Have you ever thought about why the temperature inside your home or office remains consistent no matter what time of year it is? The answer lies in your Unitary Products Group (UPG) Furnace – a sophisticated heating system trusted by millions of proud homeowners and business owners around the world. A UPG Furnace not only provides you with regulated indoor temperatures, but it has been designed to make use of extreme efficiency ratings so you can reduce your energy bills while still enjoying unrivaled comfort levels in the building of your choosing. But what is an Unitary Products Group Furnace? In simple terms, an UPG Furnace is an integrated unit that performs multiple functions such as heating, cooling, dehumidifying and air filtration all in one device.