When temperatures drop during the colder months, your HVAC system works hard to keep your home warm and comfortable. For homes equipped with a heat pump, the system usually operates efficiently by transferring heat from the outside to the inside. However, when the weather gets extremely cold, heat pumps may struggle to keep up, and that’s when emergency heat comes into play. But how do you know if your HVAC system has emergency heat, and how should you use it? In this article, we’ll explain what emergency heat is, how to identify if your system has it, and when it’s appropriate to use it.
What Is Emergency Heat?
Emergency heat, also known as “auxiliary heat,” is a backup heating option available in HVAC systems that use heat pumps. Heat pumps are highly efficient in moderate climates, as they transfer heat from the outside air to warm your home. However, when the temperature outside drops below a certain point, typically around 35°F, the heat pump becomes less effective. At this point, your system may switch to emergency heat to provide additional warmth.
Emergency heat is usually powered by an electric resistance heater or a gas furnace, depending on the type of system. It’s designed to keep your home warm when the heat pump can’t handle the cold on its own. However, emergency heat is less energy-efficient than the heat pump, which is why it’s meant to be used only in certain situations.
If you’re unsure whether your system has emergency heat or how to use it properly, it’s always a good idea to contact a professional for advice. Emergency HVAC repair near me Jersey City, NJ services provided by Platinum HVAC can help you better understand your system and ensure it’s functioning optimally.
How to Know if Your HVAC Has Emergency Heat
There are a few ways to determine if your HVAC system is equipped with emergency heat. Here are the most common methods to check:
1. Look at the Thermostat
The easiest way to tell if your HVAC system has emergency heat is by checking the thermostat. Most thermostats that control heat pumps will have a setting labeled “Emergency Heat” or “Aux Heat.” This setting allows you to manually switch the system to emergency heat mode. Here’s how to identify it:
- Emergency Heat Setting: Check for a button or switch on your thermostat labeled “EM Heat” or “Emergency Heat.” If you see this option, it means your system has a backup heating source, and you can activate it if needed.
- Auxiliary Heat Indicator: Some thermostats automatically switch to auxiliary or emergency heat when the outdoor temperature drops too low for the heat pump to function efficiently. In this case, you may see a light or icon on the thermostat that indicates the system is using emergency heat.
If you don’t see an “Emergency Heat” setting on your thermostat but suspect your system has this feature, contacting an HVAC professional can help clarify things. A emergency HVAC repair near me Jersey City, NJ service from Platinum HVAC can inspect your system and ensure it’s operating correctly.
2. Check the User Manual
If you’re unsure whether your HVAC system has emergency heat, the user manual is a great place to start. The manual will provide detailed information about your system’s features and how to use them. Look for sections that explain backup heating modes or emergency heat settings.
- Heating Modes Section: In the manual, there will likely be a section that describes the different heating modes available for your system, including emergency or auxiliary heat.
- System Specifications: You can also check the system specifications to see if emergency heat is listed as a feature.
If you’ve misplaced the user manual, most manufacturers offer digital versions online. Alternatively, contacting a trusted emergency HVAC repair near me Jersey City, NJ service like Platinum HVAC can provide the information you need and help you better understand your system.
3. Inspect the Heat Pump System
If you’re comfortable doing a bit of investigating, you can also inspect your HVAC system itself. Most heat pump systems with emergency heat will have an additional heating element, such as electric resistance coils or a backup furnace. Here’s how to check:
- Backup Heater: Look for an additional heating element attached to your heat pump. This could be electric heating coils or a gas furnace that serves as the backup heat source when temperatures drop too low.
- Wiring for Emergency Heat: In some cases, you may be able to see extra wiring that connects to the backup heating system. This wiring is typically tied to the thermostat and allows the system to switch to emergency heat when needed.
If you’re not sure what to look for or if you prefer a professional inspection, an HVAC technician can help. A emergency HVAC repair near me Jersey City, NJ expert can assess your system and confirm whether you have emergency heat.
4. Ask an HVAC Professional
If you’re still unsure whether your HVAC system has emergency heat, the best way to find out is by consulting an HVAC professional. A technician can perform a full inspection of your system, explain how it works, and show you how to use the emergency heat function properly.
Platinum HVAC offers emergency HVAC repair near me Jersey City, NJ services that can help you understand your system’s capabilities and ensure it’s functioning efficiently, especially during extreme weather.
When Should You Use Emergency Heat?
While emergency heat is a useful backup option, it’s important to use it only when necessary. Because it’s less energy-efficient than the regular heat pump operation, running emergency heat for extended periods can significantly increase your energy bills. Here are some situations where using emergency heat is appropriate:
1. Extremely Cold Weather
If the outdoor temperature drops below 35°F, your heat pump may struggle to extract enough heat from the air to keep your home warm. In this case, the system may automatically switch to emergency heat to maintain a comfortable indoor temperature.
- When to Activate It: If your thermostat has an “EM Heat” setting, you can manually switch to emergency heat if the heat pump isn’t keeping up with demand in extremely cold weather.
2. Heat Pump Malfunction
If your heat pump has stopped working due to a mechanical issue, such as a refrigerant leak or compressor failure, switching to emergency heat can provide temporary warmth until the system can be repaired. However, this should only be used as a short-term solution.
- What to Do Next: If your heat pump fails, contact a professional immediately for repairs. Searching for emergency HVAC repair near me Jersey City, NJ will connect you with local services like Platinum HVAC to address the issue and restore your system to full functionality.
3. Scheduled Heat Pump Maintenance
If your heat pump is undergoing maintenance or repairs, you may need to use emergency heat to keep your home warm while the primary system is offline. Be sure to switch back to the regular heating mode once the maintenance is complete.
Avoid Overusing Emergency Heat
While emergency heat is a valuable backup, it’s not designed to be used for long periods of time. Overusing emergency heat can lead to higher energy bills and unnecessary strain on the backup heating system. Whenever possible, rely on your heat pump’s regular operation, as it’s more efficient and cost-effective.
If you’re experiencing ongoing issues with your heat pump or emergency heat, it’s important to get a professional inspection to identify the root cause. Scheduling a service with emergency HVAC repair near me Jersey City, NJ experts from Platinum HVAC will help resolve any issues and ensure your system operates efficiently.
Conclusion
Knowing whether your HVAC system has emergency heat is essential for managing your home’s comfort during the colder months. You can determine if your system has this feature by checking the thermostat, reviewing the user manual, inspecting the heat pump, or consulting with an HVAC professional. Emergency heat is designed to provide backup warmth when your heat pump can’t handle extremely cold temperatures or when the system malfunctions.
While emergency heat can keep your home comfortable during extreme weather, it’s important to use it sparingly due to its higher energy consumption. If your heat pump fails or you notice issues with your HVAC system, don’t hesitate to search for emergency HVAC repair near me Jersey City, NJ and contact Platinum HVAC for prompt and reliable service.

