Commercial HVAC

Commercial HVAC Services

From boutique retail spaces to 100-unit multi-family builds, Duramax Heating & Cooling Inc. provides turn-key commercial HVAC design, installation, and maintenance across the Portland metro. Our NATE-certified, OSHA-trained crews handle everything from rooftop package units to advanced VRF systems—meeting tight schedules, strict code requirements, and demanding energy targets.

We coordinate directly with GCs, architects, and property managers, supplying stamped mechanical plans, detailed submittals, and post-install commissioning reports. With factory-authorized partnerships (Lennox, Mitsubishi, Trane, Carrier), Duramax ensures every project launches on time and runs at peak efficiency for years.

Exceptional Service

• Dedicated project managers & weekly progress updates

• Up-front bids with line-item transparency—no change-order surprises

• Safety-first crews with full PPE and site-specific JHAs

• 24/7 emergency response to minimize tenant or production disruptions

• Licensed, bonded, insured, and compliant with local and state mechanical codes

Everything We Offer

Design-Build & Plan-Spec HVAC – Load calculations, Manual N designs, BIM coordination, and stamped drawings.

Rooftop Package Units & Split Systems – Installation, crane lifts, curb adaptors, and factory start-up.

VRF / VRV & Mini-Split Solutions – Zoned comfort for offices, medical suites, and multi-family corridors.

Make-Up Air & Ventilation – DOAS units, commercial kitchen hoods, and energy-recovery ventilators.

Preventive-Maintenance Contracts – Quarterly filter changes, belt swaps, and predictive diagnostics with KPI reports.

Building Automation & Controls – BACnet or LonWorks integration, remote monitoring, and energy-usage dashboards.

With decades of commercial expertise, advanced project management, and a relentless commitment to client satisfaction, Duramax keeps Portland-area businesses running cooler, quieter, and more cost-effectively—year after year.