What is a typical setback temperature for a programmable thermostat used with gas heating?

A typical setback temperature for a programmable thermostat used with gas heating is generally in the range of 5-10°F. This range is effective for reducing heating costs while maintaining comfort levels in the home. By allowing the temperature to drop during times when the home is unoccupied or when occupants are sleeping, energy can be conserved significantly.

Setting the thermostat to lower temperatures during these periods can optimize energy efficiency without sacrificing too much comfort. A setback of 5-10°F is sufficient to reduce energy usage effectively; going much higher may result in diminished comfort and increased energy demands when the heating system needs to work harder to bring the temperature back up to normal levels.

The other ranges either might be too small to yield significant energy savings or are likely impractical for ensuring comfort during occupied times. Thus, the 5-10°F range strikes a balance that is often recommended for programmable thermostats in residential gas heating systems.