Professional Rooftop Repair in Chicago

Why Choose PHD?

Fast & Accurate Diagnostics

Trained & Certified HVAC Technicians

Same-Day/Next-Day Repair Available

Honest Repair Recommendations — No Upselling

Commercial and residential rooftop units work hard every day — and when they fail, comfort and operations can be impacted immediately. At PHD Heating & Cooling, we provide professional RTU repair, performed by licensed and insured HVAC technicians skilled in servicing all major rooftop brands, not just Carrier.

We repair:

Carrier, Trane, Lennox, York, Rheem, Ruud, American Standard, Goodman, Daikin, Allied, Bryant, Payne, and others.

Common RTU repair issues include:
• compressor failure
• blower motor problems
• electrical faults or board failures
• insufficient cooling
• refrigerant leaks
• frozen coils
• low airflow or duct pressure problems
• economizer malfunction

What sets us apart from big commercial HVAC companies is our slow, careful, technical approach. We do not rush through diagnostics. We inspect every component, trace the true root cause, and ensure the repair is done correctly the first time — using OEM-quality components and manufacturer-approved techniques.

We serve Chicago (West Loop, River North, Fulton Market, Bucktown, West Town) and suburbs including Elmhurst, Northbrook, Elk Grove Village, Wilmette, and Glenview.

Why Choose Us for RTU Repair?

• Licensed & Insured commercial HVAC specialists
• Repairs for all major rooftop brands
• Accurate, careful diagnostics
• OEM replacement parts
• Clean, professional, long-lasting work
• Honest communication and fair pricing
• Same-Day / Next-Day Service Available