For 24×7 emergency service or to reach our office please call 978-667-8800
For general questions and inquiries, please use the form below.
At USI, our mission is to serve our customers more efficiently and effectively than anyone else by treating our customers as we personally would like to be treated. We believe in providing the greatest value possible by offering first class service as well as uncompromised quality at a competitive price.
USI is accustomed to tight deadlines and special situations. USI is ready to help you eliminate expensive downtime, save on energy costs and extend the service life of your HVAC systems and equipment.
8 Cook Street
Billerica, MA 01821
(p) 978.667.8800 MA
(p) 603.898.8286 NH