Short Answer
Overview
A permanent hold on a thermostat is a function that overrides the device’s programmed schedule indefinitely. When activated, the heating or cooling system maintains a specific temperature setting until the user manually changes it or cancels the hold. This differs from a temporary hold, which reverts to the scheduled program at the next set time period. This feature is standard on most digital programmable and smart thermostats.
History / Background
The concept of holding a temperature setting evolved with the transition from manual dial thermostats to programmable digital units in the late 20th century. Early mechanical thermostats maintained a constant temperature by default, as they lacked scheduling capabilities. As energy conservation became a priority in the 1970s and 1980s, programmable thermostats were introduced to automate temperature reductions during unoccupied times. The permanent hold feature was retained as a user override option to accommodate irregular schedules or vacations without deleting the stored program.
Importance and Impact
This setting significantly influences energy consumption and HVAC system wear. Using a permanent hold during extended absences can prevent unnecessary heating or cooling of an empty home, potentially saving energy. Conversely, leaving a permanent hold active during normal occupancy periods negates the energy-saving benefits of a programmed schedule. Proper use ensures comfort during routine changes while maintaining overall system efficiency.
Why It Matters
Understanding this function is essential for homeowners seeking to balance comfort with energy efficiency. It allows users to adapt their climate control to unexpected schedule changes, such as working from home or going on vacation, without reprogramming the entire week. Misuse can lead to higher utility bills, making knowledge of the feature practically relevant for cost management and environmental impact.
Common Misconceptions
Permanent hold saves more energy than a schedule.
It only saves energy if the held temperature is efficient for the current occupancy status; otherwise, it wastes energy compared to an optimized schedule.
Permanent hold deletes the programmed schedule.
It temporarily overrides the schedule without deleting it, allowing users to resume programming later.
FAQ
What is the difference between permanent and temporary hold?
A permanent hold maintains the temperature indefinitely until manually changed, while a temporary hold reverts to the programmed schedule at the next set time period.
Will using permanent hold increase my energy bill?
It depends on the setting; if the held temperature is inefficient for the occupancy status, it can increase costs compared to an optimized schedule.
How do I cancel a permanent hold setting?
Most thermostats have a 'Run Schedule' or 'Cancel Hold' button that restores the programmed temperature settings immediately.
Leave a Reply