On-Demand Water Heaters for Boerne, TX

We Install On-Demand Water Heaters in Boerne, Fair Oaks Ranch, & the Texas Hill Country

Welcome to Olde Town Plumbing - Your On-Demand Water Heater Experts

Are you tired of running out of hot water in the middle of your shower or washing dishes? It’s time to consider the convenience and efficiency of on-demand water heaters. At Olde Town Plumbing, we specialize in providing top-notch plumbing solutions, and on-demand water heaters are no exception.


We have 2 offices in the Boerne area: 140 E Bandera RD just off Main Street in Boerne and 28550 I-10 W, Ste 2, near Fair Oaks Ranch.  Call us at 830-446-5227.

Not Your Traditional Water Heater

Why Choose On-Demand Water Heaters?

Hot water is an essential part of our daily lives, and having it available whenever you need it is a game-changer. On-demand water heaters, also known as tankless water heaters, offer numerous benefits, making them a popular choice for homeowners and businesses alike.

  1. Endless Hot Water: Traditional water heaters store a limited amount of hot water, which can run out during heavy usage. On-demand water heaters provide a continuous supply of hot water, ensuring you never run out.
  1. Energy Efficiency: Tankless water heaters only heat water as needed, reducing energy consumption and lowering your utility bills.
  1. Space-Saving Design: On-demand water heaters are compact and wall-mounted, freeing up valuable space in your utility room.
  1. Longevity: With proper maintenance, tankless water heaters can last significantly longer than traditional tank-style heaters.
  1. Environmentally Friendly: By reducing energy consumption, tankless water heaters are a greener choice, helping to lower your carbon footprint.

Providing on-demand water heater installation & replacement near Boerne, TX

We are a full service water heater plumbing company

Our On-Demand Water Heater Services

At Olde Town Plumbing, we offer a wide range of services related to on-demand water heaters to meet all your hot water needs. Our experts are trained and experienced in installing, repairing, and maintaining tankless water heaters. Whether you’re looking to upgrade your existing system or install a brand new one, we’ve got you covered.


  1. Installation: Our skilled technicians will assess your hot water demands and recommend the right tankless water heater for your home or business. We’ll ensure a seamless installation that meets your requirements.
  2. Repair: If your on-demand water heater is not performing optimally, our team can quickly diagnose and repair any issues, getting your hot water back on track.
  3. Maintenance: Regular maintenance is essential to ensure your tankless water heater operates efficiently and lasts for years. Our maintenance services will keep your system in excellent condition.
white Navien tankless water heater installed in garage
water heater complements: booster, filter, expansion tanks
Water heater boosters, whole house filters, water heater expansion tanks, and water softeners are a few on the complementary products we offer.

Complementary Services

In addition to our on-demand water heater services, we also offer a range of related plumbing services, including gas water heater installation and repairs. If you’re looking for the benefits of gas water heating, check out our dedicated page at https://oldetownplumbing.com/gas-water-heaters/. Gas water heaters are an excellent choice for those who prefer this energy source.

Furthermore, for more in-depth information on the advantages of on-demand water heaters and how they work, you can visit our main water heater page and our specific page on tankless water heaters. These pages offer detailed insights into the benefits and workings of these systems.

We also install water heater boosters which can increase the capacity of your current tank water heater.  And we install water softeners which can extend the life of your water heater – tank or tankless – and give you a better quality of water.

Get Service Fast

Contact Us Today

Don’t suffer from insufficient hot water any longer. Upgrade to an on-demand water heater installed by top-rated Boerne, TX plumbers from Olde Town Plumbing and experience the convenience and energy efficiency that comes with it. Contact us today to schedule an appointment, request a quote, or get answers to any questions you may have. Our team is here to serve your plumbing needs.


At Olde Town Plumbing, we’re not just experts in plumbing; we’re experts in customer satisfaction. Choose us for all your on-demand water heater needs, and you won’t be disappointed.

two different models of Rheem tankless water heaters

Need a Different Plumbing Service?

faucet icon

Extend the life of your faucets by replacing o-rings, cartridges, and other parts that wear out.

Combat the effects of hard water and preserve the life of your plumbing with a water softener.

Water heater repairs can extend the life of your conventional or tankless water heater. 

Prevent plumbing emergencies with proactive drain cleaning and drain line repairs or replacement.

Prevent damage to your home by eradicating leaks with flexible PEX water lines or new drain lines.

toilet bowl for toilet repair services

Conserve water and protect your home with reliable repairs and installation of low-flow toilets.

Enjoy the efficiency of natural gas and propane appliances with expert gas line installation and repair.

Sewer Repairs

Protect your home and family with dependable sewer line inspections, repairs and replacement.

gas tankless water heater in attic
Useful Life of Tankless Water Heater

How Often Does a Tankless Water Heater Need to be Replaced?

Boerne and the surrounding Texas Hill Country have high mineral content in the  water that can affect plumbing appliances including tankless water heaters.  However, most tankless units will last for 20+ years when used in combination with an inline whole-house filter and a water softener.  In addition, proper maintenance and a few tankless water heater repairs will help to ensure you get the full life expectance from your tankless unit.

Need to replace your water heater?  Considering going tankless?  Give us a call at 830-446-5227 for a free no obligation estimate.  See why Olde Town Plumbing is your choice for reliable plumbers in Boerne, Bulverde and all of Kendall County.

Customer Testimonial

"When you need a plumber – you want the Best! Rob Williams is the Best in the business. We manage many homes in and around the Boerne area and Rob is our “Go To” plumber, not only at our rental properties, but our personal home as well. He has been an enormous help to us. We have had several very serious situations where Rob has really come through for us. If you’re looking for a great plumber – your search is over. Rob is the man."
David Klobedans
Property Manager - Keller Williams, Boerne, TX
Give Us a Call

Olde Town Plumbing
Your Plumbers for Tankless Water Heater Installation & Repair

Want to switch from a traditional water heater to a tankless, on-demand unit?  Give us a call.  We can re-plumb your home to replace your tank water heater with a tankless unit.  In addition, we can add natural gas or propane lines to allow for installation of a more efficient gas powered on-demand water heater.


Already have a tankless water heater, but it needs repair?   We do that too.


Call us today to schedule your service appointment. 830-446-5227

tankless water heater installed on home exterior
Common Tankless Water Heater Questions

Is One Tankless Water Heater Enough for my Boerne Home?

When you purchase a new tankless water heaters, one of the biggest concerns is getting a unit that will meet the hot water needs of your family.  When deciding if you need more than one tankless water heater for your home, you should consider these points.

  • Is your home currently plumbed for more than one water heater?  If it is, it is usually most economical to leave the plumbing like it is rather than redirecting the plumbing to a single tankless water heater.

  • How much hot water will you need at one time?  Tankless water heater produce hot water at a gallons per minute (GPM) rate.  If you might be running the dishwasher, washing machine, and a couple of showers at the same time, you’ll want to plan accordingly with the GPM of the tankless unit.  You can also consider a point-of-use tankless water heater dedicated to your washing machine or the master bath with it’s large Jacuzzi tub.

  • Is there a more economical option?  When looking at the hot water consumption in your Boerne home, you may find that for the GPM rate you need it is more economical to install two tankless water heaters to handle the hot water needs, rather than installing one large unit.

Can You Run Out Of Water With a Tankless Water Heater?

While you can’t run out of hot water with a tankless water heater that is functioning properly, you can have a lack of hot water at your tap.  If the tankless hot water heater installed in your home only produces 2 gallons per minute (GPM) of hot water, but you have multiple appliances and faucets all drawing on the hot water at the same time for a total of 3 GPM, there will not be enough hot water to supply all of the point-of-use locations.  This is why it is imperative you size your tankless water heater correctly for the hot water needs in your home.

How do you Replace a Tank Water Heater with a Tankless Water Heater?

The complexity of replacing a conventional tank water heater with a tankless unit depends on the characteristics of the units and the plumbing system in your home.  Most of the time this type of water heater installation is not a DIY project.  Consider these aspects of the replacement process:

  1. Location –  Will the new tankless unit be placed in the same location as the current water heater or will it need to be moved to a new location?
  2. Energy Source – Will you be switching from electric energy to gas when you install the tankless unit?
  3. Plumbing Fittings – Will your current plumbing system need a major overhaul to install the new tankless unit or just a few simple plumbing fittings?

If you’re not a plumbing renovation pro, it’s best to leave it to the pros from Olde Town Plumbing when it’s time to replace your tank water heater with a tankless unit.  Give us a call for a free, no-obligation quote.

Our Plumbers

What Sets Us Apart


When you have a plumbing problem, the last thing you want is to deal with a rude service technician.  We strive to provide good old-fashioned service like was common in old times.  We know our customers are our Hill Country neighbors and friends, and we treat you with the kindness and respect you deserve.  We really mean it when we say, “How can we help?”


We value honesty and integrity in our own lives, and we bring those values into our plumbing company as well.  When you choose Olde Town Plumbing, you’re choosing plumbers who won’t try to upsell you on products or services that you don’t need.  We’ll provide honest evaluations of your plumbing problems, reasonable solutions, and fair pricing for the needed for repairs.


You can count on our plumbing professionals to arrive on time and to work efficiently and competently.  To keep your plumbing inconvenience minimal, we’ll give you a call when we’re headed your direction, so you know exactly when to expect us.  And with our fully stock service vehicles, we won’t waste your time running back and forth to the home improvement store for parts.

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