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John Flaherty

John Flaherty is the Senior Director of Business Development at Harold Brothers Mechanical, where he plays a key role in fostering client relationships and driving strategic growth. With nearly two decades of experience holding a real estate license, John brings a deep understanding of business development and market dynamics to his role. Before joining Harold Brothers, John dedicated 15 years to education administration at Boston College High School, where he helped shape institutional advancement efforts. A proud alumnus of BC High, he continues to serve on the school's Alumni Advisory Council, strengthening connections within the community. As a contributing author for Harold Brothers Mechanical, John leverages his diverse professional background to provide insightful articles on industry trends, business strategies, and company developments.

HVAC | Plumbing

What to Think About Before Renovating Your Warehouse

October 31st, 2025|4 min read

HVAC

How Much Energy Does Your Commercial HVAC System Use?

October 17th, 2025|4 min read

HVAC

Can a Building Management System Save Your Commercial Building Money?

October 10th, 2025|4 min read

HVAC

Why Older Commercial Buildings in New England Waste So Much Energy

October 3rd, 2025|5 min read

HVAC

Why Massachusetts Commercial Energy Bills Are So High in 2025

September 22nd, 2025|4 min read

HVAC

What Are the Incentives for Energy-Efficient HVAC in Massachusetts?

September 19th, 2025|4 min read

HVAC | Plumbing | VRF

What to Know before Renovating your School

September 1st, 2025|5 min read

Preventive Maintenance | HVAC

Top 5 Commercial HVAC Maintenance Providers in Massachusetts

August 22nd, 2025|4 min read

What to Think About Before Renovating Your Lab

August 11th, 2025|3 min read

HVAC | Plumbing

Building Maintenance Practices That Work

August 4th, 2025|4 min read