How Often Should A Tankless Water Heater Be Flushed?

Tankless water heaters require regular maintenance to operate efficiently and reliably.

One of the most important maintenance procedures is flushing the heat exchanger to remove mineral buildup.

Many homeowners are surprised to learn that skipping routine flushing can shorten equipment life, reduce efficiency, and lead to costly repairs.

How Often Should A Tankless Water Heater Be Flushed?

Most manufacturers recommend flushing a tankless water heater every 12 months.

However, homes with hard water may require more frequent maintenance.

Factors that affect flushing frequency include:

• Water hardness

• Water usage

• Household size

• Presence of a water softener

• Manufacturer recommendations

In Central Indiana, hard water is common, making annual maintenance especially important.

What Happens If You Don't Flush A Tankless Water Heater?

Over time, minerals accumulate inside the heat exchanger.

This buildup can cause:

• Reduced efficiency

• Longer wait times for hot water

• Inconsistent temperatures

• Increased energy usage

• Error codes

• Premature component failure

Ignoring maintenance often leads to higher repair costs later.

Signs Your Tankless Water Heater Needs Flushing

Common warning signs include:

• Reduced hot water output

• Longer heating times

• Temperature fluctuations

• Strange noises

• Error codes

• Reduced efficiency

Even if no symptoms are present, annual maintenance is still recommended.

Does A Water Softener Eliminate The Need For Flushing?

No.

A water softener can reduce mineral buildup, but most tankless manufacturers still recommend periodic maintenance and inspection.

Softened water may allow longer service intervals, but it does not eliminate maintenance requirements.

What Is Included In A Tankless Water Heater Flush?

A professional tankless flush may include:

• Heat exchanger descaling

• Filter cleaning

• Water pressure inspection

• Venting inspection

• Condensate inspection

• General system evaluation

Routine maintenance helps identify small problems before they become major repairs.

Why Indianapolis Homeowners Choose Hot Water Pros

Hot Water Pros specializes in tankless water heater maintenance, repair, and installation.

We provide:

• Tankless flushing

• Navien maintenance

• Water pressure testing

• System diagnostics

• Upfront pricing

• Same-day service when available

We proudly serve Indianapolis, Carmel, Fishers, Westfield, Noblesville, Greenwood, Brownsburg, Whitestown, and Zionsville.

Schedule Your Tankless Water Heater Flush

Annual maintenance is one of the best ways to protect your investment and keep your tankless water heater operating efficiently.

Call Hot Water Pros at 317-922-9043 to schedule professional tankless water heater maintenance.