When it comes to choosing a water heater for your home, the decision often boils down to two main types: storage tank water heaters and tankless water heaters. Each option has its own set of advantages and disadvantages, making it crucial to understand how they work and what might be best for your specific needs. In this blog post, we’ll explore the differences between these two types of water heaters to help you make an informed decision.

Storage Tank Water Heaters
How They Work
Storage tank water heaters, also known as conventional water heaters, store a specific amount of hot water in a tank. When you turn on the hot water tap, the water is drawn from the top of the tank, and the heater refills with cold water at the bottom. The heating element then warms the new water to maintain the desired temperature.
Pros
- Lower Initial Cost: Storage tank water heaters are generally less expensive to purchase and install compared to tankless models.
- Simplicity: They are straightforward to operate and maintain, making them a popular choice for many homeowners.
- Availability: Hot water is readily available, as the tank stores a significant amount of water.
Cons
- Energy Inefficiency: These heaters continuously heat water, leading to standby heat loss, which can increase energy bills.
- Limited Hot Water Supply: Once the stored hot water is depleted, you may have to wait for the tank to refill and reheat.
- Space Requirements: Storage tanks can take up a considerable amount of space, which may be a concern in smaller homes.
Tankless Water Heaters
How They Work
Tankless water heaters, also known as on-demand water heaters, heat water directly without the use of a storage tank. When you turn on the hot water tap, cold water travels through a pipe into the unit, where it is heated by either gas or electric elements.
Pros
- Energy Efficiency: Tankless water heaters only heat water as needed, which can lead to significant energy savings and lower utility bills.
- Unlimited Hot Water: Since they heat water on demand, you won’t run out of hot water, making them ideal for larger households or homes with high hot water demands.
- Space-Saving Design: These units are compact and can be installed in smaller spaces, including walls or under sinks.
Cons
- Higher Initial Cost: The purchase and installation costs for tankless water heaters are generally higher than those for storage tank models.
- Flow Rate Limitations: If multiple hot water outlets are used simultaneously, a tankless heater may struggle to provide enough hot water, leading to temperature fluctuations.
- Maintenance: They may require more frequent maintenance, including descaling, especially in areas with hard water.

Purchase Price and Installation Cost
When considering the purchase price and installation cost of water heaters, it's essential to evaluate both storage tank water heaters and tankless water heaters. Here’s a breakdown of the costs associated with each type:
Storage Tank Water Heaters
Purchase Price
- Cost Range: Storage tank water heaters typically range from $300 to $1,500 depending on the size, brand, and features.
- Size Matters: Larger tanks (e.g., 50 gallons or more) tend to be more expensive, while smaller units are generally more affordable.
Installation Cost
- Installation Fees: The installation cost for storage tank water heaters usually ranges from $200 to $800. This can vary based on factors such as:
- Local labor rates
- Complexity of the installation (e.g., replacing an old unit vs. new installation)
- Any necessary plumbing or electrical work

Tankless Water Heaters
Purchase Price
- Cost Range: Tankless water heaters are generally more expensive, with prices ranging from $500 to $2,500. The cost depends on:
- The type of fuel (gas or electric)
- Flow rate capacity (how much hot water it can provide at once)
- Brand and efficiency ratings
Installation Cost
- Installation Fees: The installation cost for tankless water heaters can be higher, typically ranging from $500 to $1,500. Factors influencing this cost include:
- The need for additional gas lines or electrical upgrades
- Venting requirements for gas models
- Complexity of the installation, especially if retrofitting an existing system
Summary of Costs
Type of Water Heater | Purchase Price Range | Installation Cost Range |
---|---|---|
Storage Tank Water Heater | $300 - $1,500 | $200 - $800 |
Tankless Water Heater | $500 - $2,500 | $500 - $1,500 |
When considering purchase price and installation costs, storage tank water heaters generally have a lower upfront cost compared to tankless models. However, tankless water heaters can offer long-term savings on energy bills due to their efficiency. It's essential to weigh these costs against your household's hot water needs, budget, and long-term plans to determine the best option for your home.

Which Is Best for Your Home?
The choice between a storage tank water heater and a tankless water heater ultimately depends on your household's specific needs and preferences. Here are some factors to consider:
- Household Size: If you have a large family with high hot water demands, a tankless water heater may be more suitable. Conversely, if your hot water needs are moderate, a storage tank heater may suffice.
- Budget: Consider both the initial costs and long-term energy savings. While tankless heaters are more expensive upfront, they can save you money over time.
- Space Availability: If you have limited space, a tankless water heater may be the better option due to its compact size.
Conclusion
Both storage tank and tankless water heaters have their pros and cons, and the best choice for your home will depend on your specific needs, budget, and space constraints. Take the time to evaluate your hot water usage and consult with a professional plumber or HVAC technician to determine which system will work best for you. By making an informed decision, you can ensure that your home has a reliable and efficient hot water supply for years to come.