Fort Smith · Poteau · Pocola · Spiro
Furnace Repair When Your Heat Quits
No heat, blowing cold, or short cycling? We diagnose gas furnaces, electric furnaces, and heat pumps across Fort Smith and the River Valley — then tell you straight what’s wrong and what it takes to fix it. No scare tactics, no upsell.
- 24/7 Emergency Service
- Licensed & Insured
- EPA Certified
- Upfront Pricing
- Family-Owned, Local
Rated 5.0 on Google
Real reviews from your neighbors across Fort Smith, Poteau, Pocola, Spiro, and the River Valley — posted straight to Google, not written by us.
Sound Familiar?
Common Furnace Problems We Fix
Most heating calls we run in the River Valley come down to one of these. If you recognize yours, give us a call — a lot of them are a same-day fix.
No heat at all
Thermostat is calling but nothing happens. Usually a failed igniter, a tripped safety switch, a bad control board, or no gas getting to the burners.
Blowing cold air
The blower runs but the air is cool. Often a dirty flame sensor shutting the burners down seconds after they light.
Short cycling
Kicks on, runs a minute, shuts off, repeats. Usually a clogged filter, a failing limit switch, or an airflow restriction — and it will burn a furnace up if it is left alone.
Banging, rattling, or squealing
Loud noises on startup or during a run can mean delayed ignition, a worn blower bearing, or loose sheet metal and duct.
Clicks but won’t light
You hear it try and give up. Common causes are a cracked igniter, a bad gas valve, a plugged pressure switch hose, or a blocked flue.
Blower never shuts off
Fan runs nonstop even when the house is warm. Typically a stuck relay, a fan limit control, or a thermostat wired or set wrong.
Weak airflow from the vents
Some rooms never get warm. Could be the filter, the blower, a collapsed or disconnected duct, or a system that was undersized for the house.
Furnace keeps tripping the breaker
Something is drawing more current than it should — often a failing blower motor or a shorted component. Worth getting looked at rather than repeatedly resetting.
If you smell gas, don’t troubleshoot it
Leave the house first, then call your gas utility or 911 from outside. Don’t flip switches, don’t light anything, and don’t restart the furnace.
Same goes for a carbon monoxide alarm going off — get everyone out and call for help. Once the gas company has made it safe, we’ll come out and find what caused it.
What to Expect
How a Furnace Call Works
No mystery, no runaround. Here is exactly what happens from the time you call us.
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You call, we schedule
A real person from our shop in Spiro picks up — not a call center. Same-day whenever we can get a truck to you, and 24/7 if it is an emergency.
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We diagnose it properly
Our tech tests the system end to end instead of guessing at parts: ignition, gas pressure, safeties, airflow, electrical, and the heat exchanger.
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You get straight answers
We show you what we found, walk you through your options, and give you the price before any work starts. If it can wait, we tell you that too.
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We fix it and test it
Repair goes in, then we run the system and confirm it is heating safely and correctly before we pack up.
Gas · Electric · Heat Pump
What We Repair
We service most residential and light commercial heating equipment, whatever brand is hanging in your closet, attic, or crawlspace.
- Hot surface igniters & pilot assemblies
- Flame sensors & thermocouples
- Gas valves & burner assemblies
- Pressure switches & hoses
- High limit & rollout safety switches
- Draft inducer motors
- Blower motors & capacitors
- Control boards & relays
- Transformers & wiring faults
- Thermostats & control wiring
- Condensate drains on high-efficiency units
- Heat exchanger inspection
- Ductwork leaks & airflow problems
- Heat pump defrost & reversing valve faults
- Electric furnace heat strips & sequencers
Straight Talk
Repair It or Replace It?
We would rather fix your furnace than sell you one. But there is a point where repairs stop making sense, and you deserve an honest read on which side of that line you are on.
Usually worth repairing
- The furnace is under roughly 12–15 years old
- It is a single failed part — igniter, sensor, capacitor, board
- The heat exchanger checks out clean
- It has been maintained and this is the first real failure
- The repair costs a small fraction of a new system
Worth pricing a replacement
- A cracked or failed heat exchanger — that is a safety issue, not a maintenance item
- The unit is near the end of its life and parts are getting hard to find
- You have paid for several repairs in the last couple of seasons
- Rooms have never heated evenly, which usually points at sizing or duct design
- The repair is a large share of what a new, more efficient system would cost
If replacement is the smarter move, we will show you the numbers both ways and let you decide. See HVAC installation or ask about financing options.
Why Clark HVAC
Local Techs Who Answer the Phone
Licensed, insured, EPA certified
Licensed and insured in both Arkansas and Oklahoma, with EPA-certified technicians.
24/7 emergency service
Heat out on a cold night, a weekend, or a holiday? We answer. After-hours calls are billed at our overtime rate, and we tell you that before we roll.
Upfront pricing
You hear the price before the wrench comes out. No surprise line items when the invoice shows up.
Real local techs
Family-owned out of Spiro, OK. The person who answers is the same outfit that shows up at your door.
No high-pressure sales
If the fix is a twenty dollar part, we install the twenty dollar part. We are not working off a commission script.
Second opinions welcome
Been told you need a whole new system? We are glad to take a look and tell you what we actually find.
Service Area
Furnace Repair Across the River Valley
Based in Spiro, OK and running heating calls on both sides of the state line.
- Fort Smith, AR
- Poteau, OK
- Pocola, OK
- Spiro, OK
- Greenwood, AR
- Van Buren, AR
- Sallisaw, OK
- Alma, AR
- Barling, AR
- Lavaca, AR
- Hackett, AR
- Charleston, AR
- Muldrow, OK
- Roland, OK
- Heavener, OK
- Howe, OK
- Stigler, OK
- Cameron, OK
- Shady Point, OK
- Arkoma, OK
Related Services
Questions
Furnace Repair FAQs
Do you offer emergency furnace repair at night or on weekends?
Yes. We run true 24/7 emergency service, including nights, weekends, and holidays. Our office hours are Monday through Friday, 7:30am to 4:30pm, and calls outside those hours are billed at our overtime rate — we tell you that up front before we head your way.
How fast can you get to me?
We do same-day service whenever we have a truck free, and no-heat calls move to the front of the line in cold weather. Call us and we will tell you honestly where you land in the schedule instead of giving you a window we cannot hit.
Do you work on electric furnaces and heat pumps too?
Yes. We service gas furnaces, electric furnaces, and heat pumps, plus ductless mini-split systems. If your heat comes from a heat pump, take a look at our heat pump services page.
What furnace brands do you service?
We work on most residential and light commercial brands regardless of who installed it. You do not have to have bought the system from us for us to repair it.
Should I repair my furnace or replace it?
It depends on the age of the unit, what failed, and the condition of the heat exchanger. A single failed part on a furnace that still has years left is usually worth repairing. A cracked heat exchanger, or a long string of repairs on an old system, is when replacement starts making more sense. We will give you our honest read and the numbers both ways.
Do you offer financing on a furnace replacement?
Yes — financing is available with approved credit through Synchrony, including plans with no interest if paid in full within the promotional period. You can see the details on our financing page.
My furnace has not been serviced in years. Is that a problem?
It is worth getting looked at before hard winter sets in. Dirty burners, a plugged flue, a weak igniter, or a clogged filter are cheap to address now and expensive to ignore. Our maintenance service covers a full heating check.
What areas do you cover for furnace repair?
We are based in Spiro, OK and run heating calls throughout Fort Smith, Poteau, Pocola, Spiro, Greenwood, Van Buren, Sallisaw, Alma, Barling, Lavaca, Hackett, Charleston, Muldrow, Roland, Heavener, Howe, Stigler, Cameron, Shady Point, Arkoma, and the surrounding River Valley and Eastern Oklahoma communities.
Need Your Heat Back On?
Call and talk to a real local tech. We will tell you what is wrong with your furnace and what it takes to fix it — no pressure, no guessing.
Financing available with approved credit through Synchrony.