HAMILTON MECHANICAL- Was founded with a passion for providing top-notch HVAC services to the community of Lawrence and the North Shore of Massachusetts . Also servicing Southern New Hampshire. With over 25 years of experience. Our team is EPA UNIVERSAL Certified,  A2L Flammable Refrigerant Certified,    NORA SILVER Certified Technicians. We take pride in our commitment to reliability and fairness, working tirelessly to ensure that you and your family are safe and comfortable in your home. Trust NEX GEN HVACR for all your HVAC installation, repair, and maintenance needs.