Kevin Cook for Idaho Senate Ribbon

Heating water accounts for almost 20% of your energy costs. With a traditional water heater, you have a tank that is constantly being heated, regardless of whether you need hot water at that moment or not. Thanks to technological advancements, tankless water heaters have become a popular choice for homeowners looking to cut back on their energy usage. But can any home have a tankless water heater installed? In this blog post, we’ll explore the factors that determine whether a tankless water heater can be installed in your home.

Size of your home

The first factor to consider is the size of your home. Tankless water heaters come in different sizes, and some units may not generate enough hot water for large households with multiple bathrooms and large tubs. Your plumbing technician will evaluate your water usage and recommend the appropriate size for your household.

Existing gas line

Most tankless water heaters run on natural gas or propane. You need to have a gas line that can handle the increased demand, or a new one can be installed. You’ll need to work with a licensed plumber to ensure that your gas supply is up to code.

Electrical supply

Tankless water heaters also require enough electricity to run. Depending on the unit, you may need to upgrade your electrical supply to accommodate the increased demand.

Ventilation needs

Tankless water heaters produce exhaust that needs to be vented outside. Depending on the unit and the location of your water heater, you’ll need to install either a vertical or horizontal vent pipe. If your home has limited space for ventilation, a tankless water heater may not be a good option.

Hot water usage habits

Finally, your hot water usage habits are an important factor in determining whether a tankless water heater is the right choice for you. Because there is no tank to store hot water, tankless water heaters can only produce a limited amount of hot water at any given time. If multiple people in your household take showers or use hot water at the same time, you may experience a decrease in water pressure or temperature. Your plumbing technician can help you choose the right unit that can accommodate your usage habits.


Tankless water heaters are an excellent choice for homeowners looking to save on energy costs and reduce their carbon footprint. However, whether you can install a tankless water heater in your home depends on several factors. Fortunately, our licensed plumbing technicians at S3 Plumbing can evaluate your home and make recommendations based on your individual needs. Contact us today to schedule a consultation and learn about the tankless water heater options available to you.