Why Realtors Should Remind Clients to Flush Their Tankless Water Heater

Overview:

Tankless Systems Have Been on the Rise Since 2014

In California, tankless water heaters have become more common over the past decade. A big reason is Title 24 energy efficiency standards, which were updated in 2014 and encouraged builders and homeowners to move away from older, less efficient tank-style units. At the same time, rebates from utilities and growing consumer awareness about saving energy and water made tankless systems a natural choice.

Today, it’s not unusual for buyers to expect a tankless water heater in their new home or for sellers to highlight one as a selling feature. But here’s what many homeowners don’t know: while tankless systems are efficient, they require regular flushing to perform the way they should.


Why Flushing Tankless Systems Matters

  1. Hard water makes California a tough environment

    Most regions in California have hard water. That means mineral buildup (scaling) happens fast. Inside a tankless system, scaling coats the heat exchanger and narrows water flow, which can lead to weak hot water pressure, system errors, or complete breakdowns if ignored.
  2. Efficiency depends on it

    Tankless systems are designed to cut energy costs, but sediment buildup forces the system to work harder. A neglected system loses efficiency and cancels out the very reason most people chose tankless in the first place.
  3. It protects compliance and resale

    Since 2014, California inspectors and appraisers have been looking at energy efficiency more closely during transactions. A well-maintained tankless system reassures buyers, while a neglected one can show up on an inspection report and become a sticking point in negotiations.
  4. Maintenance saves thousands

    Replacing a tankless water heater can cost $3,000–$5,000. A professional flush normally costs from $150–$350 depending on the service provider. Regular flushing keeps the system working properly for years, which protects both the homeowner’s wallet and long-term property value.

What Realtors Should Tell Their Clients

  • Annual flushing is standard. Once per year is the minimum. Homes with extremely hard water or older tankless units may need flushing every six months. Homes with a water softener can usually extend the time in between flushes.
  • Tankless does not mean maintenance-free. Many buyers assume “tankless” means “set it and forget it.” They need to know that’s not the case.
  • Service records matter. Just like HVAC tune-ups, showing proof of regular flushing can help sellers during disclosures and give buyers peace of mind.

How Realtors Can Stand Out

  • Include “Annual Tankless Flush” on your buyer handouts or new homeowner checklists.
  • During listing prep or walkthroughs, ask the seller when the last flush was done. If they don’t know, recommend it before inspection.
  • Build trust by pointing clients to a professional service company. That small referral cements your role as a problem-solver, not just a transaction closer.

The Bottom Line

Tankless water heaters have been part of California homes for more than a decade, thanks to 2014 efficiency standards and rebates that made them attractive upgrades. They’re smart investments, but only if they’re maintained. A simple flush once a year protects efficiency, extends the system’s life, and keeps inspectors — and buyers — happy. Realtors in Riverside County trust us to keep their clients’ homes in top shape. Schedule a flush today and show your clients the difference proactive maintenance makes.

Final Takeaway


A water heater flush is a small, affordable step that saves homeowners from big headaches down the road. By reminding your clients, you strengthen your role as a trusted resource, protect their investment, and even increase future resale value.

Realtors trust us to keep their clients’ homes in top shape. We’re offering a great discount for first- time customers, so schedule with Joel at Royal Flush today and show your clients the difference proactive maintenance makes.

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