Tankless Water Heaters: Are They Right For Me? Ask A Plumber

Is a Tankless Water Heater a Good Option For Your Home?

The installation of tankless water heaters in residences is becoming increasingly popular as many homeowners recognize the benefits over traditional tank water heaters.

Unlike conventional systems, which require a large vessel to hold and heat 40 to 50 gallons of water regardless of usage, tankless water heaters heat water on demand, eliminating the need for constant energy consumption.

When a faucet is turned on, the gas or electric heater activates, supplying hot water without storing it, which enhances efficiency and reduces energy costs.

Sizing and Installation Considerations

St Paul Pipeworks plumbers advise against purchasing tankless water heaters from big box stores or online retailers, as homeowners often lack the expertise to determine the correct sizing for their specific needs. Many negative reviews about tankless systems stem from improper sizing or piping installations. Consulting a licensed plumber ensures the unit is appropriately sized and installed for optimal performance.

Heating Efficiency

It’s important to note that tankless water heaters require significantly higher energy input compared to tank systems, particularly in areas with colder incoming water, such as Minnesota.

For instance, while a gas tank water heater operates at approximately 40,000 BTUs, a tankless system in these regions might need around 200,000 BTUs to heat water effectively.

However, the key advantage is that tankless systems only consume energy while hot water is being used, resulting in overall lower energy usage compared to tanks.

Cost and Longevity

While tankless water heaters tend to have higher initial purchase and installation costs—particularly those using gas due to the need for larger pipes and increased gas pressure—they also offer longevity benefits. Most tankless systems come with a 15 to 20-year guarantee on the heat exchanger, compared to the standard six-year guarantee of tank water heaters, which typically last 12 to 14 years.

Continuous Hot Water Supply

One notable feature of tankless water heaters is the ability to provide continuous hot water; as long as a faucet is turned on, users will have access to hot water without interruption. Recently, St Paul Pipeworks plumbers installed two tankless systems in a high-demand birthing center, where the previous tank heaters consistently ran out of hot water.

Following a thorough assessment, the new tankless systems were correctly sized and installed to meet the center’s needs, ensuring abundant hot water supply for multiple showers and soaking tubs simultaneously.

Think a Tankless Water Heater Makes Sense For You?

If you are interested in installing a new tankless water heater or seeking a reliable plumber in the St. Paul and Minneapolis metro area, contact St Paul Pipeworks a call today.

Yours Truly,

Matthew Dettwiler

Social Media Manager

FAQs

Q: What is a tankless water heater, and how does it work?

A: A tankless water heater, also known as an on-demand water heater, is a system that heats water only when it is needed. Unlike traditional water heaters that store and constantly heat a large volume of water, tankless heaters heat the water directly as it flows through the unit. This instantaneous heating process allows for energy efficiency and a continuous supply of hot water.

Q: Are tankless water heaters more energy-efficient than traditional water heaters?

A: Yes, tankless water heaters are generally more energy-efficient than traditional water heaters. Since they don’t constantly heat and store a large volume of water, there is less standby heat loss. Tankless heaters only consume energy when hot water is being used, resulting in reduced energy consumption and lower utility bills over time.

Q: Are tankless water heaters more expensive to install than conventional water heaters?

A: Tankless water heaters generally have a higher upfront cost compared to conventional water heaters. The installation expenses for tankless units can be higher due to factors such as the need for specialized venting, electrical upgrades, or gas line adjustments. Additionally, larger homes or those requiring multiple tankless units may require additional modifications and higher installation costs. However, it’s important to consider the long-term savings and benefits of tankless water heaters, such as energy efficiency and lower utility bills, which can offset the initial installation expenses over time. Ultimately, the cost of installation depends on various factors and should be evaluated based on individual circumstances.

Q: Can a tankless water heater provide enough hot water for my household?

A: Yes, tankless water heaters can provide enough hot water for most households. However, the size and capacity of the unit should be chosen carefully based on the hot water demand of your household. It’s important to consider factors such as the number of bathrooms, appliances, and simultaneous hot water usage to ensure the tankless heater can meet your needs effectively.

Q: Are there any limitations or drawbacks to using a tankless water heater?

A: While tankless water heaters offer numerous advantages, they also have some limitations. One limitation is the flow rate capacity, which determines the amount of hot water the unit can deliver at a time. If multiple hot water outlets are used simultaneously and the flow rate exceeds the heater’s capacity, the water may not reach the desired temperature. Additionally, installation costs for tankless heaters can be higher compared to traditional water heaters.

Q: How long do tankless water heaters typically last, and do they require regular maintenance?

A; Tankless water heaters are known for their durability and longevity. With proper maintenance, they can last up to 20 years or more. Regular maintenance includes flushing the unit to remove mineral deposits and checking for any signs of wear or malfunction. It’s also important to consult the manufacturer’s guidelines and schedule professional maintenance to ensure optimal performance and extend the lifespan of the tankless water heater.