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The 10 Best Water Heater Installation Companies in Charleston (2026)
We ranked the top water heater installation companies in Charleston using a Google-review–based approach and updated the list for 2026. The ordering reflects both average ratings and review volume so firms with consistently high feedback rise to the top. Charleston homeowners face coastal humidity and a range of housing ages, so dependable hot water service is a common local need. This guide focuses on verifiable Google ratings and review counts to help you narrow your options before requesting quotes and assessing warranties, permits, and the specific system type that fits your home.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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1st Choice A/C, Heating, Plumbing, & Gas
1st Choice A/C, Heating, Plumbing, & Gas tops our list because it combines a perfect 5.0 Google rating with a substantial review base of 783, which gives it strong weight in our ranking. The company’s name also indicates a full-service scope that includes A/C, heating, plumbing, and gas, consistent with the Plumber category on Google. Those two factors — flawless average score and high review volume — are why it comes out on top in Charleston.
The full ranking
Rooter Man Plumbing
Has a 5.0 rating based on 601 Google reviews and appears in the Plumber category; the listed address is in Charleston, SC.
601 reviews
Avery’s Plumbing, Tankless, & Water Filtration
Shows a 5.0 Google rating with 333 reviews in the Plumber category; the address places the business in Mt Pleasant, SC.
333 reviews
Blue Collars
Maintains a 5.0 rating from 230 Google reviews and is categorized as a Plumber; the business is listed on Rich Street in Charleston, SC.
230 reviews
Plumb Easy
Recorded a 5.0 Google rating across 145 reviews under the Plumber category, with an address on Wappoo Road in Charleston, SC.
145 reviews
Flaig Plumbing
Lists a 5.0 Google rating from 102 reviews and is categorized as a Plumber; no address is shown in the provided data.
102 reviews
Water Heater Doctors
Carries a 5.0 Google rating with 42 reviews and appears in the Plumber category; the listing does not include an address in our dataset.
42 reviews
Grace Plumbing and Water Filtration LLC
Has a 5.0 rating based on 38 Google reviews under the Plumber category, and the address places it in Mt Pleasant, SC.
38 reviews
Servant Plumbing of Charleston
Displays a 5.0 Google rating from 15 reviews in the Plumber category, with a Charleston, SC address shown.
15 reviews
LimRic Plumbing, Electrical, Heating & Air
Holds a 4.9 Google rating with a very large review count of 7,156 and is listed as a Plumber; the address indicates North Charleston, SC.
7156 reviews
Frequently asked questions
How do I choose the right water heater installer?
Look for licensed and insured contractors, check recent customer reviews, and confirm experience with the specific type of system you want (tank or tankless). Ask for written estimates, clear timelines, and details about warranties so you can compare apples-to-apples proposals.
What does water heater installation typically cost?
Costs vary widely depending on whether you choose a traditional tank or a tankless unit, the unit’s capacity, installation complexity, and permit requirements. Get multiple written estimates and factor in removal of the old unit, any needed plumbing or gas work, and warranty coverage when comparing prices.
What should I check before hiring an installer?
Verify the contractor’s license and insurance, request references or recent review excerpts, and confirm they will obtain any required permits. Also ask about the installation timeline, parts and labor warranties, and whether a post-installation inspection or service visit is included.
How was this ranking created?
This list is built from Google review data and updated for 2026, using an average-rating method weighted by review volume (a Bayesian-style approach) so businesses with high scores and many reviews rank higher. All entries are categorized under Google’s Plumber classification and sorted by that weighted score.