AC Repair in Fort Smith, AR
When your AC quits in the River Valley heat, you need someone fast and honest. Same-day service, 24/7 emergency response, flat-rate pricing, and 0% financing for new installations. No call centers — just real local techs.
Same-Day Service
Local. Honest. Fast.
We're not a national franchise or a call center. We're a family-owned HVAC company that answers the phone, shows up the same day, and fixes the problem without an upsell pitch.
Same-Day Response
Call before noon and we'll do everything we can to be at your Fort Smith home today — including evenings, weekends, and holidays.
Flat-Rate Pricing
You see the price before any work starts. No hourly games, no upsells, no surprise charges at the end of the job.
Family-Run, Local
Family-owned, locally operated. We treat Fort Smith customers like neighbors — because we've been working in this town for years.
0% Financing
Big repair? New system? We offer 0% financing for qualified customers so comfort never has to wait.
Residential & Commercial HVAC, Done Right
From a frozen evaporator coil in July to a furnace that won't light in January — we handle every HVAC need across Fort Smith homes and businesses.
AC Repair
Fast diagnosis & repair for all central AC, mini-split, and heat pump systems.
See our AC repair process →Furnace Repair
Gas, electric & heat pump heating repair. Same-day service for cold snaps.
View heating services →New System Installation
Properly sized, professionally installed high-efficiency HVAC systems.
Get an install quote →Ductless Mini-Splits
Perfect for historic homes, sunrooms, garages, and additions throughout Fort Smith.
Learn about mini-splits →Heat Pump Services
Repair, replacement & maintenance for all heat pump brands.
Heat pump help →HVAC Maintenance
Seasonal tune-ups that lower energy bills and stop breakdowns before they start.
View tune-up plans →24/7 Emergency Service
HVAC emergencies don't wait for business hours, and neither do we.
Get emergency help →Commercial HVAC
Restaurants, retail, offices & warehouses across Fort Smith and the River Valley.
Commercial services →Real Local. Real Fast.
Fort Smith summers are brutal — 95-degree highs, sticky humidity off the Arkansas River, and storms that take out transformers half a dozen times a season. Winters bring ice storms and sudden cold snaps that push furnaces past their limits. We've worked on homes everywhere from the historic Belle Grove District downtown, to the cul-de-sacs of Fianna Hills, the new builds in Chaffee Crossing, the older streets of Park Hill and Sunnymede, and out toward Massard and South Fort Smith.
We know which neighborhoods have undersized ductwork, which subdivisions had the same builder cutting corners on the original install, and which condenser locations get cooked by afternoon sun. That local knowledge means faster diagnostics and a fix that actually lasts. We also cover Van Buren, Barling, Greenwood, Lavaca, Alma, Hackett, and Bonanza.
AC Issues We Fix Every Week in Fort Smith
Fort Smith's humidity, summer storms, and aging housing stock create predictable HVAC failures. Here are the issues our techs diagnose most often across the city.
Frozen Evaporator Coil
Fort Smith's River Valley humidity plus a dirty filter or low refrigerant freezes the indoor coil solid. We diagnose the real cause — not just thaw it and leave.
Failed Capacitor
The #1 cause of "AC won't start" calls during Fort Smith summers. Sustained 95°F heat kills capacitors fast. We stock replacements on every truck for same-day fixes.
Refrigerant Leak
Older systems across Fort Smith — especially in Park Hill, Sunnymede, and downtown — lose refrigerant slowly. If your AC runs constantly but never gets cold, we'll find the leak and seal it right.
Dirty Condenser Coil
Fort Smith's cottonwood, pollen, and dust storms choke outdoor units fast. A professional coil cleaning can drop your electric bill by 10–20% per month.
Clogged Drain Line
Algae and slime love Fort Smith's humid air. A blocked condensate line can flood your attic, ruin sheetrock, or shut your system down entirely.
Storm & Surge Damage
Fort Smith's spring and summer storms hit transformers and outdoor units hard. We diagnose blown contactors, fried control boards, and surge damage same-day.
Not sure which issue you've got? Call (918) 839-3734 and we'll diagnose it the same day across Fort Smith.
Keeping Fort Smith Businesses Running
When your AC quits at a restaurant on Garrison Avenue, customers walk out. When your rooftop unit fails at a retail store on Rogers Avenue, inventory bakes and refrigeration follows. Commercial HVAC downtime costs Fort Smith businesses real money — sometimes thousands per hour. We get that, and we move accordingly.
Clark HVAC services restaurants, retail, offices, warehouses, churches, daycares, salons, gyms, and light industrial buildings across Fort Smith. We work on rooftop package units, split systems, walk-in coolers, makeup air units, and exhaust systems. We can also set up a preventative maintenance contract so your equipment gets tuned up twice a year — and your business stops being surprised by breakdowns during peak season.
Common commercial customers in Fort Smith: property managers, building owners, restaurant operators, small business owners, retail franchisees, churches, and medical/dental offices.
🏢 See Commercial Services7 Signs Your Furnace Won't Make It Through a Fort Smith Winter
Fort Smith winters are short but mean. Ice storms hit the River Valley most years, and sudden cold fronts from Oklahoma push furnaces past their limits. Catch these warning signs before yours quits during the worst week of the year.
Strange Smells at Startup
A musty or burning smell when your heat kicks on for the first time isn't always normal. Could be dust, but could be a cracked heat exchanger.
Yellow Flame, Not Blue
Healthy gas flame should burn steady blue. Yellow or flickering flames mean incomplete combustion — a safety issue you don't want to ignore.
Sudden Spike in Bills
If your AOG or electric bill jumped without weather to explain it, your system is fighting itself. Inefficiency this winter could mean a breakdown by January.
Uneven Heating
Cold rooms upstairs, hot rooms by the thermostat? Could be a blower issue, a duct problem, or a system that's just plain undersized for your home.
Banging or Squealing
New noises mean new problems. Booms at ignition (delayed ignition), squeals (bearings), or rattles (loose ductwork) all need attention before they get worse.
15+ Years Old, No Tune-Ups
Furnaces over 15 years old that haven't been maintained are on borrowed time. A pre-season tune-up can extend life — or tell you it's time to replace.
Schedule a pre-winter furnace tune-up before the rush. Call (918) 839-3734.
How Fort Smith Humidity Quietly Wrecks HVAC Systems
Fort Smith sits right in the middle of the Arkansas River Valley, which means summer humidity routinely climbs past 80% and stays there for weeks at a time. That's brutal on cooling equipment in three specific ways most homeowners don't realize.
1. Your AC works twice as hard. Cooling humid air requires the system to remove both heat and moisture. An undersized or aging unit will run constantly to keep up, driving electric bills up and wearing out motors, capacitors, and compressors years before they should fail.
2. Indoor air quality drops. When indoor humidity climbs over 60% — common in older Fort Smith homes — you start seeing condensation on cold supply registers, musty smells in closets, and dust mites multiplying in carpets and bedding. Long term, that's a recipe for mold inside ductwork — exactly where you don't want it. A properly sized system and a quality indoor air quality solution handles both at once.
3. Coils corrode faster. Persistent moisture eats copper and aluminum. Outdoor condenser coils in Fort Smith yards rust out years before the same units do in drier climates. Annual maintenance and proper coil cleaning catch this early — before a $200 service call turns into a $4,000 system replacement.
We size every system we install for real Fort Smith River Valley conditions — not a generic spec sheet from somewhere with a different climate. That alone is why our installs hold up through 95°F summers and ice-storm winters.
From Call to Cold Air — Fast
No confusing process. No pushy salespeople. Just three simple steps to get your home comfortable again.
Call or Text
Reach us at (918) 839-3734 anytime, day or night. A real human answers and books your visit.
Same-Day Diagnosis
Our Fort Smith tech arrives, finds the exact problem, and gives you a flat-rate quote before lifting a wrench.
Fix It Right
You approve the price. We fix it on the spot when possible, clean up, and your home is comfortable again.
What Fort Smith Neighbors Say
Real homeowners. Real businesses. Real reviews from across the River Valley.
"Excellent company! Diagnosed and fixed my air conditioner same day! Definitely will be using them from now on!"
"I highly recommend this company! Fast, great, friendly service! Our A/C went completely out — they came same day, fixed it fast. Thank you so much guys!"
"Brand new unit installed — fantastic service, easy to work with. ⭐⭐⭐⭐⭐"
Fort Smith HVAC Questions, Answered
Don't see your question? Call (918) 839-3734 and we'll answer it on the spot.
How fast can Clark HVAC get to Fort Smith?
Do you offer 24/7 emergency HVAC repair in Fort Smith?
How much does an HVAC service call cost in Fort Smith?
Do you finance new AC and furnace installations in Fort Smith?
What HVAC brands do you service in Fort Smith?
Do you service commercial properties in Fort Smith?
Do you install mini-splits in Fort Smith for sunrooms and additions?
Why does my AC keep freezing up in Fort Smith summers?
How often should I have my HVAC serviced in Fort Smith?
Can you install a smart thermostat in my Fort Smith home?
Do you do full HVAC system replacements in Fort Smith?
What Fort Smith ZIP codes and neighborhoods do you serve?
Fort Smith Neighborhoods & Surrounding Communities
We service every Fort Smith neighborhood — downtown, north, south, east, and west — plus the surrounding River Valley region.
Cool Comfort in Fort Smith is One Call Away
Whether your AC quit in July, your furnace died on the coldest night of the year, or your commercial unit took out a Garrison Avenue restaurant — Clark HVAC is ready to roll. Call now and get a real tech on the way.
(918) 839-3734Serving All of Fort Smith, AR
From Belle Grove to Chaffee Crossing, Fianna Hills to Park Hill — we cover every Fort Smith neighborhood.
21196 Jake Smith Rd
Spiro, OK 74959
24/7 Emergency Service Available
Last updated: May 2026