How long does an AC installation take?

Most AC installations are completed in one day, and many straightforward replacements take four to eight hours. Jobs that involve new ductwork, a new indoor coil or air handler, or electrical upgrades can take longer. Your technician will give you a time estimate during the in-home evaluation so you can plan around the installation.

What size air conditioner does my home need?

The right air conditioner size depends on your home's square footage, insulation, windows, ceiling height, sun exposure, and ductwork, not square footage alone. A properly sized AC removes humidity and cools evenly, which matters in humid East Tennessee summers. That's why Aire Serv of Knoxville sizes systems during an in-home visit rather than quoting over the phone.

How do I know if my air conditioner needs to be replaced?

Your air conditioner likely needs replacement if it is more than 12 to 15 years old, needs frequent repairs, or can no longer keep your home cool on hot days. Other signs include rising energy bills, uneven cooling between rooms, excess indoor humidity, and a system that uses R-22 refrigerant, which is no longer produced in the U.S. A free in-home estimate can confirm whether replacement is the right choice.

What SEER2 rating should I look for in a new AC?

SEER2 is the federal efficiency rating for air conditioners, and in Tennessee most new split-system central air conditioners must meet at least 14.3 SEER2. Higher ratings use less electricity to deliver the same cooling, which can lower summer utility bills. Your technician will compare efficiency levels and upfront prices during your free in-home estimate so you can choose the right balance of cost and savings.

Should I replace my furnace or heat pump at the same time as my AC?

Replacing your furnace or air handler at the same time as your air conditioner is often worth considering when both are similar in age. Matched indoor and outdoor equipment typically runs more efficiently, and one installation can cost less than two separate projects. If your home uses a heat pump, it handles both heating and cooling, so a heat pump replacement covers both.

AC Installation and Replacement in Knoxville, TN

Free In-Home Estimates on a New Air Conditioner

Aire Serv of Knoxville makes AC installation simple for Knoxville homeowners, starting with a free in-home estimate and upfront pricing by the job, not the hour.

Free in-home replacement estimates
Same-day service on all calls
Financing available
Diagnostic fee waived if we repair instead
Licensed and fully insured

Free In-Home Estimates on a New Air Conditioner

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Why Knoxville Homeowners Choose Us for AC Replacement

Straightforward estimates, flexible payment, and work we guarantee.

Aire Serv of Knoxville provides free in-home estimates for air conditioner replacement. We don't quote new systems over the phone because the right AC depends on your home's size, layout, insulation, ductwork, and how much sun it gets during long Knoxville summers. A technician visits in person, evaluates your existing system, and explains your options with an upfront price by the job, not the hour. Same-day service is available, so you can get an evaluation quickly when your current unit has failed.
A new air conditioner is a major investment, and financing lets you spread out the cost instead of putting off a replacement your home needs. We also offer discounts for seniors, military members, veterans, first responders, and teachers, plus local promotions throughout the year. Ask about current savings when you schedule your AC install estimate so you can weigh every option with the full cost in front of you. Many homeowners use financing to choose a higher-efficiency AC that costs less to run through long East Tennessee summers.
Every AC installation is completed by licensed technicians, and Aire Serv of Knoxville is fully insured. Our workmanship and parts are guaranteed, warranties are available, and the job is backed by the Neighborly Done Right Promise®. If a repair turns out to be the better value for your current system, the diagnostic fee is waived when you approve that repair. That gives you a clear answer on repair versus replacement before you commit to a new system.

What to Expect During Your AC Installation

Every AC installation from Aire Serv of Knoxville begins with a load evaluation of your home, because an oversized unit short-cycles and leaves rooms clammy, while an undersized unit runs constantly through Knoxville's hottest weeks. Your technician reviews square footage, insulation, windows, and ductwork, then recommends an efficient system sized to your home. On installation day, the old equipment is safely disconnected and removed, and the new condenser and indoor coil are set in place. Refrigerant lines, electrical connections, and the condensate drain are installed to manufacturer specifications, and the thermostat is connected and programmed. Before leaving, the technician starts the system, checks refrigerant charge and airflow, and confirms the new AC is cooling evenly. You'll also get tips on filter changes and seasonal maintenance to protect your investment.

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What to Expect During Your AC Installation

The Aire Serv Advantage

From tune-ups and maintenance to heater repair and air conditioning replacement, we provide services that keep the air you breathe clean and keep your home or business at the perfect temperature.

Guaranteed Upfront Pricing

We quote by the job not the hour, so you know the final price won't change with no hidden fees.
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The Neighborly Done Right Promise^®

We'll get the job done right and ensure you are happy with our work.
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We Treat Your Home Like Our Own^®

Expertly trained, background checked, and committed to respecting your home and putting you first.
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We're here for you 7 days a week, 365 days a year, and we always take extra precautions to safeguard your home during our visits.
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Aire Serv of Knoxville

Aire Serv of Knoxville installs and replaces air conditioners throughout Knoxville, Oak Ridge, Powell, and Lenoir City. We also provide AC installation for homes in Clinton, Halls, Loudon, Lake City, and surrounding East Tennessee communities. From older homes with aging central air to new additions that need extra cooling, our licensed technicians deliver free in-home estimates and upfront pricing across the region.

HVAC Services in Knoxville and Surrounding Areas

Aire Serv of Knoxville offers a full range of cooling services, from new AC installation to ongoing maintenance. Along with central air conditioner replacement, we install ductless mini-split systems, heat pumps, and new ductwork, and we provide AC repair and seasonal tune-ups. Upgrades like smart thermostats, dehumidifiers, and air purification help your new system cool efficiently and keep indoor air comfortable.

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AC Installation Questions From Knoxville Homeowners

Replacing an air conditioner is a decision most Knoxville homeowners make only a few times, so it helps to understand the process before scheduling. These answers cover signs your AC needs replacing, how long installation takes, how systems are sized, what efficiency ratings mean, and when to replace matched equipment, so you're prepared for your Aire Serv of Knoxville AC install estimate.

Your air conditioner likely needs replacement if it is more than 12 to 15 years old, needs frequent repairs, or can no longer keep your home cool on hot days. Other signs include rising energy bills, uneven cooling between rooms, excess indoor humidity, and a system that uses R-22 refrigerant, which is no longer produced in the U.S. A free in-home estimate can confirm whether replacement is the right choice.
Most AC installations are completed in one day, and many straightforward replacements take four to eight hours. Jobs that involve new ductwork, a new indoor coil or air handler, or electrical upgrades can take longer. Your technician will give you a time estimate during the in-home evaluation so you can plan around the installation.
The right air conditioner size depends on your home's square footage, insulation, windows, ceiling height, sun exposure, and ductwork, not square footage alone. A properly sized AC removes humidity and cools evenly, which matters in humid East Tennessee summers. That's why Aire Serv of Knoxville sizes systems during an in-home visit rather than quoting over the phone.
SEER2 is the federal efficiency rating for air conditioners, and in Tennessee most new split-system central air conditioners must meet at least 14.3 SEER2. Higher ratings use less electricity to deliver the same cooling, which can lower summer utility bills. Your technician will compare efficiency levels and upfront prices during your free in-home estimate so you can choose the right balance of cost and savings.
Replacing your furnace or air handler at the same time as your air conditioner is often worth considering when both are similar in age. Matched indoor and outdoor equipment typically runs more efficiently, and one installation can cost less than two separate projects. If your home uses a heat pump, it handles both heating and cooling, so a heat pump replacement covers both.

Residential
Commercial