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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.

Will Preventative Maintenance Keep My Office More Comfortable Year-Round?

Will Preventative Maintenance Keep My Office More Comfortable Year-Round?

January 7th, 2026|3 min read

What Is Preventative Maintenance for HVAC and Why Is It Important?

Preventive Maintenance | HVAC

What Is Preventative Maintenance for HVAC and Why Is It Important?

December 24th, 2025|3 min read

Is Your HVAC System Putting Your Tenants at Risk?

Preventive Maintenance | HVAC

Is Your HVAC System Putting Your Tenants at Risk?

December 15th, 2025|4 min read

Is an HVAC Preventative Maintenance Contract Plan Really Worth It?

Preventive Maintenance | HVAC

Is an HVAC Preventative Maintenance Contract Plan Really Worth It?

December 5th, 2025|3 min read

Can a Preventative Maintenance Contract Help With Indoor Air Quality and Allergies?

Preventive Maintenance | HVAC

Can a Preventative Maintenance Contract Help With Indoor Air Quality and Allergies?

November 24th, 2025|4 min read

What to Think About Before Renovating Your Warehouse

HVAC | Plumbing

What to Think About Before Renovating Your Warehouse

October 31st, 2025|4 min read

How Much Energy Does Your Commercial HVAC System Use?

HVAC

How Much Energy Does Your Commercial HVAC System Use?

October 17th, 2025|4 min read

Can a Building Management System Save Your Commercial Building Money?

HVAC

Can a Building Management System Save Your Commercial Building Money?

October 10th, 2025|4 min read

Why Older Commercial Buildings in New England Waste So Much Energy

HVAC

Why Older Commercial Buildings in New England Waste So Much Energy

October 3rd, 2025|5 min read

5 Reasons Massachusetts Commercial Energy Bills Are So High

HVAC

5 Reasons Massachusetts Commercial Energy Bills Are So High

September 22nd, 2025|4 min read