Technical Support
Phase Converters for HVAC & Refrigeration
Application Guide · HVAC & Refrigeration
Phase Converters for HVAC & Refrigeration
Walk-in coolers, rooftop units, ice plants, and large condenser fans — 7.5 to 50 HP compressors running on single-phase service.
Get a Free Size Recommendation Call (602) 962-8859Compressor Duty Required
HVAC compressors are high-LRA loads — always spec the NLA (compressor duty) model. A standard NL converter will trip or fail to start scroll and reciprocating compressors.
Walk-In Coolers & Freezers
Refrigeration compressors cycle on and off all day. AutoLink protects the unit during power blips and ensures clean restarts without manual intervention.
Packaged Rooftop Units
RTUs often have 3–20 HP compressors plus fan motors. Phoenix sizes for the total connected load with enough headroom for simultaneous starts.
Ice Plants & Large Condensers
Industrial ice makers and large condenser fan arrays need steady, balanced three-phase output. Phoenix precision-balanced output stays within 3% leg-to-leg.
Equipment Brands
Carrier, Trane, Lennox, York, Daikin, Copeland, Bitzer, Heatcraft, Hussmann, Tyler, Manitowoc, Scotsman, Hoshizaki
Not Sure What Size You Need?
Share your compressor HP and model and we'll recommend the correct NLA unit.
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📞 (800) 417-6568Free sizing help • Lifetime warranty • Made in USA • Mon–Fri 7AM–5PM MST