Tankless Water Heaters in Lexington and Richland County, SC
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Endless Hot Water & High-Efficiency Comfort
Traditional water heaters store hot water in a tank, while tankless systems heat water on demand. As a result, homeowners in Lexington and Richland Counties enjoy greater efficiency, unlimited hot water, and lower energy use.
Kay Plumbing, Heating & Cooling provides complete tankless water heater services—including installation, repair, replacement, descaling, and maintenance—across the South Carolina Midlands.
Whether you’re upgrading from a tank or need service for your current unit, our licensed professionals will recommend solutions that improve efficiency, reliability, and comfort for the long run. Since 2008, homeowners in Lexington, Columbia, and nearby areas have relied on Kay Plumbing for honest service and expert installation.
When the owner gives it a thumbs-up, you know it’s a quality installation. We love bringing the unbeatable performance, energy-efficient savings, and long-term value of Noritz tankless water heater systems to homeowners across the Midlands!
Why Homeowners Are Switching to Tankless Water Heaters
Tankless systems are popular because they offer comfort and long-lasting efficiency. Unlike traditional tank systems, tankless water heaters heat water only when you need it. Benefits of tankless water heaters include:
For many homeowners, choosing a tankless system is a smarter long-term investment than replacing traditional tanks over and over. In 2026, the financial benefits of tankless systems are better than ever.
Many high-efficiency models now qualify for federal tax credits and local utility rebates, thanks to updated DOE efficiency standards and Energy Star requirements. These incentives can help reduce your upfront costs and lower your energy bills over time.ills.
Why Homeowners Choose Kay Plumbing for Tankless Water Heaters
Since 2008, Kay Plumbing, Heating & Cooling has earned a reputation for being reliable, transparent, and caring for customers over the long term.
Knowlegable Experts
Our team installs and services both gas- and electric-powered tankless systems in accordance with current plumbing and mechanical code standards.
Upfront Pricing
Clear communication and transparent pricing before work begins.
24/7 Emergency Availability
If your hot water system fails unexpectedly, our team is ready to help.
Licensed Plumbing Professionals
Our team is made up of experienced, licensed technicians who know how to service both tank and tankless systems.
Highly Repubable Company
With over 1,500 five-star reviews and an A+ BBB rating, homeowners across the Midlands trust Kay Plumbing for reliable service.
Long-Term System Protection
We focus on proper sizing, water-quality protection, and preventive maintenance to maximize system lifespan.
Tankless Water Heater Installation
Installing a tankless system involves more than just taking out your old water heater.
Proper installation may involve:
If your tankless system is too small, it might not keep up when your household uses a lot of hot water.
Our technicians evaluate:
This way, your new system will run efficiently for years to come.
We also help prevent a common issue known as the “Cold Water Sandwich.” Without the right recirculation or calibration, you might get bursts of cold water between hot cycles. Kay Plumbing sets up your recirculation and flow settings so you always get steady hot water.
Tankless Water Heater Repair
Tankless systems are efficient, but their advanced parts need specialized diagnostics when something goes wrong.
We repair:
In Lexington and Richland Counties, many repairs are caused by hard water or skipped maintenance.
Why Tankless Systems Need Maintenance in the Midlands
Tankless water heaters are especially sensitive to mineral buildup.
The mineral-rich water in South Carolina can cause scale to build up inside your system, which lowers efficiency and water flow.
Without routine descaling, tankless systems may experience:
Regular maintenance is essential for keeping your system working well over the years.
The “Hard Water” Problem in Lexington & Richland Counties
Hard water across the Midlands puts extra strain on tankless systems.
Mineral buildup is especially common in:
Inside tankless systems, minerals collect on heat exchangers as water is heated. Over time, this buildup covers the heating surface, making the system work harder and reducing its efficiency.
Professional descaling gets rid of these deposits before they cause permanent damage.
The Columbia “Musty Water” Problem
Many homeowners in the Columbia area notice an earthy or musty smell, especially during the warmer months. This is often due to natural compounds like Geosmin and MIB, which are found in water from the Broad River and Lake Murray.
Since a tankless system is a long-term investment, many homeowners also install a whole-home water filtration system at the same time.
High-flow carbon filtration can help reduce:
This way, your hot water is not just endless, but also cleaner and more pleasant to use.
Lake Murray Humidity & Corrosion Concerns
Homes near Lake Murray, Chapin, Yacht Cove, and other waterfront areas often have higher humidity, which can increase the risk of corrosion around plumbing systems.
For gas tankless systems, humidity may impact:
We check for moisture that could impact your system’s long-term performance.
Why Proper Tankless Sizing Matters
A common mistake when installing tankless systems is choosing the wrong size.
Tankless systems are built based on “flow rate,” meaning how many fixtures and how much hot water you use at the same time.
An undersized system may struggle during:
At Kay Plumbing, we figure out your home’s real hot water needs to make sure your system works well all year long.
Tankless vs. Traditional Water Heaters
Kay Plumbing repairs both conventional and tankless water heater systems.
Tank Water Heaters
Ideal for: Smaller households with lower hot water demand looking for lower upfront costs and simplified care.
Tankless Water Heater
Ideal for: Large families with high water demand looking to lower monthly energy bills and maximize space.
Our team helps you compare the two systems honestly, focusing on long-term value rather than sales pressure.
Kay Comfort Club Protection
Regular maintenance is crucial for keeping your tankless system protected over the long term.
Our Kay Comfort Club membership helps homeowners stay ahead of costly plumbing and HVAC issues with scheduled preventive maintenance and priority service.
Membership benefits may include:
Regular maintenance helps your tankless system run efficiently and protects your investment.
Upgrade to a Tankless Water Heater Today
If you’re tired of running out of hot water or dealing with rising utility costs, a tankless water heater may be the right solution for your home. Kay Plumbing provides professional tankless water heater installation, repair, and maintenance throughout Lexington County and Richland County.
Call Kay Plumbing today to schedule your free estimate or a same-day service appointment, and start enjoying endless hot water and lower utility bills.
Service Areas
Kay Plumbing proudly offers tankless water heater services in:
Lexington County, SC
Richland County, SC
Our technicians regularly travel major Midlands corridors, including I-20, I-26, Highway 378, US-1, Forest Drive, Sunset Boulevard, and Lake Murray Boulevard.