Tankless Water Heater Installation in Shreveport, LA

Certified Tankless System Installers — Serving the Greater Shreveport Area

Tankless water heaters deliver hot water on demand without the energy waste of keeping a storage tank heated around the clock. Mark Johnson & Sons Plumbing specializes in professional tankless installations for Shreveport homes and businesses, helping property owners reduce energy costs while gaining an unlimited supply of hot water whenever they need it. As part of our comprehensive water heater services in Shreveport, we deliver professional results backed by decades of experience.

Why Tankless Water Heaters Make Sense in Shreveport

Traditional tank water heaters keep 40 to 80 gallons of water heated 24 hours a day, whether you’re using it or not. That standby heat loss accounts for a significant portion of your monthly energy bill. In Shreveport, where summer temperatures regularly push past 95 degrees and ground water enters the system warmer than in northern states, tankless units operate with even greater efficiency — the incoming water requires less energy to reach your desired temperature during the warmer months.

Tankless systems also carry a much longer lifespan. While tank units in the Shreveport area typically last 8 to 12 years before mineral buildup and corrosion take their toll, a well-maintained tankless heater can operate effectively for 20 years or more. That extended service life, combined with monthly energy savings of 20 to 30 percent on water heating costs, makes the higher upfront investment worthwhile for most homeowners.

Space is another practical advantage. Tankless units mount directly to a wall and free up the floor area that a bulky storage tank once occupied — a real benefit in older Shreveport homes where utility closets and garages are already tight on space.

Our Tankless Installation Services

Whole-Home Tankless Conversion

Switching from a traditional tank to a tankless system involves more than swapping equipment. We assess your home’s gas line capacity (or electrical panel for electric models), upgrade supply lines if needed, install proper venting per Louisiana mechanical code, and configure the unit for optimal performance based on your household’s peak hot water demand.

Point-of-Use Tankless Installation

For homes where a single whole-house unit isn’t practical, or where a distant bathroom suffers from long wait times for hot water, we install compact point-of-use tankless heaters. These small units mount under sinks or in closets and deliver instant hot water exactly where it’s needed.

Gas Line Modifications

Many Shreveport homes need a larger gas line to support a tankless water heater’s higher BTU demand. Our licensed technicians handle all gas line sizing, routing, and connections to ensure safe, code-compliant operation. We also coordinate any required inspections with the City of Shreveport.

Tankless System Sizing

An undersized tankless unit leads to frustration — water temperature drops when multiple fixtures run simultaneously. We calculate your home’s flow rate requirements by evaluating the number of bathrooms, appliances, and fixtures that may operate at the same time, then recommend a unit with the right GPM rating for your specific needs.

Brand Selection and Guidance

We install tankless water heaters from leading manufacturers including Rinnai, Navien, Noritz, and Rheem. Each brand has strengths depending on your home’s configuration, fuel type, and budget. We provide honest recommendations based on performance data and our field experience — not sales incentives.

Call us at 318-319-0220 today or click below to schedule service.

When to Consider a Tankless Water Heater

• Your current tank water heater is nearing the end of its lifespan
• You’re tired of running out of hot water during back-to-back showers
• Monthly energy bills feel higher than they should be
• You want to reclaim floor space in your garage, closet, or utility room
• You’re building a new home or completing a major renovation
• Your household size has increased and your current system can’t keep up
• You want a longer-lasting system that requires less frequent replacement

Why Choose Mark Johnson & Sons in Shreveport

• Deep tankless expertise — we’ve installed hundreds of tankless systems across Northern Louisiana and understand the specific requirements of Shreveport homes
• Licensed journeymen handle every installation — no subcontractors, no shortcuts
• Upfront flat-rate pricing — the quote we give is the price you pay, including all materials and labor
• Full permit management — we pull the necessary permits and schedule inspections so you don’t have to
• Same-day consultations available — our trucks are in the Shreveport area daily
• Veteran-owned, family values — Mark Johnson founded this company in 1997 on a commitment to doing things right the first time

Frequently Asked Questions

How much does tankless water heater installation cost in Shreveport?

Installation costs vary based on the unit selected, fuel type, and any gas line or venting modifications your home requires. A straightforward gas tankless replacement typically ranges from $2,500 to $4,500 installed. We provide a detailed written estimate before any work begins.

Will a tankless water heater really lower my energy bills?

For most Shreveport households, yes. The U.S. Department of Energy estimates that tankless water heaters are 24 to 34 percent more energy efficient than conventional storage tanks for homes that use 41 gallons or less of hot water daily. Larger households still see savings of 8 to 14 percent.

Can my existing gas line support a tankless unit?

Many homes need a gas line upgrade because tankless heaters have a higher BTU demand than standard tanks. We evaluate your current gas line size during the initial assessment and include any necessary upgrades in our quote.

How long does a tankless installation take?

A direct replacement where gas and venting are already compatible typically takes 3 to 5 hours. A full conversion from tank to tankless — including gas line work and new venting — usually takes a full day.

Do tankless water heaters work well with Shreveport’s water?

They do, but Shreveport’s water has moderate mineral content that can cause scale buildup inside the heat exchanger over time. We recommend annual descaling to maintain peak efficiency. Installing a water softener upstream further protects the unit and extends its lifespan.

What brands do you recommend?

We most frequently install Rinnai and Navien for residential applications in Shreveport. Both brands offer strong warranties, high efficiency ratings, and reliable parts availability. We’ll recommend the best fit based on your home’s specific requirements.

Is a permit required for tankless installation in Shreveport?

Yes. The City of Shreveport requires plumbing and mechanical permits for water heater installations, including tankless conversions. We handle all permitting and ensure the installation passes inspection.

What size tankless water heater do I need?

Sizing depends on how many fixtures you want to run simultaneously and the temperature rise required. In Shreveport, incoming water temperatures range from about 52 degrees in winter to 78 degrees in summer. A unit rated at 8 to 10 GPM handles most three- to four-bathroom homes comfortably.

Can I install a tankless water heater outside?

Yes, outdoor-rated models are available and work well in Shreveport’s climate. Outdoor installation eliminates the need for indoor venting, which can simplify the job and reduce installation costs. We assess your property to determine whether an outdoor or indoor unit is the better choice.

Do tankless water heaters require maintenance?

Annual maintenance — primarily flushing the heat exchanger with a descaling solution — keeps the unit running efficiently and protects your warranty. We offer maintenance service and can set up annual reminders so you never miss a flush.

Related Shreveport Services

• Water Heater Repair in Shreveport
• Water Heater Installation in Shreveport

View all water heater services in Shreveport or explore our full Shreveport service area.

Contact Us Today

Ready to upgrade to endless hot water and lower energy bills? Mark Johnson & Sons Plumbing makes tankless installation straightforward and stress-free for Shreveport homeowners. Call 318-319-0220 to schedule your in-home assessment or book online. Old-fashioned service with modern technology.