AC & Heating Services in Downtown Charleston (Charleston), SC

All Star Heating & Air installs and services HVAC in Downtown Charleston and South of Broad, where 18th- and 19th-century single houses demand a different playbook: ductless and compact-duct retrofits that spare historic plaster, condenser placement that respects Board of Architectural Review sightlines, and elevated equipment platforms in the peninsula's flood zones. Family-owned, licensed (SC Lic #580), and serving the Lowcountry since 1993.

How do you air-condition a 200-year-old Charleston single house?

South of Broad, Rainbow Row, and the blocks around The Battery hold some of America's oldest housing stock: narrow, deep Charleston single houses with multi-story piazzas, solid masonry walls, and lath-and-plaster interiors that were engineered to catch harbor breezes - not to hide supply trunks. There is usually no honest place to run full-size ductwork, which is why our downtown retrofits lean on ductless mini-splits and compact high-velocity systems that thread through closets and floor cavities instead of demolishing plaster.

Placement is as much of the job as equipment. Visible mechanical equipment is not allowed from the public right-of-way in the historic district, so condensers go to rear elevations and side yards with appropriate screening - and in the peninsula's flood zones, the City's flood ordinance pushes new equipment up onto elevated platforms above the design flood elevation. Add harbor salt air working on every outdoor coil, and downtown HVAC rewards contractors who plan before they cut.

No room for ducts, no appetite for demolition

Ductless mini-splits condition a single house room by room through a small penetration per head. Where central air is a must, compact-duct high-velocity systems ride existing chases. Historic plaster stays intact either way.

BAR sightlines and screening

Equipment visible from the street is a non-starter in the historic district. We position condensers on rear and secondary elevations, use screening that fits the house, and keep changeouts within the existing approved footprint whenever possible.

Flood-zone platforms and salt air

New mechanicals in the peninsula's flood zones must sit above the design flood elevation on sound platforms, and harbor air corrodes standard coils early. Coastal-coated equipment on properly elevated stands is the downtown default.

What HVAC rebates can Dominion Energy customers here claim?

Peninsula homes are Dominion Energy South Carolina electric customers. Dominion's residential program pays $400 to $500 toward ENERGY STAR qualified central AC and heat pump replacements ($400 at 15.2 SEER2, $500 at 16.0 SEER2), $650 when an electric furnace is replaced with an ENERGY STAR heat pump, and up to $300 for qualifying ductwork improvements.

Replacements must be like-for-like (no fuel switching), installed by a licensed mechanical contractor, with the application filed within 90 days - and note that many classic downtown retrofit solutions, like ductless mini-splits and ground-source systems, fall outside this specific program's eligibility, so we'll tell you honestly what your project qualifies for. SC's federal HEAR/HOMES rebates haven't launched yet (expected 2026 per the SC Energy Office), and the federal 25C credit expired December 31, 2025.

Verified July 2026: DominionEnergy.com Heating & Cooling Rebates (South Carolina).

HVAC services Downtown Charleston homes ask for most

• Ductless mini-split installation in Charleston
• AC repair in Charleston
• Heating repair in Charleston
• Water heater installation in Charleston

Good to know: Salt-air corrosion & coastal HVAC, When ductless is the right answer, Financing options.

Nearby areas we serve: West Ashley, Old Village, Riverland Terrace, or view all service areas.