All heat pumps operating in northern climates (below 35°F) normally need a supplemental heating source. Usually this is in the form of electric heating provided by the indoor unit. Other sources could be gas, oil, or hot-water back-up systems as well. The supplemental heat is also referred to as "second-stage" or "back-up" heating, with "first-stage" being the heat pump only. Emergency heat is when you use your supplemental heat (2nd stage) by itself, without the use of your heat pump (1st stage heat). The Emergency heat option is not available for non-heat pump systems.
If this feature is available to you, you can find it and turn it on by going to Modes > Emergency heat.
FREQUENTLY ASKED QUESTIONS
Perfect comfort is something we want you to experience long after you’ve purchased your Lennox® product. That’s why we offer a collection of resources that make it as easy as possible for you to get the answers and support you need.
What is Emergency Heat, and where do I turn it on?
Get answers from a Lennox® Dealer.
It's easy to find an expert Lennox Dealer who can help you make the most of your HVAC system.
View Now
