In the complex world of home heating and cooling, the thermostat serves as the control center. Among its many functions, the "Emergency Heat" option can often be a bit mysterious. For homeowners, understanding what this feature does is crucial, especially during those chilly winter months. In this blog, we'll explore the concept of emergency heat with insights from Ocean Controls Limited, a trusted name in thermostat technology.

Many modern homes utilize heat pump systems for heating and cooling. A heat pump works by transferring heat from one place to another. In heating mode, it extracts heat from the outside air (even in cold weather) and pumps it into your home. However, when the outdoor temperature drops too low, the efficiency of the heat pump can decline significantly.

To supplement the heat pump's performance in extremely cold conditions, most heat pump systems are equipped with auxiliary heat. This is often an electric resistance heater that kicks in when needed. The emergency heat option on the thermostat is related to this auxiliary heat source.

The emergency heat setting on your thermostat is designed to be used when your primary heat source, usually the heat pump, is unable to maintain the desired temperature. This could be due to a malfunction of the heat pump, extremely cold outdoor temperatures (below the heat pump's effective operating range), or a power outage that disrupts the heat pump's normal operation. When you activate emergency heat, it bypasses the heat pump and directly uses the auxiliary heat source.

Unlike regular heating, where the heat pump tries to optimize energy usage by constantly adjusting based on the indoor and outdoor temperatures, emergency heat provides a more brute-force approach. It simply turns on the electric resistance heaters full blast to quickly warm the space. This can lead to higher energy consumption, which is why it's called "emergency" heat. Ocean Controls Limited thermostats are designed to clearly indicate when emergency heat is activated to help homeowners make informed decisions.

During a polar vortex or an unusually cold snap, when the outdoor temperature dips well below freezing, your heat pump might struggle to keep up. In such cases, turning on emergency heat for short periods can ensure your home stays warm. However, it's important to monitor its usage due to the increased energy cost.

If your heat pump stops working properly, emergency heat can be a temporary solution to keep your family comfortable until a professional technician can repair the issue. For example, if the heat pump is making strange noises or not heating at all, switching to emergency heat can provide immediate warmth.

When the power goes out and then comes back on, sometimes the heat pump needs time to reset and resume normal operation. In the meantime, emergency heat can be activated to maintain a livable temperature inside the house.

Most Ocean Controls Limited thermostats have a clearly labeled "Emergency Heat" button or option on the control panel. It may be a physical button that you press or an option within a menu on a touchscreen thermostat.

To activate emergency heat, simply press the appropriate button or select the option. The thermostat will usually display an indicator, such as an icon or a flashing light, to show that emergency heat is on. Monitor the temperature in your home and be aware of the energy usage. When the situation improves, turn off emergency heat to return to normal heating mode.

As mentioned earlier, emergency heat uses electric resistance heaters, which consume a significant amount of electricity. Running emergency heat continuously can lead to a spike in your energy bills. It's advisable to use it only when truly necessary and to consider alternative heating sources, like a fireplace or portable heaters, if possible.

Ocean Controls Limited thermostats often come with energy-saving features and programmable schedules. Even when using emergency heat, you can take advantage of these to minimize energy waste. For example, you can lower the temperature in unoccupied rooms or set the thermostat to turn off emergency heat during the warmest parts of the day.