Tankless water heaters in Edmonton are known for their energy efficiency and reliability, but just like any home appliance, they can occasionally run into a few issues. As a result, it can be helpful for homeowners to understand some of the more common causes and identify when servicing is needed.
Below, let’s break down a few of the most common causes of tankless water heater failures. Read on to learn more!
#1: Mineral Blockages
Hard water is no stranger to Edmonton. It shows up in many places, from spots on dishes to soap scum in the shower, and also in tankless systems. Hard water contains minerals like calcium and magnesium, which can eventually accumulate in the heat exchanger of tankless systems. If left untreated, these blockages can lead to inconsistent water flow and unpredictable temperatures.
As a result, descaling once a year can remove most of this mineral buildup. Just like how we visit the dentist for cleanings, descaling works similarly.
#2: Debris In Air Intake
While some tankless system issues are difficult to notice, others are less-than-subtle. A blocked air intake is one of these issues, which can cause error codes on the unit’s display and frequent shut-offs mid-cycle. Air intakes are typically located on the exterior wall directly behind the unit, on a side-wall vent kit, or on the roof for vertical exhaust setups.
Common culprits include leaves, snow, ice buildup, and small-animal nests, all of which can quietly accumulate at the intake over time. Make it a point to check the system intake regularly, especially after heavy snowfall or strong winds.
At the end of the day, a quick inspection and clearing can save a service call.
#3: Non-Sufficient Flow Rate
Tankless water heaters in Edmonton are limited by flow rate, which is the rate at which the heater produces hot water. A set limit caps this rate, and if demand for hot water exceeds supply, you’re left with a cold shower when you least expect it.
If your family has grown or you’ve renovated and added more fixtures, your current water heater may be undersized for your home. If so, it may be time to replace your current water heater with a larger-capacity model.
#4: Temperature Settings Are Incorrect
Sometimes what looks like a failing tankless heater is really just a few incorrect settings in disguise. The normal temperature range for tankless systems is typically 48.9°C (120°F) to 51.7°C (125°F), but sometimes these settings can change due to power outages or someone accidentally lowering the temperature.
Resetting your thermostat is simple and requires no service call. Most units have a front-panel display that lets you adjust the temperature back to an acceptable point.
#5: Water Is Circulating Slowly
Sometimes the issue doesn’t lie in the heater itself, but in the path the water takes around the home. Tankless water heaters in Edmonton produce hot water instantly, but they may not deliver it to every fixture as quickly as you’d like. If you’re waiting more than 45 seconds for hot water, your home may benefit from a recirculation pump.
Recirculation pumps helpful in homes where the heater is far from the kitchen, bathrooms, and other high-demand fixtures. They work by keeping a small amount of hot water moving through the lines so it’s ready at the fixture the moment you turn the tap.
Skip the Troubleshooting with Weiss-Johnson
Weiss-Johnson is Edmonton’s premier plumbing company, chosen by generations of homeowners since 1977. Contact us today for a free estimate on a tankless water heater for your home in Edmonton.
