We have a high demand for capable individuals who are ready to work.

Our purpose is to assist our members in securing employment while defending their rights and advancing their interests through education and cooperation. Learn more about our mission...

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insulators support hud INITIATIVES 

General President James P. McCourt recently wrote a letter to Housing and Urban Development Secretary Ben Carson regarding the role HFIAW members can play in ensuring affordable housing with Mechanical Insulation. 


Sisters attend TWbn conference 

We are proud of the 130+ Sisters that attended the 2019 North America's Building Trades Unions (NABTU) Trades Women Build Nations (TWBN) Conference in Minneapolis.  See the pictures from the Conference in our Flickr album. 

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Learn about Our Trades

Insulators are trained and skilled at a multitude of construction trades including: mechanical insulation, firestopping, asbestos and lead mitigation, sound attenuation and specialty fabrications.

3e energy audit

Are your mechanical systems properly insulated? Receive an expert energy assessment that may save you money by showing you ways to save on energy consumption.

Professional Craftsman Code of Conduct Badge

The HFIAW “Professional Craftsman Code of Conduct” (PCCC) promotes jobsite excellence and customer satisfaction. The goal of the PCCC is a job built on time, under budget, and built right the first time. Learn more about our Professional Craftsmen Code of Conduct.

Video Showcase

Firestopping Installation

Learn about the importance of properly installing Firestopping materials through standardized and proper design, installation, inspection and maintenance.

Union Directory

There are nearly 100 Heat & Frost Insulators local unions across North America.
Visit our online directory to find and contact the local union offices closest to you in the United States & Canada.

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Our Trades

Our Trades

Today’s union insulator is skilled at a multitude of construction trades required for mechanical insulation installations...

Insulation Value

Insulation Value

Properly installed insulation saves money, improves lives, and protects the environment...

Member Services

Member Services

Access additional resources for members of the International Association of Heat and Frost Insulators & Allied Workers...


Get Your Insulators Merchandise!

Assorted Merchandise Visit Online Store