Why is a Water Heater Mixing Valve Required by the OBC
3/14/20232 min read


A water heater mixing valve is an important component of a hot water system that controls the temperature of water that is delivered to various taps and fixtures throughout your home. In this blog post, we'll discuss what a water heater mixing valve does and why it is required by the Ontario Building Code.
What is a Water Heater Mixing Valve?
A water heater mixing valve is a device that mixes hot water from a water heater with cold water to deliver water at a safe and consistent temperature. The valve is typically installed near the water heater and works by blending hot water with cold water to achieve the desired temperature. This prevents scalding or burns that can occur when hot water is delivered at excessively high temperatures.
Why is a Water Heater Mixing Valve Required by the Ontario Building Code?
The Ontario building code requires that all new hot water systems include a water heater mixing valve. This is because hot water delivered at a temperature of 60°C (140°F) or higher can cause serious scalding injuries, particularly in young children and older adults with skin. By installing a mixing is controlled and kept at a safe level, reducing the risk of burns and injuries.
Benefits of a Water Heater Mixing Valve
In addition to preventing scalding injuries, there are several other benefits of installing a water heater mixing valve:
Energy Savings: By reducing the need for excessively hot water, a mixing valve can help reduce energy consumption and lower your utility bills.
Increased Lifespan of Appliances: Appliances and fixtures that are exposed to excessively hot water can experience wear and tear, leading to a shorter lifespan. By controlling the temperature of water, a mixing valve can help extend the lifespan of appliances and fixtures.
Better Consistency: With a mixing valve, you can achieve a consistent temperature of water throughout your home, ensuring a comfortable and safe experience for everyone who uses the water.
How to Install a Water Heater Mixing Valve
Installing a water heater mixing valve is a job for a licensed plumber. The valve must be installed in accordance with the manufacturer's instructions and the Ontario Building Code. A plumber will also ensure that the valve is properly sized for your water heater and your home's specific needs.
Conclusion
A water heater mixing valve is an essential component of a safe and efficient hot water system. It works by mixing hot water with cold water to deliver water at a safe and consistent temperature, reducing the risk of scalding injuries. The Ontario Building Code requires that all new hot water systems include a mixing valve, and there are several benefits to installing one, including energy savings and increased appliance lifespan. If you're considering installing a mixing valve or need to have one replaced, be sure to contact a licensed plumber to ensure proper installation and compliance with the Ontario Building Code.