Hybrid Systems

Hybrid systems, also known as dual fuel systems, are becoming increasingly more popular on Delmarva, as more and more people are realizing the benefits of using a hybrid system. The most efficient packaged solution for year-round heating and cooling comfort, hybrid systems add efficiency to your heating and cooling system while subtracting from your monthly utility bill.

Hybrid systems combine the strength of a gas furnace with an electric heat pump. As outdoor temperatures change, the hybrid system automatically switches between the heat pump and the furnace, resulting in lower heating costs.  A Hybrid heat system reacts to the changing temperatures and automatically adjusts to the most energy efficient method available to heat or cool a home. When temperatures drop to 40 degrees or less, your heat pump begins to feel the pressure of trying to maintain a comfortable temperature. You’ll notice your system kicking on more often which means more cost. Carrier’s Hybrid Heat system automatically switches to your second heating source, usually a gas furnace, which becomes the most economical option to keep your family, customers or employees comfortable.

Add the efficiency of an electric heat pump to a gas furnace, and start subtracting from your monthly utility bill. It’s our most efficient packaged solution for year-round heating and cooling comfort.


Here is a good example and option for you, if you are in the market of a high efficiency unit.


hybrid heathybrid heat2


  • ENERGY STAR® qualified in all sizes
  • Superior summer dehumidification when managed by the Infinity control
  • Two-stage compressor; two-stage gas valve and variable-speed blower motor


  • Up to 15.5 SEER*
  • Up to 12 EER*
  • 8.0 HSPF*
  • Up to 80.1 AFUE
  • All sizes meet ENERGY STAR® qualifications


  • Compressor enhanced summer dehumidification when managed by the Infinity control
  • Hybrid Heat® system auto changeover to gas in colder temperatures
  • Sound: as low as 75 decibels1 in cooling mode


SEER – The Seasonal Energy Efficiency Ratio (SEER) is the measure of efficiency by which the cooling process of air conditioner and heat pump systems is rated. The higher the SEER number, the greater the efficiency, and therefore the greater the energy savings. 

EER – Energy Efficiency Rating (EER) measures cooling efficiency and is calculated by dividing a product’s BTU output by the watts of power it uses. Rule of thumb―higher is better. 

HSPF – Heating Seasonal Performance Factor (HSPF) measures the efficiency of the heating mode of heat pumps. The higher the number, the greater the efficiency and cost-savings.

AFUE – If you’re in the market for a gas- or oil-fired furnace, the Annual Fuel Utilization Efficiency (AFUE) rating is a helpful stat to know.
Displayed in percentages, the AFUE rating tells you how much of the fuel consumed by your furnace is used to heat your home and how much is wasted. The higher the AFUE rating, the greater the efficiency.