Air Conditioning

Air conditioner unit

Coastal Air Plus is your #1 HVAC contractor in Myrtle Beach, SC, and the surrounding communities. We are the leading company for all of your air conditioning needs. If you need repairs, maintenance, or a brand new system installed, the technicians at Coastal Air Plus are the qualified and professional crew for the job.

We provide the highest quality service for your air conditioner. We also aim to educate and inform our customers. Informed decisions are good decisions. We want you to feel confident we are qualified to perform the service for which you are hiring us.

How Much Money Can a New Air Conditioner Save You?

Our SEER2 (Seasonal Energy Efficiency Ratio 2) energy savings calculator can help determine how much you could save on your utility bills. Simply enter your current unit’s SEER value and compare it to a newer, more efficient SEER2 unit. You can even customize it to better match your home’s system for a more accurate calculation.

SEER2 Energy Savings Calculator

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This calculator does not guarantee actual costs or savings and is only to be used for educational purposes.

Customize to Your Home

Adjust these settings for a more accurate calculation:




Rate (¢/kWH)


Average Annual Cooling Hours***

Historical Comparison

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** Data from U.S. Energy Information Administration
*** Data from 2002 EPA study

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Air Conditioning Basics

The four main components to your air conditioner are:

Condenser: The condenser is the outside metal unit and where the gas from the compressor is condensed into a liquid. The gas entering the condenser is very hot. The temperature is then lowered, so the gas can convert back to a liquid.

Compressor: The compressor is inside the condenser. It circulates the pressurized refrigerant, to concentrate the heat, and changes the low pressure gas to high pressure.

Evaporator: The evaporator is the part of the system inside the home. In simple language, it absorbs the heat from your home.

Expansion Valve: The expansion valve controls the amount of refrigerant in your system.

All of these pieces are connected by a copper tube that handles refrigerant, creating a closed loop. Heat is collected in the evaporator, sent outside to the condenser. The heat is removed, and the cool air is recirculated back into your home.

AC Facts

An Air Conditioner Doesn’t Create Cool Air.
What happens in the AC process is actually the removal of heat from the air. Your AC uses a chemical called refrigerant to remove heat and transfer it outside. The warm air runs through the lines and coils in your unit and goes from liquid to gas and back again. During this process, the refrigerant removes the heat and transfers it elsewhere so that when the air comes out the other side, it is cool.

Your AC Will Remove Humidity.
Lower humidity helps the overall comfort level in your home by making you feel cooler, even if the temperature is the same.

Your Air Filter Needs To Be Checked And Replaced Every Three To Six Months.
(depending on the manufacturer’s recommendations)
A dirty air filter restricts your air flow, which reduces efficiency, costing you money, and over time can put stress on your unit and could cause a costly repair.

Maintenance, Maintenance, Maintenance.
Your air conditioner needs regular checkups to keep it running in tip-top shape. Having regular annual preventative maintenance will bring your system longer life and fewer breakdowns over all.

The Seasonal Energy Efficiency Ratio (SEER) measures air conditioning and heat pump cooling efficiency, which is calculated by the cooling output for a typical cooling season divided by the total electric energy input during the same time frame. A higher SEER rating means greater energy efficiency.

At Coastal Air Plus, we provide all the services you need to keep your AC running in top-notch shape. Call us at 843.238.3838 for repairs, maintenance, or new-system installation.

Need HVAC Service?

Contact the experts at Coastal Air Plus.

Call us at 843.238.3838!

Air Conditioner Repair in Conway, SC 29526

“When our home air conditioner system stopped producing cold air, we had made three phone calls to different 24-hour services. Coastal Air was one that replied and had a technician called to make an appointment for that same evening. The technician arrived and checked out our system and determined that one of the capacitors needed to be replaced. The techs name was Andy, and he was efficient, knowledgeable, extremely pleasant and spent time with us going over the condition of our 13-year-old unit. At the completion of the service, he was not pushy but, when asked, he gave advice as to the various systems available that would be best as a replacement for the size of our house and our living conditions. As a business that has survived over 40 years with excellent reviews are a welcome entity for this area of South Carolina. We have nothing but praise for the technician and the owner of the business. We would highly recommend Coastal Air for its expediency and reliability.”
- Andy L.

Air Conditioner Repair in Garden City, SC 29576

“Quick service and fixed. Great team”

- Sharon M.

Air Conditioner Repair in Myrtle Beach, SC 29579

“Fast great friendly service”

- Linda C.

Air Conditioner Repair in Conway, SC 29544

“Karl was awesome. I called because I live in Pennsylvania and my smart thermostat said that my unit was no longer cooling my trailer. They arrived when promised and he fixed it very quick. Thank you!!!”

- Chris E.

Air Conditioner Repair in Garden City, SC 29576

“Excellent. Problem was diagnosed and repaired within 2 hours of our call. We are on the customer care plan.”

- Larry T.

Air Conditioner Repair in Conway, SC 29526

“Responsive. Great service/troubleshooted quickly very professional”

- Michelle R.

Air Conditioner Repair in Myrtle Beach, SC 29572

“Timely and professional”

- John W.

Air Conditioner Installation in Murrells Inlet, SC 29576

“Great company! We are so happy with their work.
Service expert Greg Byers is a super star. There is no problem that he can’t solve. He is also is a gentle and talented teacher. He helped me download apps and link them to my thermostat so I could manage my Myrtle property from Pittsburgh. He explains everything about my air and heat system in a way that I can understand and recommends things to help make my system better. Great company!
Great service! Awesome service technicians.”

- Anne B.

Air Conditioner Repair in Murrells Inlet, SC 29576

“The technician, Karl, arrived in a timely manner, asked for details of what was going on with my AC, explained everything he was going to do, took his time checking everything out, then he informed me of what he did to correct my AC issue. I highly recommend Coastal Air.”

- Laura B.

Air Conditioner Repair in North Myrtle Beach, SC 29582

“Carl is easy to talk to and knows the equipment.”

- Joseph S.

Coastal Air Plus proudly provides HVAC service to Myrtle Beach, SC  and the surrounding communities. Visit our service area page for more coverage details, call us at 843.238.3838, or request service online today.