Gray Co. was established in 2002 by Michael Gray.  Our office is located in Billerica MA.  We have been servicing satisfied customers in the Massachusetts and New Hampshire areas with over 20 years of experience in the plumbing, heating and air conditioning contracting profession.

We specialize in super high efficiency heating and air conditioning systems for residential and commercial and replacements. We have also now expanded to offering and are experienced in the many advantages of Geothermal installations.We are fully licensed and insured.

 I have been in the plumbing, heating and air conditioning business for over 20 years, with considerable experience now including Geothermal technology and installations. Our crews have worked on hundreds of commercial and residential projects throughout New England. Each project receives the utmost attention to detail.

Whether you want a simple plumbing renovation or a new, high efficiency heating system or geothermal installation, your job will be treated with my complete attention to every detail. I will make sure your home or business has the highest quality of work from start to finish. – Mike, President, Gray Co.