Learn the Lingo: HVAC Tech Talk


Confused by HVAC lingo? Believe it or not, it’s not meant to confuse you. It’s actually meant to make understanding and buying the equipment easier. These terms allow you to compare apples to apples among units in the same fuel category. Knowing what the terms listed here mean will come in handy. Get to know these terms and you’ll be talking like a pro in no time!

  1. SEER: The seasonal energy-efficiency ratio (SEER) rates how many Btu an air-conditioning unit will remove for each watt of electricity consumed. The higher the SEER, the less you spend on operating costs. Federal law mandates a minimum SEER of 10 for all new air-conditioning units.
  2. Tonnage: An air-conditioning ton equals 12,000 Btu per hour. That means a three-ton air conditioner can remove about 36,000 Btu of heat per hour from your home.
  3. AFUE: The annual fuel-utilization efficiency estimates how much heat a unit delivers for every dollar spent on fuel. The higher the AFUE, the lower your heating bills.

Service Legends cares about your comfort. We’re the world-class provider of residential home services such as Heating, Air Conditioning, Geothermal, and Indoor Air Quality. Our goal is always comfort, reliability, and peace of mind in your home. Give us a call today to find out more and to schedule your spring tune-up! Visit Service Legends at

515-657-6634Request Appointment Online