Tankless Water Heater Installation in Greenville, SC
Enjoy continuous hot water with a new tankless water heater installed by KBN Plumbing in Greenville, SC.
- Descaling Valves Included
- Modern Hot Water Systems
- Reliable Local Plumbers
- Prompt, Reliable Installation
Get Endless Hot Water and Free Up Garage Space in Greenville, SC.
We size the unit to your fixtures and incoming water temperature so you get steady hot water year-round.
Tankless Water Heater Installation in Greenville, SC Sized for Your Home
KBN Plumbing specializes in professional tankless water heater installation for homeowners across Greenville, SC. We help you move from traditional tank-style heaters to modern, energy-efficient tankless units that provide hot water whenever you need it.
Our expertise includes:
- Gas line upsizing and meter capacity checks for high BTU demand
- Clean integration with existing plumbing systems.
- Isolation valve kits and scale filters for hard water defense

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

Customers
Why Choose KBN Plumbing for Tankless Water Heater Installation in Greenville, SC?
Our commitment to quality service and customer satisfaction makes the difference. We provide clear pricing and reliable workmanship for every tankless water heater project.
- Scale Protection, Isolation valves and scale filters protect the heat exchanger from hard water.
- Gas Done Right, Gas lines are upsized when needed so the heater never starves for fuel.
- Energy Savings, Tankless units only heat water as needed, which can significantly reduce your energy bills compared to traditional tank heaters.
Citywide Coverage
No matter where your home is in Greenville, we can plan a tankless install that suits your layout and gas service. We also handle conversions from attic tanks to wall-mounted units.
Experienced Team
The team has converted many tank-style homes to tankless and knows the usual problems, from undersized gas lines to poor venting. They plan around those issues before the install starts.
Safety-First Approach
Safety and code compliance are top priorities on every tankless water heater installation we take on in Greenville. Our plumbers carefully follow local South Carolina plumbing codes, from gas line connections to proper venting, preventing potential hazards.
Trusted Certified Greenville Plumbing Services Professionals
At KBN Plumbing, we take pride in providing certified plumbing services throughout Greenville, 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 CertificationDependable Tankless Water Heater Installation Services in Greenville, SC
Navien Tankless Water Heater Installation in Greenville
Navien is a leading brand known for its advanced condensing technology and strong energy efficiency. KBN Plumbing is skilled in the precise installation of Navien units in Greenville homes, setting them up for maximum savings and comfort. These sophisticated systems require expert setup to work at their best, and our team is proficient in all Navien models.

Rinnai, Navien and Noritz Installation in Greenville, SC
We install leading tankless brands including Rinnai, Navien, Noritz and Rheem. Rinnai offers a wide model range and strong parts support, while Navien condensing units often include built-in recirculation pumps. Noritz is known for durable commercial-grade heat exchangers. We help you compare models based on flow rate, efficiency and warranty.
Upgrading from Tank to Tankless in Greenville, SC
Making the switch from a traditional tank water heater to a tankless system involves more than simply swapping units. It often requires changes to gas lines, electrical wiring and venting. KBN Plumbing manages all aspects of this conversion, making sure all upgrades meet current codes and your new tankless unit performs optimally, giving you a modern hot water solution in Greenville, SC.
Tank to Tankless Conversions in Greenville
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 usually 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.
Residential Tankless System Upgrades in Greenville
Upgrading your traditional hot water tank to a tankless system in Greenville 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, limiting disruption to your daily routine.
Propane Tankless Water Heater Installation in Greenville
Many homes outside natural gas service areas depend on propane. KBN Plumbing is experienced in installing propane tankless water heaters, which require specific gas line sizing, regulator adjustments and venting. We make sure your propane system is installed correctly for the best efficiency and safety, providing reliable hot water for your Greenville residence.
Hard Water Protection for Tankless Units in Greenville, SC
Calcium scale is the leading cause of tankless heater failure. 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. Scale coats the heat exchanger, reducing efficiency and triggering error codes. We install isolation valves so the unit can be flushed with a vinegar or descaling solution once a year. A scale inhibitor cartridge or whole-home softener provides added protection.

Rinnai Tankless Water Heater Installation in Greenville, SC
Rinnai tankless water heaters are a top choice for their reliability and long lifespan, making them a smart investment for homeowners across Greenville, SC. Our plumbers are factory-trained on Rinnai systems, delivering 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 efficiently for years.
Tankless Water Heater Installation Near Me in Greenville, SC
Our local presence means faster response times and a team that understands the challenges and opportunities for tankless systems in Greenville. We are focused on bringing modern, efficient hot water to every home in our community.
If you are searching for tankless water heater installation near me, our local team can visit, measure and give you a firm quote. We check your gas meter, line size and venting options during the same visit. Many installs are scheduled within a few days.
KBN Plumbing at a Glance
- Fully licensed plumbing team covering Greenville, SC
- 24/7 emergency service with same-day scheduling
- Clear written estimates, no hidden fees
- 4.8-star rated by 596+ South Carolina customers
Greenville Map
Greenville Information
- Population
- 72,824
- Area codes
- 864/423/803
- Service area
- Greenville and communities within 40 miles
- Nearby
- Greer, Spartanburg, Rock Hill, Fort Mill
Incoming water temperature shapes how a tankless unit performs in Greenville, 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 Greenville, SC.
Our Specialized Plumbing Services in Greenville, SC
At KBN Plumbing, we provide a complete range of plumbing services across Greenville, 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 Greenville, 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 KBN Plumbing at (864) 588-3813 to schedule a free consultation. We will discuss your hot water needs and assess your home's specific requirements for a tankless system.
On-Site Assessment
Our experienced plumber will visit your Greenville home to evaluate your current setup, determine the best tankless model and provide a detailed, transparent estimate.
Professional Installation
Once approved, our licensed technicians will install your new tankless water heater, making sure all gas, water and vent connections are up to code and fully working.
Frequently Asked Questions About Tankless Water Heater Installation in Greenville
Most gas tankless installations cost $3,000 to $6,500 including the unit, labor, venting and common gas line upgrades. Electric units can be less, though panel upgrades can add $1,000 to $3,000.
Yes, tankless water heaters are very energy efficient in almost any climate. Warm weather for most of the year means water heaters, irrigation lines and outdoor fixtures in South Carolina see steady use with little seasonal rest. Since they only heat water on demand, they avoid the standby heat loss typical of traditional tanks, which can be significant even in milder seasons.
A standard tankless water heater installation, replacing an existing tank, usually takes 4 to 8 hours. If extensive plumbing or gas line changes are required, it may take a full day. Our team works efficiently to restore your hot water as quickly as possible.
Tankless units eliminate standby heat loss, which can lower water heating energy use. Savings vary based on household size and usage habits.
Yes, installing a new tankless water heater or replacing an existing one in Greenville typically requires a plumbing permit. This ensures the installation meets local building and safety codes. KBN Plumbing handles all necessary permitting paperwork for you.
In South Carolina, plumbing and often gas or electrical permits are usually required for tankless water heater installation. KBN Plumbing handles all necessary permit applications and makes sure your installation passes all required inspections by local authorities.
With annual descaling, tankless units often last 15 to 20 years. Skipping maintenance in hard water areas can shorten that significantly.
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.
What People Are Saying About Our Plumbing Experts?

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 · Columbia, SC
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 · Fort Mill, 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 · Columbia, 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 · Greer, SC
Laura S.
I scheduled a water heater replacement, and the team made the process smooth and affordable. The new unit works perfectly, and they cleaned up after completing the job.
Water Heater Replacement · Aiken, 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 · Columbia, SC













