Rated 5.0 on Google

Real reviews from homeowners and businesses across Fort Smith, Poteau, Spiro, and the River Valley — posted straight to Google, not written by us.

Fort Smith · Poteau · Pocola · Spiro

Heat Pump Repair & Installation in Fort Smith and the River Valley

Heat pump blowing cold in heating mode, iced over, or running nonstop? Clark HVAC repairs, maintains, and installs heat pumps for homes and light commercial buildings across Fort Smith, Poteau, Pocola, Spiro, and Eastern Oklahoma. Honest diagnostics, upfront pricing, and no pressure to replace what can be fixed.

Call 918-839-3734 Request Service
  • 24/7 Emergency Service
  • Same-Day When Possible
  • Licensed in OK & AR
  • EPA Certified
  • Upfront Pricing
  • All Major Brands
Newly installed central AC unit by Clark HVAC

Sound Familiar?

Common Heat Pump Problems We Fix

Heat pumps run year-round, so they rack up more hours than a furnace or a straight AC. Most calls we run in the River Valley come down to one of these.

Blowing cool air in heat mode

Often a reversing valve, a refrigerant issue, or a defrost control problem. Sometimes it’s just the system in a normal defrost cycle — we’ll tell you which.

Outdoor unit iced over

Light frost is normal in winter. A solid block of ice is not — usually a failed defrost board, sensor, or low refrigerant.

Runs nonstop, never satisfies

Undersized system, low charge, dirty coils, or a failing compressor. We measure instead of guessing.

Won’t switch between heating and cooling

Stuck reversing valve or a control/thermostat wiring fault.

Strips or aux heat running all the time

Backup electric heat is expensive. If it runs constantly, the heat pump side has a problem.

High electric bills

Dirty coils, a weak capacitor, low refrigerant, or a system at the end of its life all show up on the bill first.

Tripping breakers or won’t start

Compressor, capacitor, contactor, or a wiring fault. Stop resetting it and have it checked.

Noisy startup or shutdown

Some whoosh during defrost is normal. Grinding, rattling, or buzzing is not.

Heat pumps and Oklahoma/Arkansas winters

Modern heat pumps handle our climate well, but on the coldest nights the backup heat strips do more of the work. We set up dual-fuel and backup heat correctly so you stay warm without an electric bill surprise.

What to Expect

How a Heat Pump Call Works

No mystery, no runaround. Here is exactly what happens from the time you call.

  1. You call, we schedule

    A real person at Clark HVAC answers — not a call center. Same-day when the schedule allows, 24/7 for emergencies.

  2. We test the whole system

    Refrigerant pressures, reversing valve, defrost cycle, electrical, airflow, and the thermostat — heating and cooling modes both.

  3. You get the price first

    We show you what we found and what it costs to fix before any work starts. If replacement makes more sense, we say so and show the numbers both ways.

  4. We fix it and prove it

    Repair goes in, then we run the system through a full cycle and confirm it’s heating and cooling correctly before we leave.

Repair · Replace · Install

Heat Pump Services We Offer

From a single failed capacitor to a full system changeout, for homes, shops, rentals, churches, and small businesses.

Repair & maintenance

  • Diagnostics on all major brands, whoever installed it
  • Reversing valves, defrost boards, capacitors, contactors, compressors
  • Refrigerant leak search and repair
  • Coil cleaning and airflow correction
  • Spring and fall tune-ups to keep it efficient
  • Thermostat and control wiring fixes

Installation & replacement

  • Properly sized systems based on the home, not a guess
  • High-efficiency York heat pumps plus other major brands
  • Dual-fuel (heat pump + gas furnace) setups
  • Ductless mini-split heat pumps for shops, garages, and add-ons
  • Old unit haul-away and clean startup
  • 10-year parts / 1-year labor warranty on installs; financing available with approved credit through Synchrony

Recent Clark HVAC work

Clark HVAC technician diagnosing an outdoor AC unit with gauges
Diagnosing an outdoor unit
Air handler service by Clark HVAC
Air handler service
TCL ductless mini-split installed by Clark HVAC on a black barndominium
Ductless heat pump on a barndominium

Why Clark HVAC

Local Techs Who Answer the Phone

Licensed, insured, EPA certified

Licensed and insured in both Oklahoma and Arkansas, with EPA-certified technicians on every call.

24/7 emergency service

AC out on a 100° afternoon or no heat on a January night — 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.

Local crews, not a call center

Family-owned and based in Spiro, OK, with crews running Fort Smith, Poteau, and the whole River Valley every day. When you call, you reach Clark HVAC — not a dispatcher two states away.

No high-pressure sales

If the fix is a capacitor, we install a capacitor. We are not working off a commission script, and we will tell you when a repair is not worth it.

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

Heat Pump Service Across the River Valley

Headquartered in Spiro, OK and running calls on both sides of the state line — Fort Smith, Poteau, Pocola, Spiro, and the surrounding River Valley and Eastern Oklahoma towns.

Related Services

Questions

Heat Pump FAQs

Is it normal for my heat pump to blow cool air sometimes in winter?

Briefly, yes. During a defrost cycle the system reverses for a few minutes and the indoor air can feel cool. If it blows cool air for long stretches, or the house never reaches the set temperature, that’s a problem worth a call.

Why is my outdoor unit covered in ice?

Light frost is normal. A thick shell of ice means the defrost cycle isn’t working — usually a defrost board, sensor, or low refrigerant. Don’t chip at it; call us.

How long does a heat pump last?

Most last 10 to 15 years with regular maintenance. Systems that are never serviced, or that run aux heat constantly, tend to land on the short end of that range.

Will a heat pump keep up in an Oklahoma or Arkansas winter?

Yes. Modern units heat efficiently well below freezing, and backup heat strips or a dual-fuel furnace cover the coldest nights. We size and set up the backup correctly so you stay warm without a shocking electric bill.

Can I replace my old AC and furnace with a heat pump?

Usually, yes. We’ll look at your ductwork, electrical, and how you heat now, then show you the options — straight heat pump, dual-fuel, or a like-for-like replacement — with honest numbers on each. See our HVAC installation page.

Do you offer financing on a new heat pump?

Yes — financing is available with approved credit through Synchrony, including plans with no interest if paid in full within the promotional period. Details on our financing page.

Heat Pump Acting Up?

Call and talk to a real local tech. We’ll tell you what’s wrong, what it costs to fix, and whether it’s worth fixing — no pressure, no guessing.

Call 918-839-3734 Request Service

Financing available with approved credit through Synchrony.

Clark HVAC · 21196 Jake Smith Rd, Spiro, OK 74959 · 918-839-3734