519 Bertrand Dr, Lafayette, LA 70506 Mon–Fri 8:00am–5:00pm • 24/7 Emergency Service
 24/7 Emergency Plumbing Service — Call (337) 547-8365 Now
Call Now Get a Quote

Tankless Water Heater Installation & Repair

Endless hot water on demand. Code-compliant installation, service, and repair of tankless (on-demand) water heater systems.

Overview

Tankless (on-demand) water heaters deliver continuous hot water while using less energy and less space than a traditional storage tank. Our licensed technicians install, service, and repair tankless systems for commercial buildings, multi-unit properties, and homes throughout Lafayette, LA.

Every installation is built to manufacturer specifications and local plumbing code — from properly sized gas and water lines to correctly vented exhaust, condensate drainage, and thermal expansion protection. We work with all major tankless brands and can recommend the right unit size for your building's hot water demand.

Finished tankless water heater installation with copper piping, expansion tank, and PVC venting in a utility closet

What's Included

  • New tankless unit installation

    Sizing, gas line, water line, and venting done to code, with a clean, organized finish.

  • Repair & troubleshooting

    Error codes, ignition failures, flow sensor issues, and scaling problems diagnosed and fixed fast.

  • Maintenance & descaling

    Routine flushing and descaling to protect efficiency and extend the unit's service life.

  • Tank-to-tankless conversions

    Replace an aging storage tank water heater with a space-saving, high-efficiency tankless system.

  • Manufacturer-compliant warranty work

    Installations documented and performed to keep your manufacturer warranty intact.

Tankless water heater unit with access panel open showing internal components during a commercial installation

Why Choose 5Star Plumbing Commercial

Every job is performed by a licensed, insured plumber and completed to local code. We keep you informed at every step, protect your property while we work, and test everything before we consider the job finished. For tankless water heater installation & repair anywhere in Lafayette, Broussard, Youngsville, Scott, Carencro, Duson, and the greater Acadiana area, we're a call away — including for 24/7 emergencies.

Common Questions About Tankless Water Heater Installation & Repair

How long does a tankless water heater installation take?
A standard commercial or residential swap typically takes one work day, depending on gas line, venting, and electrical requirements at your property.
Do you service all tankless brands?
Yes — our technicians install and repair all major tankless water heater brands and models.

Need Tankless Water Heater Installation & Repair?

Call now for 24/7 emergency service, or request a free estimate online.

Related

Other Services

Copper pipe rough-in stub-outs mounted on wall framing during a commercial plumbing installation

Commercial Repiping & Copper Pipe Installation

Precision copper rough-in and full-building repiping for commercial properties, backed by clean craftsmanship and code compliance.

Learn More
Outdoor backflow preventer assembly with red shutoff handle installed on a commercial water line

Backflow Prevention Testing & Repair

Protect your building's water supply with certified backflow preventer testing, repair, and installation.

Learn More
Close-up of a corroded underground pipe fitting leaking water, exposed during an emergency repair

Leak Detection & Emergency Pipe Repair

Fast, accurate leak detection and emergency pipe repair to stop water damage before it spreads — available 24/7.

Learn More