Thermostatic Mixing Valves

This free online CPD course from BESA Academy is presented by Altecnic and provides essential knowledge on thermostatic mixing valves. The course covers the different types of mixing valves, their applications, service and maintenance requirements, applicable standards, and in-service testing procedures.

This course is free of charge and CIBSE accredited for CPD. Download your certificate on completion.

What You Will Learn

This 35-minute course covers:

• The different types of thermostatic mixing valves and how they work
• Which valve is appropriate for which application
• Service and maintenance requirements for thermostatic mixing valves
• Applicable standards including TMV2 and TMV3 schemes
• In-service testing procedures and frequency requirements
• Common faults and how to identify and rectify them

Who Should Take This Course?

This course is suitable for heating and plumbing engineers responsible for installing or maintaining hot water systems, facilities and property managers managing thermostatic mixing valve testing and compliance, building services designers and specifiers selecting TMVs for projects, healthcare and education facilities staff responsible for water safety, and anyone involved in the installation, commissioning, or maintenance of hot and cold water systems where scalding protection is required.

Why Thermostatic Mixing Valves Matter

Thermostatic mixing valves are essential safety devices that prevent scalding by blending hot and cold water to deliver water at a safe temperature. They are a legal requirement in many settings including healthcare facilities, schools, care homes, and public buildings.

Understanding how to select, install, commission, and maintain thermostatic mixing valves correctly is essential for ensuring safe hot water delivery and meeting regulatory requirements. Regular in-service testing is mandatory, and failure to comply can result in serious injury and legal liability.

The Benefits of This Course

Completing this course will help you:

• Understand the different types of thermostatic mixing valves and their applications
• Select the correct valve for specific installations
• Carry out service and maintenance procedures correctly
• Understand applicable standards and testing requirements
• Ensure compliance with water safety regulations
• Earn CIBSE-accredited CPD to support your professional development

Course Format

Duration: 35 minutes
Format: 100% online, self-paced
Assessment: Knowledge check questions at the end of the course
Certification: CPD certificate available to download on completion
Accreditation: CIBSE accredited
Cost: Free of charge

Frequently Asked Questions

What is a thermostatic mixing valve (TMV)?
A thermostatic mixing valve blends hot and cold water to deliver water at a safe and consistent temperature. It automatically adjusts the mix if supply temperatures or pressures change, helping prevent scalding and ensuring user safety.

Where are thermostatic mixing valves typically installed?
TMVs are commonly installed in healthcare facilities, schools, care homes, hotels, gyms, and public buildings where scalding protection is essential. They are also used in residential bathrooms, showers, and wash basins to maintain safe hot water temperatures.

What are the TMV2 and TMV3 standards?
TMV2 and TMV3 are UK certification schemes that define the performance and safety requirements of thermostatic mixing valves. TMV2 is mainly used in domestic and commercial applications, while TMV3 is intended for higher-risk environments such as hospitals and healthcare settings.

Why is regular testing of thermostatic mixing valves required?
Regular testing ensures that the valve continues to maintain safe outlet temperatures and responds correctly to changes in water supply. Over time, scale, debris, or wear can affect valve performance, making routine testing essential for safety and compliance.

How often should thermostatic mixing valves be serviced?
Service intervals depend on the installation environment and risk level. High-risk environments such as healthcare facilities may require more frequent testing, while other buildings typically follow scheduled inspections and annual servicing.

What are common faults found in thermostatic mixing valves?
Common faults include scale build-up, debris blocking the valve, worn internal components, incorrect installation, or failure of the thermostatic element. These issues can affect temperature control and must be identified during maintenance inspections.

Who should install and maintain thermostatic mixing valves?
TMVs should be installed, commissioned, and maintained by qualified heating or plumbing professionals who understand water system safety, applicable standards, and proper testing procedures.

Is this course suitable for beginners?
Yes. The course provides a clear introduction to thermostatic mixing valves, including their function, applications, maintenance requirements, and testing procedures, making it useful for both new and experienced building services professionals.