When you choose Service First Heating & Air, you’re getting more than just repairs, you’re choosing peace of mind. We’re a Manassas, VA-based HVAC company that’s dedicated to quality and built on relationships. Our crew shows up when we say we will, and we stand behind our work.
From family homes in Sudley, VA to bustling commercial properties in Manassas, VA and Gainesville, VA, Service First Heating & Air provides full-spectrum HVAC care that fits your space and needs. Our Commercial HVAC contractor services are built to keep offices, shops, and other workspaces running efficiently year-round, while our Residential HVAC contractor team handles everything from small repairs to full system upgrades in Manassas Park, VA and Bristow, VA. We offer thorough diagnostics, proactive maintenance, and heating system repair designed to prevent costly surprises and keep your system performing at its best.
Our team is trusted across Manassas, VA for consistently reliable service and dependable heating and cooling solutions. With years of experience and a deep understanding of the local climate, Service First Heating & Air delivers personalized HVAC solutions that stand the test of time. Whether you need emergency repairs, routine maintenance, or a brand-new system, we tailor every job to fit your home and budget.
We pride ourselves on building lasting relationships through honest service, quality workmanship, and a genuine commitment to customer satisfaction. It’s not just about fixing systems—it’s about creating comfort you can rely on year-round.
When it comes to your home comfort, we don’t cut corners—we deliver peace of mind with every call
Service First Heating & Air is proud to be the team you choose for HVAC services.
In Manassas, VA, cold winters and hot, humid summers can take a toll on your HVAC system. These shifting seasonal demands mean your equipment has to work harder—and that makes regular maintenance and efficient upgrades more important than ever.
At Service First Heating & Air, we help homeowners stay ahead of extreme weather by ensuring their systems are ready for anything. Whether it’s a mid-winter furnace tune-up or a pre-summer AC check, our services are designed to boost performance, extend system life, and reduce energy costs—all while keeping your home comfortable year-round.
Instead of waiting around, take time to explore while we service your system. Visit the Manassas National Battlefield Park, walk through Old Town, or stop by the Manassas Museum. We’ll handle the HVAC work while you enjoy the best your city has to offer.
Grab a bite at one of the local cafés or browse the shops along Center Street. When you return, your home will be comfortable and your system running smoothly.
sac man2025-04-14Trustindex verifies that the original source of the review is Google. Service first are goods guys. i took there recomendation on a cracked drip pan replacement on my up stairs unit last year. man iam glad i did! After working on installing new insulation up in the attric i had about 1/4 inch of condisation/ water in the pan so happy they made that recomindation. Saved me! Been using them for servicing three units on my property and they have thoughly gone threw each unit and made recomendations to maximize effeciancy and or safty or longgevity for each unit. I will be taking there recommendatio for action. Jim Dunemann2025-04-05Trustindex verifies that the original source of the review is Google. Jerry and his install crew were on time a very professional. They answered any and all questions we had. Jerry provided the best solution for our comfort resolving 15 years of huge temperature discrepancies between various parts of our home. It was an extreme pleasure dealing with an owner/operator you can trust! The install of our new furnace and A/C is extremely well done. He and his crew go above! Jeri Burke2025-04-02Trustindex verifies that the original source of the review is Google. Service First replaced my HVAC in 2022 and have maintained it since. You could not work with nicer people, very professional and courteous. I recommend them highly. Gary Carper2025-04-01Trustindex verifies that the original source of the review is Google. Super friendly and informative customer service! Explained everything and arrived and finished in prearranged timeline. Water heater install looks and works great! Would recommend every day! Mike Williams2025-03-25Trustindex verifies that the original source of the review is Google. Service First always arrives early, do great work. They educate you about the service completed and your unit. Seth came last, he's a great technician and good guy. Jim Lawson2025-03-17Trustindex verifies that the original source of the review is Google. Service First Heating and Air came to our house today to install a new unit. They sent plenty of service people to install, they ran all tests, taught us how to use the new, etc. They were all very polite and seemed to know exactly what they were doing. They are probably not the most inexpensive but they are certainly not the most expensive, what they are, are qualified technicians who did an excellent job. Mardie Amery2025-03-17Trustindex verifies that the original source of the review is Google. I love this company!! Professional and personable, I am so happy to know Seth will answer if I need him!!Load more
Homeowners throughout Manassas, VA, Manassas Park, VA, Sudley, VA, Bristow, VA, and Gainesville, VA trust Service First Heating & Air for HVAC services that put comfort and reliability first. We’re not just another HVAC company—we’re your neighbors, committed to providing personalized solutions that last. Whether you’re dealing with a failing system or planning an energy-efficient upgrade, our team delivers quality without the stress.
From clear recommendations to dependable follow-through, we make sure every visit is focused on comfort, care, and lasting results. We treat every home as if it were our own—because to us, every customer is part of the Service First family.
Here’s what sets us apart:
Our highly trained professionals deliver expert service on every visit.
We install top‑quality equipment backed by industry‑leading warranties.
Enjoy peace of mind knowing our workmanship is fully guaranteed.
Flexible payment plans and exclusive savings for seniors, veterans, and first responders.
24/7 support to resolve unexpected HVAC issues whenever they arise.
Transparent pricing with no surprises—get a quote before any work begins.
Personalized service rooted in community trust and dedication.
Proactive care to extend equipment lifespan and maximize energy efficiency.