Experienced Technicians
Experienced Technicians | HVAC Unit Replacement | Heating and Air Conditioning | Charleston
When Charleston’s humid summers or brisk sea-breezed winters push your old system to the brink, HEP’s seasoned technicians step in with fast, precise HVAC unit replacement that restores comfort without the guesswork. We evaluate your home’s unique layout, recommend high-efficiency equipment tailored to coastal conditions, and handle every detail—from clean removal of the outdated unit to expert installation, load balancing, and thermostat calibration—so you can relax in consistent, energy-smart comfort year-round.
Customers across the Lowcountry choose HEP because our factory-trained pros show up on time, communicate clearly, and back their craftsmanship with iron-clad warranties. Whether you’re upgrading to cut utility costs or a sudden breakdown has left you sweltering, we deliver transparent pricing, flexible financing, and same-day service options that keep your household running smoothly—long after the job is done.
FAQs
How do I know it’s time to replace my HVAC unit rather than repair it?
In Charleston’s hot, humid climate, an HVAC system works harder and typically lasts 10–15 years. If your unit is approaching that age, needs frequent repairs, struggles to maintain temperature or humidity, or causes energy bills to spike, replacement is often more cost-effective. Our technicians will perform a detailed load calculation, inspect critical components, and provide a cost-benefit comparison so you can make an informed decision.
What size HVAC system do I need for my Charleston home?
Proper sizing is crucial; an oversized system short-cycles and wastes energy, while an undersized one runs constantly and never reaches set temperatures. We calculate the ideal capacity using Manual J load calculations that factor in Charleston’s coastal humidity, your home’s square footage, insulation, window orientation, and occupancy. This ensures maximum comfort, efficiency, and equipment longevity.
How long does a typical HVAC replacement take?
Most standard replacements can be completed in a single day. A straight swap of an indoor air handler and outdoor condenser typically takes 6–8 hours. Projects that require new ductwork, zoning, or indoor air quality add-ons may extend to two days. We schedule convenient times, obtain any required Charleston or Charleston County permits ahead of time, and leave your home clean when we’re finished.
What is the average cost of HVAC replacement in the Charleston area?
Pricing varies by capacity, efficiency rating (SEER2), brand, and whether duct modifications are needed, but most complete systems range between $7,000 and $12,000 installed. High-efficiency heat pumps or dual-fuel systems can be higher but may qualify for federal tax credits, utility rebates, and energy-efficient financing programs we’ll help you secure.
Will a new HVAC system lower my energy bills?
Yes. Replacing a 10-SEER unit from the early 2000s with today’s 16–20 SEER2 equipment can cut cooling costs by up to 40 %. New variable-speed compressors, ECM blower motors, and smart thermostats adapt to Charleston’s fluctuating humidity and temperature, maintaining comfort while using less electricity. We’ll estimate annual savings during your consultation.
What warranties and maintenance plans are available?
Most manufacturers offer 10-year parts warranties when the system is registered, and we include a 1- to 2-year labor warranty on our workmanship. For added peace of mind, we provide affordable maintenance agreements that include two seasonal tune-ups, priority scheduling, and discounts on future repairs. Routine maintenance keeps your new HVAC unit efficient and protects the factory warranty.