If you’ve ever run out of hot water in the middle of a shower, you know how frustrating traditional water heaters can be. That’s where tankless water heaters come in! These modern systems provide hot water on demand, meaning you’ll never have to worry about running out again. But how does a tankless water heater work? Let’s break it down.
How Does a Tankless Water Heater Work
Put simply, a tankless water heater works by heating water only when you are using it. When a hot water tap is turned on, cold water travels through a pipe into the tankless unit. A flow sensor detects this movement and activates the heating mechanism, which can be either a gas burner or an electric element.
The water circulates around a heat exchanger, rapidly heating to the desired temperature before flowing out to the open tap. This process ensures a continuous supply of hot water without the limitations of a storage tank.
Energy Consumption
This process also means these water heaters use less energy. By heating water only when needed, tankless water heaters can be more energy-efficient than traditional storage models.
According to the U.S. Department of Energy, tankless water heaters can be 24-34% more energy-efficient for households that use less than 41 gallons of hot water daily. While the initial investment for a tankless system can be higher, the potential energy savings and longer lifespan—often up to 20 years—can offset the upfront costs over time.
Flow Rates
The efficiency of a tankless water heater is influenced by its flow rate, which typically ranges from two to five gallons per minute (GPM). However, using multiple fixtures at the same time—such as running a shower and a dishwasher—can put more strain on the water heater and cause the temperature to fluctuate.
If you live in a large household or are constantly using multiple streams of hot water at the same time, it’s recommended that you install multiple tankless water heaters to ensure you have a consistent flow of hot water.
If you’re tired of running out of hot water and want a more energy-efficient solution, a tankless water heater is a great choice. With the right unit, you can enjoy endless hot water while saving on energy bills for years to come!
At Ciriello Plumbing, we promise expertise, honesty, and efficiency to the homes and businesses we service in Greater Indianapolis, including Carmel, Fishers, & Greenwood. From residential plumbing repairs to commercial installations, our expert team is dedicated to providing exceptional craftsmanship and unparalleled customer service. For reliable plumbing services you can trust, contact Ciriello Plumbing Solutions today.







