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Atlanta's Best Heating & Air Services 

When comfort can't wait, Guardian Home Experts delivers fast, reliable HVAC service in Cobb County—including Acworth, Kennesaw, Marietta, Smyrna, Mableton, Powder Springs, Austell, Vinings, and nearby. From emergency AC repair to furnace fixes, new system installs, and seasonal tune-ups, our licensed techs show up prepared, explain your options clearly, and back the work with written warranties.
Technician in blue shirt repairing a residential HVAC unit with tools and diagnostic equipment outdoors.

Our HVAC Experts are Ready to Help

Air Conditioning Services— At a Glance

AC repair & troubleshooting: Fast diagnosis for no-cool, short cycling, frozen coils, weak airflow, and drain clogs. We test electrical components, refrigerant pressures, blower performance, and static pressure—no guesswork.
AC installation & replacement: Right-sized systems (Manual-J), clear good/better/best options, permits handled, clean install.
Ductless mini-splits: Single/multi-zone comfort for bonus rooms, sunrooms, and garages.
Indoor air quality: Whole-home filtration, UV/IAQ, and dehumidification to combat Cobb County pollen and humidity.
Coverage: Acworth, Kennesaw, Marietta, Smyrna, Mableton, Powder Springs, Austell, Vinings, Woodstock and surrounding areas.

Heating Services — At a Glance

Heating repair (furnace & heat pump): Restore heat fast—igniters, flame sensors, pressure switches/inducers, control boards, heat strips, reversing valves. We fix root causes, not symptoms.
Furnace/heat-pump replacement: If equipment is at end-of-life, we provide side-by-side repair vs. replace math (cost, efficiency, comfort, warranty).
Safety & performance: Combustion/CO checks for gas furnaces, venting verification, temperature-rise and airflow balancing so every room feels right.
Maintenance: Spring & fall tune-ups to cut breakdowns and bills; priority scheduling and member discounts.

Blue and green Guardian service van with branding for heating, air, plumbing, and electrical services with contact info.

Guardian is Your Answer to HVAC Repair, Maintenance, and Installation

Dealing with HVAC problems like no-cool/no-heat, short cycling, frozen coils, weak airflow, strange noises, leaks, or surprise-high energy bills? Guardian Home Experts is the fast, reliable fix. Our techs use targeted diagnostics (electrical, airflow, refrigerant) to find the root cause—not guess—and our fully stocked trucks let us complete most same-day repairs. You'll get up-front, flat pricing before any work begins, plus written parts & labor warranties for peace of mind. We service all brands and system types (gas furnaces, heat pumps, straight-cool, ductless) and can handle related plumbing or electrical issues in one visit. For trusted **HVAC repair in Cobb County—including Acworth, Kennesaw, and Marietta—**choose Guardian: Quality Work, Quick Service, Exceptional Value. Guaranteed.

Why Cobb County Chooses Guardian

Same-day service (call early for best availability)

-Up-front, flat pricing—approve before we start

-Fully stocked trucks to finish most repairs in one visit

-All brands & systems: gas furnaces, heat pumps, straight-cool, ductless mini-splits, smart thermostats

-Maintenance Shield Protection Plan - we do all the leg work and keep you informed and your system running smooth

-One call, multiple trades: HVAC + plumbing + electrical when issues overlap

-Local everywhere: Town Center/Barrett Pkwy, KSU/Chastain, Legacy Park, West Cobb, East Cobb, Cumberland/Vinings, Downtown Marietta, Wade Green & Jiles, Acworth


We handle it ALL!

Ice around your outdoor unit and lines

Hot & Cold Spots in your home

No Cooling or No Heat

Strange Noises

Utility Costs have increased

Takes a long time to get to set temp

Flickering and Dimming lights when your unit Cycles 

Your HVAC unit is constantly running

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Connect with the Best Team

New Customer Special

At Guardian Home Experts, we're excited to welcome new customers with a special deal: enjoy your first heating or air service with us, and we'll waive the service call fee—completely free! Find out why homeowners throughout Atlanta rely on us for quality work, fast service, and unbeatable value!

$87 Air Conditioning (or) Heating Tune Up 

25 Point Inspection plus….
  • Free Water Heater Check Up
  • Free Insulation Check
  • Free Air Quality Check

EXP 09/30/2025

Some restrictions may apply. Not to be combined with any other offers or discounts. Residential Only. Coupon must be presented at the time of service. Call for further details. Price per system.

Your Questions Answered

Do you offer same-day HVAC repair in Cobb County?
Yes—morning calls have the best shot. We route teams through Acworth, Kennesaw, Marietta, Smyrna, and Mableton daily.

How much does AC or heating repair cost?
It depends on the issue (e.g., capacitor vs. blower/inducer motor). You'll see a flat, all-in price before work begins.

Can you service my brand and system type?
Almost certainly. We repair and install all major brands, including gas furnaces, heat pumps, straight-cool condensers, and ductless mini-splits.

Will you try to sell me a new system?
Only if the numbers make sense. We'll show repair vs. replace math—expected life, energy savings, comfort, and warranty—so you decide.

Do you handle air quality and humidity problems?
Yes. We install whole-home filtration, UV/IAQ, dehumidifiers, and correct airflow/duct issues that drive hot-and-cold spots.

What areas of Cobb do you cover?
All of Cobb County: Acworth, Kennesaw, Marietta, Smyrna, Mableton, Powder Springs, Austell, Vinings, Roswell, Woodstock—and nearby neighborhoods.

Do you offer financing?
Yes—flexible monthly options for larger repairs and replacements (subject to credit approval).

What if my issue is electrical or plumbing related too?
We've got you. Guardian coordinates HVAC, electrical, and plumbing in one visit whenever possible.

Some Words From 
Our Customers

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These guys were recommended to me by a friend and have not disappointed. They care about repeat business and treat the customer right.

Our most recent tech was Justin and he was professional, even entertaining our curious cat while he performed maintenance on our furnaces. 5 stars!

- Roger A. 

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I was so pleased with the installation of my new A/C and furnace that I have scheduled the installation of a new water heater with Guardian as well. Fantastic service, skilled and knowledgeable technicians, competitive prices on quality systems.

- Alane L.

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Had a wonderful first experience using Guardian for our electrical needs! It’s nice to know there are still good, honest companies out there that are committed to their customer’s needs without charging a fortune. Will most definitely be using again!

- Doug A.

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When my air conditioner stopped working, I found Guardian online and was thrilled with their service! My old unit was on it's last leg and the technician gave me options. He showed me what needed to be repaired, walking me through the problems. The technician gave me the repair costs and also provided me with some options for replacing my HVAC system. It made sense for me to replace my unit and that process went so smoothly. No pushy sales. Great installation. No question this is an honest company that provides the best customer service I have had from any HVAC company. I will be recommending them every chance I get.

- Spencer M.

Some Things to Pay Attention to When Choosing Your HVAC Company

For top-quality HVAC repair and replacement in Cobb County, trust Guardian Home Experts—your local heating and air specialists. We know how crucial it is to have dependable, licensed professionals working on your home's HVAC system. That's why our skilled technicians provide customized solutions tailored specifically to your needs. Whether you require expert air conditioner repairs or a brand-new HVAC system installation, our dedicated team in Cobb County is here to answer your questions and deliver outstanding service. Count on us to keep your home comfortable, cool, and worry-free throughout every season.

Experience

Experience

At Guardian Home Experts, we understand the value of experience and expertise when it comes to your heating, air, and plumbing needs. Our owner and team bring over 30 years of industry knowledge to every job, ensuring you receive the right solutions the first time. We’re fully licensed, bonded, and insured—giving you peace of mind and protecting your home throughout the process. Too often, we see the consequences of “handyman specials” with improperly repaired or poorly installed equipment that ends up costing homeowners more down the line. While competitive pricing matters, be cautious of companies offering prices that seem too good to be true. At Guardian, we prioritize quality and reliability. Our professionals undergo weekly training and have years of experience to provide you with the best service possible. When you choose us, you’re choosing a team committed to doing the job right, every time

Reliability is Important 

Reliability is Important 

Will your heating and air company be there when you need them most? At Guardian Home Experts, we believe you deserve to be a top priority. Don’t get caught in the frustrating situation of trying to reach a company that’s too busy to help you promptly. Wondering how to avoid this? Just ask the right questions: How many technicians do they have on staff? How many installation teams? If a company has only a handful of employees, you could face long wait times. On the other hand, bigger isn’t always better—large companies with hundreds of employees can come with higher costs and less personal attention. Guardian Home Experts stands apart from many other companies in metro Atlanta. As a locally owned and operated business (and we really are), we focus on building strong relationships with our customers. Just take a look at our reviews! When your heating or air system needs attention, we make sure you’re our priority. We’re fully staffed and ready to handle your call quickly and professionally—because your comfort can’t wait.

Company Guarantees & Reviews

Company Guarantees & Reviews

At Guardian Home Experts, your satisfaction is our top priority—guaranteed 100%! We go above and beyond to ensure you’re completely happy with both our service and your overall experience. Our goal is to build lifelong relationships, not just finish a job and disappear like some of our competitors. When it comes to reviews, quality matters just as much as quantity. The most helpful reviews are those that clearly explain what you can expect, whether positive or negative. Every company may encounter unhappy customers from time to time, but how a company responds makes all the difference. If you see a pattern of negative feedback, it’s a sign to proceed with caution. Doing your research upfront can save you both time and money. We’re proud to be a 5-star rated company, and it shows in everything we do. While no one is perfect, we are committed to promptly addressing our customers’ needs and ensuring your complete satisfaction every step of the way.
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GREATER ATLANTA

Meet the Home Comfort Experts