Light Commercial HVAC Diagnostics Specialist

A day in the life

You start your morning reviewing the day’s calls, confirming parts on your truck, and updating your service logs. By mid-morning, you’re on a rooftop unit, pinpointing an airflow issue. After lunch, you’re in a light commercial space troubleshooting a high-velocity system, then walking a customer through options to boost comfort, efficiency, and safety. You wrap the day by mentoring a junior tech on refrigerant best practices and reconciling truck inventory so tomorrow runs even smoother.

Where you’ll make an impact

Detmer Mechanical is now part of Ace Hardware, and through Ace Hardware Home Services we’re Bringing Helpful to Your Home. Ace has served neighbors for a century, and today we extend that helpful spirit into residential maintenance and repair—plumbing, heating, cooling, electrical, handyman, and painting—delivered with the trusted, friendly service homeowners expect.

Why you’ll love it here

• Join a team grounded in integrity, excellence, and a positive attitude.
• Work hands-on across a wide range of HVAC systems.
• Grow with leaders who encourage mentoring and professional development.

What you’ll handle

• Diagnose, service, and repair light commercial HVAC systems: forced-air, steam, hot water, oil, high-velocity, and ductless units.
• Use specialized tools and techniques to solve airflow, fuel, refrigerant, and electrical challenges.
• Educate customers on comfort, efficiency, and safety improvements.
• Coach junior technicians to build their technical skill and confidence.
• Maintain accurate service documentation and keep truck inventory organized.

What you bring

• 2–5 years of HVAC experience and strong industry knowledge.
• EPA Universal Certification.
• Valid driver’s license with a clean driving record.
• Dependable work ethic, growth mindset, and team-first approach.
• Calm under pressure and a steady contributor to a positive team dynamic.

Physical requirements

• Lift up to 50 lbs and work on ladders, in crawl spaces, and across varied terrain.
• Comfort working outdoors in heat, cold, and changing conditions.

Core proficiency

HVAC

If you’re ready to help neighbors feel comfortable, safe, and cared for—while advancing your craft—this role is for you.