Tankless Water Heater Installation in Mount Pleasant, SC
Experience continuous hot water with a new tankless water heater installed by KBN Plumbing in Mount Pleasant, SC.
- Same-Day Estimates Offered
- Descaling Valves Installed
- Prompt, Reliable Installation
- Modern Hot Water Solutions
Get Your New Tankless Water Heater in Mount Pleasant, SC.
Call today for a flat-rate tankless installation quote that includes gas, venting and water connections.
Expert Tankless Water Heater Installation in Mount Pleasant, SC
KBN Plumbing knows that hard water is the biggest threat to tankless units, since scale builds up inside the heat exchanger. Most municipal water in South Carolina comes from rivers and reservoirs, so it tends to run soft and leaves less scale than in many other states. We install service valves for easy flushing and recommend a scale inhibitor or softener to protect your warranty. You get efficient, endless hot water that keeps working.
Our expertise includes:
- Condensing and non-condensing gas tankless units with PVC or stainless vent pipe
- Careful sizing and venting for optimal performance.
- Isolation valve kits and scale filters for hard water protection

Additional Plumbing Installation Services in Mount Pleasant, SC
We install water heaters, pumps, lines, and fixtures across Mount Pleasant, SC with careful, permitted work that passes inspection the first time.

Customers
Why Choose KBN Plumbing for Tankless Water Heater Installation in Mount Pleasant, SC?
Our team understands how water hardness and seasonal temperature swings affect tankless performance. Most municipal water in South Carolina comes from rivers and reservoirs, so it tends to run soft and leaves less scale than in many other states. We will guide you through the process, from selection to final setup, with transparency and expertise.
- Endless Hot Water, Never run out of hot water again, even with several showers or appliances running at once.
- Gas Done Right, Gas lines are upsized when needed so the heater never starves for fuel.
- Longer Lifespan, Tankless water heaters usually last longer than conventional models, offering a better long-term investment.
Citywide Coverage
We understand that hot water is essential, which is why our technicians are dispatched across Mount Pleasant daily. You can count on KBN Plumbing to be there when you need expert tankless water heater installation, no matter your exact location.
Experienced Team
Every technician at KBN Plumbing is committed to ongoing education, staying current with advances in tankless technology and local plumbing codes. This expertise supports a safe, reliable and high-performing installation.
Safety-First Approach
We make sure your new tankless unit is installed safely and correctly, following all manufacturer specifications and South Carolina regulations. Trust KBN Plumbing to prioritize the well-being of your family and home during every step of the installation.
Trusted Certified Mount Pleasant Plumbing Services Professionals
At KBN Plumbing, we take pride in providing certified plumbing services throughout Mount Pleasant, SC. Backed by leading industry credentials, our experienced plumbers combine technical skill with genuine customer care. Whether it is repair, installation, or maintenance, we follow strict safety and quality standards to deliver long-lasting results you can trust.
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PHCC Plumbing Contractor Recognition
Better Business Bureau (BBB) Accreditation
Angi Certified Pro
ISO 9001 Quality Management CertificationReliable Tankless Water Heater Installation Services in Mount Pleasant, SC
Tankless Water Heater Replacement in Mount Pleasant, SC
If your old tankless unit is failing or you are upgrading from a traditional tank, KBN Plumbing offers seamless tankless water heater replacement. We carefully remove the old unit, make any needed adjustments to plumbing and venting and install your new, more efficient model. Our goal is to make the transition as smooth as possible, keeping continuous hot water in your Mount Pleasant, SC home.

Recirculation Systems for Tankless Heaters in Mount Pleasant
Tankless heaters can take a few extra seconds to deliver hot water to distant fixtures. A recirculation pump or dedicated return line keeps hot water close to faucets, cutting wait time and water waste. Some units have built-in pumps with smart scheduling. We design the system to fit your plumbing layout and usage patterns.
Rinnai Tankless Water Heater Installation in Mount Pleasant, SC
Rinnai tankless water heaters are a popular choice for their reliability and long lifespan, making them a smart investment for homeowners across Mount Pleasant, SC. Our plumbers are factory-trained on Rinnai systems, ensuring a clean installation that follows all manufacturer specifications. We make sure gas line sizing, venting and water connections are correct so your Rinnai unit provides endless hot water reliably for years.
Commercial Tankless Water Heater Installation in Mount Pleasant
Businesses often have higher and more consistent hot water demands than homes. KBN Plumbing provides commercial tankless water heater installation, sizing systems to meet the needs of restaurants, salons or other commercial spaces. We understand the value of minimal disruption to your operations during installation, ensuring a quick and professional setup in Mount Pleasant.
Tankless Water Heater Relocation in Mount Pleasant
Sometimes the ideal spot for a tankless water heater is not where your old tank was located. For homeowners in Mount Pleasant looking to free up space or improve access, KBN Plumbing offers professional tankless water heater relocation. This can involve rerouting gas or water lines and possibly electrical work, all handled with precision and to local codes by our experienced team.
Cost-Effective Tankless Conversions in Mount Pleasant, SC
While the initial cost of a tankless water heater installation in Mount Pleasant, SC may be higher than a traditional tank, the long-term energy savings and longer lifespan often make it a more cost-effective solution. We provide detailed estimates, outlining the benefits and potential rebates, to help you make an informed decision for your home. Our installations are designed for maximum efficiency, putting money back in your pocket.
Residential Tankless System Upgrades in Mount Pleasant
Upgrading your traditional hot water tank to a tankless system in Mount Pleasant can noticeably improve efficiency and comfort. We assess your home's hot water demands, existing plumbing and utility connections to recommend the best tankless model for your household size and usage patterns. Our team manages the entire conversion, including the safe removal and disposal of your old water heater, minimizing disruption to your daily routine.

Tank to Tankless Conversions in Mount Pleasant
Converting from a tank requires more than swapping units. A 40 gallon tank heater uses roughly 40,000 BTU, while a whole-home tankless unit may need up to 199,000 BTU, so the gas line often needs to be upsized. Venting changes from a metal flue to PVC or stainless, and the unit moves to a wall location. We remove and haul away your old tank and patch the old flue penetration.
Local Tankless Water Heater Installation in Mount Pleasant, SC
Our local presence means faster response times and a team that understands the challenges and opportunities for tankless systems in Mount Pleasant. We are focused on bringing modern, efficient hot water to every home in our community.
Our local presence means faster response times and a commitment to serving our neighbors in Mount Pleasant. You can trust KBN Plumbing to provide timely, professional and courteous service for all your tankless water heater needs, right in your neighborhood.
KBN Plumbing at a Glance
- Licensed and insured plumbers serving Mount Pleasant, SC
- 24/7 emergency service with same-day scheduling
- Upfront, flat-rate pricing before work begins
- 4.8-star rated by 596+ South Carolina customers
Mount Pleasant Map
Mount Pleasant Information
- Population
- 95,232
- Area codes
- 843/443/803
- Service area
- Mount Pleasant and communities within 40 miles
- Nearby
- Charleston, North Charleston, Goose Creek, Summerville
Incoming water temperature shapes how a tankless unit performs in Mount Pleasant, SC, and hard water makes careful installation with descaling valves essential for a long service life.
Expert Services
Trust our professionals for reliable KBN Plumbing solutions in Mount Pleasant, SC.
Our Specialized Plumbing Services in Mount Pleasant, SC
At KBN Plumbing, we provide a complete range of plumbing services across Mount Pleasant, SC. From leak detection to full system installations, our team ensures fast, precise, and affordable service for both residential and commercial properties. Explore our core services below:
Our Process for Installing Tankless Water Heaters in Mount Pleasant, SC
Our tankless water heater installation process at KBN Plumbing is designed to be simple and efficient, from your initial inquiry to enjoying endless hot water.
Request a Quote
Contact us at (864) 588-3813 or through our website to schedule an on-site consultation. We will discuss your hot water needs and assess your home's requirements.
On-Site Assessment
A certified plumber from KBN Plumbing will visit your home to evaluate your current setup, discuss options and provide a detailed, clear quote for the installation.
Professional Installation
Our team will expertly install your new tankless water heater, including all necessary plumbing, gas, electrical and venting work, in compliance with local codes.
Frequently Asked Questions About Tankless Water Heater Installation in Mount Pleasant
The cost of tankless water heater installation in Mount Pleasant usually ranges from $2,500 to $4,500, including the unit and labor. This can vary based on the model, fuel type (gas or electric) and any necessary upgrades to your gas lines or electrical panel. We provide a detailed, upfront quote after an on-site assessment.
Size depends on how many fixtures run at once and your incoming water temperature. Many homes need a unit rated around 7 to 10 gallons per minute.
With annual descaling, tankless units often last 15 to 20 years. Skipping maintenance in hard water areas can shorten that considerably.
In South Carolina, plumbing and often gas or electrical permits are typically required for tankless water heater installation. KBN Plumbing handles all required permit applications and makes sure your installation passes all required inspections by local authorities.
Yes, gas tankless water heaters require specific venting materials and configurations different from traditional tank heaters. Many modern units use PVC or polypropylene for venting, and proper slope and termination are critical for safe and efficient operation. Electric units do not require venting.
Most tankless water heaters come with a manufacturer's warranty of 10 to 15 years on the heat exchanger and 3 to 5 years on parts. KBN Plumbing also provides a warranty on our installation labor, which we will detail in your service agreement.
We install Rinnai, Navien, Noritz and Rheem tankless water heaters. Each brand offers different features, efficiency levels and warranties.
Fluctuating water temperature, error codes, reduced flow and unusual noises are typical signs. Scale buildup is often the cause in hard water areas.
What People Are Saying About Our Plumbing Experts?

Robert G.
The trenchless sewer replacement saved our front yard. They walked us through the camera inspection footage first so we knew exactly what we were paying for.
Sewer Line Replacement · Goose Creek, SC
Mark T.
When our office needed drain cleaning, KBN Plumbing provided quick, reliable service. The plumber arrived on time and made sure every drain flowed perfectly before leaving. Very satisfied.
Drain Cleaning · Mount Pleasant, SC
Patricia H.
We had a slab leak that two other companies could not find. KBN Plumbing located it in under an hour, explained our options, and the price matched the quote to the dollar.
Slab Leak Repair · Goose Creek, SC
Daniel K.
A pipe burst at 11 pm and they actually answered. The plumber showed up within the hour, shut everything down, and had us back to normal the next morning. Could not ask for more.
Emergency Plumbing · Hilton Head Island, SC
Emily R.
I called KBN Plumbing for plumbing repair, and the technician was fast, polite, and thorough. They explained the problem clearly and fixed it the same day. I will definitely hire them again. Highly recommended!
Plumbing Repair · North Charleston, SC
Sofia M.
Two new toilets installed in one visit, no mess left behind, and the tech even adjusted a faucet he noticed was dripping. Fair pricing and really friendly.
Toilet Installation · Bluffton, SC













