Commercial Rooftop Unit (RTU) HVAC Repair & Maintenance
Keep Your Facility Compliant, Energy-Efficient, and 100% Operational.
When a rooftop unit drops, your entire operation stalls. Stocker Appliance Repair, LLC delivers advanced diagnostic troubleshooting, component-level electrical repairs, and structured maintenance loops designed to maximize equipment life and protect your bottom line.
Core Capabilities: Our RTU Service Spectrum
We provide comprehensive mechanical and electrical workflows for all major commercial packaged rooftop systems (Trane, Carrier, Lennox, York, and more).
- Emergency Diagnostics & Component Repair: Rapid troubleshooting of failed compressors, faulty blower motors, condenser fans, and advanced electrical control boards to get your climate loops back online fast.
- Economizer Calibration & Optimization: Specialized testing of dampers, actuators, and outdoor air sensors to ensure your system leverages free cooling properly, dropping your monthly energy spend.
- Gas & Electric Heating Sections: Comprehensive safety inspections, heat exchanger crack detection, and ignition control troubleshooting before the New England winter hits.
- Airflow & Ventilation Infrastructure: Belts, pulleys, and high-efficiency filter changes to manage static pressure and guarantee clean, OSHA-compliant indoor air quality.
Why Facility Managers Partner with Stocker
⚡ Minimal Disruption
We coordinate crane lifts, major teardowns, and high-impact repairs around your operational hours to keep tenant complaints and business interruptions at absolute zero.
📉 Lower Lifecycle Costs
A poorly maintained RTU can burn up to 30% more energy and fail years ahead of its time. Our detailed technical approach pinpoints minor component wear before it causes a catastrophic system blowout.
📋 Full Compliance & Documentation
From detailed refrigerant tracking to itemized structural service sheets, we provide the clean auditing and reporting that asset managers and corporate compliance teams demand.
The Commercial PM Framework: Stop Reactive Spending
Don't wait for the rooftop alarms to sound. We offer customized Commercial
Preventative Maintenance (PM) Agreements scaled to your facility’s exact tonnage and usage requirements.
Our seasonal checks cover:
- Spring/Summer Prep: Coil cleaning, refrigerant charge verification, electrical contactor checks, and belt tension adjustments.
- Fall/Winter Prep: Burner assembly cleaning, heat exchanger safety audits, and exhaust fan testing.
Ready to Lock In Peak Efficiency?
Whether you have an immediate RTU breakdown or want a competitive quote on a multi-unit preventative maintenance contract for your property portfolio, our team is ready to deploy.
[Contact Our Commercial Dispatch Team]

