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Water Heater Replacement & Installation in Charleston, SC

Providing “Comfort for Life” since 1972

Family-Owned

& Operated Since 1972

Third-Generation

Charleston Company

Trane

Comfort Specialist

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How to Know When It's Time for a New Water Heater

Most homeowners don’t replace their water heater until it fails completely, but waiting for a full breakdown often means dealing with an emergency rather than making a planned, informed decision. Knowing the signs that a water heater is nearing the end of its useful life gives you the chance to replace it on your own terms, before you’re left without hot water or cleaning up water damage.

Here are some signs it may be time to consider a new water heater

  • Your unit is 10 years old or more, which is around the point where reliability starts to decline and the likelihood of a significant failure increases
  • You’re running out of hot water more frequently or the water isn’t getting as hot as it used to, even when household demand hasn’t changed
  • You’ve had multiple repairs over the past few years and the costs are starting to add up in a way that’s hard to justify against the age of the equipment
  • There’s visible rust or corrosion on the tank itself, the connections, or in the water coming out of your hot taps, which often indicates the inside of the tank is deteriorating
  • You’re hearing persistent rumbling, popping, or banging from the unit that hasn’t improved after a tank flush, which can point to significant sediment buildup or a failing heating element
  • There’s water pooling around the base of the unit, which can indicate a crack or failure in the tank that isn’t repairable
  • Your energy bills have been creeping up and the water heater is one of the likely culprits, since an aging unit loses efficiency as components wear and sediment builds up over time
If you’re not sure whether repair or replacement is the right call, our licensed plumbers will give you an honest assessment rather than a recommendation shaped by what’s easiest to sell.

Our Services

What Your Neighbors Are Saying About Us

Molly S.
Could not be happier with my experience with Smoak's. Rob went above and beyond to repair my HVAC system quickly and at a great price. He's trustworthy, reliable, and explained everything along the way. I *highly* recommend.
Jeff S.
Smoaks was great! Professional, on time and thorough. The noise we questioned was absent at visit but they assured us if it comes back take a video so they can hear it. They checked several possibilities and gave tips.Since we are under warranty call back with any problems at any time. Joey was really great and Cole made a great partner. Good job guys , thank you!
Jeffrey D.
Zach from Smoak’s Comfort Control conducted the semi-annual maintenance on all of our systems. We appreciate the fact that he took his time to do the work, and did not rush the process. Zach was very diligent and detail-oriented. He is an extremely nice and courteous person who respected our house when doing his work. Very happy with him and Smoak’s!
Tiffany B.
Annual inspection. Tech identified a potential issue and scope of work. Costs provided in quote. SMOAK’s (as usual) does exceptional work. Always honest, dependable, productive and professional technicians. Well done SMOAK’s! Zach was a great tech! Keep up the good work.
R.H.
Al our technician was fantastic. He was extremely knowledgeable, efficient, and honest. We truly had a great experience with Smoaks installing our new hot water heater.
Maeve M.
We used Smoak’s to upgrade the plumbing in the entire house. From the drywall cuts to the valve work everything way excellent, tidy, and efficient! John was attentive and beyond knowledgeable, helping us to fully understand our system. His work reflected attention to detail and mastery of his trade.
Christopher M.
Replacement Package unit installed yesterday (2025-02-11). Josh Roper did a great job on my quote, his knowledge and communication made it easy to go with Smoak's. Quentin did a fantastic job with the install. He is knowledgeable and professional! Highly recommended!
Steve B.
Al Ahner with Smoak’s was a welcome professional to our home. He not only addressed my plumbing needs during his visit, he provided a recommendation related to my gas lantern settings that I greatly appreciate. Al took the time to listen to my needs and provide really sound advice to me.
James V.
Javon Jones performed our prevented maint check from Smoaks Heating and AC. Javon was on time, professional, and did his checks in a deliberate fashion. He ended is maint check by reviewing his findings and recommendations with me. He is exactly what you want as Technician! I will request him again next visit.
Georges K.
Smoak’s Comfort Control did an amazing job with our AC install. They were super responsive and easy to work with, and the communication was great every step of the way. The team was organized, took care of everything, and the quality of their work really shows. We’re extremely happy with the whole experience and wouldn’t hesitate to recommend them to anyone.

What a New Water Heater Installation Can Do for Your Home

Replacing an aging water heater isn’t just about avoiding a breakdown. A new unit installed by a licensed plumber can make a noticeable difference in your daily comfort and your monthly energy costs, especially if your current equipment is several years old and hasn’t kept pace with improvements in water heater technology.

Here’s what homeowners in Charleston typically experience after a new water heater installation

  • More consistent hot water availability without the frustrating drop-off that comes when an older unit struggles to keep up with household demand
  • Lower energy bills because modern water heaters, especially high-efficiency and tankless models, use significantly less energy than older equipment to deliver the same amount of hot water
  • Better water quality from a new tank with a fresh anode rod and clean interior surfaces, free of the corrosion and sediment that builds up in aging units over time
  • Reduced maintenance concerns in the near term since a new, properly installed unit starts with a clean slate and a full manufacturer warranty
  • More options for how your home’s hot water is delivered, including tankless systems that heat water on demand and take up considerably less space than a traditional tank
  • Peace of mind knowing the unit is up to code, properly installed, and backed by a warranty that protects your investment
For many Charleston homeowners, a new water heater ends up being one of the more straightforward home improvements in terms of the daily quality-of-life difference it makes.

Water Heater Options We Install

There’s no single water heater that’s right for every home, and part of what we do at Smoak’s is help homeowners understand their options so they can make a decision that fits their household’s needs, their space, and their budget. Here’s a look at the water heater types we install

  • Traditional tank water heaters, which store and maintain a set volume of hot water and are a reliable, cost-effective option for most households, available in a range of sizes to match your home’s demand
  • Tankless water heaters, which heat water on demand rather than storing it, deliver a continuous supply of hot water, and take up significantly less space than a tank unit, making them a popular choice for homeowners looking to improve efficiency or free up storage space
  • Gas water heaters, which are a strong option for homes with natural gas service and typically offer faster recovery times than electric models
  • Electric water heaters, which are widely used throughout the Charleston area and offer a straightforward, reliable option without the need for a gas connection
  • High-efficiency water heaters that meet current energy standards and deliver lower operating costs over the life of the unit
When you’re not sure which type is the best fit for your home, our team will walk you through the differences honestly and help you make a decision that makes sense for your situation.

How Our Water Heater Installation & Replacement Process Works

A water heater installation done right involves more than just connecting a new unit where the old one sat. Proper sizing, safe installation, and correct connections all have a direct impact on how reliably the system performs and how long it lasts. At Smoak’s Comfort Control, our licensed plumbers handle every step of the process with care.

Here’s what the installation and replacement process looks like

  • We start by assessing your home’s hot water demand, the available space for the unit, and your fuel source to make sure we’re recommending a water heater that’s genuinely right for your household
  • We walk you through your equipment options in plain language, explain the differences between tank and tankless systems, gas and electric models, and efficiency levels, and give you an honest recommendation
  • On installation day, we safely disconnect and remove your old unit and dispose of it properly
  • We install the new water heater according to manufacturer specifications and local code requirements, making sure all connections, pressure relief valves, and venting components are correctly installed and secure
  • We test the unit to confirm it’s heating water correctly, check for any leaks at the connections, and verify that all safety components are functioning as they should
  • Before we leave, we walk you through the new unit, cover anything worth knowing about settings or maintenance, and make sure you feel comfortable with how everything works
We treat every installation the same way, whether it’s a straightforward tank replacement or a more involved tankless conversion.

Why Charleston Homeowners Choose Smoak's for Water Heater Installation

Smoak’s Comfort Control has been serving Charleston homeowners since 1972. We’re a third-generation, family-owned and operated company built by lifelong Charleston residents, and our plumbing services carry the same commitment to honest, quality work that has defined this company for more than 50 years. When you call Smoak’s for a water heater installation or replacement, you’re getting a licensed plumber from a locally rooted team that takes the job seriously.

Here’s what sets us apart

  • Licensed plumbers with the training and experience to install water heaters correctly and safely the first time
  • Honest equipment recommendations based on your home’s actual needs, not on what’s easiest or most profitable to install
  • Familiarity with local water conditions in Charleston and how they affect water heater performance and longevity over time
  • An A+ rating with the Better Business Bureau earned through more than 50 years of quality work and straightforward service
  • Transparent pricing with no surprises and no pressure to upgrade beyond what your home actually needs
  • Financing options to help manage the cost of a new water heater when the timing isn’t ideal
  • A family-owned approach that treats every customer and every home with the kind of care and respect that only comes from a company that genuinely values its community
Comfort for life means making sure every part of your home is working the way it should. For Charleston homeowners, that includes having a reliable source of hot water, and Smoak’s has been helping make that happen for over 50 years.

Frequently Asked Questions

How long does a water heater installation take?
Most standard tank water heater replacements can be completed in a few hours. Tankless installations or jobs that require modifications to existing plumbing or venting may take longer. We’ll give you a clear timeline before work begins so you know what to expect.
The right size depends on how many people are in your household and your peak hot water demand. A unit that’s too small will struggle to keep up, while an oversized unit costs more to operate than necessary. Our team will assess your home’s needs and recommend the right capacity before any equipment is purchased.
For many homeowners, yes. Tankless water heaters are more energy efficient than traditional tank models, deliver hot water on demand without running out, and take up much less space. The upfront cost is higher, but the long-term energy savings and extended lifespan often make them a sound investment. Our team can help you weigh the options for your specific situation.
The mineral content in Charleston’s water supply contributes to sediment buildup inside traditional tank water heaters over time. This reduces efficiency, puts extra strain on heating components, and can shorten the life of the equipment if it isn’t addressed through regular maintenance. Tankless water heaters can also be affected by mineral buildup and benefit from periodic descaling.
Yes, our licensed plumbers are experienced with both gas and electric water heater installations. Whether you’re replacing like for like or considering switching fuel types or moving to a tankless system, we can handle the installation and make sure everything is connected correctly and up to code.