Thermostat at a Fixed Temperature
Below is a breakdown of the benefits and drawbacks of both approaches.
The Case for a Fixed Temperature
Many homeowners prefer a constant setting for the following reasons:
Reduced Wear and Tear: Keeping a steady temperature prevents the HVAC system from “short cycling” (turning on and off too frequently), which can extend its lifespan and reduce repair costs.
System Efficiency: HVAC units are often most efficient when maintaining a baseline temperature rather than trying to overcome a massive 10-degree difference all at once.
Home Preservation: A consistent temperature helps prevent wooden furniture, floors, and instruments from warping or cracking due to natural expansion and contraction caused by fluctuations.
Indoor Air Quality: Continuous operation allows the system to filter allergens and pollutants more effectively.
The Case for Adjusting (Setbacks)
The U.S. Department of Energy and most modern efficiency experts recommend adjusting your thermostat when you are away or asleep:
Significant Cost Savings: You can save up to 10% a year on heating and cooling by turning your thermostat back 7°-10°F from its normal setting for 8 hours a day.
Thermodynamic Reality: It is a myth that a furnace “works harder” to warm a house back up, negating savings. In reality, a house loses heat more slowly the lower the interior temperature is, the more energy you save, and the longer the house stays at a lower setting.
Environmental Impact: Lowering energy consumption directly reduces your carbon footprint and greenhouse gas emissions.
Summary of Recommended Settings
To balance comfort and cost, consider these industry standards:
Winter: Set to 68°F while awake and lower (around 60°F-62°F) while asleep or away.
Summer: Set to 78°F while home and higher (low 80s) when away.
The “5-Degree Rule” Many HVAC pros advise that minor adjustments of less than 10 degrees are the most efficient way to manage comfort without overworking the unit.
