Tankless Water Heaters
Tankless water heaters deliver hot water on demand instead of storing and reheating a tank full all day, which means lower energy bills and a water heater that never runs out mid-shower.
Licensed, Bonded & InsuredProud partner of these local organizations
Why Choose Us
Why Choose Dr Rooter for Tankless Water Heaters
When it comes to tankless water heaters, time and trust matter. Here is why Lexington homeowners choose us.
24/7 Availability
Plumbing problems do not wait for business hours, and neither do we. Our plumbers are on call around the clock, so you get help exactly when you need it.
Fast Response Times
Our team is local, which means we can get to your home quickly and keep small problems from turning into bigger ones.
Licensed, Experienced Plumbers
Every plumber we send is licensed, background-checked and has seen it all, from a simple leak to a major sewer backup.
Upfront Pricing
We give you a clear price before any work begins, so there are never any surprises on the invoice.
Modern Equipment
From camera inspections to hydro jetting, we use the latest tools to diagnose and fix problems efficiently.
Ready to Get Started?
Call now or book online, we'll take care of the rest.
What's Included
What You Get With Tankless Water Heaters
Endless hot water, no more running out during back-to-back showers
Smaller footprint that frees up space in your utility area
Typically lasts longer than a traditional tank water heater
Installation, replacement and annual maintenance
Common Issues
Common Tankless Water Heater Issues
No Hot Water
This is often caused by a gas supply issue, an ignition failure or a tripped breaker.
Inconsistent Water Temperature
Mineral buildup or a unit sized too small for your household can cause temperature swings.
Error Codes on the Display
Modern tankless units display error codes that point us directly to the issue.
Mineral Scale Buildup
Hard water can build up scale inside the unit over time, reducing efficiency.
Venting Problems
Improper venting can cause performance issues and is a safety concern we check first.
Reduced Flow Rate
A drop in flow can mean the unit needs a routine flush or an internal component is failing.
How It Works
Getting Help Is Simple
Call or Book Online
Tell us what's going on. We'll get you on the schedule, often the same day.
We Diagnose the Problem
Your technician arrives on time, inspects the issue and walks you through the fix and the price before starting.
We Fix It Right
We complete the repair, clean up after ourselves and make sure everything works before we leave.
Prevention
Maintenance Tips to Avoid Bigger Problems
Annual Flushing
A yearly flush clears mineral buildup, especially important with hard water.
Check the Air Intake and Exhaust
Keeping vents clear prevents performance and safety issues.
Monitor Water Pressure
Consistent water pressure helps your unit run efficiently and last longer.
Schedule a Yearly Inspection
A professional check-up catches small issues before they become no-hot-water calls.
See Why Lexington Trusts Dr Rooter
Real feedback from real customers across Lexington and the Midlands. We're proud of every review, good or bad, because it helps us get better.
Read Our ReviewsCommon Questions
Tankless Water Heaters FAQs
Where We Work
Proudly Serving the Midlands
Based in Lexington, SC, our trucks cover Columbia, Cayce, Irmo and the surrounding communities. Tap a pin to find your area, or check your address below.
View All Service AreasCommunities Covered
Get Started Today
Ready to Get It Fixed?
Call now for 24/7 emergency service, or book online and we'll confirm a time that works for you.