We Provide Quality Plumbing and HVAC Solutions!

At AJ Certified, we deliver you top-quality plumbing and HVAC services to ensure your systems run efficiently.

A person using a test instrument under a microscope and a man working on a project at a desk.

Saving Your Money With Efficient Plumbing Technologies

At AJ Certified we specialize in HVAC and plumbing repairs that keep your systems running efficiently, helping you avoid costly breakdowns. By promptly addressing leaks, faulty water heaters, clogged drains, and HVAC issues, our expert technicians ensure your home operates smoothly, preventing waste and saving you money on future repairs.

Trust us to maintain your plumbing and HVAC systems with professional, reliable service that protects your home and your budget.

Our Services

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Professional Plumbing and HVAC at Your Doorstep

We Are Committed To Providing Quality Service To All Our Clients

Heating Repair

Keep your home warm and efficient with our expert heating services. From installation to repair, we handle furnaces, boilers, heat pumps, and more. Our skilled technicians ensure reliable and energy-saving heating solutions for year-round comfort.

Cooling Repair

Get fast, reliable cooling repair to keep your home or business comfortable. Our skilled technicians quickly diagnose and fix issues with all AC systems, ensuring efficient performance and restoring your comfort.

Water Repair

Our expert Water Line Repair services ensure fast and efficient solutions for leaks, breaks, and blockages in your water supply lines. We quickly diagnose and fix any issues to restore your water flow and prevent further damage, providing reliable service you can count on.

Drain Plumbing

Our Drain Plumbing services cover everything from unclogging drains to addressing major blockages and drainage issues. We use advanced tools to clear pipes quickly and efficiently, ensuring your plumbing system runs smoothly.

HVAC Solutions

We offer expert installation, repair, and maintenance for heating and cooling systems, ensuring year-round comfort. Whether it's an emergency fix, upgrade, or tune-up, our technicians provide reliable service for your home or business.

Trusted In Our Industry And Community

Quality Brands

Why Choose AJ Certified?

At AJ Certified, based in Suwanee, GA, we pride ourselves on being a highly regarded HVAC and plumbing service known for our outstanding performance throughout North Georgia. With countless 5-star reviews from satisfied customers, we focus on building strong, long-term relationships with our clients. Our certified technicians are dedicated to providing reliable solutions for all your heating, cooling, and plumbing needs. Experience the difference of working with a team that genuinely values your satisfaction.

Our Service Areas Cover, But Are Not Limited To

Alpharetta
Braselton
Buford
Cobb
Cumming

Dacula
Dawsonville
Duluth
Flowery Branch
Gainesville

Hoschton
Jefferson
Johns Creek
Peachtree Corners
Lawrenceville

Norcross
Oakwood
Sugar Hill

What Our Clients Are Saying

Testimonials

David Hales

5 months ago

on

Service was okay but overpriced for the work done. Wouldn't recommend.

Richard Elijah

5 months ago

on

Tony's Water and Air Repair didn't fix the issue properly. Kept coming back with more problems.

Jimmy D

9 months ago

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Rockstar Plumber. Definitely recommend him. Amazing prices, def beats the big companies.

Tom Gan

11 months ago

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I had Tony come over to help me replace my water heater, and I have to say, his service was truly exceptional. From the start, he was on time, and throughout the entire installation, I found him to be very professional and helpful. He took the time to explain all the details clearly, making sure I fully understood the process before he began. I was impressed that the whole installation was surprisingly quick and simple, and I’m left feeling genuinely happy with the results. I highly recommend him for any future work you might need.

Ianic Tsurkanu

1 year ago

on

Tony and Chris installed my water heater same day!! Very fast, clean, honest, and reliable. Definitely will use him for all my issues for plumbing and hvac

Samuel Medrea

1 year ago

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Tony and his guys did a full duct cleaning job at my house. Cleaned both units and all the vents for a great price. He showed me the before and after pictures and there was a massive difference! Definitely give him a call!!

Marco Solea

1 year ago

on

I gave Anthony a call on my water heater, and with no hesitation came to fix all my issues. With the most flexible pricing and how fast he fixed the issue for us and respect he has for his customers is amazing! I highly recommend and will always call him if I have an issue again.

Freddy Ghimboasa

1 year ago

on

Tony did a fantastic plumbing job replacing all my toilets and fixtures in the house!! Definitely will call him again for all of his services!