Tankless water heaters have changed the way we enjoy hot water by providing an on-demand supply without the need for a large storage tank. However, maintaining that efficiency requires regular flushing of the unit. Over time, mineral buildup and sediment can accumulate. This affects the heater’s performance and lifespan. Whether you opt to flush your unit yourself or hire a professional, regular maintenance helps make sure you get the best from your tankless water heater.
Why You Should Flush Your Tankless Water Heater
Flushing your tankless water heater is essential to remove mineral buildup, particularly calcium and magnesium deposits. These elements can clog the internal components and reduce efficiency. This buildup can lead to issues like decreased water pressure, delayed hot water delivery, and even error codes from the heater.
Neglecting this important maintenance task can lead to reduced efficiency, increased energy costs, and even damage to the unit. Flushing the unit regularly can help you preserve its efficiency, extend its lifespan, and reduce the risk of unexpected breakdowns.
Benefits of Regular Tankless Water Heater Flushing
- Improves Efficiency: Regular flushing removes sediment that impairs the unit's ability to heat water efficiently.
- Extends Lifespan: By eliminating harmful mineral buildup, you reduce the wear and tear on internal components.
- Prevents Breakdowns: Avoid costly repairs by addressing buildup before it causes major issues.
- Energy Savings: A clean system uses less energy, lowering your utility bills.
Signs It’s Time to Flush Your Tankless Water Heater
Knowing when to flush your tankless water heater is essential. Most manufacturers recommend an annual flush. However, in areas with hard water, you may need to flush it more frequently. Signs that it's time to flush your unit include:
- Decreased water pressure: Mineral deposits can clog your system, reducing water flow.
- Longer wait times for hot water: If it’s taking longer than usual for hot water to reach your faucet, buildup may be affecting the heating process.
- Error codes: Many modern units will display error codes when buildup affects the heater’s functionality.
How Often Should You Flush?
The frequency of flushing depends on your water quality. In areas with hard water, flushing every 3 to 6 months is ideal. For households with softer water, an annual flush should suffice. Here's a general guide:
- Soft Water (0-60 ppm): Flush once a year.
- Moderate Hardness (61-120 ppm): Flush every 6-8 months.
- Hard Water (121-180 ppm): Flush every 4-6 months.
- Very Hard Water (180+ ppm): Flush every 3-4 months.
If you're unsure about your water hardness, a local water utility or a home testing kit can help you determine your needs.
Step-by-Step Guide to Flushing Your Tankless Water Heater
Flushing your tankless water heater is a straightforward process that you can do yourself with the right tools. Here’s how:
Step 1: Turn Off Power and Gas Supply
For safety, turn off the power and gas supply to your tankless water heater before starting the flushing process.
Step 2: Locate the Isolation Valves
These are typically found on the cold water inlet and hot water outlet pipes. Close both valves to stop the flow of water into the unit.
Step 3: Attach a Hose
Attach a hose to the cold-water isolation valve and place the other end into a bucket or drain to catch any debris and water.
Step 4: Open a Hot Water Tap
Open a hot water tap in your home to allow air into the system and help with the flushing process.
Step 5: Flush the System
Open the cold-water valve to allow water to flow through the unit, flushing out mineral buildup. Let the water run for about 30 minutes, or follow your manufacturer’s specific recommendations.
Step 6: Reassemble and Test
After flushing, turn the valves back to the open position, restore power, and check for proper operation. Turn on a hot water tap to guarantee that the heater is functioning correctly.
DIY vs. Professional Flushing: What’s Right for You?
When deciding whether to flush the heater yourself or hire a professional, consider the challenges of the task and your comfort level. Both options have advantages and disadvantages:
DIY Flushing
If you’re handy with tools and have some plumbing knowledge, flushing the heater yourself can save you money. All you need is a tankless water heater flushing kit, which typically includes a hose, a pump, and a vinegar solution. However, if not done properly, a DIY flush can result in damage or void your heater’s warranty.
Professional Flushing
Hiring a professional to flush your tankless water heater costs between $150 and $250. However, this makes sure the job is done thoroughly and correctly. Professionals have the expertise to identify any potential issues during the flush and can often spot warning signs of future problems that a homeowner might miss.
Benefits of Hiring a Professional for Water Heater Maintenance
If you decide to hire a professional, you gain several advantages. This in cludes peace of mind that the flush will be done correctly. Additionally, a professional can spot any hidden issues, such as corrosion or damage to internal parts. Here are key reasons to consider professional help:
- Expertise: A trained technician guarantee the job is done right.
- Time-Saving: Professionals can complete the process more efficiently.
- Warranty Protection: A pro will follow manufacturer guidelines, preserving your warranty.
- Safety: Flushing a gas water heater involves handling gas lines, which can be dangerous if not done correctly.
Cleaning and Replacing Filters During Flushing
Flushing your tankless water heater is also an ideal time to clean or replace the unit’s filters. The in-line water filter prevents sediment from entering the unit and should be cleaned every 6-12 months, depending on water quality. The air filter prevents dust from clogging the system. It should be checked and cleaned every 3-6 months.
To clean the filters:
- Turn off power and gas.
- Remove and rinse the filters with water.
- Reinstall the filters and restore power.
Restarting Your Tankless Water Heater After Flushing
Once the flush is complete, follow these steps to restart your unit:
- Reassemble: Close the drain valve and reconnect any removed components.
- Open Isolation Valves: Gradually open the cold-water valve, then the hot-water valve.
- Restore Power and Gas: Turn the power back on and relight the gas burner if necessary.
- Check for Proper Operation: Test the system by turning on a hot water tap.
The Importance of Regular Maintenance
Flushing your tankless water heater is just one part of regular maintenance. However, it's essential for guaranteeing the longevity of the unit. Regular maintenance helps avoid expensive repairs or the need for premature replacements. In addition to flushing, inspect the filters, check for leaks, and monitor performance to maintain your system is functioning efficiently.
Trust Water Heaters Now for Your Tankless Water Heater Needs
If DIY maintenance feels overwhelming or you’d prefer the assurance of professional care, Water Heaters Now is here to help. We specialize in tankless water heater services, including flushing, installation, and repair.
With our team of professionals, you can make sure your water heater is functioning efficiently year-round. We serve residential and commercial customers across the Greater Twin Cities Area and offer 24/7 emergency service for any urgent water heater needs.
Regularly flushing your tankless water heater is vital to maintain its efficiency, extend its lifespan, and reduce energy costs. Whether you choose to flush it yourself or hire a professional, the key is consistent maintenance to avoid potential problems. Trust us to keep your system in top condition and provide reliable hot water for years to come.
