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What are Thermal Expansion Tanks and are They Necessary?

| Wednesday December 14, 2022

Are you tired of facing water heater issues at home? One thing that can help prevent your water heater from malfunctioning is a thermal expansion tank. Yes, you heard us right! Here are some clear signs that a thermal expansion tank is essential for your property. 

  • Water heater is making a hissing noise
  • Water heater leaks frequently
  • Water heater is frequently turning on and off automatically
  • There is water pooled around the base of the water heater
  • If your house has a ‘closed’ plumbing system

Why is Thermal Expansion Tank Necessary?

Most home hot water heaters come with a factory-installed expansion tank. However, many are not aware of what these tanks are or why they are necessary. Here is a brief explanation of thermal expansion tanks and why they may be required in your home.

Thermal expansion tanks are designed to absorb the increased volume of water that is created when water is heated. This increased volume is due to the fact that water expands as it is heated. The expansion tank is connected to the property’s water heater and is typically installed in the attic or other locations where it will not be in the way. The expansion tank has a pre-pressurized air bladder that provides a cushion of air that is used to absorb the increased volume of water. The air pressure in the expansion tank is set to a level that is higher than the home’s water pressure. 

This allows the tank to absorb the increased volume of water without causing an increase in water pressure in the home. If an expansion tank is not installed in a home with a water heater, the increased volume of water can cause the water heater to rupture. This can lead to significant damage to the home and may even require the replacement of the water heater. In some cases, the increased water pressure can also cause the home’s pipes to burst. 

In conclusion, when purchasing a water heater for your home, it is important to take into consideration the five points above. If your household checks off any of those points, you may need to consider investing in a thermal expansion tank. 

Looking for a reliable, durable and high-quality water heater for your home? Why not consider Rheem? Rheem’s extensive range of storage and instant water heaters suit every unique water heating need. If you’re looking for an instant water heater, Rheem’s Prestige Range of Electric Instant Water Heaters is a great choice to consider. 

With the Prestige Range of Electric Instant Water Heaters, you can enjoy endless hot showers. The Prestige Platinum and Prestige Plus Instant Water Heaters also come with a shower head that offers 6 different shower options, providing users with a variety of shower styles and experiences to choose from! These instant water heaters are also outfitted with a replaceable stainless-steel heating chamber and replaceable Incoloy heating element, which are more resistant to corrosion. Additionally, these replaceable features make maintenance or repairs much easier as only the damaged heating chamber or heating element needs to be changed out instead of the entire water heating unit. 

Visit our official website today to browse our selection of instant and storage water heaters!


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