Top-rated independent heating and cooling across north Georgia and the southern Appalachians
Repair or Replace an Air Conditioner
Your AC quit, a technician gave you a diagnosis, and now you are trying to work out whether to fix it or start over. We do air conditioning repair and replacement across Alabama, Georgia, Kentucky, North Carolina, South Carolina and Tennessee, and we will tell you plainly which way we would go. Here is how we actually think it through in your home.
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STM Heating & Air service team · field-reviewed before publishing
The Four Things That Actually Decide It
Age, the type of fault, whether parts still exist, and whether the two halves of the system still match. Age matters because a cooling system that has run a decade and a half of southern summers has worn compressor bearings and tired contactors, not just the one part that failed. Fault type matters more than most people expect. A failed capacitor or contactor is a small, contained repair on almost any age of unit. A compressor or a leaking evaporator coil is a different conversation. Parts availability decides whether we can even do the repair, and matching decides whether the repair will perform once it is done. We weigh all four together. No single one of them settles it..
Fault Type: Small Parts Versus Big Iron
Electrical components fail regularly and cost little to swap, so we replace them and move on. Capacitors, contactors, fan motors, control boards and thermostats all fall in that group. The heavier items are the compressor, the outdoor coil and the indoor coil. Those carry refrigerant, take longer to change, and on an older unit they often signal that the rest of the system is close behind. When we find a refrigerant leak, we look for where and how bad. A leak at a fitting we can address. A coil weeping in twenty places is telling you the metal is done. Repeat leaks on the same unit are a strong replacement signal.
Parts, Refrigerant and Matching
Older air conditioners use refrigerant that is being phased down, and the units themselves are past the window when manufacturers stock parts. We can sometimes find a compressor for a fifteen year old system, sometimes we cannot, and sometimes what we find is a universal substitute that never runs quite the same. Matching is the other trap. If the outdoor unit gets replaced and the indoor coil and blower stay, the pair has to be compatible or you get poor cooling, high head pressure and short equipment life. We would rather tell you that up front than sell you half a system that disappoints you every August.
How We Think About It On The Visit
We diagnose first, then talk. That means finding the actual fault instead of guessing from symptoms, checking the age off the data plate, looking at the coil and the electrical components, and reading the refrigerant charge. Then we lay out your real options, usually two or three, with what each one buys you and what risk stays behind. If a repair gets you through the season and you would rather spend the money later, we will say so. If we think the repair is throwing good money at a unit that will fail again, we will say that too. You make the call. We are not going to pressure you at your kitchen table.
Honest Cases Where Replacement Wins
A compressor failure on a system past its mid teens. A leaking evaporator coil on a unit using phased down refrigerant. Two or three separate repairs in the last couple of summers. A system that was undersized or oversized when it went in and has never kept the house comfortable. Ductwork or an air handler in a red clay crawlspace that has rusted through and is dumping cooled air under the floor. In those cases the repair is real work with real cost and the system still has the same problems the day after. Replacement is the honest answer, and we would rather you hear it from us than find out next July.
Repair or Replace an Air Conditioner — fast answers
How old is too old for an AC?
There is no hard cutoff. Past the mid teens we start weighing repairs harder, because a big part failure on an older unit usually comes with worn components elsewhere. A small electrical repair can still make sense on an old system.
Can I just replace the outdoor unit and keep the indoor coil?
Sometimes, but only if the two are compatible. Mismatched pairs cool poorly and wear out early. We check the indoor coil and blower before quoting an outdoor only change, and we tell you if it will not work.
Is a refrigerant leak worth repairing?
It depends on where the leak is. A fitting or line joint is usually fixable. A coil leaking in several places is not, and topping off refrigerant year after year just pays for the same leak twice.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form and describe what you hear, smell or feel. Warm air, short cycling, a breaker that keeps tripping. That gives us a head start on the likely cause.
- Step 2
We diagnose on site
A technician checks the thermostat, airflow, electrical connections, refrigerant performance and the outdoor unit. We work the crawlspace and the attic too, because ductwork and drainage cause more trouble than people expect.
- Step 3
You decide, then we fix it
We explain what failed, what it takes to repair it, and what we would watch next season. No work starts until you say go. Most repairs finish the same visit when parts are on the truck.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Mixed heating is normal to usHeat pumps, propane furnaces and dual-fuel setups all behave differently in cold weather. We know how a heat pump should sound in the thirties and when the backup heat is doing too much of the work.
- We go under the houseRed clay crawlspaces hide crushed ducts, sweating lines and standing water. Comfort problems often start down there, not at the unit, so we look before we start replacing parts you may not need.
- Plain explanationsYou get told what broke and why, in words that make sense. If a repair is a short-term patch on an aging system, we say that out loud so you can plan instead of guessing.
- One crew, six statesWe serve homeowners across Alabama, Georgia, Kentucky, North Carolina, South Carolina and Tennessee. Same approach in every one: show up, diagnose properly, repair what needs repairing, leave the space clean.
- All major brands, gas & electricOne independent crew for Carrier, Trane, Lennox, Goodman, Rheem and more.
- Straight answersNot worth fixing? We say that out loud, and often it saves you the visit fee.
About this guide
If the safe checks didn't fix it, the fault is real
Describe what you found and we'll take it from there. Booking takes about a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
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