Granite State Mechanical Services — Merrimack, NH

Business Overview

Granite State Mechanical Services Merrimack NH is a family-owned plumbing and HVAC company serving southern New Hampshire since 1987. The firm serves both homes and small businesses with installations, routine maintenance, and repairs. Technicians are available 24 hours a day, seven days a week for emergency calls. The company offers free estimates, clear pricing, and a labor warranty on service work.

Key Services

Work is organized around heating, cooling, and plumbing so customers get focused results.

• HVAC: installation and replacement of furnaces, ACs, ductless mini-split systems, routine maintenance, and repairs to keep systems running through cold New Hampshire winters and humid summers.
• Plumbing: inspections, pipe and fixture installation, toilet and bathtub or shower replacement, water heater installation and repair.
• Energy and indoor air quality: advice on improving efficiency and indoor air quality, and system upgrades that lower utility costs.

Areas Served

Primary service area covers Merrimack and nearby towns across Hillsborough and Merrimack counties. Typical service towns include:

• Manchester, Concord, Merrimack, Hudson, Bedford
• Goffstown, Milford, Windham, Hooksett, Amherst
• Litchfield, Hollis, Bow, Pembroke, Suncook
• Brookline, Pinardville, Epsom, Deerfield, Candia
• Allenstown, Boscawen, Dunbarton, Mont Vernon, and more

Company History

Mark Downing opened the business as a one-man operation in 1987. Over the years, the company expanded staff and services to match customer needs while keeping the neighborhood-service feel. The business has continued steady growth by focusing on practical solutions for the types of homes common in Merrimack and the surrounding communities.

Leadership

The current owner has worked in the family business since 2009. That hands-on experience keeps the team rooted in local needs: older Colonial and Cape-style homes, newer suburban builds, and small commercial spaces. Staff maintain trade certifications and are active in local trade circles to stay current on codes and best practices.

Specialties & Highlights

• Service-focused approach with technicians trained in both HVAC and plumbing.
• 24/7 emergency response to heating failures in winter and burst pipes any season.
• Free on-site estimates and straightforward written pricing.
• Warranty-backed labor and ongoing maintenance plans to extend system life.

Why Locals Choose Granite State Mechanical Services

Residents and business owners in Merrimack pick Granite State Mechanical Services Merrimack NH for predictable pricing, quick emergency response, and a long-standing local presence. The team knows New Hampshire weather and housing stock, so recommendations are practical, not flashy. For routine checks, one-off repairs, or larger replacements, the company delivers steady work and clear communication.

Hours: Monday–Friday, 7:00 AM–5:00 PM. Technicians are on call around the clock for urgent needs.