24/7 Furnace Installation & Replacement in Decatur, GA

A dependable furnace makes all the difference on cold winter nights, even in a mild climate like Decatur’s. Ace & A Heating and AC has provided furnace installation in Decatur, GA since 1975, and our factory-trained technicians handle every job with the same honest, straightforward approach that’s kept homeowners across the greater Atlanta area coming back for 50 years.

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What Your Neighbors Are Saying About Us

They always treat me well. They're always on time for appointments. I appreciate the knowledgeable technicians--especially Fred! If you're looking for someone to service your unit I highly recommend this company.

I have used Ace & A Heating & Air Conditioning for over 10 years. I fired the rest and hired the best. They have always been courteous, and professional. They have replaced both my heating and air conditioning units. Installation techs. very thorough and professional. Clean-up 5 stars. Office staff 5 stars and roses.

A year and a half ago they installed a complete new system for us. I needed them back today to take care of my poor upkeep of it! They were fantastic both times! They came relatively quickly and were extremely thorough. Today Jermaine checked off all the boxes and then some. He made sure every aspect of our system inside and out was in great working order.

We have been with Ace & A for over 15 years and continue to have great service! Everyone at the office is friendly, helpful, and knowledgeable. We've liked all of our technicians over the years, but Fred, who has serviced our systems for the past handful of years, is absolutely wonderful! He's very honest and knowledgeable and so friendly at our appointments. We highly recommend Ace & A to anyone who needs service.

When we bought our current home, we signed up for Ace & A's annual maintenance agreement on the recommendation of the previous owners and have had very positive experiences with them. What I like best is I can email them if something comes up outside regular business hours that needs prompt attention but is not an emergency, and they respond very quickly and put me on the schedule for the next business day.

First thing Monday morning, I got a call back telling me the part had been ordered and was being delivered the same day. Before the end of the day, the technician came back with the part and installed it promptly and professionally. They also answered my many questions and were very professional. Definitely going to use this company again.

Signs You Need to Replace Your Furnace

Furnaces give off warning signs well before they fail. Here’s what to watch for:

Rising energy bills
Frequent repairs needed
Uneven heating throughout the home
Strange noises during operation
Yellow pilot light instead of blue
The furnace is 15 years old or more

If you’re noticing several of these signs at once, furnace replacement in Decatur, GA, is often the more cost-effective choice compared to continuing to repair an aging system.

How Long Do Furnaces Typically Last

Most furnaces last between 15 and 20 years with proper maintenance, though the exact lifespan depends on usage, installation quality, and the consistency of service. A furnace that’s well past this range is more likely to break down at the worst possible time, usually during the coldest stretch of the season.

Even furnaces that are still technically running can become less efficient as they age, leading to higher energy bills and less comfort. Newer furnaces are built with better technology and higher efficiency ratings, so replacing an older unit often pays for itself over time through lower monthly costs. If your furnace is showing its age, it’s often smarter to replace it on your own timeline rather than waiting for a breakdown.

Furnace Options to Choose From

Choosing the right furnace depends on your home’s size, your budget, and your heating preferences. Gas furnaces remain a popular choice for their efficiency and lower operating costs, while electric furnaces can be a good fit for homes without existing gas lines. Efficiency ratings also vary across models, and higher-efficiency units typically cost more upfront but save money over the life of the system.

Our technicians walk you through the available options based on your specific home and needs, rather than pushing the most expensive unit on the lot. New furnace installation is an investment, and we want you to feel confident in the system you choose before we begin any work.

Our Furnace Installation & Replacement Process

When you choose Ace & A for furnace installation in Decatur, GA, our technician starts by evaluating your home’s size, ductwork, and heating needs to recommend the right system for your home. If you’re replacing an existing furnace, we handle the removal of your old unit and make sure your new furnace is properly matched to your home’s ductwork and electrical requirements.

Once the new system is installed, we test it thoroughly to confirm everything is working as it should before we consider the job complete. We walk you through operating your new furnace and answer any questions you have. Every installation comes with a manufacturer’s warranty, and financing options are available for homeowners who need flexibility.

Why Choose Ace & A HVAC, Heating & AC Repair

Homeowners across the greater Atlanta area have trusted Ace & A since 1975. Here’s what you get when you call us:

Family-owned since 1975
A+ BBB rating
Factory-trained technicians
Service on all major furnace brands
Transparent pricing with written estimates
Manufacturer warranties on major installs
Financing options available
24/7 emergency service

We take the time to recommend the right system for your home and budget, not just the easiest sale.

Frequently Asked Questions

How do I know if I need a new furnace?

Common signs include rising energy bills, frequent repairs, uneven heating, and a furnace that’s 15 years or older.

How long does furnace installation take?

Most furnace installations are completed in a single day, though larger or more complex jobs may take longer.

What size furnace do I need for my home?

Sizing depends on your home’s square footage, insulation, layout, and existing ductwork. Our technician evaluates all of these factors before recommending a system.

Is it worth replacing an old furnace before it fails?

Yes. Replacing an aging furnace before it breaks down helps you avoid emergency repairs and lets you choose the right system on your own timeline.

Does a new furnace come with a warranty?

Yes. All of our furnace installations include a manufacturer’s warranty for added protection and peace of mind.