Endless hot water from a unit the size of a suitcase.
Air & Water
A tank water heater keeps forty-plus gallons hot around the clock whether you need it or not — then runs out mid-shower anyway. A tankless unit heats water the moment you call for it and never runs out. Alexander Heating & Cooling installs Rinnai tankless water heaters across the Charleston area.
Back-to-back showers, a full tub, and a running dishwasher — a properly sized tankless unit keeps up with all of it.
The unit mounts on a wall. The closet or garage corner the old tank ate is yours again.
The most common water heater disaster is a corroded tank letting go. Tankless units simply do not have one.
Open 7 Days
Call (843) 608-1689 any day of the week — or send the form and we will get right back to you. Honest pricing, clear answers, and a crew your neighbors already rated 5.0 stars.
How It Works
Give us a call at (843) 608-1689 or fill out the form. We will ask a few questions about what is going on.
Our technician finds the real problem and gives you clear pricing before any work starts.
We finish the job, clean up after ourselves, and test everything before we leave. Done means done.
Turn on a hot tap, and the unit fires instantly, heating water as it flows through. Turn it off, and the unit stops — no tank of hot water sitting around losing heat all day. For Lowcountry homes where garage and closet space is precious, and for raised beach houses where a leaking tank means real damage below, the wall-mounted design earns its keep twice over.
A tankless unit only delivers on its promise when it is sized for your household and plumbed and vented correctly — gas supply, venting, and water flow all have to line up. We handle the full installation: sizing for how your family actually uses hot water, mounting, connections, and a walkthrough of the controls before we leave.
Our Services
Whatever your system needs, Alexander handles it end to end — anywhere we serve:
Call (843) 608-1689 or book online — open 7 days a week across Charleston and the Lowcountry.
FAQ
Service Areas
Proudly serving Charleston and the Lowcountry, from Daniel Island to the beaches and out to Huger.
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