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GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateTrusted AC Maintenance for Marietta Homeowners
AC Maintenance - Marietta isn’t a luxury. It’s the difference between a system that makes it through a Georgia August without blinking and one that quits on the hottest afternoon of the year. We’re Brandt HVAC Co Marietta, and we’ve been keeping air conditioners running in Cobb County homes since 2003. Our maintenance visits run $80 – $200 depending on your system’s age and what it needs, and every visit starts with a written price before we touch a single component. You’ll know exactly who’s coming to your door before they arrive, because we send you the technician’s name and photo in advance. If your AC sounds off, short-cycles, or just hasn’t been looked at in over a year, call us at (478) 662-5175. A live person answers, day or night.
Air Conditioner Maintenance
Air Conditioner Maintenance is the scheduled service that keeps your cooling system clean, calibrated, and running at the efficiency it had when it was new. In Marietta’s humidity, coils collect grime fast, and that grime forces your compressor to work harder every single day. We recommend a maintenance visit once a year, ideally in March or April before the first real heat wave hits. Our technicians inspect, clean, and test every major component, then hand you a written summary of what they found and what it means. Most standard maintenance visits in Marietta run $80 – $200, and you’ll see that price in writing before we begin.
System Inspection and Cleaning
We pull the access panels, inspect the wiring and contacts, clean the condenser and evaporator coils, and check the refrigerant level against the manufacturer’s spec. A coil that’s only 30% dirty can raise your cooling bill by more than you’d think, and we’d rather show you the before-and-after than just tell you it’s clean.
Written Findings Report
After the visit, you get a plain-language report showing exactly what was checked, what condition it’s in, and whether anything needs attention now or can wait. No vague “your system looks fine” line. You’ll know what we found because we write it down.
Styles & brands we work with







HVAC Maintenance
HVAC Maintenance covers both halves of your comfort system, the heating and the cooling, so you’re not caught off guard when the seasons shift in Marietta. Most homeowners only think about their HVAC twice a year: when it gets hot and when it gets cold. That reactive pattern is exactly what leads to breakdowns. We offer combined maintenance that checks your air conditioner in spring and your furnace in fall, keeping the whole system balanced. A standard HVAC maintenance visit ranges from $80 – $200 depending on system type and what’s included, and the written price comes before the work, every time.
Seasonal Readiness Checks
Before summer, we verify the cooling side: refrigerant, coils, capacitor, contactor, and drain line. Before winter, we check the heating side: burners, heat exchanger, ignition, and safety switches. Each season gets its own focused checklist so nothing is left to guesswork.
Efficiency and Airflow Testing
We measure temperature drop across the coil and static pressure in the ductwork. Numbers don’t lie. If your system is moving less air than it should, we’ll find it early instead of after a $1,200 motor burns out in July.
AC Tune Up
AC Tune Up service is the precise, measurable adjustment of your cooling system to get it running as close to factory spec as possible. Think of it like a wheel alignment for your car. You can drive without one for a while, but you’re paying for it in wear and fuel. We tune the thermostat calibration, tighten electrical connections, check the capacitor’s microfarad rating, and lubricate moving parts. In Marietta, a tune-up typically runs $80 – $200, and that’s a small price against a compressor failure that can cost as much as a new system. The price is on paper before we start, and there’s no pressure to add anything you don’t need.
Electrical and Capacitor Checks
A weak capacitor is the most common cause of an AC that hums but won’t start, or one that draws too many amps and trips a breaker. We test every capacitor, not just look at them. If one’s fading, we’ll show you the reading and tell you what it means.
Drain Line and Condensate Care
Marietta’s humidity means your AC pulls gallons of water out of the air every day. If the drain line clogs, that water backs up and can damage your ceiling, walls, or the unit itself. We flush the line and check for algae growth, and we’ll tell you if a simple safety float switch would protect your home.
HVAC Maintenance Service
HVAC Maintenance Service is the full-service visit from a vetted, named technician who shows up on time, in uniform, with a photo ID badge, and does the work exactly as quoted. We don’t send random subcontractors, and we don’t ask you to trust a stranger at the door. Every Brandt HVAC Co Marietta technician is background-checked and identity-verified under the Threshold Verified standard. You get their name and photo before the visit, and when they knock, you’ll already know who’s there. Maintenance service in Marietta is priced at $80 – $200 for standard systems, always written before work begins, and every visit is covered by our 365-Day Done Right Promise.
Technician Verification at Your Door
Here’s how the Threshold Verified standard works: we check every technician’s background, verify their identity, and send you their photo before arrival. At the door, they show a matching ID badge. If anyone shows up who you weren’t told to expect, that visit is on us and we make it right.
Guaranteed Work, No Exceptions
If something we touched during maintenance fails within 365 days, we return and make it right at no charge. No arguments, no fine print. That guarantee is written on every invoice, and it’s part of the way we’ve done business since 2003.
HVAC Tune Up
HVAC Tune Up is the adjustment and calibration service applied to both your heating and cooling equipment so each half of the system runs clean, safe, and efficient in its season. In Marietta, where summers are brutal and winter cold snaps come fast, a tuned system costs less to run and quits far less often. We check refrigerant charge, airflow, thermostat accuracy, burner performance, and safety controls. A full HVAC tune up runs $80 – $200 for most Marietta homes, and you’ll get the exact figure in writing before we start. No surprises, no add-ons you didn’t approve.
Thermostat and Control Calibration
If your thermostat reads two degrees off, your system may be running hundreds of extra hours a year without you knowing it. We verify sensor accuracy and calibrate against a reference thermometer. We’ll also confirm your setback schedule matches how you actually live, not how the installer guessed.
Safety Control Verification
On the heating side, safety switches, limit controls, and the pressure switch are checked every time. A furnace that short-cycles or a safety that’s been bypassed isn’t just an efficiency problem. It’s a hazard. We treat it like one, and we document the results.
Brands We Service
We work on most major residential equipment in Marietta, including Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Trane systems are common across Marietta’s older subdivisions, and we know their compressors and coils well. Lennox units, especially the higher-efficiency models, require specific diagnostic procedures we perform regularly.
Goodman and Rheem are the brands we see most often in newer Marietta construction and townhome communities. We keep common OEM parts for both on our trucks, so many repairs are completed in a single visit. Whether you have one of those or any other make, we can maintain it and keep it running right.
See the difference
Before
After
Before
AfterSigns You Need a Pro Right Now
- Your AC runs but doesn’t cool. This usually points to a refrigerant leak or a failed compressor. Refrigerant doesn’t “get used up.” If it’s low, there’s a leak, and adding more without finding the leak is money down the drain.
- You hear grinding, squealing, or banging. Bearings, belts, and compressor internals make specific noises when they’re failing. A squeal may be a cheap belt today, but a banging compressor is a replacement bill if you wait.
- Your energy bill spiked for no reason. Marietta homeowners often see a 20-40% jump in cooling costs when a system loses efficiency. That’s not the weather. That’s a system working harder than it should, and it’s usually fixable with maintenance or a minor repair.
- The system short-cycles, clicking on and off. Short cycling wears out compressors and motors fast. Common causes include a dirty coil, wrong refrigerant charge, or a failing capacitor. Each one gets worse the longer it runs.
- Water is pooling around the indoor unit. A clogged condensate drain or a frozen coil means water is going somewhere it shouldn’t. In Marietta’s humid air, this can cause ceiling damage, mold, and ruined flooring if it’s not cleared quickly.
Our Process, Step by Step
- 1
You call, a live person answers. Day, night, weekend, holiday. You’ll speak with someone who can schedule your visit and answer basic questions right then. No phone trees, no voicemail, no callback queue.
- 2
You get a written price before anyone touches your equipment. We diagnose, we quote, you approve. If you don’t approve, there’s no obligation and no pressure. The price you see is the price you pay.
- 3
Your technician is introduced by name and photo. Before the visit, you receive the technician’s details. When they arrive, they show a matching photo ID badge. That’s the Threshold Verified standard, and it’s non-negotiable.
- 4
We do the work and show you the proof. We test, clean, calibrate, and document. You get a written report of what was found, what was done, and what should be watched. We don’t hide findings. We hand them to you.
- 5
You’re covered by the 365-Day Done Right Promise. If something we serviced fails within a year, we return at no charge and make it right. That’s what “done right” means to us, in writing, on every job.
How Much Does AC Maintenance Cost in Marietta?
A standard AC maintenance visit in Marietta runs $80 – $200 for most residential systems. The specific price depends on a few things: the size and type of your equipment, whether it’s a single visit or part of a combined heating-and-cooling plan, and what the technician finds during the inspection. A straightforward tune-up on a well-kept 3-ton system will land on the lower end of that range. A larger system or one that’s gone several years without service and needs significant coil cleaning will run higher.
What affects the price: system size (a 5-ton unit takes longer to service than a 2-ton), accessibility of the equipment (attic units in Marietta’s older homes can be tight), and the condition of the coils and filters. The most important habit for avoiding overpaying is getting maintenance before small problems become big ones. A $90 coil cleaning in April prevents a $650 repair in August. Every Brandt HVAC Co Marietta estimate is free, written, and presented before work starts. You’ll know the number and you’ll have time to think about it. Call (478) 662-5175 for an exact quote on your system.
Our Service Area Near Marietta
We maintain and repair AC systems throughout Marietta and the surrounding communities, including Mableton, Acworth, Smyrna, Kennesaw, Vinings, Powder Springs, Austell, Fair Oaks, Lithia Springs, Scottdale, and Woodstock. Most Marietta-area calls get a same-day or next-day visit, depending on the season and the time of day you call. If you’re in one of these areas and you want to know who’s coming to your door before they arrive, we’re the company for you. For more on what we do in neighboring cities, see our AC Maintenance in Mableton and AC Maintenance in Acworth pages.
Serving Marietta, GA - Our Local Coverage Area
We’re based in the Marietta area and know this community well, and we also offer our AC Maintenance in Smyrna. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions About AC Maintenance in Marietta
AC maintenance is a scheduled service visit where a technician cleans, inspects, tests, and calibrates your air conditioning system to keep it running reliably and efficiently. It includes coil cleaning, electrical checks, refrigerant level verification, drain line clearing, and thermostat calibration. For Marietta homeowners, it’s the single most effective way to avoid mid-summer breakdowns and keep energy bills down. We also provide Kennesaw AC Maintenance for nearby residents.
A standard AC maintenance visit takes 60 to 90 minutes for most residential systems in Marietta. Larger systems, attic installations, or units that haven’t been serviced in years may take up to two hours. We’ll give you a time window when you schedule, and we’ll call if the technician’s arrival time changes.
Most AC maintenance visits in Marietta run $80 – $200. The exact price depends on your system’s size, type, and condition, and you’ll always get a written quote before work begins. There’s no obligation and no pressure to add anything you don’t need. Call (478) 662-5175 for a free estimate on your system.
Yes. We service Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard, along with other residential brands. Our technicians carry common OEM parts for the brands we see most in Marietta, which means many repairs are completed the same day. If you have an unusual or older unit, we’ll still diagnose it and give you a straight answer.
Yes. Our phones are answered by a live person 24 hours a day, 7 days a week, including nights, weekends, and holidays. If your AC fails during a Marietta heat wave, call (478) 662-5175 and you’ll speak with a person who can schedule a same-day visit when available. We don’t route emergency calls through an answering service that takes messages.
Every maintenance visit and repair is covered by our 365-Day Done Right Promise. If something we serviced fails within 365 days, we return and make it right at no charge. The guarantee is written on your invoice, and it’s not pro-rated or limited by fine print. That’s how we’ve operated since 2003.
Clear a path to the indoor unit and the outdoor condenser, and make sure the area around both is free of boxes, leaves, or stored items. If your system is in an attic, make sure the access is open and safe to reach. Beyond that, you don’t need to do anything. We bring our own tools, and we’ll walk you through everything we find.
Schedule Your AC Maintenance Service in Marietta Today
If your AC hasn’t been serviced this year, don’t wait for the heat to do it for you. Call Brandt HVAC Co Marietta at (478) 662-5175 and schedule your maintenance visit today. You’ll get a written price before any work starts, a named technician you’ll recognize at the door, and the 365-Day Done Right Promise on every job. The estimate is free, and a real person answers the phone 24/7.
Written by Devin Marlowe, Owner at Brandt HVAC Co Marietta, serving Marietta since 2003.