A tankless water heater still needs attention, even though it does not store hot water in a large tank. The right maintenance schedule depends on the model, water conditions, use, and the manufacturer's instructions. If you are unsure when your unit was last serviced, start with its manual and service record.
Hippo Plumbing & Heating serves Coquitlam and the Tri-Cities. This guide helps you separate simple homeowner checks from work that belongs to a qualified professional.
Three checks you can make without opening the unit
- Look for water. Check the floor and visible piping around the heater for drips or staining. A leak should be assessed rather than ignored.
- Keep the area clear. Do not stack boxes or flammable items against the appliance. Check that accessible outdoor air openings are not blocked by leaves or debris, following your model's manual.
- Notice changes in performance. Write down error codes, unusual sounds, or a change in hot-water delivery. A photo of the display and model label can help a technician diagnose the issue.
Do not remove the cover, alter gas piping, or disassemble venting to investigate a problem. If you smell gas, leave the area and call the gas utility's emergency line or 911 from outside.
What should a professional tankless service include?
FortisBC says a contractor's tankless water heater service generally includes checking operating and safety controls, testing ignition and burner operation, examining the venting system, and flushing the heat exchanger to remove mineral deposits. The exact work should follow the manufacturer's instructions for your unit.
A technician may also inspect connections and discuss any error history or hot-water complaints. Ask for a clear explanation of what was checked and whether any repair is recommended.
When should you book service sooner?
Book an assessment if water leaks from the unit or its piping, you notice soot around the exhaust, or the heater makes unusual sounds. Those are warning signs identified by FortisBC. Repeated error codes, inconsistent hot water, or a sudden change in performance also deserve a professional diagnosis.
If the heater has stopped providing hot water, note whether other gas appliances are affected and check the user manual for any safe, owner-level checks. Do not repeatedly reset a unit that keeps faulting.
How often does a tankless heater need maintenance?
There is no single service interval that fits every unit. Follow the manufacturer's schedule and ask your service contractor whether your water conditions or usage call for a different interval. Keep a dated record of service, especially if the equipment is under warranty.
If you are comparing a tankless unit with a storage tank, our repair, replacement, and tankless guide covers the decision. For installation or service options, see our tankless water heater service page.
Need help with a tankless water heater in Coquitlam?
Tell Hippo the model, any display code, what has changed, and when it was last serviced. We can help you arrange an assessment and explain the next step. Request service online or call (604) 365-0812.