How Do I Know When My AC Needs To Be Replaced?

Consider replacement when systems are 10-15 years old, require frequent repairs, use R-22 refrigerant, produce weak cooling or poor humidity control, or cause rising energy bills. When major components like compressors fail on older equipment, replacement typically provides better value than expensive repairs.

What Is The SEER2 Minimum In Georgia?

The minimum SEER2 rating for new split system installations in Georgia is 14.3 as of the 2026 federal standards. This represents the baseline efficiency for replacement equipment, with mid-range systems achieving SEER2 15-16 and high-efficiency models reaching SEER2 18-20. Higher ratings deliver greater energy savings but involve higher upfront costs.

Can I Replace Just The Outdoor Unit?

Replacing only the outdoor condensing unit typically isn't recommended because mismatched indoor and outdoor components compromise efficiency, void manufacturer warranties, and create reliability concerns. Modern systems require matched components to achieve optimal efficiency.

How Long Does AC Replacement Take?

Most residential replacements are complete within 1-2 days, depending on system complexity, required ductwork modifications, and electrical upgrades. Straightforward equipment replacement typically finishes in one day, while complex installations involving zoning systems, extensive duct improvements, or electrical service upgrades may require additional time.

Is A Heat Pump A Good Option In Alpharetta?

Modern heat pumps are excellent for Alpharetta's moderate climate. They provide efficient cooling in summer and heating in winter, often reducing energy costs compared to separate air conditioning and gas heating. Heat pumps qualify for enhanced federal tax credits up to $2,000, making them financially attractive for replacement projects.

Will A New System Help With Humidity?

Properly sized modern systems with variable-speed technology run longer at lower capacities, maximizing moisture removal compared to oversized single-stage equipment. Enhanced dehumidification modes, correct refrigerant charge, and appropriate evaporator coil sizing all contribute to superior humidity control, addressing Georgia's summer moisture challenges.

Do You Offer Emergency AC Replacement?

We prioritize replacements when existing systems fail during peak cooling season. Same-day replacement depends on equipment availability and project complexity. Emergency consultation helps homeowners understand options, timelines, and temporary cooling alternatives while replacement proceeds.

How Much Does AC Replacement Cost In Alpharetta?

Replacement costs vary based on system size, efficiency level, brand, installation complexity, and necessary infrastructure upgrades. We provide detailed proposals after consultation. We also have financing options available.

What Happens To My Old R-22 System?

We dispose of all equipment containing R-22 refrigerant in accordance with EPA regulations to prevent environmental releases. R-22 systems cannot simply be converted to modern refrigerants due to differences in operating pressures and oil requirements.

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

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AC Replacement Alpharetta GA

One Hour Heating & Air Conditioning of North Atlanta

AC Replacement Alpharetta

One Hour Heating & Air Conditioning provides complete AC replacement services in Alpharetta, Milton, and surrounding North Fulton communities. We replace aging or inefficient systems with high-performance equipment that meets 2026 SEER2 standards, reduces energy use, and improves humidity control. Whether your system is 10+ years old, uses phased-out R-22 refrigerant, or struggles to cool your home evenly, we'll handle the full replacement process.

Why choose us?

Licensed Georgia HVAC contractor (GAREGCN2011384)
Financing available for system replacement and installation
Full-service removal, installation, and permitting
100% satisfaction guaranteed
Seasonal discounts available
Join the Comfort Club to get priority service

Call (404) 689-4168 to schedule your AC replacement consultation.

Professional AC Replacement For Alpharetta Homes

AC replacement includes removing old equipment and installing a new HVAC system that meets your cooling needs and current federal standards. One Hour Heating & Air Conditioning replaces central ACs, heat pumps, ductless mini-splits, and dual-fuel systems across Alpharetta's 30004, 30005, 30009, and 30022 zip codes.

Our replacement service focuses on SEER2 compliance, proper system sizing through Manual J load calculations, and integration with smart home technology. These upgrades provide measurable improvements in energy efficiency, humidity control, and consistent comfort compared to systems installed 10-15 years ago.

Alpharetta homes face unique challenges, including the R-22 phase-out, rising efficiency requirements, and high humidity. Our licensed technicians address these while helping you qualify for tax credits and rebates.

Call (404) 689-4168 for an AC inspection.

Is Your Alpharetta AC Ready For The 2026 Standards?

If your AC is over 10 years old, uses R-22 refrigerant, or falls below SEER2 standards, it likely won't meet 2026 energy and performance requirements. Upgrading it can save you money, improve comfort, and help you qualify for rebates.

The 10-Year Milestone And System Lifespan

If your AC was installed before 2015, it's likely nearing the end of its service life, especially in Alpharetta, where long summers mean extended air conditioner use. Systems that are 10-15 years old tend to lose efficiency, break down more often, and struggle to keep up with demand.
Replacement also becomes necessary when repair costs exceed system value and reliability decreases. Compressor failures, refrigerant leaks, and control board problems are common as HVAC systems age. When major components fail on older equipment, replacement typically makes more financial sense than expensive repairs.

Modern air conditioners are built to last 15-20 years with proper care. Upgrading before a total breakdown lets you plan your installation and prevent emergency breakdowns during peak summer heat.

Energy Inflation And Efficiency Gains

Older AC units rated SEER 10 to 13 use a lot more electricity than today's high-efficiency systems. Even the current SEER2 minimum of 14.3 performs better, and stepping up to a SEER2 16 or 18 system can cut cooling costs by 35-40% during Alpharetta's long cooling season.

That kind of efficiency pays off over time. Many homeowners save $50 to $100 per month during peak summer, adding up to $300 to $600 per year. These lower bills help offset the cost of a replacement while giving you more consistent comfort right away.

Modern ACs use variable-speed inverter compressors that adjust output smoothly instead of turning on and off at full blast. This helps lower peak demand charges, avoids energy spikes during startups, and keeps indoor temperatures more stable using less power.

Homeowners in Alpharetta may also qualify for valuable incentives. The federal Section 25C tax credit offers up to $2,000 for eligible heat pump installations. Georgia Power's Home Energy Improvement Program (HEIP) provides additional rebates for high-efficiency upgrades. These programs help bring down the total cost of a replacement when you choose qualifying equipment.

Humidity Control And Modern Technology

Older single-stage AC systems often cool too fast and shut off before removing enough moisture from the air. That's a common reason why Alpharetta homeowners feel clammy and uncomfortable despite the thermostat showing the desired temperature.

Modern variable-speed systems solve that issue by running longer at lower power. This gives them more time to pull moisture from the air while keeping the temperature steady. Inverter-driven compressors adjust output based on how much cooling you actually need, which prevents short cycling and keeps indoor air feeling drier and more comfortable.

Aluminum evaporator coils also play a key role. When sized and charged correctly, they remove moisture more efficiently than older or mismatched components. A professional installation ensures everything works together as it should, especially in Georgia's high humidity.
We also integrate smart thermostats with variable-speed systems to optimize both temperature and humidity control. These systems learn your habits and provide detailed energy data to help you save even more over time.

R-22 Refrigerant Phase-Out Impact

The EPA officially ended production of R-22 refrigerant in 2020. This has made sourcing it harder and more expensive. If your AC still uses R-22, repairs can be cost-prohibitive.

Modern systems now use R-410A or R-32 refrigerant, which not only improves efficiency but is also better for the environment. These refrigerants operate at different pressures and temperatures, so retrofitting an old system isn't an option and a full AC replacement is required.

Call (404) 689-4168 for an AC evaluation. We'll inspect your current equipment and walk you through energy-efficient options that meet 2026 standards.

Our Alpharetta AC Replacement Services

We replace central ACs, heat pumps, and ductless mini-splits across Alpharetta with high-efficiency systems that meet 2026 standards.

Central AC Replacement

Our central AC replacement service for Alpharetta homes includes replacing the entire outdoor condensing unit and the indoor air handler or coil. We also update the refrigerant lineset, electrical connections, condensate drainage, and thermostat.

We size each central air conditioner according to Manual J calculations. Oversized units are common in older homes and often lead to short cycling, uneven cooling, and poor humidity control. Correct sizing fixes these problems from the start.

Georgia's 2026 standards require a minimum SEER2 rating of 14.3. Mid-tier systems usually fall in the SEER2 15-16 range, while high-performance options reach SEER2 18-20. Higher efficiency can mean greater long-term savings, though with a higher upfront cost.

Heat Pump Replacement

Heat pump replacement provides efficient cooling in summer and heating in winter through a single system. They are an excellent choice for Alpharetta's moderate climate.

These systems are far more efficient than older models and often cost less to run than a separate air conditioner and gas furnace. Most heat pumps meet or exceed 2026 SEER2 cooling standards and deliver strong HSPF2 heating performance during colder months.

Homeowners replacing aging equipment can also take advantage of up to $2,000 in federal tax credits under Section 25C.

Each heat pump replacement includes the outdoor unit, indoor coil or air handler, refrigerant lines, and electrical upgrades to support heating and cooling modes.

Ductless Mini-Split AC Replacement

Our ductless mini-split AC replacement is ideal for Alpharetta homes where traditional ducted systems aren't practical or desired. We suggest these units for spaces without ductwork, home additions, or areas where separate room-by-room control is a priority.

Each system includes an outdoor condensing unit connected to one or more indoor air handlers, which can be wall-mounted or recessed into the ceiling. Multi-split configurations allow independent temperature control for each zone.

Installation complexity depends on system design. A single-zone replacement can typically be completed in a day. Multi-zone setups with multiple indoor units, longer refrigerant lines, and custom mounting or drainage needs require more time and planning for proper execution.

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

Our AC Replacement Process

In-Home Evaluation And Diagnostic Review

Our AC replacement process in Alpharetta starts with a thorough evaluation of your current system and home. We look at the age, efficiency, and condition of your equipment, review comfort issues you've been experiencing, and help determine whether it's time for replacement or if repairs still make financial sense.

We'll run diagnostics to check for signs of imminent failure or gradual decline in your system. This helps you decide whether to act now or schedule a replacement for later.

During the home assessment, we examine your ductwork, insulation, thermostat, electrical capacity, and drainage setup. These factors affect how the new system should be configured and what options make the most sense for your space.

We also discuss your priorities for efficiency, comfort features, noise levels, smart home integration, and budget. That way, we can recommend the right equipment with the right features, tailored to your goals.

System Recommendation And Equipment Selection

Once we've completed your evaluation, we walk you through equipment options that match your home's needs and your preferences. We explain key differences between models, including SEER2 ratings, single-stage versus variable-speed performance, and available comfort features like humidity control or advanced filtration.

We'll also talk through options from top brands such as Trane, Carrier, Lennox, Goodman, Rheem, Daikin, and Mitsubishi Electric. You'll know what each system offers in terms of comfort, energy use, and long-term performance.

Every recommendation comes with a clear explanation so you can make confident, informed decisions.

Old Equipment Removal And Disposal

Before installation begins, we safely remove your existing system while following EPA refrigerant recovery regulations. All refrigerant is reclaimed properly, and the old outdoor unit, air handler or coil, and any related parts are disconnected and removed.

We take care of secondary drain pans, old linesets, and outdated thermostats, disposing of all materials responsibly. Metals are recycled, and waste is handled in compliance with environmental guidelines.

Removing the old system also gives us the chance to clean coil surfaces, inspect connections, and prep the area for a clean installation. We protect your flooring and landscaping throughout the process to prevent damage during removal.

Professional Installation And System Integration

Our licensed technicians install the new outdoor unit with proper clearances, pad leveling, and electrical connections that meet local and national codes. We route refrigerant lines with proper insulation and support to maintain long-term efficiency.

Inside, we install the air handler or coil, connect ductwork, wire the thermostat, and set up condensate drainage. For variable-speed systems, we ensure advanced controls are wired correctly to take advantage of every feature.

We follow detailed installation protocols, including nitrogen purging, leak testing, and precision refrigerant charging to manufacturer specs. Every step is handled by EPA-certified technicians who understand the importance of long-term reliability and compliance.

If needed, we also perform ductwork upgrades to improve airflow, seal leaks, or resolve distribution issues discussed during your evaluation.

System Testing, Optimization, And Homeowner Walkthrough

Once installation is complete, we test your system to confirm it runs smoothly in all modes. We check airflow, refrigerant charge, system pressures, and electrical readings to ensure it's performing at or above expected specs.

We'll walk you through the entire system, including how to operate the thermostat, change filters, and use any included smart features. If your system connects to an app or integrates with smart home devices, we'll show you how to set that up too.

You'll receive all documentation, including permit approvals, warranty registration info, and maintenance guidance.

Before we leave, we conduct a final inspection to verify code compliance and ensure you're completely comfortable using your new AC system.

Call (404) 689-4168 to book air conditioning replacement.

Available Around The Clock

Have questions about your AC replacement or want to start planning your upgrade? We're available around the clock to take your call.

Call (404) 689-4168 for a consultation. Our team is here to guide you through system selection, sizing, and installation.

AC Replacement Cost Alpharetta

The cost of replacing your AC system in Alpharetta can vary depending on system size, efficiency level, and installation complexity. Most residential systems range from 2 to 5 tons, and total project costs depend on factors such as ductwork condition, electrical upgrades, and optional add-ons like smart thermostats or dehumidifiers. We provide a transparent quote, so you know exactly what's included with no hidden fees or surprises.

Coupons And Special Offers

We offer seasonal discounts and limited-time promotions to help reduce the upfront cost of your AC installation.

Financing Available

Qualified customers can access flexible financing options to spread out the cost of a new system. We'll go over these choices during your consultation so you can find a plan that fits your budget.

Get Comfort Club Membership

Want extra perks and preferred scheduling? Join our Comfort Club for exclusive benefits like priority service, system tune-ups, discounts on repairs, and guaranteed same-day appointments when you call before 2 p.m.

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

Schedule Your AC Replacement Consultation Today

Ready to upgrade your aging air conditioning system to modern, high-efficiency equipment designed for Alpharetta's climate and your home's specific needs?

One Hour Heating & Air Conditioning provides professional AC replacement services across Alpharetta, including central air systems, heat pumps, and ductless mini-splits. Our licensed technicians handle everything from evaluation and equipment selection to full installation and walkthrough.

Lower your energy bills, improve comfort and humidity control, and protect your investment with SEER2-compliant cooling systems engineered for North Fulton's demanding climate.

Call (404) 689-4168 for an AC replacement consultation.

FAQ For AC Replacement In Alpharetta GA

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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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