Tankless Water Heater Installation in Northwest Indiana

Never run out of hot water again. Downing Plumbing installs gas and electric tankless water heaters throughout Lake, Porter, and LaPorte County — with proper sizing and code-compliant installation.

TANKLESS WATER HEATER INSTALLATION

On-Demand Hot Water — Done Right

Tankless water heaters heat water only when you need it, eliminating standby heat loss and delivering a continuous supply of hot water rather than a fixed tank that eventually runs cold. A properly sized gas tankless system is 20–30% more energy efficient than a standard tank heater — savings that add up significantly over the unit's 20+ year lifespan.

The key word is "properly sized." Tankless systems are rated by flow rate (gallons per minute) and temperature rise, and an undersized unit will leave you with lukewarm water when multiple fixtures run simultaneously. Downing Plumbing calculates the correct sizing based on your home's incoming water temperature, the number of simultaneous hot water demands, and your peak usage patterns — so the unit performs as expected from day one.

Gas tankless installation often requires upgrading the gas line to supply adequate BTUs and installing a dedicated direct-vent system through an exterior wall. Electric tankless units may require a panel upgrade. We assess all of these requirements upfront so there are no surprises during installation, and we handle the complete job from gas line work to venting to final commissioning.

Tankless water heater installation

Tankless Water Heater Installation Services

A complete installation from assessment through commissioning — including all necessary upgrades.

Proper unit sizing and selection
Gas tankless water heater installation
Electric tankless water heater installation
Gas line upgrade when required
Direct-vent system installation
Old tank water heater removal
Water supply line connections
Whole-home and point-of-use models
Code-compliant installation and testing

Ready to Go Tankless?

Downing Plumbing installs tankless water heaters throughout Northwest Indiana. Call to discuss your home's requirements, or schedule a consultation online.

The Tankless Installation Process

More involved than a standard tank swap — but we handle every step.

1

Site Assessment

We evaluate your gas line capacity, venting options, and hot water demand to select the correctly sized unit and identify any required upgrades.

2

Remove Old Unit

We drain and remove the old tank water heater and prepare the installation location for the tankless unit.

3

Install Tankless Unit

We mount the unit, run the vent through the exterior wall, upgrade the gas line if needed, and connect water supply and return lines.

4

Commission and Test

We start up the unit, verify hot water delivery at multiple simultaneous fixtures, check for error codes, and walk you through the controls.

CUSTOMER REVIEWS

Trusted by Homeowners & Businesses Across the Region

See what customers are saying about Downing Plumbing's professional plumbing, drain cleaning, sewer, and water heater services throughout Northwest Indiana.

★★★★★

"Exceptional service in an emergency situation! Incredible organization to deal with!!"

★★★★★

"Same day service. Knowledgeable craftsmen did excellent work. No complaints."

★★★★★

"The installation of my new water heater was done with courtesy and efficiency."

READY TO GET STARTED?

Need Plumbing Service?

Whether you need drain cleaning, sewer repair, water heater service, sump pump repairs, or emergency plumbing help, Downing Plumbing is ready to help.

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