Tankless Water Heater Installation and Service in Hammond, IN

Reichelt Plumbing provides tankless water heater installation, repair, and maintenance services throughout Hammond, IN and Lake County, Indiana. Fully licensed, bonded, and insured, our team is BBB Accredited A+ and has served Northwest Indiana homeowners and businesses since 1986. Hammond’s aging housing stock, with a median home construction year of 1952 and nearly 45 percent of homes built before 1950, means a large share of local water heaters are either approaching or past their reliable service life. Reichelt Plumbing installs Navien, Bradford White, AO Smith, and State tankless water heater systems sized correctly for Hammond’s household demand, provides full permit coordination with the City of Hammond, and delivers the flat-rate pricing and 18-month workmanship guarantee that Hammond homeowners have relied on for nearly four decades. Call (219) 322-4906 or visit our Hammond plumbing services page to schedule a consultation.

What Our Hammond Customers Say

“I needed the sewer rodded in my front yard because it was backed up. Within an hour, Sam showed up. He was professional, explained everything very well and did an awesome job. We had this problem in the past and Sam was basically cleaning up what they left behind. This was the first time we were not left with an uneasy feeling about whether the job was really done right or not. We will definitely be using them for future plumbing services.” (Rocio C.)

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He was professional, explained everything very well and did an awesome job.

“I needed the sewer rodded in my front yard because it was backed up. Within an hour, Sam showed up. He was professional, explained everything very well and did an awesome job. We've had this problem in the past and Sam was basically cleaning up what they left behind (A huge ball of roots). This was the first time we weren't left with an uneasy feeling about whether the job was really done right or not. We will definitely be using them for future plumbing services.”

- Rocio C.

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Tankless Water Heaters and Hammond’s Aging Housing Stock

Hammond is the largest city in Lake County, Indiana, with a 2026 population of approximately 75,276 residents and 32,877 housing units. What makes Hammond distinctive from a plumbing service perspective is the age of its housing stock. The median home construction year in Hammond is 1952, and approximately 30 percent of homes were built before 1940, with another 15 percent constructed in the 1940s. This means nearly half of all Hammond homes are 75 to 100-plus years old, many still operating with original or once-replaced conventional tank water heaters that have served these properties for decades.

For these homes, a tankless water heater upgrade does more than deliver on-demand hot water. It also eliminates the standby heat losses of a storage tank sitting in an older, often less-insulated basement or utility space. According to the U.S. Department of Energy, homes that use 41 gallons or less of hot water daily can save 24 to 34 percent on water heating energy costs by switching to a tankless system. For Hammond’s long-term homeowners, many of whom have lived in their properties for years and face aging systems across multiple categories, a tankless water heater is one of the highest-value plumbing upgrades available.

The flat terrain of Lake County also means that Hammond’s cold groundwater temperatures, particularly in late fall through early spring, require tankless systems sized for the larger temperature rise needed to deliver comfortable hot water. Reichelt Plumbing accounts for Hammond’s seasonal groundwater conditions in every tankless system sizing calculation to ensure consistent performance year-round.

What Is a Tankless Water Heater and How Does It Work

A tankless water heater heats water directly as it flows through the unit, without storing any water in a tank. When a hot water fixture opens, cold water travels into the unit where a gas burner ignites to heat it instantly through a heat exchanger. The unit shuts off automatically when the flow stops. The result is a continuous supply of hot water for as long as the fixture runs, with no tank that can run empty mid-shower and no standby energy lost to keeping stored water warm around the clock.

Two primary types are available for Hammond residential use. Non-condensing tankless units operate at efficiencies typically in the low-to-mid 80 percent range and vent hot exhaust gases directly through a flue. Condensing tankless units recover heat from the exhaust gases before venting, achieving efficiencies of 90 percent and above, and produce a small amount of condensate that requires proper drainage. Reichelt Plumbing installs both types and recommends based on each Hammond home’s specific configuration, gas supply, and venting conditions.

Tankless Water Heater Services We Provide in Hammond, IN

New Tankless Water Heater Installation

Reichelt Plumbing installs whole-home gas tankless water heater systems for new construction and properties upgrading from a conventional tank for the first time. Every Hammond installation begins with a proper sizing assessment, evaluating the household’s peak hot water demand, the number and type of simultaneous fixtures, and the home’s incoming water temperature. We install Navien, Bradford White, AO Smith, and State systems and coordinate required permits through the City of Hammond. See our hot water heater service overview for the full range of water heater services Reichelt Plumbing provides.

Tank-to-Tankless Water Heater Conversion

Converting from a traditional storage tank to a tankless system in an older Hammond home involves more than swapping the unit. Our team removes the old tank, evaluates the existing gas supply line to confirm it can support the higher BTU input of a tankless system, installs proper venting, addresses condensate drainage if the new unit is a condensing model, and confirms the cold water inlet pressure meets manufacturer specifications. Many Hammond homes built before 1960 require a gas line upgrade as part of the conversion, which our licensed technicians handle within the same scope.

Tankless Water Heater Repair

When a tankless unit displays an error code, produces fluctuating temperatures, fails to ignite, or delivers inconsistent hot water output, Reichelt Plumbing diagnoses and repairs the problem. Our technicians are trained on Navien, Bradford White, AO Smith, and State systems and carry common replacement parts to reduce the need for return trips. Hammond homeowners experiencing any loss of hot water performance should call rather than attempt internal component repairs on a unit connected to a gas supply.

Tankless Flushing, Descaling, and Annual Maintenance

Annual flushing removes mineral scale that accumulates on the heat exchanger surfaces from Northwest Indiana water. Left unaddressed, scale reduces efficiency, causes the unit to work harder, and eventually triggers error codes or reduces flow. Maintenance appointments also include inspection of the inlet filter screen, burner assembly check, pressure relief valve testing, venting inspection, and condensate drainage verification for condensing models.

Gas Line Sizing and Upgrades for Tankless Systems

Many Hammond homes built in the 1940s and 1950s have gas supply lines originally sized for the lower BTU appliances of that era. A modern whole-home gas tankless water heater requires more fuel supply than a conventional tank unit, and an undersized gas line produces cold water from what should be a fully capable system. Reichelt Plumbing evaluates gas line capacity as part of every tankless consultation in Hammond and performs required upgrades to ensure proper performance from day one.

Commercial Tankless Water Heater Service in Hammond

Hammond restaurants, medical offices, commercial laundry operations, and other businesses with high and concentrated hot water demand benefit from commercial tankless systems sized for their specific load. Reichelt Plumbing installs and services commercial tankless water heater systems throughout Hammond and handles all commercial permitting and inspections. Our commercial plumbing construction services include the full scope of commercial water heater scope for Hammond properties.

Common Tankless Water Heater Issues in Hammond Homes

• Mineral scale accumulation on the heat exchanger, particularly common in homes on Hammond’s municipal water system
• Gas supply line undersizing in older Hammond homes, producing inadequate BTU delivery and poor hot water output
• Cold water sandwich effect, a brief burst of cool water between hot water uses, addressable with a recirculation system
• Fluctuating temperatures from a flow sensor issue, clogged inlet screen, or simultaneous high-demand appliance use
• Ignition failure from a dirty burner, gas supply interruption, or sensor fault
• Error codes specific to Navien, Bradford White, AO Smith, or State systems requiring trained diagnosis
• Condensate drainage blockages in condensing units installed without adequate drainage routing

Benefits of Tankless Water Heaters for Hammond Homeowners

• Continuous hot water supply with no tank to run empty, important for larger Hammond households with multiple bathrooms
• Energy savings of 24 to 34 percent over conventional tanks for average-use households, per U.S. Department of Energy data
• Longer equipment lifespan of 20-plus years compared to 8 to 12 years for storage tank units
• Significant space savings, particularly valuable in Hammond’s older homes where utility space is limited
• Elimination of standby heat loss from a tank sitting idle in a basement or utility room
• Available in condensing models with 90-plus percent efficiency ratings for maximum energy savings

Our Tankless Water Heater Process in Hammond

• Initial assessment. We evaluate your household’s hot water demand, peak simultaneous fixture use, groundwater temperature, existing gas line capacity, and available venting to properly size and specify the right system for your Hammond home.
• Permit application. Reichelt Plumbing pulls all required permits with the City of Hammond before installation begins. We handle all permit paperwork so homeowners do not need to manage that process.
• Installation. Our licensed technicians install the selected unit, complete all gas, water, and venting connections, install condensate drainage if needed, and confirm every connection meets Indiana plumbing code requirements.
• Testing and verification. We run the system through a full operational test, confirm the temperature output at multiple fixtures, check for error codes, and verify that all venting and drainage are performing correctly.
• Permit inspection coordination. We schedule and coordinate the required city inspection and ensure the installation receives sign-off before considering the job complete.
• Owner orientation. We walk the Hammond homeowner through the system controls, explain the annual maintenance requirements, and answer any questions about operating the new unit.

Permit and Licensing Requirements for Tankless Installation in Hammond, IN

Indiana state law requires that all water heater installations be performed by or under the direct supervision of a licensed plumber, as governed by the Indiana Professional Licensing Agency. The City of Hammond also requires a building permit for water heater installation and replacement. Tankless water heater installations involving new gas line work may require additional permits or inspections. Reichelt Plumbing coordinates all permit applications, inspections, and sign-offs for Hammond installations as a standard part of the service. Indiana’s building codes also require proper venting and, for condensing units, appropriate condensate drainage in accordance with current code standards.

Why Hammond, IN Homeowners Choose Reichelt Plumbing for Tankless Water Heater Service

Areas Near Hammond We Also Serve

In addition to Hammond, Reichelt Plumbing provides tankless water heater services in Schererville, IN, Highland, IN, Munster, IN, Griffith, IN, Dyer, IN, Saint John, IN, Crown Point, IN, Hobart, IN, Merrillville, IN, Gary, IN, Lansing, IL, Chicago Heights, IL, Calumet City, IL, South Holland, IL, and surrounding Northwest Indiana and South Cook County communities.

Related services: Hot Water Heater Services | Emergency Plumbing | Sewer Pumps and Ejector Pump Service | Drain Cleaning | Hammond Plumbing Services

FAQs About Tankless Water Heaters in Hammond, IN

What is a tankless water heater and how does it work?

A tankless water heater, also called an on-demand or instantaneous water heater, heats water directly as it flows through the unit without storing any in a tank. When a hot water tap opens, cold water travels through a heat exchanger inside the unit where either a gas burner or electric elements heat it instantly. The result is a continuous supply of hot water without the standby energy losses of a traditional tank.

What are the main benefits of a tankless water heater for Hammond homes?

Tankless systems deliver a continuous supply of hot water, so Hammond households with multiple bathrooms or high hot water demand never run out mid-shower. They also eliminate standby heat loss since no stored water sits losing heat around the clock, they occupy significantly less space than a tank unit, and they typically last 20 or more years compared to 8 to 12 years for a traditional tank.

How much energy can a tankless water heater save in Hammond?

According to the U.S. Department of Energy, homes that use 41 gallons or less of hot water daily can expect energy savings of 24 to 34 percent compared to a conventional storage tank water heater. Homes with higher hot water demand that install a tankless unit at every major point of use can achieve savings of 27 to 50 percent. Hammond’s older homes, many of which have aging tank water heaters losing heat through poorly insulated spaces, stand to benefit most from an upgrade.

What brands of tankless water heaters does Reichelt Plumbing install in Hammond?

Reichelt Plumbing installs Bradford White, Navien, AO Smith, and State brand tankless water heater systems for Hammond homes and businesses. Each brand offers a range of whole-home gas tankless systems. Our technicians help Hammond homeowners select the model that matches their household’s actual hot water demand, flow rate requirements, and available gas supply capacity.

What is the difference between a condensing and non-condensing tankless water heater?

A condensing tankless water heater captures and reuses the heat from exhaust gases before venting them, achieving efficiency ratings of 90 percent and above. It also produces condensate, an acidic liquid byproduct, that requires proper drainage. A non-condensing unit vents hot exhaust gases directly and operates at somewhat lower efficiency. Condensing systems are generally preferred in Hammond for maximum energy savings but require condensate drainage planning, which our technicians handle as part of every installation.

Can I convert my traditional tank water heater to a tankless system in my Hammond home?

Yes. Reichelt Plumbing performs tank-to-tankless conversions throughout Hammond. The process involves removing the old storage tank, properly sizing the new unit for your home’s flow demand, evaluating the existing gas line to confirm it can support the higher BTU input a tankless system requires, installing proper venting, and handling any condensate drainage needs. Older Hammond homes built before 1960 sometimes require a gas line upgrade to supply adequate fuel for a tankless unit.

Does a tankless water heater installation require a permit in Hammond, IN?

Yes. Indiana requires a permit for water heater installation, and all plumbing work in Hammond must be performed by or under the supervision of a licensed plumber as required by the Indiana Professional Licensing Agency. Reichelt Plumbing coordinates all permit applications and inspections for Hammond tankless installations so homeowners do not need to manage that process separately.

How long does a tankless water heater typically last?

Tankless water heaters are designed to last 20 years or more with proper annual maintenance. This compares favorably to conventional storage tank water heaters, which average 8 to 12 years of reliable service. Hammond homeowners who switch from a tank to a tankless system often get significantly more total service life from their investment.

What is the cold water sandwich effect and why does it happen?

The cold water sandwich is a brief burst of cold or lukewarm water that occurs when someone uses hot water shortly after a previous use has ended. When the first person stops running hot water, warm water remains in the pipes. When the second person turns on hot water, they first receive that warm water from the pipes, then a short burst of cold water while the tankless unit fires back up, followed by fully heated water. A hot water recirculation system can minimize this effect in Hammond homes where it is noticeable.

Can my existing gas line support a tankless water heater in my older Hammond home?

Many Hammond homes built in the 1940s and 1950s have undersized gas supply lines originally designed for appliances of that era. A whole-home tankless water heater typically requires a larger gas supply than a traditional tank unit. Reichelt Plumbing evaluates the existing gas line size, supply pressure, and total BTU load of all connected appliances before recommending a tankless system, and our team upgrades the gas supply line when needed as part of the installation scope.

What causes scaling inside a tankless water heater?

Mineral deposits, primarily calcium and magnesium, accumulate on the heat exchanger surfaces inside a tankless unit over time. Northwest Indiana municipal water sources contain moderate mineral levels that contribute to this buildup. Scale reduces heat transfer efficiency, causes the unit to work harder, and eventually causes error codes or reduced flow. Annual flushing with a descaling solution dissolves mineral buildup and restores full performance.

How often should a tankless water heater be flushed and maintained in Hammond?

Annual flushing and descaling is recommended for Hammond tankless water heaters to prevent mineral buildup on the heat exchanger, maintain efficiency, and extend equipment life. During a maintenance visit, Reichelt Plumbing also inspects the burner assembly, checks the inlet filter screen, tests the pressure relief valve, and confirms proper venting and condensate drainage if applicable.

What is a hot water recirculation pump and do I need one with a tankless system?

A recirculation pump keeps hot water circulating through the hot water lines so that hot water is immediately available at any fixture without waiting for the unit to heat a new stream. This is especially beneficial in larger Hammond homes where the distance from the tankless unit to certain fixtures is significant. A dedicated return line or a crossover valve setup can be used depending on the home’s existing plumbing layout.

What causes fluctuating water temperatures in a tankless system?

Temperature fluctuations can result from a gas pressure issue, a faulty flow sensor that cannot accurately detect the incoming water flow rate, a partially clogged filter screen, or a unit that is undersized for the simultaneous hot water demand of the household. In older Hammond homes with variable municipal water pressure, pressure regulators or additional flow balancing may help stabilize performance.

Can a single tankless water heater supply an entire Hammond home?

Yes. A properly sized whole-home gas tankless water heater can supply hot water for a full Hammond household. Sizing depends on the peak simultaneous demand, calculated by adding the flow rates of all fixtures that may run at the same time, and the temperature rise required based on Hammond’s incoming groundwater temperature. Our technicians size each system based on the specific household’s needs rather than applying a one-size approach.

Do tankless water heaters work during a power outage in Hammond?

Most gas tankless water heaters require electricity to operate the ignition, controls, and display. They will not function during a power outage unless the home has a generator or backup power source. If power reliability is a concern, this is worth discussing when selecting a model.

How long does a tankless water heater installation take in Hammond?

A replacement of a similar unit typically takes 2 to 4 hours. A full conversion from a tank system to a new tankless installation, which may involve gas line work, new venting, and condensate drainage, generally takes 4 to 8 hours depending on the existing conditions in the home. Our technician provides a realistic time estimate before beginning work.

Do you service commercial tankless water heaters in Hammond?

Yes. Reichelt Plumbing installs and services commercial tankless water heater systems for Hammond restaurants, office buildings, medical facilities, and other commercial properties. Commercial systems are sized for the higher and more concentrated demand of commercial operations. We also coordinate required commercial permits and inspections.

What error codes commonly appear on tankless water heaters?

Common error codes vary by manufacturer but typically indicate issues such as ignition failure, overheating, flow sensor errors, gas supply problems, or blocked venting. Our technicians are trained on Bradford White, Navien, AO Smith, and State systems and can diagnose and resolve error codes for Hammond homeowners.

Is a tankless water heater a good fit for older Hammond homes built in the 1950s?

Older Hammond homes built around the median construction year of 1952 can be excellent candidates for a tankless upgrade, but the installation requires a careful evaluation of the gas supply line capacity, venting options, and any condensate drainage requirements. Many of these homes also benefit from a gas line upgrade as part of the conversion. Reichelt Plumbing has extensive experience working in Hammond’s older housing stock and can identify all required scope during an initial assessment.

What is a tankless water heater point-of-use unit?

A point-of-use tankless water heater is a small unit installed close to a single fixture, such as a kitchen sink or bathroom that is far from the main water heater. These units provide instant hot water to that fixture without waiting for the water to travel from the whole-home unit. They can be gas or electric and are often used in Hammond homes where one remote fixture has long wait times for hot water.

What is the annual maintenance process for a tankless water heater?

Annual tankless maintenance includes flushing and descaling the heat exchanger with a food-grade descaling solution circulated through the unit, inspecting and cleaning the inlet filter screen, checking the burner assembly and igniter, testing the temperature and pressure relief valve, verifying proper venting condition, and inspecting condensate drainage if the unit is a condensing model.

Can I get coupon savings on tankless water heater service in Hammond?

Yes. Reichelt Plumbing offers current coupon savings on qualifying water heater service in Hammond. Current offers are available on our 

What should I do if my tankless water heater stops producing hot water?

Check that the unit has power and that the gas supply valve is open. Look for any error codes on the display and note the code. If the unit has a filter screen, check whether it is clogged and clean it if needed. If these steps do not resolve the issue, call Reichelt Plumbing at (219) 322-4906 for service in Hammond. Do not attempt to repair internal components or the gas line without a licensed plumber.

How do I schedule tankless water heater installation or service in Hammond, IN?

Call Reichelt Plumbing at (219) 322-4906 to schedule tankless water heater installation, repair, maintenance, or consultation in Hammond. We serve Hammond and surrounding Lake County communities including Highland, Munster, Griffith, Schererville, Dyer, and others. Emergency same-day service is available 24/7 when an immediate hot water problem cannot wait.

BBB Accredited A+ since 1986 · Google Reviews · HomeAdvisor · Facebook Reviews · Coupon Savings · 451 Winston Court STE A, Schererville, IN 46375 · Serving Hammond and all of Northwest Indiana.