Intermittent AC that works some days but not others can be caused by marginal refrigerant charge, failing electrical components, or temperature‑sensitive issues that show up during Ann Arbor’s rapid spring and fall weather swings.
- Customer reported symptoms: “AC works sometimes,” “intermittent AC,” “cold one day, warm the next,” “AC cuts in and out.”
- Weather impact: Large day‑to‑night temperature swings can cause marginal or defective sensors, relays, and pressure switches to misbehave in southeast Michigan.
- Likely causes: Loose electrical connections, failing pressure switches, weak compressor clutch coil, or low refrigerant hitting the cutoff threshold.
- Testing: A combination of AC system pressure readings, electrical testing, and real‑world road testing during typical Ann Arbor driving conditions.
Hoover Street Auto Repair can chase down tricky intermittent AC problems and get you consistent cooling, whether it’s a chilly morning or a hot afternoon in Ann Arbor.