Patriot Mechanical Services was founded on a strong and genuine base of old fashioned honesty. From the day he began working in this industry over 25 years ago, Jim Leshinski has devoted himself to providing customers with an HVAC experience they can feel good about. We service properties in all of Eastern and Central Massachusetts with the care and personal service of a small town company. We provide heating, ventilation, air conditioning and refrigeration services to both commercial and residential clients. Please see our Service List for more details.