HVAC Services in Hampton, NH

603 Mechanical provides reliable HVAC repair, replacement, installation, and maintenance services throughout Hampton and the NH Seacoast. Whether it’s your home, business, or restaurant, our certified technicians deliver expert solutions to keep your heating, cooling, and refrigeration systems running at peak performance.

Complete HVAC Solutions for Every Season

New England weather can be unpredictable, but your comfort shouldn’t be. Our team specializes in the service and installation of air conditioning systems, heaters, furnaces, and refrigeration units for both residential and commercial properties. From routine AC maintenance to full furnace replacement, we work to ensure your system is efficient, reliable, and built to last.

Our services include:

Air Conditioning Repair, Replacement, Installation & Maintenance

Heater and Furnace Repair, Replacement & Tune-Ups

Refrigeration Repair, Replacement & Maintenance

Water Heater Service & Installation

Whether you need a quick fix or a full system upgrade, we bring expertise, honesty, and attention to detail to every job.

Local Experts Committed to Quality

As a locally owned company based right here in Hampton, NH, 603 Mechanical understands the unique heating and cooling needs of the Seacoast. We proudly serve Hampton, Seabrook, North Hampton, Hampton Falls, and Rye with prompt, professional service.

Our certified HVAC technicians are highly trained in modern systems from leading manufacturers, making us the trusted choice for:

HVAC repair and servicing

AC and furnace installation

Oil and gas furnace maintenance

Water heater and refrigeration solutions

We combine advanced technical knowledge with friendly, reliable service—earning the trust of homeowners, businesses, and restaurant owners alike.

Serving: Hampton, Seabrook, North Hampton, Hampton Falls, Rye

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.

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