Tankless Water Heater

Tankless water heaters, also called on-demand heaters, heat water as it flows through the unit instead of storing it in a tank like traditional heaters.

Tankless water heater cutaway

How it works: When you turn on a hot water tap, cold water travels through a pipe into the unit. Inside, either a gas burner or an electric element heats the water on demand. This allows for a continuous supply of hot water, without the need to wait for a tank to refill and reheat.

Pros:

  1. Energy Efficiency: Tankless heaters only heat water when needed, reducing energy consumption compared to constantly heating water in a tank.
  2. Space-Saving: Tankless units are much smaller than tank-style heaters, freeing up valuable space in your home.
  3. Endless Hot Water: Since tankless heaters heat water on demand, there’s no risk of running out of hot water during long showers or heavy usage periods.
  4. Longer Lifespan: Tankless heaters typically last longer than tank-style heaters, often up to 20 years with proper maintenance.

Cons:

  1. Higher Upfront Cost: Tankless water heaters are generally more expensive to purchase and install compared to tank-style heaters.
  2. Limited Flow Rate: While tankless heaters provide endless hot water, they may struggle to meet high demands for hot water simultaneously from multiple fixtures.
  3. Installation Complexity: Installing a tankless water heater may require modifications to your home’s gas lines or electrical system, potentially increasing installation costs.
  4. Initial Lag: There may be a slight delay in receiving hot water from a tankless heater compared to a tank-style heater, as the water must be heated on demand.

Price

Tankless water heaters typically cost more upfront than tank-style heaters, but they can lead to long-term savings due to their energy efficiency.

Maintenance

While tankless water heaters generally require less maintenance than tank-style heaters, it’s still recommended to flush the unit periodically to prevent mineral buildup and ensure optimal performance.

Lifespan

With proper maintenance, tankless water heaters can last up to 20 years or more, significantly longer than tank-style heaters, which typically last around 10-15 years.

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