Durant, Bryan County. Far southeast Oklahoma, near the Texas line and Lake Texoma. Hot, humid summers push AC systems hard, so coil cleaning and refrigerant checks matter. Mix of older homes and newer lake-area construction. The jobs on this page are installs and major system work I’ve completed down this way.
Hartzell’s Heat & Air has completed 28 HVAC jobs in Durant (74701). 21 new installs, 0 geothermal projects, 3 AC service calls. Master HVAC license, NATE certified. Call 405-375-4822 or book online.
Recent Durant projects
Hartzell’s Heat & Air has completed 28 HVAC jobs in Durant (74701) over the last 24 months. 21 new installs, 0 geothermal projects, 0 rated jobs. I’m Dave Hartzell. 47 years on tools, Master HVAC license, NATE certified. Call 405-375-4822.
Durant (74701) on the Map
2026 Repair Reality (Honest Pricing)
- R-454B and R-32 refrigerants now standard on new equipment. Both are mildly flammable A2L. R-454B recovery $445, R-32 recovery $395. About 50% pricier per pound than R-410A. I stock both.
- Hard Start Kit $415 installed + BEST surge protection bundle $1,225 (control board spike + transformer + in-line fuse). One $1,225 surge fix beats one $3,195 compressor replacement after Oklahoma lightning.
- Free second opinion on any repair quote. Most competitors charge or refuse. Weekday mornings, repair customers welcome. Call 405-375-4822.
New HVAC Install in Durant
“Business furnace quit working, need it back online fast”
Commercial HVAC diagnostic and troubleshooting in Durant Oklahoma spring, heating system failure assessment
New HVAC Install in Durant
“Business HVAC system needed emergency service to keep operations running”
Commercial HVAC diagnostic and service in Durant fall, licensed technician 24-hour response, system assessment and repair recommendations
New HVAC Install in Durant
“Commercial unit needs checking to keep business running smooth”
Commercial HVAC diagnostic service Durant summer. Expert troubleshooting, system analysis, written repair recommendations included.
AC Service in Durant
“AC wasn’t running even though thermostat was set to cool”
Durant summer AC unit reset after breaker cycle, compressor rattle diagnosed, capacitor tested good, refrigerant charge verified, outdoor coil cleaned
New HVAC Install in Durant
“Business AC system down, need to find out what’s wrong”
Commercial HVAC diagnostic service Durant summer, licensed technician troubleshooting cooling system failure
New HVAC Install in Durant
“Got our AC checked out during the hot Oklahoma summer”
Air conditioning diagnostic and inspection in Durant, summer. Hartzell’s HVAC system evaluation, repair recommendations, energy efficiency assessment
New HVAC Install in Durant
“AC won’t cool down when we need it most”
Spring AC diagnostic and capacitor replacement in Durant, residential air conditioning repair
Duct & IAQ in Durant
“Commercial building lost heat in the middle of winter”
Commercial HVAC diagnostic service Durant winter, no heat troubleshooting, licensed technician inspection
Duct & IAQ in Durant
“Commercial building lost heat in middle of winter, need to get running fast”
Commercial HVAC diagnostic service Durant winter, troubleshooting heating system failure, written recommendations provided
AC Service in Durant
New HVAC Install in Durant
“Business needed emergency HVAC check to keep operations running during winter”
Commercial HVAC diagnostic service Durant winter, licensed technician identified system issues with written repair recommendations
New HVAC Install in Durant
“Office heater stopped working in the middle of winter”
Winter diagnostic service Durant OK residential heating system, condenser fan motor replacement identified
Duct & IAQ in Durant
“Got a new mini split, need to make sure it’s running right”
Mini split diagnostic and system analysis in Durant OK, fall seasonal HVAC inspection and performance check
New HVAC Install in Durant
“North side of house won’t cool, ice buildup on the lines”
Fall HVAC diagnostic Durant OK, frozen evaporator coil, R-22 refrigerant analysis, cooling system troubleshooting
New HVAC Install in Durant
“Air conditioner won’t cool down on a hot summer day”
AC diagnostic and analysis in Durant summer, identified cooling system failure, factory warranty options available
New HVAC Install in Durant
“Commercial building lost heat in the middle of winter”
Commercial HVAC diagnostic and analysis, no heat fault troubleshooting Durant winter, licensed technician 24-hour service
New HVAC Install in Durant
“Commercial unit quit cooling, business needs it running”
Commercial HVAC diagnostic and repair service Durant fall, system failure troubleshooting and restoration
New HVAC Install in Durant
“Mini split AC barely cooling, remote control acting up”
Commercial mini split low refrigerant charge and faulty remote diagnosed, Durant summer service call
Duct & IAQ in Durant
“AC drain line wasn’t hooked up, so we got it connected and checked everything”
Residential HVAC service Durant spring: reconnected AC drain line, system operation verified
New HVAC Install in Durant
“Furnace smelling burnt, wanted to make sure nothing was wrong”
Heat pump and electric heating elements inspected, Durant winter service call, no faults found
New HVAC Install in Durant
“Old heat pump finally gave up, so we installed a brand new system that’ll heat and cool”
Ameristar 5-ton 14 SEER heat pump with 20kw electric backup, R-410a, new evaporator coil installed Durant fall
AC Service in Durant
New HVAC Install in Durant
“AC condenser fan stopped working, needed new motor and capacitor”
Durant summer A/C service: replaced 1/2 hp condenser fan motor 115/230V, Turbo 2.5 67.5 MFD capacitor, R22 system evaluation
New HVAC Install in Durant
“AC wasn’t cooling right, turned out the filter was clogged and choking the system”
Durant summer AC service, high efficiency filter restriction removed, installed 20×30 2-inch MERV 8 replacement filter
New HVAC Install in Durant
“Whole duct system got grimy, needed deep clean and sanitizing inside”
Complete ductwork cleaning and biocide sanitization Durant summer, coil and blower assembly serviced, Merv 8 filters installed
New HVAC Install in Durant
“Furnace wasn’t putting out any heat”
Furnace no heat Durant winter. Cleaned internal filter, replaced 20x30x1 outdoor and 16x30x1 indoor filters. System restored.
New HVAC Install in Durant
“Furnace kept shutting down, wouldn’t stay running”
Replaced ICP heater relay, Durant winter furnace repair, restored heating operation
New HVAC Install in Durant
“Furnace wasn’t putting out any heat”
Durant winter no heat repair. Faulty relay on electric heat strip identified, ordered replacement component, scheduled return visit
Why folks in Durant call me
I run my routes out of Kingfisher, and Durant is a regular stop. Most of my Durant customers found me by referral. I keep my truck stocked with the parts that fail most often in Oklahoma weather, so when I roll up I usually have what I need to fix the system the same day.
I quote everything in writing before the work starts. No “you need this” pressure, no equipment swaps you did not ask for. Just diagnosis, fix, written invoice. Call 405-375-4822 or book online at hartzellsheatair.com.
Common questions from Durant (74701)
How much does an AC repair cost in Durant?
A residential service call is $210 flat: $99 dispatch plus $111 diagnostic. The $111 diagnostic is not credited toward the repair. If I leave a written repair estimate and you accept it within 10 days, I give the $99 dispatch fee back. Most Durant repairs land between $200 and $850 all-in. Refrigerant work, blower motor failures, and capacitor swaps are the most common categories I see in this ZIP.
Do you offer same-day service in Durant?
Most days yes. If you call before noon and the job is straightforward (no-cool, no-heat, leak), I can usually be at your house in Durant that same afternoon. Heavy install days or extreme-weather backlog can push it to next-day, but I always tell you up front when you call.
What does a new HVAC install in Durant run?
A complete 3-ton air-source heat pump installed (heat pump + air handler + thermostat + permits) runs about $10,000 to $14,000 in Durant, depending on equipment tier and ductwork condition. OG&E rebates up to $3,000 stack on top. Geothermal is a different conversation, that is $25,000 to $36,000 range before rebates. I write a free estimate either way.
Do you service all brands in Durant?
Yes. Master HVAC license, NATE certified, 47 years on tools. I install Trane, Mitsubishi, Amana, ClimateMaster (geo), RunTru. I service whatever brand is sitting on your slab. If it has a refrigerant cycle and ductwork, I can work on it.
Recent services for Durant (74701) customers: AC diagnosis and repair, furnace not heating, capacitor replacement, blower motor swap, refrigerant top-off, thermostat upgrade, ductwork sealing, full system replacement, geothermal installation, indoor air quality (UV + media filtration), water heater install and replacement, dehumidifier installation, electrical panel coordination for heat pump upgrades.
Nearby Service Areas
Need HVAC Help in Durant?
Call 405-375-4822 or book online. Same-day appointments available across Central Oklahoma.