Indoor Comfort
Indoor Comfort | HVAC Unit Replacement | Heating and Air Conditioning | Charleston
When Charleston’s salty air and steamy summers push your aging system to its limits, HEP’s Indoor Comfort Heating and Air Conditioning brings swift, stress-free HVAC unit replacement right to your door. Our certified technicians size and install high-efficiency equipment that tames Lowcountry humidity, lowers monthly energy bills, and wraps your home in year-round comfort—all while respecting your time, budget, and property. From the first free estimate to the final quality check, you’ll feel the HEP difference in our clear communication, upfront pricing, and obsessive attention to detail.
Whether your furnace has fizzled, your heat pump huffs and puffs, or your AC simply can’t keep up, we match you with trusted brands backed by iron-clad warranties and our own 100% Satisfaction Guarantee. Schedule today and discover why neighbors across Charleston rely on HEP to replace the headaches of an old system with the calm, cool confidence of a brand-new one.
FAQs
How do I know it’s time to replace my HVAC unit instead of repairing it?
Most Charleston homeowners start considering replacement when their heat pump or air-conditioning system is 10–15 years old, needs frequent repairs, or struggles to keep up with our hot, humid summers. A good rule of thumb: if a major repair will cost more than about 40% of the price of a new, high-efficiency system—and your current unit is out of warranty—it’s usually smarter to invest in replacement. You’ll gain lower energy bills, stronger dehumidification, and a new 10-year parts warranty.
What size HVAC system do I need for my Lowcountry home?
Proper sizing is critical in Charleston’s climate, where an oversized unit will short-cycle and leave excess humidity while an undersized one will run constantly. We calculate the exact tonnage you need with a load calculation (Manual J) that factors in square footage, insulation levels, window types, sun exposure, number of occupants, and even coastal wind infiltration. Never rely solely on the size of your old unit or on square-footage rules of thumb.
Which efficiency rating should I choose—SEER2 14.3, 16, or higher?
Starting in 2023, the minimum efficiency for the Southeast is 14.3 SEER2 (roughly 15 SEER on the old scale). In Charleston, upgrading to 16–18 SEER2 can cut cooling costs by 25–35% and improve humidity control. Because we have a long cooling season and relatively mild winters, higher SEER2 and HSPF2 ratings deliver a faster payback here than in colder climates. We’ll provide savings projections so you can decide if the extra upfront cost makes sense.
How long does a full HVAC replacement take?
Most standard split-system replacements are completed in one working day. If we’re upgrading ductwork, adding indoor air quality accessories, or installing a communicating thermostat, plan on one-and-a-half to two days. We pull necessary Charleston County or City of Charleston permits in advance and schedule the final inspection so you have full code compliance and warranty protection.
Are financing or rebates available for new HVAC systems in Charleston?
Yes. We partner with several lenders to offer 0% APR promotional financing for 12–18 months or low-interest plans up to 120 months. Dominion Energy also offers rebates—currently $300–$700—for qualifying high-efficiency heat pumps. Federal tax credits of up to $2,000 are available through 2032 for ENERGY STAR certified heat pumps under the Inflation Reduction Act. We handle all rebate paperwork for you.
What kind of maintenance does my new system need to stay under warranty?
Manufacturers like Trane, Carrier, and Lennox require documented professional maintenance at least once a year for heat pumps and twice a year for dual fuel or gas furnace systems. Our Comfort Club includes spring and fall tune-ups, priority service, and filter reminders. Routine maintenance keeps your new system efficient, extends its lifespan, and preserves the 10-year parts and compressor warranty.