Energy Savings

Understanding Your Thermostat: Settings That Save Money

May 17, 20246 min readBy Peninsula HVAC Team

The Energy-Saving Sweet Spots

Summer (Cooling):

  • When home: 78°F
  • Away/sleeping: 85°F or off
  • Each degree above 72°F saves ~3% on cooling costs

Winter (Heating):

  • When home: 68°F
  • Away/sleeping: 62°F
  • Each degree below 70°F saves ~3% on heating costs

Auto vs On: Fan Settings

  • AUTO: Fan only runs during heating/cooling cycles (recommended)
  • ON: Fan runs continuously (uses more energy but improves air circulation)

Smart Thermostat Benefits

Modern smart thermostats can:

  • Learn your schedule and adjust automatically
  • Be controlled remotely via phone
  • Provide energy usage reports
  • Integrate with other smart home devices
  • Automatically adjust for weather changes

Peninsula-Specific Tips

Our mild climate means:

  • You may not need AC on many days - open windows instead
  • Morning fog often keeps homes cool naturally
  • Coastal areas rarely need heating in summer

Programmable Schedule Example

Weekdays:
  • 6am-8am: 72°F (morning comfort)
  • 8am-5pm: 78°F (away)
  • 5pm-10pm: 72°F (evening comfort)
  • 10pm-6am: 68°F (sleeping)
Weekends:

Adjust based on your actual schedule

Peninsula Homeowner Takeaway

Energy savings usually come from several small fixes working together: airflow, thermostat strategy, clean coils, duct condition, and correct system sizing.

A higher bill with comfort problems is a diagnostic signal, not just a utility problem.

Use the article as a starting point, not a final diagnosis. HVAC symptoms can come from controls, airflow, electrical parts, ducts, refrigerant behavior, or equipment age.

If a simple filter, thermostat, or airflow check does not change the symptom, document what the system does before calling for service.

Best next diagnostic route

thermostatenergy savingssmart hometips

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