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Choosing Between Tankless and Storage Tank Water Heaters in San Jose

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Choosing Between Tankless and Storage Tank Water Heaters in San Jose

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In San Jose, selecting the right water heater for your home can significantly impact your daily life and energy bills. Understanding the difference between tankless (or instantaneous) and storage tank water heaters is crucial in making an informed decision. At United Plumbing & Water Heaters, we’re here to break down the pros and cons of each type, helping you choose the best option according to your needs.

Instantaneous and Storage Water Heaters: What is the Difference?

The key difference between tankless and storage water heaters lies in how hot water is produced and stored. Tankless water heaters provide hot water on demand by heating water directly as it passes through the unit, without the need for a storage tank. This means that they do not store hot water but instead heat it instantaneously as needed.

On the other hand, storage tank water heaters keep a large volume of hot water ready at all times in a tank. The water is heated and reheated to maintain a constant temperature until it is used. This method can be less energy-efficient due to heat loss from the tank, known as standby heat loss.

Pros and Cons of Instantaneous and Storage Water Heaters

Tankless Water Heaters


  • Energy Efficiency: By heating water only when needed, tankless models are generally more energy-efficient, reducing energy costs.

  • Space-Saving: Without a bulky tank, they take up less space and can be installed in smaller areas, including closets or on exterior walls.

  • Longevity: Tankless water heaters typically last longer than their tank counterparts, with a life expectancy of 20 years or more.


  • Higher Initial Cost: The upfront cost of a tankless water heater is usually higher than that of a storage model.

  • Limited Output: In homes with high hot water demand, a single tankless unit might not suffice, requiring multiple units.

Storage Tank Water Heaters


  • Lower Initial Cost: These units are generally less expensive to purchase and install.

  • Simplicity: Storage heaters have a straightforward design, making them easier and often cheaper to maintain and repair.

  • High Volume: Can provide a large amount of hot water consistently, which is ideal for high-demand homes.


  • Energy Costs: Standby heat loss can lead to higher energy bills.

  • Size and Space: The tank requires significant space, which can be a problem in smaller homes.

  • Lifespan: Typically lasts 10-15 years, shorter than tankless models.

Which Water Heater to Choose According to Your Needs

When deciding which water heater to choose in San Jose, consider your household’s hot water usage, space availability, budget, and energy efficiency desires. If you have limited space and prioritize energy efficiency and long-term savings, a tankless water heater might be the right choice. However, if your household’s water demand is high and initial budget constraints are tight, a storage tank water heater could be more suitable.

At United Plumbing & Water Heaters, we can help assess your hot water needs and preferences to recommend the ideal water heater for your San Jose home. Whether you opt for a tankless or storage model, our team will ensure a professional water heater installation services and provide tips for maintaining your new water heater effectively.


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