10 Ways to Extend the Lifespan of Your Tankless Water Heater

Nothing ruins a morning faster than a sudden blast of cold water when you expected a warm, relaxing shower. For most Ontario homeowners, the water heater quietly does its job day after day — until it doesn’t. When that happens, it’s not only inconvenient but can also mean costly repairs or premature replacement.

The good news is that with a few smart habits, your tankless water heater can provide reliable, efficient hot water for 20 years or more. At The Tankless, our technology is specifically designed to handle Ontario’s hard-water conditions and deliver lasting performance.

Here are ten simple but effective ways to keep your tankless system running at its best for years to come.

1. Schedule Annual Professional Maintenance

Even though tankless systems require less maintenance than traditional tanks, an annual inspection helps ensure optimal performance. A licensed technician can check the gas pressure, clean burners, test sensors, and confirm that airflow and venting are clear.

Think of it like a yearly check-up for your home’s hot-water system. Small tune-ups prevent bigger issues later and help your heater maintain peak efficiency all year long.

The Tankless’s trained technicians specialize in tankless systems and can handle all inspections with precision and care.

2. Use Built-In Scale Prevention Technology

Ontario’s hard water is packed with minerals that can damage internal components over time. These minerals form limescale on the heat exchanger, reducing heating efficiency and increasing energy consumption.

That’s where AquaShield™ ScaleGuard, built into The Tankless, makes all the difference. This patented technology prevents scale before it starts, protecting the heat exchanger from buildup and saving you from costly descaling. Most homeowners save $250 to $350 per year in maintenance costs thanks to AquaShield™.

3. Keep Air Intake and Exhaust Vents Clear

Tankless units rely on efficient airflow. If the venting becomes obstructed by dust, lint, or snow, the heater must work harder and may even shut down as a safety measure.

Make it a habit to inspect the outdoor vent openings a few times per year, especially during winter. Keeping them clear ensures efficient combustion, prevents system lockouts, and extends the unit’s lifespan.

4. Maintain Steady Water Flow

A tankless system depends on continuous water flow to activate heating. Blocked aerators or showerheads can restrict flow and cause inconsistent temperatures.

Check your faucets regularly and clean any buildup on showerheads. A strong, steady flow ensures your system performs smoothly and consistently.

5. Protect Against Freezing Temperatures

Even though tankless heaters are compact and durable, they can still be affected by extreme cold. For outdoor installations or garage setups, make sure the pipes are insulated and the vents are shielded from frost.

The Tankless models feature built-in freeze protection, but an insulated environment further ensures reliable operation during Ontario’s harsh winters.

6. Flush Only When Necessary

Traditional water heaters need frequent flushing because sediment collects at the bottom of the tank. Tankless systems heat water as it flows, so buildup is minimal.

If your unit doesn’t include AquaShield™ protection, occasional flushing may still help remove trace minerals. However, with The Tankless, this step is rarely required, as the system continuously prevents scale formation internally.

7. Monitor Your Digital Display

Modern tankless units include digital diagnostic displays that show temperature, flow, and error alerts. Checking these indicators helps you detect any issues early.

The SmartFlow™ Digital Display in The Tankless provides real-time insights such as water temperature, pump activity, and flame presence. A quick glance can confirm your unit is performing as expected.

8. Install a Water Filter or Softener for Added Protection

Even with AquaShield™ protection, a whole-home water filter or softener can further reduce sediment and mineral buildup. It’s a simple way to enhance efficiency and extend the lifespan of your tankless system.

This upgrade is especially helpful in cities like Kitchener, Waterloo, or Vaughan, where mineral levels are among the highest in Ontario.

9. Give Your Tankless System Breathing Room

Tankless units need open space around them to operate efficiently. Avoid storing boxes, laundry, or cleaning supplies near the unit.

Good airflow reduces strain on the system and allows easier access for technicians during maintenance visits. A clear installation area contributes to a safer and longer-lasting heater.

10. Use It Regularly and Choose the Right Model

Tankless systems work best when used consistently. Regular usage keeps the sensors, burners, and internal components active and responsive.

Select the model that matches your home’s size and hot-water needs. The InfinityFlow™ model is ideal for larger families and homes with multiple bathrooms, while PureFlow™ offers reliable performance for smaller households. Choosing the right fit from the start reduces wear and maximizes longevity.

Bonus: Professional Installation Makes All the Difference

Tankless systems work best when used consistently. Regular usage keeps the sensors, burners, and internal components active and responsive.

Select the model that matches your home’s size and hot-water needs. The InfinityFlow™ model is ideal for larger families and homes with multiple bathrooms, while PureFlow™ offers reliable performance for smaller households. Choosing the right fit from the start reduces wear and maximizes longevity.

The Tankless Advantage

While many water heaters need annual flushing and frequent maintenance, The Tankless is built to last twice as long with half the effort.

Here’s what sets it apart:

  • AquaShield ScaleGuard eliminates descaling entirely.
  • SmartFlow Digital Control delivers precise temperatures and real-time system data.
  • Stainless-steel heat exchangers resist corrosion and last decades.
  • Compact wall-mounted design saves valuable space.
  • Hard-Water Warranty covers Ontario homes fully.
Durable, efficient, and virtually maintenance-free, The Tankless redefines what reliability means in hot-water systems.

Final Thoughts

Your tankless water heater is one of the most dependable systems in your home — and with the right care, it will stay that way for decades. A little attention goes a long way in ensuring consistent comfort, lower utility bills, and zero interruptions.

At The Tankless, we design every system for long-term performance, even in Ontario’s toughest hard-water regions. Whether you’re upgrading from a traditional tank or maintaining your current system, these best practices will help you enjoy endless comfort and confidence in your investment.

If you’re ready to experience the future of water heating, book your free consultation today and discover why more Ontarians are switching to The Tankless — built for hard water, built for efficiency, and built to last.

FAQs

1
How long does a tankless water heater last in Ontario?
A high-quality tankless water heater like The Tankless by LG Home Comfort can last up to 20 years or more with proper maintenance and care. Built-in AquaShield™ protection prevents scale damage, extending lifespan even in hard-water areas.
2
Do tankless water heaters need to be flushed every year?
Not all tankless systems require annual flushing. With AquaShield™ ScaleGuard technology, The Tankless prevents scale buildup automatically, eliminating the need for routine descaling or flushing.
3
What maintenance does a tankless water heater require?
Tankless systems should be inspected annually to ensure venting, sensors, and burners are in good condition. With The Tankless, maintenance is minimal since scale prevention is automatic and internal components are corrosion-resistant.
4
Can hard water damage a tankless water heater?
Hard water can shorten the lifespan of most heaters, but The Tankless is engineered for Ontario’s hard-water conditions. AquaShield™ ScaleGuard stops mineral buildup, protecting the heat exchanger and maintaining performance.
5
How can I make my tankless water heater more energy-efficient?
Use professional installation, maintain proper water flow, keep vents clear, and check system alerts on the SmartFlow™ display. The Tankless already operates up to 30% more efficiently than traditional systems.
6
Is The Tankless suitable for large families or multi-bathroom homes?
Yes. The InfinityFlow™ model delivers continuous hot water across multiple fixtures, while the PureFlow™ model offers efficient performance for smaller homes. Both ensure you never run out of hot water, no matter your household size.
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