Reliable HVAC Service Across the NH Seacoast & North Shore MA
603 Mechanical proudly serves homes and businesses throughout southeastern New Hampshire and the North Shore of Massachusetts with expert repair, replacement, installation, and maintenance services for heating, air conditioning, and refrigeration systems.
Expert HVAC Services You Can Count On
Whether it’s a mid-summer AC repair, winter furnace tune-up, or refrigeration installation for your business, our certified technicians bring skill, reliability, and professionalism to every job. We service residential, commercial, and restaurant clients — delivering comfort and peace of mind all year long. From air conditioning maintenance to heater replacement, we make sure your equipment performs at its best.
Local Specialists with a Commitment to Quality
As a locally owned HVAC company based in Hampton, NH, 603 Mechanical is built on expertise and trust. Our technicians are trained to service a full range of systems including air conditioners, furnaces, water heaters, and refrigeration units. We understand the unique needs of New England weather — and our fast, courteous service reflects that. Whether you need AC installation, furnace repair, or refrigeration maintenance, we’re ready to help keep your space comfortable and energy-efficient.
603 Mechanical provides reliable HVAC repair, replacement, installation, and maintenance services throughout Hampton and the NH Seacoast – keeping heating, cooling, and refrigeration systems running at peak performance for homes, businesses, and restaurants.
At 603 Mechanical, we keep homes, businesses, and restaurants across Exeter and the Seacoast region comfortable year-round with professional HVAC services. Whether you need a quick AC repair, a furnace tune-up, or a new heating system installation, our certified technicians deliver expert care with a local touch.
Our team specializes in HVAC repair, replacement, installation, and routine maintenance for a wide range of systems. We know how important reliable heating and cooling is for Massachusetts homes and businesses—especially during seasonal shifts. From fast furnace service to full AC system upgrades, we’re here to keep your property comfortable year-round.
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Choose 603 Mechanical for your HVAC service.
When you work with 603 Mechanical, you’re getting more than just a service call—you’re partnering with a team dedicated to keeping your property comfortable year-round.