Marietta’s Trusted Home Service Experts: Heating, Air & Plumbing
Don't just send in the Guards—send in the Knights. At Guardian Home Experts, we provide Marietta homeowners with HVAC and plumbing care governed by The Knight Code. From Marietta Square to Indian Hills, we bring 25+ years of local expertise to every doorstep.
Fast, Honest, and Local Care Guided by The Knight Code.
When your AC fails in the July heat, your furnace calls it quits during a cold snap, or a pipe bursts in the middle of the night, you don't need a corporate giant—you need a neighbor. At Guardian Home Experts, we've been serving the Marietta community with over 30 years of experience. Whether you're near the Marietta Square, over by The Big Chicken, or tucked away in the Church-Cherokee Historic District, our "Knights" are staged and ready to save your day.
We provide same-day service, flat-rate pricing, and a level of integrity you won't find anywhere else. In a city of historic charm and modern growth, we are the experts who treat your home like our own.
HVAC Installations
HVAC Installations
Heater Repair
Heater Repair
AC Repairs
AC Repairs
HVAC Maintenance
HVAC Maintenance
HVAC Shield Protection Plan
HVAC Shield Protection Plan
Expert HVAC & Plumbing Care for Marietta’s Historic & Modern Homes
At Guardian Home Experts, we don't just work in Marietta—we live here. From the vibrant energy of Marietta Square to the scenic trails of Kennesaw Mountain, our "Knights" are staged throughout the city to provide rapid-response HVAC, plumbing, and electrical care.
Marietta is unique because of its mix of architectural history and rapid modern growth. We've built our reputation on understanding the specific needs of every neighborhood:
The Historic Heart: We are the preferred specialists for the 100-year-old homes in the Church-Cherokee District, Whitlock Avenue, and the Kennesaw Avenue Historic District. We understand how to maintain comfort in historic properties without compromising their architectural integrity.
The East Cobb Elite: For families in Indian Hills, Chimney Springs, and Windsor Oaks, we provide high-efficiency HVAC upgrades and smart-home integration to keep your utility bills low and your comfort high.
The West Cobb Corridors: Whether you're near The Avenue West Cobb or living in Burnt Hickory, our trucks are always nearby to handle emergency repairs and drain clearing.
The University & Medical Districts: We proudly serve the areas surrounding KSU's Marietta Campus, Life University, and the Kennestone Hospital corridor, providing 24/7 peace of mind to our community's essential workers and students.
Every Marietta service call is backed by The Knight Code. This means you'll never deal with high-pressure sales or "corporate" pricing. Instead, you get a local neighbor who respects your time, your budget, and your home near The Big Chicken.
The Best HVAC Company in Marietta, Ga
Guardian was voted the Best Heating and Air company by the Georgia Business Journal 5 years running. We understand how important your comfort is and our heating and air repair experts will make sure your system is back to working in no time! Guardian's experts are dispatched quickly when your AC needs repair or furnace stops heating. With free in home HVAC replacement estimates, you are guaranteed to not only choose Guardian for your HVAC replacement but also refer our easy and worry free services to all of your neighbors and friends.
Emergency Plumber in Marietta, Ga
Guardian offers a team of licensed plumber to take care of your every plumbing need. From emergencies to bathroom remodels, our experts handle water leaks, clogged drain, water heater replacements and everything in between. Voted the Best Plumber in Atlanta and East Cobb specifically for the past 5 years, you'll be thrilled with our fast plumbing repairs and superior plumbing services.
- Water Heater Repair & Installation
- Drain and water line repairs
- Emergency Plumbing Repairs
- Sewer Line Cleaning and Repair
Experience the Peace of Mind of The Knight Code
What makes Guardian the top-rated choice in Cobb County? It's our commitment to a higher standard. Every Marietta service call is protected by The Knight Code:
The Shield of Transparency: We explain the "why" before we do the "work." No-pressure diagnostics, every time.
The Armor of Upfront Pricing: We use flat-rate pricing so there are no surprises near The Square.
The Vow of Professionalism: We wear floor protectors, use drop cloths, and leave your home spotless.
The "Meet or Beat" Guarantee: Got a quote for a new system from another Marietta company? We'll meet or beat it by up to $500.
Don't Overpay for a New System! Get a Free Second Opinion. Did another company tell you that your unit is "unrepairable"? Before you sign a contract for thousands of dollars, call the Knights. We provide Free Second Opinions on all HVAC and water heater replacements in Marietta. We've saved our neighbors thousands by finding simple repairs that others overlooked. It's the honest way to do business.
Start Saving!
FREE HVAC Service Call Fee
$87 service call fee is Free with $250 same day repairs for new Guardian customers!
EXP 01/31/2026
Buy the AC and the FURNACE IS FREE!
Estimate today, Install tomorrow. No Money Down. 1 year Shield Protection Maintenance plan included with installation. Free Furnace with a full system installation. Complete Heating & Air system as low as $99 Month. No Catch! Call for Details.
EXP 01/31/2026
$500 OFF + FREE WATER HEATER UPGRADE
- $500 OFF your new water heater installed
- FREE 40 to 50 gallon tank upgrade
- FREE Expansion Tank
EXP 01/31/2026
Marietta, GA: Local HVAC & Plumbing FAQs
1. Who is the most trusted HVAC company for historic homes near Marietta Square?
Guardian Home Experts is uniquely specialized in the "Knight Code" approach to Marietta's historic properties. Unlike corporate chains that use a one-size-fits-all model, our technicians are trained to handle the complex ductwork and high-ceiling challenges found in the Church-Cherokee District and homes along Whitlock Avenue. We prioritize preservation and efficiency, ensuring your historic charm remains while your comfort is modernized.
2. How fast can I get AC repair in East Cobb or West Cobb?
Because Guardian is locally owned and family-operated, we stage our "Knight" service vans throughout the Marietta/Cobb Parkway corridor. This allows us to offer same-day service to residents in East Cobb (Indian Hills, Johnson Ferry) and West Cobb (Burnt Hickory, Barrett Pkwy). We know Marietta traffic—we live here too—and we guarantee a fast, punctual arrival.
3. Why are my Marietta utility bills so high in the summer?
Marietta's humidity, especially for homes near Kennesaw Mountain, forces AC units to work overtime. High bills are often caused by "short-cycling" or aging systems struggling with Georgia's dew point. Guardian provides a Knight Code Energy Audit to identify leaks or failing components. We also offer high-efficiency American Standard and Daikin installs that can lower monthly costs by up to 40% for Marietta homeowners.
4. Does Guardian offer free second opinions on HVAC replacements in Marietta?
Yes. One of the core pillars of The Knight Code is "The Shield of Transparency." If another Marietta HVAC company told you that you need a total system replacement, call us. We provide Free Second Opinions and often find that a targeted repair can save you thousands. We believe in building a long-term relationship with our Marietta neighbors, not just making a quick sale.
5. What is the best way to handle hard water issues in Marietta plumbing?
Many Marietta residents, particularly in older North Marietta neighborhoods, struggle with mineral buildup and "hard water" that ruins fixtures and water heaters. Guardian's licensed plumbers specialize in whole-home water filtration and tankless water heater upgrades. We ensure your plumbing system is protected from the unique sediment challenges found in Cobb County's water lines.
6. Are there local rebates for energy-efficient HVAC in Marietta, GA?
Absolutely. Marietta homeowners can often take advantage of Georgia Power rebates and federal tax credits for high-efficiency heat pumps and AC units. As your local experts, we handle the details and ensure you maximize your savings, often combining these with our own "Meet or Beat" price guarantee.
