough review of your system’s condition.

Explore Our Professional HVAC Services in Colorado

Customized Comfort for Every Season

Experience top-notch HVAC services in Colorado with SAC Mechanical. Whether it’s the chilly winters or the scorching summers, our expert technicians deliver reliable and energy-efficient solutions tailored to your specific needs. We offer precise installations, guiding you on whether to repair or replace your system. Our proactive maintenance services help you maintain optimal performance, and our emergency repairs ensure that any issues are addressed quickly. We are committed to providing unmatched performance and long-term comfort for homes and businesses throughout the state.

We provide same-day service availability for urgent needs, ensuring that your issues are addressed promptly and professionally. Our technicians are skilled in inspecting, repairing, and maintaining heat systems, helping to keep your home comfortable year-round. Customers frequently express their satisfaction and appreciation for our high-quality service and professionalism. Our technicians take the time to communicate with you, clearly explaining any issues and the proposed solutions. We are available throughout the week, including weekends, to meet your needs.

❄️ Air Conditioning Services

Beat the heat with professional AC installation, repairs, and energy-efficient cooling solutions.

🔥 Heating Services

Keep your home cozy with expert furnace installation, heat pump maintenance, and emergency heating repairs.

🌬️ Indoor Air Quality

Breathe cleaner, healthier air with our air filtration, humidification, and duct cleaning services.

💧 Water Heater Services

Enjoy reliable hot water with expert water heater installations, repairs, and maintenance.

🔌 Home Electrification

Upgrade to modern, efficient energy systems for a greener, smarter home.

What Our Customers Are Saying

Stan and Harrison just left here a minute ago. They did a great job on the service they performed today. I just wanna brag on them as best I possibly can. 5 stars are not enough. They’re really pros, obviously, and gentlemen on top of that. They explained everything in ways I could understand it, showed me things they found, and asked if I had any questions, and I did, and they answered them. Man, next time I have service, I want those guys to come back out. Just really happy about this, and just wanted to let you know!

- Ron T
Rating: 5

SAC is our go to for all of our HVAC needs. They’ve been servicing our systems for several years and have been nothing but thorough and professional. Most recently we replaced our AC unit, and there process was smooth and fast. We love these guys and highly recommend them for your heating and cooling needs!

- Tim M
Rating: 5

We just had a service call for a water heater issue and SAC went beyond our expectations by responding with a quick and high quality oriented solution. We have used them in the past for heating and A/C equipment issues and installations and have had a similarly excellent experience. I recommend them without any reservations.

- Pete B
Rating: 5

Trusted by the Longmont Community for Over 40 Years

Integrity

Integrity stands at the core of every HVAC service, building a foundation of trust with each customer.

Honesty

Honesty guides every transaction so our clients fully understand their options and services.

Professionalism

Professionalism shines through with each project, reflecting high standards and meticulous attention to detail.

Fairness

Fairness underpins all pricing and service agreements, creating a balanced and just experience for every client.

Customer-First HVAC Solutions For Every Season

We understand that HVAC issues can be unexpected, which is why we offer flexible financing, responsive emergency services, and tailored maintenance plans to keep your systems running efficiently. With SAC Mechanical, you can rest assured that all your HVAC needs are covered for complete peace of mind. Our professional team is always respectful when they enter your home, treating your space with care. The friendly team members are dedicated to providing you with reliable and personable service. From peak summer cooling to reliable winter heating, SAC Mechanical is your one-stop solution for HVAC comfort.

Contact SAC Mechanical today or complete our online contact form to schedule your next HVAC service.

Explore Growth and Savings with SAC Mechanical in Colorado

At SAC Mechanical, we go beyond HVAC services, offering a range of opportunities to enhance your experience. From career growth to flexible financing options, discover how we can support your comfort and financial goals.

Careers in Colorado

Join a dedicated team of HVAC professionals in a supportive, growth-focused environment. Build a rewarding career with us and make a difference in the Colorado community.

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Flexible Financing Options

Stay comfortable without the financial stress. Take advantage of our flexible financing plans designed to make HVAC upgrades and repairs more affordable.

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Specials and Savings

Save on your next HVAC installation, repair, or maintenance service with our exclusive specials. Enjoy premium comfort without breaking the bank.

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Great Service Starts with Great Products – Trusted HVAC Solutions in Longmont, CO

Exceptional HVAC service relies on premium products. That’s why SAC Mechanical partners with industry leaders like Navien, RGF, Lennox, AprilAire, and others, renowned for their innovative and reliable HVAC technologies. From energy-efficient furnaces from Lennox to advanced air purification systems from RGF and high-performance humidifiers from AprilAire, our carefully selected products ensure maximum comfort, energy savings, and air quality for Colorado homes and businesses.

Our commitment to quality means investing in HVAC systems that deliver lasting benefits, support sustainable practices, and enhance overall system performance. We make your comfort our priority.

RGF air purification Technologies Logo
Aprilaire Logo
The Unico System Logo
LG Air Conditioning Technologies Logo

Experience Exceptional HVAC Services in Colorado

Connect with SAC Mechanical today and experience unparalleled HVAC service. Our Colorado-based team is ready to assist you with all your heating, cooling, and air quality needs, ensuring comfort and satisfaction for every customer.

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