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10 Best HVAC
in Charleston, SC

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Written By Bradford Cuthrell

Last Updated June 2024

On average, American homeowners devote 55% of their home energy usage to heating and cooling, according to the U.S. Department of Energy. You want to be comfortable in your Charleston home, but you also don't want to be wasting your money on ineffective cooling and heating.

A talented HVAC contractor can get your system into shape for a reasonable price, letting you keep your home comfortable while still saving money. That's why we've assembled this guide to the best HVAC companies in Charleston.

Top 10 Best HVAC Companies in Charleston

Olde Towne Heating & Air, LLC

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443 Long Point Rd Suite F, Mt Pleasant, SC 29464 (843) 856-1433 oldetowneheatingandair.com

Clear pricing policy

Reliable customer support

Informative resources

Services Offered

Furnace installation
Maintenance
Emergency services
Ductless
Filtration
Ac repair
Ac installation
Indoor air quality
Furnace repair
Boiler installation
Ventilation
Zoning systems

Max Mechanical Heating and Air

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1550 Orange Grove Rd, Charleston, SC 29407 (843) 480-1098 maxairsc.com

Clear pricing policy

Free quote

Informative resources

Reliable customer support

Services Offered

Indoor air quality
Inspection
Maintenance
Duct cleaning
Radiant heating
Ventilation
Emergency services
Ductless
Furnace installation
Ac installation

Terrace Heating & Air

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1828 Elsey Dr, Charleston, SC 29407 (843) 762-3639 terraceair.com

Clear pricing policy

Informative resources

Reliable customer support

Free quote

Services Offered

Maintenance
Ductless
Zoning systems
Filtration
Duct cleaning
Furnace installation
Indoor air quality
Inspection
Ac installation

Holy City Heating & Air, LLC

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238 E Bay St, Charleston, SC 29401 (843) 920-3944 holycityhvac.com

Reliable customer support

Free quote

Informative resources

Prompt service delivery

Clear pricing policy

Services Offered

Furnace installation
Filtration
Indoor air quality
Ac repair
Maintenance
Inspection
Ac installation
Ventilation
Ductless

Morelli Heating & Air Conditioning Inc.

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2470 Faber Rd, North Charleston, SC 29405 (843) 554-8600 morelliair.com

Reliable customer support

Clear pricing policy

Prompt service delivery

Informative resources

Services Offered

Emergency services
Furnace installation
Ventilation
Ac installation
Boiler installation
Inspection
Ductless
Indoor air quality
Maintenance

Pardee Service Experts

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1952 Belgrade Ave, Charleston, SC 29407 (843) 766-9001 serviceexperts.com

Free quote

Informative resources

Reliable customer support

Clear pricing policy

Services Offered

Ac installation
Emergency services
Filtration
Maintenance
Indoor air quality
Furnace installation
Ac repair
Ventilation
Inspection

Carney & Son 72 Degrees

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3528 Meek's Farm Rd, Johns Island, SC 29455 (843) 762-4304 carneyandson.com

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Prompt service delivery

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Furnace installation
Ductless
Ac installation
Ac repair
Indoor air quality
Maintenance
Duct cleaning

AC Heating and Air Conditioning Services

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1943 Belgrade Ave #1, Charleston, SC 29407 (843) 277-9928 achvac.com

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Clear pricing policy

Informative resources

Reliable customer support

Prompt service delivery

Services Offered

Ductless
Emergency services
Ac repair
Ac installation
Maintenance
Furnace installation
Indoor air quality

Passion Heating and Air

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3436 Maybank Hwy unit c, Johns Island, SC 29455 (843) 834-0607 passionhvac.com

Free quote

Prompt service delivery

Reliable customer support

Clear pricing policy

Services Offered

Ductless
Maintenance
Furnace installation
Indoor air quality
Ac installation
Ac repair
Filtration
Ventilation

Myatt Air Conditioning LLC

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1235 Camp Rd, Charleston, SC 29412 (843) 795-0229 myattac.com

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Prompt service delivery

Informative resources

Reliable customer support

Clear pricing policy

Services Offered

Ac installation
Indoor air quality
Emergency services
Furnace installation
Ventilation
Maintenance
Ductless
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

An HVAC system that's not working properly or outdated likely needs professional attention for maintenance or replacement. Watch for these indicators that your system needs service:

  • Thermostat malfunctions or temperature control issues
  • Cracking, corrosion, or rust
  • Uneven heating/cooling or poor air circulation
  • Higher than normal energy bills
  • Frequent breakdowns and need for repairs
  • Odd noises when turning on
  • Refrigerant leaks
  • An HVAC system that's over 15 years old

These HVAC red flags indicate that you should have your system evaluated. A local technician can complete an inspection, diagnose problems, and recommend repairing or replacing your HVAC unit.

Cost of HVAC Installation and Maintenance in Charleston

The price of HVAC installation or maintenance will vary depending on the type of unit you have. Common types of HVAC units include the following:

  • Split or mini-split: Homes without ductwork for central air frequently have split or mini-split HVAC systems. These systems consist of interior units in each room to control temperature, which all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions very similarly to a standard split system. It has the benefit of having the capability to use either gas or electricity for power.
  • Heat pump: Heat pumps move hot and cold air between your house and outside. They don't make their own heating and cooling, so they work more efficiently in more mild climates and may not be as effective during Charleston's hot summers.
  • Packaged heating and air: Packaged HVAC systems work best in smaller houses. They consist of a single combined heating and air conditioning unit, typically located in a basement or attic. This unit is typically small, cost-effective, and straightforward to maintain.

HVAC maintenance prices differ depending on the particular service needed. HVAC systems are complicated and might require different maintenance services. Prices for some common services are as follows:

HVAC Unit TypeCost
Split$1,920-$4,894
Hybrid Split$3,890-$7,167
Heat Pump$3,012-$30,694
Packaged Heating and Air$252-$420

Ways to Save Money on HVAC Costs

HVAC system repairs and replacements are important, but can be pricey. Luckily, there are steps homeowners can take to reduce wear and tear on their system and lower future maintenance needs.

  • Monitor for potential problems. Keep an eye on your system for issues, for example by consistently checking your thermostat and energy bills. This enables you to address issues before they get too expensive.
  • Change filters regularly. Switching out or cleaning your air filters every 30–90 days helps air flow smoothly through your HVAC system. You should also try to prevent dirt and debris from building up around the outside areas of your system.
  • Change the position of your blinds seasonally. Closing your blinds in the summer blocks some passive solar heat from getting indoors. Opening the blinds in the winter allows this same heat to help warm your home. Both of these measures help decrease the work required from your home’s HVAC system.
  • Keep your system clean. Keeping your grills, indoor evaporator coil, condenser fan blades, and ductwork clean helps your system run and reduces the chance of mold growth. The National Air Duct Cleaners Association recommends cleaning your HVAC system when it starts to look dirty.
ServiceCost
Filter Replacement$63-$168
Condensor Cleaning$1,260-$3,781
Thermostat Repair$84-$210
Ductwork Cleaning$403-$1,008

How To Choose a Local HVAC Company

Knowing the right things to look for in an HVAC company is key for a smooth repair or installation. Established providers with certified technicians can offer assurance your HVAC system will deliver consistent heating and cooling year-round.

Compare Multiple Bids

Request estimates from at least three HVAC contractors. Describe your issues and ask if technicians can inspect your system in person. Compare each company's diagnoses, recommended solutions, estimated cost, timelines, and warranties. Avoid contractors that pressure you or demand payment before work.

Check Credentials

Look for an HVAC company that employs skilled technicians with the necessary training and licenses. HVAC contractors in all states need to obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for all contractors who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." An individual must pass an exam (the type of exam depends on the type of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.

HVAC contractors in South Carolina must be licensed as mechanical contractors via the South Carolina Department of Labor, Licensing and Regulation Contractor's Licensing Board. This license can have multiple specialities, such as Electrical, Heating, Air Conditioning, Plumbing, or Refrigeration, depending on what's needed for a specific project. Contractors must have one year of work experience and pass an exam to obtain a license. Your city or county may have additional requirements. Also check a company's reviews and complaints on sites such as Yelp, the Better Business Bureau (BBB), and Google Reviews. Pick a company with great feedback and stories of satisfied customers.

Understand Work Details

Make sure you understand the details of your project before it begins. If HVAC repairs are required, have your provider specify which parts need replacement and why. Get confirmation that your technician will clean and test your system after the repair to ensure that everything works. When replacing your HVAC system, ask the contractor to describe the new estimated installation time, brand, energy efficiency, features, and model. Before signing a contract, ask how your provider plans to accurately size the unit for your home and how much it will cost.

Compare Warranties

Trustworthy HVAC companies provide warranties for their services. The broader the coverage, the better, so make sure to compare warranties between companies. Choose the one that provides the most comprehensive coverage at a fair cost.

Get Quote in Writing

Always get HVAC estimates in writing before work begins. A detailed quote will cover costs for both labor and materials. Confirm that you understand all terms before signing the contract.

Frequently Asked Questions About HVAC in Charleston, SC

You should have your HVAC system inspected about twice annually. After completing their inspection, your technician will inform you what services are needed. You should also schedule an inspection if you notice new issues such as unusual smells, strange noises, or leaks. If your home has ductwork, you should have it inspected every few years.

Usually, it's smart to have your HVAC system inspected in the spring and fall, as these times tend to be less busy. This also helps make sure your system is prepared for the summer and winter, when it probably sees the most use.

You can save energy during the summer by making it easier for your HVAC system to keep your home cool. Set your thermostat as close to the outside temperature as is comfortable, and try to avoid making drastic changes in temperature all at once. Keep your roof in good shape and seal any leaks around your windows and doors to avoid letting cool air escape. Similarly, make sure your attic is well ventilated to avoid trapping excess heat in your home.

It takes around one to three days to have your HVAC system installed or replaced. If you only need a furnace or a single air conditioning unit, this might take between half a day and two days. This timeline will be influenced by the size of your house, how easily accessible your system is, and any issues your technician discovers.

For a 2,000-square-foot home, look for a furnace that's between 50,000 and 80,000 BTUs (British thermal units). In Charleston, you may be able to make do with a furnace on the lower end of this range.

For a 2,000-square-foot home, you'll also want an air conditioning unit with between 2.5 and 5 tons of capacity. In Charleston, you'll likely need a unit on the higher end of this range. Generally, if your home is over 1,000 square feet, central air will be more effective than window air conditioning units.

Typically, HVAC financing is offered through a third-party lender. If your HVAC company doesn't have financing options, you might consider taking out a loan on your own. Be sure to talk to your HVAC company and a financial advisor to find out what options are available and appropriate for your situation.

There are a number of ways you can make your HVAC system more energy-efficient:

  • Keep your air ducts clean and change or clean your air filters on a regular basis.
  • Schedule regular inspections to take care of issues as they come up.
  • Keep your attic well-ventilated and make sure all doors and windows are well-sealed.
  • Install a smart thermostat. If you aren't able to purchase one, try to keep the temperature indoors as close to the outside temperature as you can.
  • When it comes time to replace any part of your system, see if there are Energy Star-certified or other environmentally friendly options.

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