Trusted HVAC Services in Fort Smith, Poteau, and Surrounding Areas

At Clark HVAC, we provide fast, affordable, and honest heating and air conditioning services across Fort Smith, Arkansas and all of Eastern Oklahoma. Whether you need emergency AC repair, a full HVAC installation, or just want someone to take a real look at your system without trying to upsell you, we’ve got your back. We’re family-owned, locally based in Spiro, and we show up when we say we will — every single time.

We handle everything from small repairs to full installs. If your air conditioner isn’t cooling like it should, your furnace stopped working, or you're building a barndominium or shop that needs ductless mini-splits, we know how to get the job done right. Our team is fully licensed and insured, and we’ve worked with all major brands and systems. No runaround, no nonsense — just real results and solid work.

We specialize in:

  • Air conditioner repair and same-day AC service

  • Furnace repair and full heating system replacement

  • Ductless mini-split installation and repair

  • Indoor air quality solutions (filters, UV lights, and more)

  • Full HVAC installs for new construction and remodels

  • Preventative maintenance and seasonal tune-ups

  • 24/7 emergency HVAC repair when you need it most

We proudly serve homeowners and businesses in Fort Smith, Spiro, Pocola, Poteau, Sallisaw, Charleston, Alma. If you're in the River Valley or Eastern Oklahoma, we can take care of you.

Need financing? We offer 0% financing options on new HVAC installs and even repairs in many cases. We make it easy to get the comfort you need without stressing over the bill. Just ask — we’ll walk you through it in plain English.

We’ve built our reputation on being honest, reliable, and easy to work with. Just check out our 5-star reviews. Customers call us because we don’t cut corners, we don’t charge hidden fees, and we actually fix the problem instead of selling you things you don’t need.

If you’re dealing with HVAC issues or just want a second opinion before you replace your system, give us a call. We’re available 24/7 and always happy to help.

White Clark HVAC service truck parked on a construction site with new residential homes under construction in the background.

Get Fast HVAC Service When You Need It Most

Get your heating & cooling systems running smoothly with fast, reliable service from the HVAC pros. Serving Fort Smith, Spiro, and the River Valley.

24/7 Emergency Service Available

About Us

Welcome to our family-owned business. With a commitment to honesty and integrity, we take pride in delivering high-quality services that you can trust. Our family has built this company on the values of hard work and dedication, ensuring that every job we undertake is completed with precision and care.

At our core, we believe in treating our customers like family. We understand that choosing a service provider can be a daunting task, which is why we strive to create a positive experience with every interaction. Our team is dedicated to going above and beyond to meet your needs, ensuring that you are satisfied with our work.

As a family-run operation, we care deeply about our community and the relationships we build. Our goal is to stand out not only through the quality of our services but also through our commitment to excellent customer service. We are here to listen to your concerns, answer your questions, and make your experience as seamless as possible.

Thank you for considering us for your needs. We look forward to serving you with honesty and diligence.

What Our Customers Are Saying

  • ⭐️⭐️⭐️⭐️⭐️ "My AC quit in the middle of a heat wave. Clark HVAC showed up same day and had it cooling again in no time. Total lifesavers!"
  • ⭐️⭐️⭐️⭐️⭐️ "Our AC quit in the middle of the night. I called Clark HVAC first thing in the morning and they were here within hours. Got it blowing cold again fast!"
  • ⭐️⭐️⭐️⭐️⭐️ "They replaced our unit and had the whole thing installed and running in one day. Left the place cleaner than they found it, too."