Second Shift Heating & Cooling
Check the service area

HEATING AND FURNACE ROUTE / FICTIONAL EXAMPLE

NO HEAT?

Start with the safety check. Then name what changed, check the example service area, and prepare the next call.

Check the service areaPrepare the fictional call

Second Shift does not provide furnace repair or heating service. This route demonstrates the copy and decision sequence for a residential HVAC site.

CALL ROUTE / 04 STEPS

  1. 01StateWhat changed?
  2. 02BoundaryIs the place in frame?
  3. 03CallWhat belongs in it?
  4. 04FaultDiagnosis before equipment.

LIFE SAFETY / EXIT THIS CALL PATH

GAS OR CARBON MONOXIDE GOES OUTSIDE THIS CALL PATH.

Smell natural gas or suspect a gas leak? Leave the area immediately. Do not use light switches, phones, appliances, or a garage-door opener inside. From outside, call SEMCO Energy Gas Company at 1-888-427-1427. Do not go back until SEMCO says the area is safe.

A sounding carbon-monoxide alarm needs emergency services. Get outside immediately and call 911. This follows U.S. Consumer Product Safety Commission guidance.

Source: SEMCO Energy Gas Company gas-leak guidance, checked 2026-07-15.

CURRENT SYSTEM STATE

NAME THE STATE YOU CAN OBSERVE.

A symptom starts the call. It does not finish the diagnosis. Record what changed and when. Leave gas, carbon-monoxide, smoke, and fire conditions with the emergency route above.

  • The thermostat says heat is on, but the room temperature is falling.
  • The furnace starts and stops.
  • Air moves through the vents, but it feels cold.
  • The system makes a new noise.
  • The furnace or blower stays quiet.
  • Water appears near the equipment.
SERVICE AREA / EXAMPLE FRAME

CHECK THE EXAMPLE BOUNDARY.

Named places demonstrate the interface. Second Shift serves no real address.

EXAMPLE LIST / 03 PLACES

  • 01Port Huron
  • 02Marysville
  • 03Fort Gratiot
  • --Final boundary remains open
Check the service area

CALL PREPARATION / 06 DETAILS

HAVE THE CURRENT STATE READY.

  1. Example city or ZIP code.
  2. Furnace, boiler, heat pump, or unknown equipment.
  3. Thermostat setting and room reading.
  4. Air state at the vents.
  5. New sound, odor, water, or repeated cycling.
  6. When the change started and what has already been checked.

The simulated request path uses fixed selections and sends nothing. It asks for no name, street address, email, or phone number.

Prepare the fictional call

DIAGNOSTIC VISIT

FIND THE FAULT. THEN PRICE THE WORK.

The diagnostic visit begins with the reported change and the equipment involved. The findings should separate the failed part, the condition of the rest of the system, and any house input that changes the work.

A homeowner should leave with the diagnosed fault, the proposed repair, the price, and the next choice if the repair does not hold.

THREE SEPARATE DECISIONS

KEEP EACH ROUTE VISIBLE.

01

REPAIR

Repair needs a named fault, a defined scope, a price, and any warranty that applies to the work.

02

REPLACEMENT

Replacement needs the house, current equipment, sizing, installation scope, controls, and total price.

03

MAINTENANCE

Seasonal maintenance belongs after the current fault. A real plan states visits, exclusions, billing, and scheduling.