Skip to Navigation Skip to Content

ribbon image Stock Up on Real OEM HVAC Parts for the Fall Season!  SHOP NOW

First Company E143 Relay, Heat Sequence

Log in to enable Quick Order
Manufacturer:
Manufacturer #:
E143
Parts Town #:
FIRSE143
Units:
Each
Fits Models:

First Company E143 Genuine OEM Replacement Part

A First Company E143 heat sequencer controls the staged operation of electric heat in compatible HVAC equipment.

  • Real OEM: Designed for the specified equipment to support proper heat sequencing.
  • Product Type: Heat Sequencer
  • Compatible Model: WSH6018A7RCFS10000000F, 20HX3, 12PHH10-240-4 RH
  • Length:
    2.75 in / 6.99 cm
  • Width:
    2.3 in / 5.84 cm
  • Height:
    1.75 in / 4.45 cm
  • Weight:
    0.145 lbs / 66 g