Home of the $100 OFF AC REPAIR SUMMER SPECIAL  | 0% Interest for 24 Months

Home of the $79 SPRING TUNEUP | 0% Interest for 24 Months

Home of the $79 SPRING TUNEUP | 0% Interest for 24 Months

Charleston Peninsula · Historic Homes

Historic-Home AC and Mini-Split Retrofit on the Charleston Peninsula

A downtown single house cannot be cooled the way a suburban ranch is. There is no duct chase to work with, the structure is irreplaceable heart pine, and the Board of Architectural Review has a say in what shows from the street. We retrofit peninsula homes the right way, without gutting the house that makes them worth owning.

Call (843) 708-8735
Information gain · the single house

The Charleston single house was never built for ducts

The classic Charleston single house is one room wide, turned gable-end to the street with its full-length piazzas running down the long side, and it is framed in heart-pine post-and-beam with plaster walls. Beautiful, and a genuine problem for central air: there is no chase to run ductwork up through the floors, and no one with any sense is cutting into heart pine or tearing out original plaster to make room for it.

So forcing conventional ducts into a single house is the wrong instinct. The right retrofit keeps the structure intact and puts the conditioning where it needs to go without the demolition.

South of Broad Harleston Village Ansonborough Cannonborough-Elliotborough Wagener Terrace
Ductless

Mini-split systems

Wall, ceiling, or low-profile units tied to a compact outdoor condenser, no ductwork required. They zone the house room by room, run quietly, and dehumidify well, which is exactly what a piazza-shaded single house with tall ceilings needs. Ideal when you want to condition the rooms you live in without touching the structure.

Small-duct high-velocity

High-velocity systems

Flexible two-inch tubing threads through existing wall and ceiling cavities and feeds small, round outlets you barely notice. You get the even, whole-home feel of central air and keep the historic interior, with none of the soffits, chases, and plaster demolition a conventional duct retrofit would demand.

Information gain · the structure

Heart pine and plaster are the whole reason

You protect the house, not fight it

A single house is held up by heart-pine post-and-beam framing that is well over a century old and effectively irreplaceable, wrapped in lath-and-plaster walls and ceilings. Cutting duct runs through that structure is not just expensive, it permanently damages what gives the home its value and, downtown, its protected status.

Ductless and high-velocity systems were made for exactly this. They route through small existing cavities and discreet penetrations, so the heart pine stays load-bearing, the plaster stays intact, and the piazza keeps doing the shading work it was designed for. The comfort is modern; the house is untouched.

Information gain · the BAR

The Board of Architectural Review decides what shows from the street

In Charleston's Old and Historic District, the Board of Architectural Review must approve an exterior condenser that is visible from the public right-of-way. An outdoor unit or a mini-split compressor placed where it can be seen from the street is a reviewable exterior change, and putting one in without sign-off can get you ordered to move or screen it after the fact.

We plan for that from the start. Equipment goes in rear yards, tucked behind the piazza, or screened out of the protected sightlines, and when a placement needs BAR approval we site and document it to clear review. You get the cooling without a fight over the front elevation.

Service area

We work the whole peninsula

29401
29403the peninsula ZIP codes we cover

From South of Broad to the upper peninsula

We service historic homes across the Charleston peninsula. 29401 covers the lower peninsula and the historic core, from South of Broad through the French Quarter, Harleston Village, and Ansonborough. 29403 covers the upper peninsula, including Cannonborough-Elliotborough, Wagener Terrace, and Hampton Park Terrace. Single houses, Charleston doubles, and freedman's cottages alike.

Common questions

Historic-home AC FAQ

My Charleston single house has no place for ducts. What are my options? +
Two that do not require tearing into the house. A ductless mini-split uses wall, ceiling, or low-profile units tied to a compact outdoor condenser and zones the home room by room. A small-duct high-velocity system runs flexible two-inch tubing through existing cavities to small, discreet outlets for a whole-home, central-air feel. Both work without a duct chase, which a single house does not have, so the heart pine and plaster stay intact.
Do I need approval to put an AC condenser on a historic Charleston home? +
If the unit is visible from the public right-of-way in the Old and Historic District, yes. The Board of Architectural Review has to approve an exterior condenser that shows from the street, and installing one without sign-off can get you ordered to move or screen it. We plan placement and screening up front, in rear yards or behind the piazza, and document for BAR approval when a spot requires it.
Why not just add regular ductwork to my downtown home? +
Because the Charleston single house has no chase to run it through, and the only way to add full-size ducts is to cut into heart-pine post-and-beam framing and original plaster. That damages irreplaceable, protected structure and costs a fortune in restoration. Ductless and high-velocity systems route through small existing cavities instead, so you get modern cooling without sacrificing the house.
Will a mini-split or high-velocity system look out of place in a historic interior? +
Not the way we place them. High-velocity outlets are small round vents you barely notice, and mini-split heads come in low-profile and ceiling-cassette styles that sit discreetly in the rooms you use. Outdoors, we keep the condenser out of the protected sightlines so it satisfies the Board of Architectural Review and keeps the streetscape intact.
What part of Charleston do you cover for historic homes? +
The whole peninsula, ZIP codes 29401 and 29403. That runs from South of Broad and the French Quarter through Harleston Village and Ansonborough on the lower peninsula, up to Cannonborough-Elliotborough, Wagener Terrace, and Hampton Park Terrace on the upper peninsula. Single houses, doubles, and freedman's cottages are all in our wheelhouse.

Cool the house without losing what makes it historic.

Coastal Carolina Comfort retrofits Charleston single houses and downtown historic homes with ductless and high-velocity systems, placed to satisfy the Board of Architectural Review and to leave the heart pine and plaster alone. Same-day service across the peninsula.

Call (843) 708-8735

SCHEDULE A SERVICE CALL or Get A Free Quote On A New Unit.


GET A FREE ESTIMATE and schedule service


GET A FREE ESTIMATE and schedule service