what is auxiliary heat

We have had some brutally cold days this winter, and we have probably not seen the last of them. You have probably had to turn your heat way up to stay warm in your home. And if you have a heat pump, you may have noticed AUX on your thermostat. This means that it is using auxiliary heat. Let us help explain what is auxiliary heat and what you should know about it.

Heat pumps are great for cost savings, as they use less energy than furnaces. However, when temperatures drop very low, they need to do something in order to maintain heat. They have a backup heating system when the pump itself is unable to get up to the desired temperature. This is the auxiliary heat.

Learn how your pump works to understand what is auxiliary heat

In order to truly understand what is auxiliary heat it is important to know how a heat pump works. Using coils and refrigerant, the pump draws heat out of the air outside and brings it inside. It then flows through the vents in your home. It does not even have to be that warm outside for this to work. However, when it is very cold, the pump can’t do it. At this point the auxiliary heat comes into play.

Ice is another issue that could cause the usage of auxiliary heat. If the HVAC system or coils freeze, the pump will not work. A built-in defrost cycle – when inside heat flows outside to melt the ice – usually fixes this. But while that takes place, the pump will switch to auxiliary heat mode.

Auxiliary heat is a regular function of a heat pump. It should not cause you any worry or concern. However, if you still find yourself shivering in your home, something is almost certainly wrong with your system. To find out for sure, just get in touch with Aspire Heating & Cooling. We will figure out the issue and make the right repair or replacement.

If you are an Aspire customer or you have a maintenance plan, with us, you can call us anytime. No matter when you need us – day or night – we can make sure you get the service you need.

Posted Under: Resources