Our experts are frequently asked, “Which ignition system should my tankless water heater have in place?” So in today’s post, we would like to talk briefly about hot surface ignition systems. They are found in some tankless water heater that you will find for sale on Waterheaters.com.
Although the hot ignition surface ignition setups may vary among the brands, they all share a list of great benefits. For example, tankless water heaters with hot surface ignitions tend to have long lives, great fuel efficiency, and low emissions. This is expressly true for models that boast safety features and delay timers. They ensure that the pilot light is only on at the right times and potentially flammable emissions are kept well under control.
The list of brands that feature hot surface ignitions at this time includes, but isn’t limited to:
- Polaris by American Residential/Commercial (34 and 50 Gallon)
- HTP SuperStor Ultra Indirect (30, 60, 80 and 119 Gallon)
- O. Smith Dura-Power™ Commercial (6, 10, 15, 20, 30, 40 and 50 Gallon)
In general, hot surface ignition systems start with small, electric-powered components that are made from some form of silicon. The most popular are carbide and nitride. Once activated, the electricity quickly heats those components to designated temperatures. These are initially set by the manufacturers, so buyers should expect some variations in both timing and voltage needs.
The components’ temperature change, in turn, causes the tankless unit’s heater to kick on. The heater will then remain on until the water has reached the proper temperature. Afterward, the tankless water heater’s ignition system will automatically kick off, and the silicon components will stop glowing. If the hot surface ignition silicon components do not heat up or shut off as expected, it is best to call a tankless water heater technician and schedule an inspection.
There are only a handful of things that tend to cause tankless water heaters’ hot surface ignition systems to malfunction. Among them are faulty switches or controls, broken thermostats, damaged transformers and interruptions in power. Thankfully, all of them tend to be easy to repair or replace with the brand models we have already referenced today.
To learn more about hot surface ignition systems and how they impact the tankless water heaters we have in inventory, please contact our Waterheaters.com staff.