24/7 EMERGENCY SERVICE: (209) 466-1477

Our awesome Office Staff, Experienced & Knowledgeable Technicians, Installers, Sheet Metal Fabricators and Home Energy Advisers have been helping the community grow since 1944!

JH Simpson Company Michael Lawson

Owner / President

Established in 1944, J.H. Simpson Company, Inc. offers a wide range of energy efficient solutions that include air conditioning, heating, insulation, solar, roofing, windows, and plumbing. J.H. Simpson Company, Inc. takes a full home energy approach with a staff of 40 experienced and knowledgeable technicians, installers, fabricators, home energy advisers and an awesome office staff ready to assist you 24/7.

J.H. Simpson Company, Inc. continues to innovate and adapt to the needs of our ever growing client base. This has allowed us to diversify and mobilize a fleet to cover the immense Northern & Central California Regions. J.H. Simpson Company, Inc. takes the time to perform a full energy audit on every home giving our customers the best energy solution for their unique needs and wants. J.H. Simpson Company, Inc. is a one stop shop that will provide the service(s) you need.


To make an appointment please call (209) 466-1477 or fill out the form below. Someone from J.H. Simpson Company will respond on the day that your email is received.


California First is the smart path to financing home upgrades that save energy and water.