Thermostat: lifespan, maintenance and replacement

Typical lifespan: 10–15 years (about 10 years).

Maintenance schedule

• Check temperature accuracy — Every 6 months
• Replace batteries (if battery-powered) — Annually
• Clean dust from sensors — Annually
• Review and update schedule — Seasonally

Signs it needs replacing

• Temperature readings inaccurate
• HVAC short-cycling
• Unresponsive touchscreen
• No Wi-Fi connectivity (smart models)
• Display dim or blank

Tips

A smart thermostat can save 10–15% on heating and cooling bills with proper scheduling.