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Reliable Tankless Water Heater Repair & Replacement in Indianapolis, IN

What Your Neighbors Are Saying About Us

Stephen S.
Chris and Bryan from Kight’s Quality Air stopped by on-time this morning to get my AC working again. They both did a great job servicing and repairing the system. I will certainly ask for their help again in the future. We have a comfortable house again!
Lindsey S.
I greatly appreciate the quick reply and completion of the repair needed. Aaron was very honest and gave us thorough detail. I will definitely keep Kight's Quality Air in mind my for future needs!
Cheyanne B.
Michael came out to my home to help fix my water heater. He drained it, made sure it was properly cleaned and then set it back up and made sure all was good and explained in detail about what's going on and what next steps to take if need be! Really helpful and really kind guy!
Tania P.
Very professional and knowledgeable. Presented us with all the information we needed to make the best decision for our home with no pressure at all and we feel the pricing was very reasonable. Would highly recommend to anyone.
Christine S.
Just finished a follow up visit Kights performed on our new furnace, as always there was a text notifying they were on there way which is professional and appreciated. I highly recommend using Kights Quality Air. Wonderful, efficient staff and excellent price.

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When your tankless water heater stops working right, it throws off your whole day. At Kight’s Quality Air Conditioning & Heating Repair, we help Indianapolis homeowners get their hot water back fast with honest diagnostics, reliable repairs, and straightforward replacement options when the time comes. Whether your unit is throwing error codes, running inconsistently, or has finally given out, our team is ready to help you figure out the best path forward without the runaround.

Our HVAC Services

When Your Tankless Water Heater Is Trying to Tell You Something

If your tankless water heater is acting up, it usually gives you a few warning signs before things get worse. Catching those signs early can save you from a cold shower and a bigger repair bill down the road. Here are some things to watch for:

  • Your hot water runs inconsistently or cuts out without warning.
  • You notice a drop in water pressure when hot water is running.
  • The unit is displaying an error code, or the indicator light is flashing.
  • You hear unusual noises like popping, banging, or hissing coming from the unit.
  • Your energy bills have gone up without a clear reason.
  • The water coming out smells foul or looks discolored.
  • The system is taking much longer than usual to produce hot water.

Indianapolis winters can push your water heater to work harder than it would in milder climates. When temperatures drop significantly, the incoming groundwater is colder, which means your unit has to work overtime to heat it to your desired temperature. That extra strain can accelerate component wear, making regular attention especially important for local homeowners.

Common Reasons Tankless Water Heaters Break Down

Tankless water heaters are built to last, but they are not without their share of issues. Understanding what typically goes wrong can help you know what you are dealing with before a technician arrives.

  • Mineral buildup: Indianapolis has moderately hard water, and over time, minerals such as calcium and magnesium can accumulate in the heat exchanger, reducing efficiency and causing damage.
  • Ignition or flame failure: If the unit cannot ignite or the flame goes out mid-cycle, you will lose all hot water.
  • Venting problems: Blocked or improperly sized vents can cause the system to shut down as a safety measure.
  • Cold-water sandwich effect: This happens when a short burst of cold water flows through between uses, a common quirk with tankless systems that a technician can often address.
  • Overloaded system: Running too many hot water demands at once can cause the unit to underperform or shut off.

Worn or faulty components: Flow sensors, thermistors, and other internal parts can wear out over time and need replacing.

When your unit isn’t working the way it should, our team gets to the root of the problem rather than just patching over symptoms. We work on both gas and electric tankless water heaters and handle a wide range of repairs, including:

  • Diagnosing and clearing error codes
  • Replacing heat exchangers and ignitors
  • Flushing and descaling the system to remove mineral buildup
  • Repairing or replacing flow sensors and thermistors
  • Fixing venting and exhaust issues
  • Restoring proper gas pressure or electrical connections
  • Addressing inconsistent water temperature or low flow concerns

We use quality parts and back our work so that you can feel good about the repair lasting.

Tankless Water Heater Repairs We Handle

Tankless Water Heater Replacement and New Installations

Sometimes a repair is not the most practical path forward, especially if your unit is aging, has had repeated issues, or is no longer efficient enough to meet your household’s needs. When it is time for a replacement, we help you find the right unit and get it installed correctly.

We size the system to match your home’s hot water demand so you are not overpaying for capacity you do not need or underpowered when it matters most. Proper installation also matters a great deal in Indianapolis, where seasonal temperature swings can affect system performance. A well-installed unit runs more efficiently and lasts longer.

We install trusted brands and offer flexible financing options for qualifying customers, so upgrading to a new tankless system does not have to be a financial headache.

A failing water heater does not always wait for a convenient time to break down. If you wake up to no hot water or notice a leak coming from your unit, do not wait it out. We offer emergency repair services to get your system back up and running when you need it most.

Whether it is a weekend, a holiday, or the middle of a cold Indianapolis night, our team is ready to help.

Emergency Tankless Water Heater Service in Indianapolis

Kight's Quality Air Conditioning & Heating Repair

Why Indianapolis Homeowners Trust Kight's for Tankless Water Heater Service

At Kight’s Quality Air Conditioning & Heating Repair, we are a family-owned company with real roots in this community. We are not a large corporate operation that treats you like a ticket number. When you call us, you get honest answers, fair pricing, and a team that genuinely wants to solve your problem.

Here is what you can expect when you work with us:

We know Indianapolis homeowners have options, and we work hard to be the team you call first and come back to.

Frequently Asked Questions

How long does a tankless water heater typically last?

With proper maintenance, most tankless water heaters last between 15 and 20 years, which is generally longer than traditional tank-style units.

In Indianapolis, where water hardness can contribute to mineral buildup, flushing your tankless water heater once a year is a good rule of thumb to keep it running efficiently.

It depends on the unit’s age, the cost of the repair, and how often it has needed service. We are happy to walk you through the options honestly so you can make the call that makes the most sense for your home.

Yes, as long as it is properly sized for your home’s hot water demand. We take the time to assess your household’s needs before recommending a unit.

Yes, we offer flexible financing options for qualifying customers, so you can move forward with a replacement without straining your budget.

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