How Long Does AC Installation Take?

Most central air conditioning installations take one to two days, depending on system complexity and whether ductwork modifications are needed. Ductless mini-split installations are often complete in a single day. We provide a specific timeline during your estimate.

How Do I Determine The Size Of The AC System I Need?

System size depends on your home's square footage, insulation levels, window quality, ceiling height, and other factors measured during a Manual J load calculation. An AC installation contractor must perform this analysis rather than rely on general rules of thumb, which often lead to incorrect sizing.

What Does SEER2 Mean For A New AC Installation?

SEER2 is the updated seasonal energy efficiency ratio that measures cooling output relative to energy input. Higher SEER2 ratings indicate better efficiency. The minimum for new installations in Georgia is SEER2 15, but systems ranging from SEER2 16 to 20+ are available for homeowners prioritizing long-term energy savings.

Are Heat Pumps Suitable For Alpharetta's Climate?

Modern heat pumps are well-suited to Alpharetta's moderate climate, providing both heating and cooling in a single system. They handle Georgia's mild winters efficiently and are a cost-effective alternative to traditional HVAC setups.

Can A New AC System Improve Humidity Control?

Properly sized systems with variable-speed blowers and correctly matched evaporator coils provide superior dehumidification compared to oversized equipment. Two-stage cooling systems run longer at lower capacity, which allows more moisture removal during operation.

When Should I Replace Rather Than Repair My AC?

Consider AC replacement if your system is 10 to 15 years old, uses R-22 refrigerant, requires frequent repairs, or produces inconsistent cooling. The cost of repairs and reduced efficiency often exceeds the value of extending an aging system's life by just a few more years.

What Service Areas Does One Hour Heating & Air Conditioning Cover?

We provide home AC installation throughout Alpharetta, including Windward, Crabapple, Ocee, White Columns, Glen Abbey, Country Club of the South, and areas near Wills Park, Big Creek Greenway, Ameris Bank Amphitheatre, and Alpharetta Cityview. We also serve nearby Milton, Johns Creek, Roswell, Cumming, and Forsyth County.

What Maintenance Does A New AC System Need?

New systems require annual professional maintenance, including refrigerant level checks, coil cleaning, AC compressor inspection, blower assessment, and electrical connection testing. You will also need to schedule filter changes every 30 to 90 days, depending on the filter type and your home's indoor air quality.

AC Installation Alpharetta, GA | (404) 689-4168 | One Hour Heating & Air Conditioning

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AC Installation Alpharetta GA

One Hour Heating & Air Conditioning of North Atlanta

AC Installation Alpharetta

One Hour Heating & Air Conditioning offers AC installation in Alpharetta, GA. We install central air conditioners, heat pumps, and ductless mini-split systems from trusted brands. Every installation includes a full in-home evaluation, expert setup, and clear, upfront pricing.

Why choose us?

Punctual, friendly, and knowledgeable technicians
Special offers and seasonal discounts available
Available round-the-clock for emergency service
100% satisfaction guarantee on all work
Financing options available for qualified customers
Licensed technicians (GAREGCN2011384)

Call (404) 689-4168 for air conditioner installation service.

Professional AC Installation For Alpharetta Homes

Our AC installation service is more than swapping out old equipment. We take the time to assess your home, inspect the existing ductwork, and ensure the new system is the right fit for Georgia's humidity and cooling demands.

The careful sizing by our licensed technicians prevents short cycling, inconsistent temperatures, and unnecessarily high energy bills.

We serve homeowners throughout Alpharetta, including Windward, Crabapple, Ocee, Glen Abbey, and neighborhoods near Avalon and North Point Mall. Whether you're replacing an aging system or upgrading to a SEER2-compliant unit, we ensure your installation is done right the first time.

Call (404) 689-4168 to discuss your home cooling needs.

Types Of AC Systems We Install

We install a range of energy-efficient AC systems, including central air, heat pumps, and ductless mini-splits, to match your home's layout, comfort needs, and budget.

Central Air Conditioning

Central air conditioning systems typically use a split configuration, with an outdoor condenser unit and an indoor air handler. This remains the most common whole-home cooling setup, especially in multi-story homes throughout White Columns and Country Club of the South. We install variable-speed and two-stage systems that adjust output to match demand for improved comfort.

Heat Pumps

Heat pumps cool your home in summer and heat it in winter. They're a great fit for Alpharetta's moderate climate and offer a more efficient alternative to traditional HVAC setups. Many homeowners choose heat pumps to reduce energy use year-round.

Ductless Mini-Splits

Ductless mini-split systems are ideal for spaces that lack traditional ductwork, such as home additions, finished basements, or older homes. These systems consist of an outdoor condenser and one or more indoor air handlers, allowing for zoned temperature control. They have advanced inverter technology that offers quiet operation, energy efficiency, and consistent comfort in individual rooms or zones.
Call (404) 689-4168 for a consultation. We will discuss your options and recommend the best fit based on your home's layout, comfort goals, and budget.

Why Proper AC Installation Matters In Alpharetta

Proper AC installation helps your system handle Alpharetta's heat and humidity, meet new SEER2 requirements, and avoid problems tied to outdated refrigerants like R-22.

Humidity Control In North Fulton County

Georgia summers bring heat and humidity. A properly sized evaporator coil and correctly charged refrigerant lineset ensure your system removes moisture effectively. Oversized units cool too quickly without adequate dehumidification. This leaves your home damp or muggy even when the thermostat shows your target temperature.

SEER2 Compliance And Efficiency Standards

As of 2023, new federal efficiency standards require SEER2 ratings instead of the older SEER scale. Systems installed in the Southeast must meet minimum SEER2 15 (equivalent to SEER 16 under the old rating). We install Energy Star-certified units that exceed these minimums, reducing long-term operating costs.

Refrigerant Transitions And R-22 Phase-Out

The EPA regulations have phased out R-22 refrigerant due to its ozone-depleting properties. It is now illegal to manufacture or import R-22 in the U.S., and it is increasingly expensive to source for older HVAC systems. If your current system uses R-22 and is 10 to 15 years old, replacing it with a modern R-410A or R-32 system is recommended rather than continuing to invest in costly repairs and limited refrigerant supplies.

Our AC Installation Process

Our AC installation process begins with a system evaluation, expert recommendations, and code-compliant installation to make sure your new AC works reliably from day one.

In-Home Evaluation

We visit your Alpharetta home to assess your current system, ductwork condition, insulation levels, and specific comfort concerns. This allows us to identify issues like thermal inefficiency or airflow restrictions that could affect new equipment performance.

System Recommendation

Based on our assessment and your preferences, we recommend equipment from trusted manufacturers. We explain key differences in performance, efficiency ratings, and warranty options so you can make a confident choice.

Professional Installation

Our AC technicians install your new condensing unit, air handler, and refrigerant lineset in accordance with manufacturer specifications. We ensure proper airflow, refrigerant charge, and electrical connections. All work complies with Georgia building codes and local permitting requirements.

System Testing And Walkthrough

After installation, we test cooling output, airflow balance, thermostat programming, and safety controls. Our air conditioner installers walk you through your new system's operation, maintenance requirements, and any smart home integration features. You receive all manufacturer warranty documentation and service records.

Call (404) 689-4168 for professional air conditioning installation service.

AC Installation Cost Alpharetta GA

AC installation costs vary because no two homes have the same layout, comfort needs, or system requirements. The final price depends on the type of system selected and the scope of work involved. A basic central air system for a smaller home will cost less than a high-efficiency heat pump with zoning for a larger property. Project complexity also plays a role, especially when updates to ductwork or electrical components are needed.

Factors that affect AC installation pricing include:

Home size and layout
System type (central air, heat pump, ductless)
Efficiency rating and SEER2 requirements
Existing ductwork condition or needed modifications
Electrical upgrades or refrigerant lineset extensions
Installation complexity and labor requirements

Choosing the right system and installing it correctly can reduce long-term costs. We provide transparent estimates so you know exactly what to expect before the job begins.

Coupons And Special Offers

We offer seasonal coupons and limited-time promotions to help reduce upfront installation costs.

Financing Available

Financing is available for qualified customers to help make your AC installation more manageable. We'll go over the available options after we've completed the in-home visit and system sizing, so you can decide what works for your budget.

Get Comfort Club Membership

Want priority service and exclusive perks? Sign up for our Comfort Club and enjoy front-of-the-line service, system tune-ups, discounts on repairs and new equipment, plus guaranteed same-day appointments when you call before 2 p.m.

Call (404) 689-4168 to schedule AC installation service.

Schedule Your AC Installation Consultation

Ready to replace your aging air conditioning system with a properly sized, energy-efficient unit designed for Alpharetta's climate?
One Hour Heating & Air Conditioning provides transparent estimates, expert recommendations, and professional installation.

Call (404) 689-4168 to book an AC installation in Alpharetta, GA.

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We Have a Reputation

For Being Punctual, Friendly and Knowledgeable

4.8

(178761 reviews)

Denise Gordon

in the last week

“Most recent service. 2/10/26 Roy and the other technicians did an excellent job installing my new heating/ac system. Roy was patient answering my questions about what was going to happen. He is polite/ friendly and very knowledgeable. Roy worked well with the crew, they all had a specific job, and they communicated well to get things done. I am very pleased with the service, and my new heating system.”

Zach Treptau

2 weeks ago

“Pablo did an exceptional job with our new furnace installation. He was polite, informative, and thorough throughout the process. Everything was cleaned after the installation was finished as well. Northern One has a great feature where you get a text message when your tech is heading to your location, along with their picture and name so you know who is coming. They were also prompt in showing up and diagnosing the initial furnace issue and also with the installation of the new unit.”

Philip Martin

2 weeks ago

“Would highly recommend One-Hour. An unexpected problem with our air-conditioner was met with an excellent and problem solving response from One-Hour! Thank you Gary and Josh!! Thank you Binson for your professional service and communication while on-site, and your recommendations. So appreciate the service and value of One-Hour and consider them a trusted source. .”

Sue Lavey

2 weeks ago

“Oscar was an excellent technician .. very polite and courteous and very knowledgeable. The unit we had partially failed so he had to do a lot to get it backup and running. He always let us know what time he would arrive and would detail what needed to be done.✅ We definitely recommend Oscar and would use him again.”

glenn Brown

2 weeks ago

“Scotty performing a 1 week follow up of our complete hvac installation including new ductwork. Awesome company. All the installation crew were great to work with.”

Christina Principe

2 weeks ago

“We have been customers of One Hour Air for years. The company has been through some changes. Despite those changes in ownership we have found that their technicians are consistently friendly, patient, knowledgeable, and do follow up. During our most recent visit we had to replace the unit. Sheldon was so helpful and patient as he explained the pros and cons of our options and they were here doing the work just a couple of days later. The team was efficient and cleaned up well after each day of work. On the last day, Andrew and Carlos completed checking the ductwork, replacing the vents, and installing the insulation we'd also requested. What impressed most is, although it was late in the day, they took the time to walk us through the system, answer our questions, and make some little adjustments here and there that we requested for presentation's sake. We appreciate Sheldon who took the time to follow up the next week to check the work, answer some more of our questions, and update us on the status of our air filters. As a whole, technicians communicate very well from their anticipated arrival time, to the actual work, then the debrief of what was done. We have found that they work to standard despite the time. For customers who are more computer savvy, they are increasing their use of electronic contracts to include a virtual notary, same-day approval for loans (with decent rates), and the permitting of the work. My only recommendation to the company is to keep in mind that not everyone is technologically savvy and it may be helpful to have administrative staff available to provide guidance. Also, keep in mind that in these times of e-mail and telephone scams it would be very helpful to know to expect e-mails and what to expect of the links. Overall, we have been customers of One-Hour Air for years and expect to continue with them. We really appreciate the team and feel so much better about the air quality in our home. :)”

Dillon Mulkey

2 weeks ago

“Called a few months ago and they sent a guy named travis.. I DO NOT RECOMMEND Travis.. all he will do is Bang and hit your furnace then proceed to tell you oh well you're going to need a whole new furnace. While he's being rude as can be for no reason. Will compare his living to your living.. but he put a part on it made it work for the time being didn't put none of the panels back on or anything.. few months go by and the furnace is now blowing cold air. So we gave them another chance. They just sent a guy named Cory over and it took him 5 minutes to figure out was wrong . Ordered the part the next day and a guy named marquis came and put it on cleaned up everything . I just wanted to thank them for helping me out when Travis tried to make a dollar out of me. If they try to send you a guy named Travis just send him back where he came from.. I recommend Cory . Thank you sir”

Tiny M

2 weeks ago

“Repair service is great quick and helpful Nate was a very knowledgeable and listen to what questions I had. The sales reps are a bit different but nothing to hold against this company thanks for all your help and care. On one of the coldest weeks 🥶 before it became a problem.”

Luis V

2 weeks ago

“Joshua is a great man! He came to my house when he said he would and diagnosed and repaired my system. He didn't try and just sell me on getting a new system. He educated me on what my system is and advised me on what I'd be looking for in the future if I decided on a new system. I really appreciate that he took his time and made sure that my heat was working with the on coming cold front we got rolling in. I feel blessed to have met him, he is a great man! One Hour Heating and A/C have a huge asset in him and they will be the only company I contact for any HVAC concerns in the future. Do not hesitate to call on this company for any of your HVAC needs. Thanks again Joshua!”

Sushmita Shankar

2 weeks ago

“They were very prompt in replying back and were willing to come out the next day after the snow and bad weather and troubleshoot my heating system that had stopped working. Noah the technician was very knowledgeable and made sure all was working appropriately before he left. Which was like 4 hrs later. Reliable company. Would recommend them for sure!”

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