
A firmware update installs new software on smart HVAC equipment, thermostats, or connected water heaters. Updates can improve efficiency, fix bugs, enhance safety features, and add new controls or diagnostics. Keeping firmware current helps systems run securely and at peak performance.
/ˈfɜːrmwɛər ˈʌpdeɪt/
A firmware update installs new software on smart HVAC equipment, thermostats, or connected water heaters. Updates can improve efficiency, fix bugs, enhance safety features, and add new controls or diagnostics. Keeping firmware current helps systems run securely and at peak performance.
Why do firmware updates matter for HVAC and water heaters?
They improve efficiency, fix bugs, and keep smart controls secure and reliable.
Source: The Cooling Company

Firmware updates improve performance and reliability.
A homeowner updates a smart thermostat and connected water heater to gain better scheduling, efficiency tweaks, and new energy reports.
Use a stable Wi-Fi connection and avoid power interruptions during updates. Register devices to receive alerts.
“Use a stable Wi-Fi connection and avoid power interruptions during updates. Register devices to receive alerts.”
Some manufacturers use firmware updates to refine energy-saving algorithms and extend equipment life.
Do firmware updates change how my HVAC system runs?
Sometimes. Updates can improve control logic, efficiency, or error handling.
Can I skip firmware updates?
You can, but you may miss important safety, performance, or security fixes.
Who should perform firmware updates?
Homeowners can update smart thermostats, but some HVAC equipment may require a technician.
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