Seasonal 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.
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AfterFast, Reliable AC Maintenance Across Marietta
AC maintenance in Marietta typically costs $80 – $200 for a full tune-up and should be scheduled twice yearly, before the summer humidity hits and before winter cold snaps strain your heat pump. Most appointments take 60 – 90 minutes, and we dispatch from our Atlanta office so crews reach Marietta neighborhoods same-day when you call early.
We’ve been working on Cobb County heat pumps long enough to know the local patterns. The ranch homes off Shallowford Falls, the split-levels near Murdock Road, the colonials in East Cobb near Walton and Lassiter High School zones – these houses share a common history. Cobb EMC pushed all-electric heat pumps hard during the 1970s through 1990s build-out, and now that entire generation of equipment is aging out simultaneously. Our AC Maintenance team knows what to look for in these systems because we’ve worked on hundreds of them right here in Marietta. Call (984) 538-9003 to schedule – estimates are free, and a live person answers the phone 24 hours a day.
Why Brandt HVAC Is Marietta’s Preferred AC Maintenance Company
Brandt HVAC, established in 2003 as part of the Threshold Group family, has built its reputation in Marietta on one thing above all: certainty about who walks through your door. Before any technician arrives, you receive their name, photo, and verification badge through our Threshold Verified standard. They show photo ID at the door. If anyone shows up who you weren’t told to expect, that visit is on us and we make it right.
Our Marietta customers tell us this matters especially here. Many of our calls come from homeowners who are home alone during the day, parents with young children back from Walton or Lassiter schools, or older residents in the established East Cobb subdivisions. They want to know exactly who is coming into their home, and we tell them plainly.
Every job begins with a written price before any work starts. Every repair includes a written guarantee. If a repair fails within the guarantee period, we return free of charge under our 365-Day Done Right Promise. Our technicians are background-checked, uniformed, and sent to you by name – not dispatched as anonymous labor.
Response time to Marietta runs same-day for calls placed before early afternoon, with scheduling coordinated from our Atlanta office. We stock common parts for Goodman, Rheem, York, and Daikin systems locally, which means most maintenance visits don’t require a return trip.
HVAC Tune Up in Marietta
HVAC Tune Up in Marietta means something specific: we’re working on heat pumps, almost exclusively, with ductwork routed through unconditioned attics where summer temperatures exceed 140°F. The job involves checking refrigerant charge, testing capacitors and contactors, measuring static pressure across the coil, inspecting flex duct for crimps or disconnections, and calibrating the thermostat. Most Marietta homeowners need this twice yearly – once before the humid season when dewpoints climb into the low 70s°F, and once before winter when ice storms can knock out power and leave heat-pump-only homes vulnerable. A typical HVAC Tune Up in Marietta runs $80 – $200.
What We Check in Attic Ductwork
On nearly every older East Cobb and Shallowford Falls home, we find flex duct that has degraded after 30 – 40 years in that 140°F attic. The vapor barrier cracks. Sections disconnect at collars. Crimps form where duct was forced around framing. We measure airflow at each register and use a manometer to read static pressure – high readings almost always trace back to duct damage, not equipment failure.
Refrigerant Charge and Latent Load
Marietta’s humidity is brutal. A heat pump even slightly low on refrigerant can’t carry the latent load needed to dehumidify your home. We weigh the charge against the manufacturer’s specification and check superheat and subcooling. The thermostat may read 72°F while your skin tells you something different. The refrigerant charge is usually why.
Air Conditioner Maintenance in Marietta
Air Conditioner Maintenance in Marietta focuses on the outdoor condenser and its relationship to the indoor air handler – a relationship that was often mismatched during the original installation boom of the 1980s and 1990s. We clean the condenser coils, check the fan motor amp draw, test the compressor, and verify that the outdoor unit’s tonnage rating actually matches the indoor coil and air handler. This matters because mismatched systems short-cycle, waste energy, and fail to dehumidify properly. Most Marietta homeowners schedule Air Conditioner Maintenance in spring, before the summer workload peaks. Expect to pay $80 – $200 for a complete maintenance visit.
Tonnage Matching Verification
We cross-check nameplate data on every call. It’s common in East Cobb subdivisions built between 1983 and 1998 to find a 3-ton air handler paired with a 2.5-ton condenser, or zone dampers that were bypassed decades ago. These aren’t failures that happened over time. They were baked in from original installation. We log the correct pairing in our system so the next technician knows what should be there.
Capacitor and Contactor Wear
Georgia heat cooks electrical components. We test run capacitors for microfarad drift and check contactor points for pitting. These are $20 parts that cause $300 service calls when they fail. Finding them early is the whole point of maintenance.
Trusted Brands We Service in Marietta
We service all major residential HVAC brands including Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Marietta customers, we keep common maintenance parts stocked locally for Goodman, Rheem, York, and Daikin systems – capacitors, contactors, filter driers, and flex duct repair kits. That local inventory means when we find a failed capacitor on a maintenance call in Kennesaw or a disconnected duct run in Powder Springs, we fix it then rather than ordering parts and rescheduling. Our technicians carry the refrigerants these heat pumps need, including the newer R-410A and the phased-out R-22 that still runs in many 1990s Marietta systems. If your system uses R-22, we’ll tell you plainly what that means for future repairs and let you plan accordingly.
Common AC Maintenance Problems We See in Marietta Homes
- Crimped or disconnected flex duct in unconditioned attics. The original flex duct in Shallowford Falls and East Cobb ranch homes has spent 30 – 40 years in 140°F attics. Vapor barriers degrade. Sections pull loose at collars. Airflow collapses and static pressure spikes, forcing the heat pump to work harder for less cooling.
- Mismatched tonnage from the building boom era. Our maintenance visits regularly uncover 3-ton air handlers paired with 2.5-ton condensers in homes built between 1983 and 1998. These mismatches were wired and commissioned poorly during rapid construction and have been short-cycling ever since, wasting energy and failing to dehumidify.
- Low refrigerant charge failing latent load. When Marietta dewpoints hit the low 70s°F, a heat pump even slightly low on refrigerant cannot remove enough moisture. The thermostat reads 72°F but the house feels clammy. This is the most common humidity complaint we diagnose in Cobb County.
- Failed capacitors and pitted contactors from thermal stress. Attic-mounted air handlers and outdoor condensers both suffer in Georgia heat. Electrical components degrade faster than in cooler climates. We test these on every maintenance visit because preventive replacement is cheap; emergency failure is not.
Pricing for AC Maintenance in Marietta, GA
We believe you should know what AC maintenance costs before you call. Here’s what we charge in the Marietta market:
| Service | Price Range |
|---|---|
| AC Maintenance / Tune-Up | $80 – $200 |
| AC Repair | $150 – $650 |
| AC Installation | $3,500 – $7,500 |
What moves a tune-up toward the higher end? Multiple zones to check, significant duct repair in the attic, or systems that haven’t been maintained in several years and need more time to bring back to spec. We give you a written price before any work starts – always, on every job, with no exceptions. Estimates are free. Call (984) 538-9003 and a live person will answer, 24 hours a day.
We Also Serve Cities Near Marietta
Our crews work throughout Cobb County and beyond, including Marietta, Smyrna, Kennesaw, Powder Springs, and Atlanta. Scheduling is coordinated from our Atlanta office, with local technicians dispatched to your area. Whether you’re in a 1970s ranch off Murdock Road or a newer build near the Battery, we bring the same Threshold Verified standard: name, photo, and badge verification before every visit.
Serving Marietta, GA - Our Local Coverage Area
We’re based in the Marietta area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About AC Maintenance in Marietta
Your heat pump is likely low on refrigerant or mismatched with your air handler, and it can’t carry Marietta’s heavy latent load when dewpoints hit the low 70s°F. We see this constantly in East Cobb and Shallowford Falls homes with original Cobb EMC-era heat pumps. The thermostat measures air temperature, not humidity. A proper maintenance visit checks refrigerant charge, verifies tonnage matching, and measures actual dehumidification performance. Call (984) 538-9003 for an exact diagnosis – estimates are free.
The only way to know for certain is to cross-check the nameplate tonnage ratings on your outdoor condenser against your indoor air handler and evaporator coil. On a maintenance call in the Lassiter High School attendance zone of East Cobb, our tech pulled the service history and found a 3-ton air handler paired with a 2.5-ton condenser from the original 1996 commissioning – a mismatch that had been quietly short-cycling the system for years. After correcting the refrigerant charge, testing the capacitor, and sealing a disconnected flex duct run in the 140°F attic, static pressure dropped and the homeowner’s upstairs humidity complaint disappeared. We finished with thermostat calibration and logged the correct tonnage pairing for the next visit. We do this verification on every maintenance call. Call (984) 538-9003 to schedule.
We check refrigerant charge and weigh it against manufacturer specs, test all electrical components, measure static pressure and airflow at each register, inspect flex duct for crimps or disconnections in the attic, clean the condenser coils, and calibrate the thermostat. For Marietta’s attic-mounted systems, duct integrity is as important as the equipment itself. The visit takes 60 – 90 minutes and costs $80 – $200. You’ll get a written report of what we found and what it means. Call (984) 538-9003 to book.
Schedule maintenance before the next winter season to verify your heat pump’s defrost cycle, auxiliary heat strips, and overall refrigerant charge. Heat pumps without gas backup rely entirely on the refrigeration cycle and electric strips, and ice storms can overload systems that are already marginal. We can’t prevent power outages, but we can make sure your system performs at its maximum capability when power returns. A tune-up runs $80 – $200 and includes written documentation of what we find. Call (984) 538-9003.
Yes, if the duct is 30 – 40 years old and showing degraded vapor barrier, disconnections, or significant crimping. In Marietta’s unconditioned attics, that flex duct has spent decades above 140°F. It collapses airflow, drives up static pressure, and forces your heat pump to work harder for worse results. We see this on almost every older East Cobb call. Replacement isn’t cheap, but it’s far less expensive than premature compressor failure caused by restricted airflow. We’ll show you the pressure readings and let you decide. Call (984) 538-9003 for a free assessment.
Written by Devin Marlowe, Owner at Brandt HVAC, serving Marietta and surrounding communities.