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Should You Go Tankless? Consider These Factors to Find Out

Tankless water heater technology is a new and exciting development in the plumbing world. If you’re faced with the option of replacing your current water heater, you may have wondered if tankless is the choice for you. Take a look at the following factors to learn more about whether your Houston home could benefit from tankless technology. 

Unit Cost

Do a little research, and you’ll discover that tankless water heaters often cost about the same as a high-quality tank model. However, you should also consider the cost of installing a tankless water heater in your home. Tankless water heaters are gas-fired, meaning that adequate sealing and venting of the system is needed for safety. Even if your current water heater in Houston uses gas, you may need to modify your existing venting system before a tankless model can be installed. Talk to your plumbing service ahead of time so you can factor in the cost of installation when considering your budget.

Energy Efficiency

Tankless water heaters use energy only when you spin the hot water tap. By contrast, tank water heaters work around the clock to keep water hot and ready to use, thus consuming more energy. Installing a tankless water heater in your home can cut your energy usage by up to 30%, which can spell savings in the long run. However, your energy savings will depend upon the model you choose. It may also take some time for the energy savings you enjoy to cover the higher cost of installation (see above). Both tankless and tank water heaters are improving in efficiency each year, so it’s important to get all the facts about any unit’s predicted energy usage before you make a decision.

Size and Flow Rate

If you do decide to install a tankless water heater, there are a few more factors to examine when choosing a model. Consider the size of your home and the amount of water you use. While tankless water heaters are advertised as providing an “endless” supply of hot water, you’ll still need to purchase a model that can provide the output your home needs. This means figuring out the flow rate of the water in your home. All tankless water heaters are rated for a minimum flow rate, which is measured in gallons per minute. If your flow rate is lower than the minimum rate listed on your model, it can cause your water heater to overheat. A flow rate that is too low for your chosen model can also result in an inconsistent supply of hot water. Your plumber can measure your home’s flow rate to help you choose the model that is right for your needs.


Whether you choose a tank water heater or a tankless one, the professional plumbers at Mr. Rooter of Houston are here to help you maintain and repair your water heater in Houston. Visit our website for a full list of our plumbing services, or click through our blog for more tips and advice from the pros. 

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