AC repair
Furnace & heating
Heat pumps
Ductless mini splits
Carrier
Trane
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 estimateThe Brandt HVAC Co Marietta Guarantee
When we leave your home, you should feel confident about the work that was done. That’s not a slogan. It’s the reason Devin Marlowe runs Brandt HVAC Co Marietta the way he does. Our guarantee means this: if a repair fails within the guarantee period we put in writing on your invoice, we return and fix it at no charge. No argument. No second invoice. No fine print about which days count. We tell you exactly what’s covered before you pay a cent, and we stand behind it for as long as the agreement says. In Marietta, where a July afternoon can push an aging AC past its limit, that kind of accountability matters. You’re not buying a receipt. You’re buying certainty, and we put it in writing.
What’s Covered
- Workmanship on every repair. If the repair we made fails within the written guarantee period, we come back and make it right at no cost to you.
- Parts we supply and install. We handle parts sourcing for all major residential brands, including Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. If a part we installed is defective, it’s on us to correct it.
- Cleanup and respect for your home. We leave the work area as clean as we found it. No scrap wire, no packaging, no surprise mess behind the unit.
- On-time arrival with advance notice. We dispatch background-checked, identity-verified technicians, and you’ll know who’s coming before they knock. Name, photo, and badge are the standard.
- Honest pricing before any work starts. Every job gets a written price first. You approve it before a tool comes off the truck. No open-ended labor charges, no surprises at the end.
- A live person on the phone, always. If something goes wrong at 11 p.m. on a Sunday, you call and a real human answers. No phone tree, no voicemail that promises a callback.
Styles & brands we work with







Our Satisfaction Promise
Here’s the process if you’re not satisfied. Call us. A live person answers, 24 hours a day, 7 days a week. Tell us what’s wrong. We schedule a return visit at no charge under our 365-Day Done Right Promise. That promise is simple: if it’s not done right, we make it right. The technician who comes back will review the original repair, diagnose what failed, and correct it. You don’t pay for the second visit. You don’t pay for the replacement part. You don’t sit on hold waiting to reach a call center in another state. The same standard applies to every repair we make, whether it’s an AC compressor diagnosis, a furnace ignition issue, or a routine maintenance call. We’d rather fix a problem than argue about it. That’s the whole promise, in one sentence.
Licensed & Insured Backing
A guarantee is only worth the company behind it. Brandt HVAC Co Marietta is licensed and insured, which means you’re protected if something goes wrong on the job. Licensing means our work meets state standards, and our technicians train to those standards before they ever set foot in your Marietta home. Insurance protects you from liability if an accident happens on your property. Those aren’t just words on a website. They’re the grounding under every promise we make, and they mean the difference between a handshake and actual accountability. We also carry the Threshold Verified standard: every technician is background-checked and identity-verified before we send them to your door. If someone arrives who you weren’t told to expect, that visit is on us.
What Our 365-Day Done Right Promise Actually Covers
Let’s be specific, because vague guarantees are the easiest kind to write and the hardest to collect on. Our 365-Day Done Right Promise covers the workmanship and parts on every repair we complete. The guarantee period is stated on your invoice in writing. If the same repair fails within that period, you call, we return, we fix it, and you pay nothing. You won’t get a technician who tries to blame the weather or the age of the unit or a different component that “just happened” to fail at the same time. We diagnosed the problem, we recommended the repair, we did the work, and we stand behind it. If we were wrong, that’s our cost to absorb, not yours.
See the difference
Before
After
Before
AfterWritten Price Before Any Work Starts
This is the habit that prevents most warranty disputes before they ever start. Every Brandt HVAC Co Marietta job begins with a written price. You see the full cost of the repair or maintenance call before you authorize anything. No one starts work on a verbal estimate. No one adds labor hours at the end because the job “took longer than expected.” The price you approve in writing is what you pay. That’s true on every job, with no exceptions. It’s how Devin runs this company, and it’s how every technician operates on site. In a market like Marietta, where AC repair calls spike every summer, that kind of clarity is rare and it’s the only way we’ll do business.
What Happens If Something Goes Wrong
Call (478) 662-5175. A live person picks up, day or night. Describe the problem. We’ll dispatch a technician. You don’t pay for the second visit. You don’t pay for the correction. You don’t pay a diagnostic fee to figure out what went wrong. Our guarantee is not a negotiation. It’s a commitment we made the moment we started Brandt HVAC Co Marietta, and we’ve kept it on thousands of calls since 2003. If the work wasn’t done right the first time, the next visit is free. That’s the promise, that’s the policy, and it doesn’t expire until the guarantee period we gave you in writing comes to an end.
Why We Work This Way
The name Brandt comes from an old word for a firebrand, a burning piece of wood carried out from a fire. It’s a fitting name for the work of keeping a home warm in January and cool in August. But a brand name only means something when the people behind it are willing to be measured by it. Every tech we send to a Marietta address wears our name on their shirt, and they know the guarantee that comes with it. We built this company on the idea that a repair is either done right or it’s not done. If it’s not, we come back. No charge, no argument, no delay. That’s the Brandt standard, and it’s the only one we accept.
Frequently Asked Questions
Our guarantee covers workmanship and parts on every repair we complete. The specific length of the guarantee is stated in writing on your invoice, and if the repair fails within that period, we return and fix it at no charge. This is our 365-Day Done Right Promise, and it applies to AC repair, furnace repair, and the workmanship on maintenance visits. Call (478) 662-5175 if you believe a repair has failed and we’ll schedule a return visit immediately.
Yes. We service all major residential brands, including Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. If we supplied and installed a part that fails within the guarantee period, we replace it at no cost. Parts warranties from manufacturers vary, but our workmanship guarantee is what we control and what we put in writing on every invoice.
Call us. Tell us what happened. We take it seriously because our name is on the door and on the tech’s shirt. If a visit didn’t meet the standard we promise, we’ll make it right. That could mean a different technician, a follow-up visit, or a conversation with Devin directly. You don’t pay for our mistakes, and you don’t get a defensive response when you point one out.
Yes. Brandt HVAC Co Marietta is licensed and insured, and every technician is background-checked and identity-verified under the Threshold Verified standard. We’re independently owned and operated as part of the Threshold Group family of home-service companies, established in 2003. You’ll know who’s coming to your door before they arrive, and they’ll show a photo ID badge when you answer.
Correct. If the same repair fails within the written guarantee period, the return visit is free under the 365-Day Done Right Promise. There is no diagnostic fee, no labor charge, and no parts cost for the correction. The only thing you might pay for is a separate, unrelated issue that requires a different repair, and even then, you’ll get a written price before any work begins. Call (478) 662-5175 for specific questions about your repair.
Call (478) 662-5175. A live person answers 24/7. Describe the symptom you’re seeing, and we’ll pull up your original repair record and dispatch a technician. You don’t need a claim number or a written explanation. You need a working system, and our job is to restore that as quickly as possible at no charge.
Written by Devin Marlowe, Owner at Brandt HVAC Co Marietta, serving Marietta and surrounding communities since 2003.