Charleston & Summerville

New system options for Lowcountry homes

New AC & HVAC Systems
From $99/Mo

Explore AC replacement and financing options for your Charleston or Summerville home. Start with a free in-home assessment and receive written system, installation, and monthly-payment choices before you decide.

Compare repair and replacement honestly
See the complete installation scope in writing
Review financing options without pressure

Request My Free Assessment Or call (843) 585-0951

Licensed & Insured

4.9★ Google

Since 1947

Coastal Air Plus technician reviewing a new HVAC system with a homeowner beside an outdoor unit

Financing from$99/mo*on approved credit

Free assessmentTakes about 60 seconds

Request Your Free In-Home Assessment

Share your contact and service-address details so our team can prepare for the assessment.

* About the $99/mo example: Payment shown is an estimate. Actual monthly payment depends on the system selected, the financed amount, credit approval, and lender terms. Not all applicants qualify.

4.9 Google rating300+ verified reviews

Licensed & InsuredProfessional local team

Serving SC since 194779 years of service

Financing availableOptions on approved credit

Understand your estimate

Is repair still the smarter move?

A new system is a major decision. The assessment starts with your home, your current equipment, and what you actually need, not a one-size-fits-all sales pitch.

We will tell you honestly: if a repair is the more sensible option, we can discuss that too.

Compare My Options

Replacement is worth comparing when

01
The unit is around 10-15 years old or older.
02
Repairs are becoming frequent or the current repair quote is substantial.
03
Energy bills are rising or rooms cool unevenly.
04
The system uses R-22 refrigerant.

Clear choices, not mystery pricing

What Affects AC Replacement Cost?

A real recommendation needs more than square footage. We assess the system, installation conditions, and comfort goals before presenting written options. There is no fixed price before the home and system are evaluated.

01
Your home and comfort load
Home size, layout, insulation, sun exposure, ductwork condition, and room-to-room comfort all influence proper sizing and airflow corrections.
02
Efficiency and equipment
System type, efficiency level, thermostat and equipment-control needs, and compatible indoor and outdoor equipment shape the final options.
03
The installation itself
Electrical, drainage, installation access, permits, duct modifications, and removal requirements affect the complete scope of work.

Compare monthly payment choices

AC Financing and Monthly Payment Options

You can compare system and financing choices after the free in-home assessment. The $99/mo starting payment is an estimate; actual terms depend on the selected system, financed amount, credit approval, and lender terms.

Free in-home assessment

A licensed technician evaluates the existing system and your home's comfort needs.

System and payment options presented

You receive written equipment, scope, and financing options to compare before deciding.

Installation scheduled

After you choose an approved option, Coastal Air Plus schedules the installation.

Payment shown is an estimate. Actual monthly payment depends on the system selected, the financed amount, credit approval, and lender terms. Not all applicants qualify.

Ready to see your options?The assessment is free. The decision stays yours.

Request My Free Assessment

What's included

Your written installation scope covers the complete changeout

Every home is different, so equipment selection and final project scope are based on the property and the system chosen.

Questions? Call (843) 585-0951

Selected heating and cooling equipment
Matched indoor and outdoor components based on the approved option.
Professional installation labor
Installation by a licensed and insured local team.
Removal and haul-away of the old system
The existing equipment is removed and taken away.
Required permits for the installation
Applicable permitting included in the written project scope.
Post-installation system verification
System operation checked before the work is considered complete.

Coastal Air Plus team serving Charleston and Summerville homeowners — Licensed & Insured

Licensed Charleston & Summerville team

Serving SC Since 1947, 79 Years

You get a licensed Coastal Air Plus technician who evaluates the existing system, listens to your comfort concerns, and explains the replacement choices clearly. Your written options spell out equipment, installation scope, and payment choices before you approve work.

79years serving SC

4.9Google rating

300+verified reviews

Licensed, insured, and ready to help homeowners in Charleston and Summerville compare their next step.

Verified Google reviews

What Our Lowcountry Neighbors Say

Recent, verified Google reviews from homeowners across the Charleston and Summerville Lowcountry.

Carolann Ryan

Derrick did a wonderful job replacing our heat/ac units . Very professional, great prices , his work was outstanding Carolann and John . Highly recommend

Ken H

They came out fast. Very knowledgeable and friendly. Having a great AC company gives you such a peace of mind. No question I found a new company that I will now use everytime. It’s rare today when a business does what it says it will do on the date and time it says it will do it. Great company

Michael Carlisle

Fantastic service and vast knowledge of all facets of HVAC servicing/systems/repair. Derrick was extremely professional and easy to talk to. You will not be disappointed!!

Brian Holbrook

Great Experience from these guys. They installed a new heat pump in my home. The owner showed up got his guys started on the job and actually returned to check on the progress. Come to find out it’s a family business. Great work guys. We will definitely be recommending y’all to our friends.

Arnold Slone

Great crew. They installed my hvac in a few hours and have continued to maintain it since the installation.

david reagan

Amazing work and a true expert. I can’t say enough about these guys. There is no comparison when it comes to pricing or professionalism. These guys did so much more than what was in the proposal to ensure everything was done properly including rewiring so installing a vapor barrier with no additional charge to an already good price. Their knowledge of HVAC and the science behind it was astounding. They were already doing their best for me before going out of their way to do these things additionally. I can guarantee that this company is the absolute best choice you can make all around. I am lucky to have had them. I am from Charleston and know many HVAC owners and employees from other companies and would suggest these guys every time.

E Galicia

After doing extensive research on major HVAC businesses operating around Dorchester County I scheduled an appointment with Coastal Carolina Comfort LLC to compare prices and customer service. Fast-forward to a 3.5 ton Goodman Split Heat Pump Split System, with a 10-year manufacturer warranty, I am glad I called them. I hope this review helps anyone debating whom to hire for such a costly and stressful job. These folks are professional and transparent with costs. They are always available for any questions or concerns I might have. God Bless them.

Mary Luchansky

Derrick was very helpful and was not only able to clean the vent to the dryer but was also able to change out the light bulbs. I highly recommend their services.

Joseph Leto

Just had Derrick out to service my AC unit, he did an excellent job! Gave me key insights no BS. Thank you for that! See you in the fall!!

Common questions

New system and financing FAQs

Clear answers before you invite us in. Still wondering about your home? Call (843) 585-0951 and talk it through with a real person.

Talk with our team(843) 585-0951

What affects the cost of AC replacement?

AC replacement cost varies with home size and layout, equipment size and efficiency, ductwork condition, electrical or control needs, installation access, permits, and the final scope of work. Your in-home assessment produces written options; there is no fixed price before the home and system are evaluated.

Can I finance a new AC system?

Financing and monthly payment options are available for approved applicants. The $99/mo starting payment is an estimate. Actual monthly payment depends on the system selected, the financed amount, credit approval, and lender terms. Not all applicants qualify.

How do you determine which HVAC system fits my home?

A licensed technician assesses your home's size and layout, comfort concerns, existing equipment, and ductwork. Your written options explain the recommended equipment size, efficiency, installation scope, and payment choices before you decide.

How quickly can a new system be installed?

Installation timing depends on equipment availability, permit requirements, and the needs of your home. Coastal Air Plus will explain the expected schedule with your written options.

What warranty comes with a new system?

Warranty coverage varies by the equipment and installation option selected. The written proposal will identify the applicable manufacturer and labor warranty details.

Do you serve both Charleston and Summerville?

Yes. Coastal Air Plus serves homeowners in Charleston, Summerville, and nearby South Carolina Lowcountry communities.

Request system options

See what may fit your home and budget

Use the free assessment form above to start a conversation about replacement options for your Charleston or Summerville home. No obligation to choose a system during the appointment. Written equipment, installation, and payment options before you approve work. Financing is subject to credit approval.

Request My Free Assessment Prefer to call?(843) 585-0951