Definition
The sequence that starts electric heating: thermostat call, control board, sequencer or relay, breaker, blower, and heat strip operation. In CWH's market, these are the common troubleshooting points for no-heat calls.
Why it matters in the Wenatchee Valley
The Valley's 100° summers, single-digit winters, and orchard dust work HVAC equipment harder than most climates — so terms like this show up on real estimates here. Use it to ask sharper follow-up questions, and if a quote doesn't add up, our free second opinion reviews it line by line.