McQuay Parts

McQuay Commercial HVAC Parts

McQuay is a commercial HVAC manufacturer now owned by Daikin, serving businesses with reliable air conditioning and heating systems for offices, retail spaces, and industrial facilities. When your McQuay unit stops cooling or heating, the right OEM parts restore performance quickly.

Common McQuay failures include run capacitors (the #1 commercial AC issue), contactors that won't engage the compressor, fan motors that quit spinning, and control boards that lose communication. Repair Clinic carries genuine McQuay parts for rooftop units, split systems, and packaged equipment — all backed by model number verification to ensure exact compatibility.

• Run capacitors: compressor or fan motor won't start; dual-capacitor units most common
• Contactors: outdoor unit clicks but won't run; pitted or burned contacts prevent engagement
• Fan motors: condenser fan doesn't spin; loss of cooling efficiency or complete failure
• Control boards: no display, error codes, or unresponsive thermostat communication
• Thermistors and sensors: incorrect temperature readings or unit cycles on/off erratically

Enter your McQuay model number to find the exact OEM parts you need — commercial HVAC downtime costs money, and OEM parts ship fast.

McQuay Commercial HVAC Parts — Frequently Asked Questions

What's the most common McQuay HVAC failure?

Run capacitors fail more often than any other McQuay part. The capacitor stores and releases energy to start the compressor and fan motors. When it fails, you'll hear the unit click on but the compressor won't engage, or the outdoor fan won't spin. It's a $20 to $50 part that often saves a service call.

How do I find my McQuay model number?

McQuay model numbers are stamped on the nameplate, typically mounted on the side or back of the outdoor condenser unit (for split systems) or on the equipment cabinet itself. The model number starts with letters like 'PB' or 'PH' followed by numbers. Take a photo of the nameplate and use Repair Clinic's model lookup tool to confirm the exact part numbers for your system.

Are McQuay and Daikin parts interchangeable?

McQuay is now manufactured by Daikin, but McQuay model specifications are distinct. Always use your McQuay model number to order parts — Daikin-branded equivalent parts may have different electrical specs or mounting configurations. Repair Clinic's lookup confirms the correct OEM part for your McQuay model.

What should I check before replacing a McQuay capacitor?

Verify the µF (microfarad) rating and voltage on the old capacitor — the replacement must match exactly or the motor may overheat. Use a multimeter to test if the capacitor has lost its charge (test continuity). If the capacitor is visibly swollen or leaking, replacement is certain. Always replace the capacitor before assuming the compressor or motor has failed.

Order Brand-Level Mcquay Replacement Parts Online

Ordering brand-level mcquay parts online is simple and gives you access to OEM options across every major brand. With same-day shipping on most in-stock items, you'll have your replacement part fast, minimizing downtime. Our model/part number lookup finds the exact OEM part for your unit, and every order is backed by our 365-day return policy and price-match guarantee. Browse our repair help section for troubleshooting tips, part testing guides, and step-by-step installation videos for your specific product.

McQuay Model Number: Where to Look

On McQuay heating and cooling equipment, the model number is usually printed on the data plate or rating label. Check the side of the cabinet, the exterior nameplate, or inside an access panel, depending on whether you have an air conditioner, heat pump, or air handler. Copy the complete model number, including letters, numbers, and any separators. Enter it in the search bar to filter the full McQuay parts catalog to parts that fit your specific unit. Using the complete number helps separate similar equipment models and gives you a faster, more accurate match, so you can order with confidence knowing the fit is right.