Located in the heart of San Francisco, California and celebrating over 20 years in the business, Temper Insulation Co., Inc. offers many solutions for Insulating and Fire Stopping Mechanical and Plumbing Systems. Temper Insulation Co., Inc. is a Union Shop that currently employs through The Heat & Frost Insulators & Allied Workers Local 16, The Plumbers & Pipefitters Local 38, and The Construction Laborers Local 261.