Frequently Asked Questions

• What 3-phase service parts are compatible with Daikin or Goodman commercial systems?

  Match by model and nameplate details. Use OEM parts when fit, firmware, or proprietary connectors matter; many contactors, breakers, and float switches are compatible if voltage, phase, and amperage ratings match.

• How do I choose between brand-specific and generic 3-phase replacement parts?

  Choose OEM for unit-specific controls or assemblies. Generic works for commodity items like contactors, capacitors, and copper fittings when you match coil voltage, amperage, size, and enclosure needs.

• Which safety switches or condensate monitoring parts (Aquaguard) are appropriate for 3-phase air handlers?

  Select a switch that fits the drain configuration (primary, secondary, or pan). These are typically low-voltage, phase-agnostic devices-just match capacity, mounting style, and wiring method.

• Are these 3-phase components suitable for light commercial rooftop or split systems?

  Yes. Verify environmental ratings, voltage/phase, and amperage. Ensure the contactor or breaker frame size and terminals match the equipment and conductors.

• What information do I need from my unit’s nameplate to match a 3-phase service part?

  Record model and serial, voltage and phase, MCA/MOP or FLA/LRA, control voltage, refrigerant type, and system tonnage. This ensures correct selection and safe operation.

• Do 3-phase electrical parts like breakers or contactors require a licensed electrician to install?

  Yes. For code compliance and safety, a licensed professional should perform lockout/tagout, wiring, and commissioning of 3-phase components.

• Are copper line or tubing repair parts included and how are sizes determined?

  Yes. Copper repair components are sized by outside diameter. Measure existing lines and follow the system’s design and tonnage; brazing should be done with nitrogen purge by a qualified tech.

• What is the return policy if a 3-phase service part is not compatible?

  Returns typically require items to be new and uninstalled; electrical parts are often non-returnable once opened or energized. Check terms before purchase and verify compatibility first.

• Can I use a single-phase component on a 3-phase unit?

  No. Components must match phase, voltage, coil ratings, and amperage. Using incorrect parts risks failure, nuisance trips, or equipment damage.

• Do these parts list SEER2, BTU, or HSPF2 ratings?

  No. Those are system efficiency metrics. Select parts by unit BTU/tonnage, refrigerant type, voltage/phase, and electrical ratings noted on the nameplate.