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If you know the specific manufacturer of your Heat Pump System - select the diagram below for specific wiring guidance.

Amana

American Standard /Trane

American Stabilis

Arco Snyder General Comfortmaker

Armstrong Air-Ease

Bard

B.D.P. Bryant -Day-Night_Payne

Carrier

Comfort_Air

Crispaire Marvair

Econar

Fedders

Florida

Friedrich

GEO

General Electric

Janitrol/ Tappan

Keeprite

Lennox

Lux

Martin Industries

Phillips

Rheem / Ruud

Seco

Squarr D/Sun

Trane A/S

Wesco / Addison

Westinghouse

White_Rodgers

Williamson

Zone Aire