Energy Efficient HVAC Products are Friendly for the Environment and Your Wallet.

Saving money on your monthly utility expenses is great. Being environmentally responsible makes things even better. You can get the best of both worlds with the energy efficient HVAC products we carry in Indian River County. At Custom Air Systems Inc, our variety of eco-friendly products runs the gamut – from refrigerants we use inside our cooling equipment to systems combined for the ultimate in whole-home comfort, you could see dramatically decreased utility bills. And, as always when you choose Lennox®, you’ll experience a comfortable home all year round.

Explore our energy efficient features below. Call us at 772-571-1080 to find out more about adding one of our energy efficient HVAC products to your Indian River County area home.


* SEER, or Seasonal Energy Efficiency Ratio, measures the cooling efficiency of your air conditioner or heat pump. A higher SEER rating means greater energy efficiency and more savings for you and the environment.

** Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.

  • Lennox Ultimate Comfort System
    Our Ultimate Comfort System is full of energy efficient and cutting-edge technologies that will adjust your heating and cooling temperatures in minor increments to maintain a consistent temperature and a minimal amount of energy.
  • Lennox Energy Efficient Air Conditioners
    At Custom Air Systems Inc, our Lennox® cooling products use an ozone-friendly, chlorine-free R-410A refrigerant that meets strict guidelines set by the U.S. Environmental Protection Agency (EPA). This refrigerant can help your system cool effectively, while lowering its environmental impact.
  • Lennox: First Air Conditioner with 26 SEER Rating
    We carry the first air conditioner to achieve a 26 SEER* rating which means it’s one of the most efficient cooling systems you can find. Plus, the XC25 can significantly lower your monthly utility bills without sacrificing the comfort you want.
  • Reduce Utility Bills
    Living in Indian River County doesn’t have to mean expensive utility bills. In fact, many of our HVAC products have earned the ENERGY STAR® label and high SEER* or AFUE** ratings because of their high efficiency, which can potentially decrease your annual energy expenses.
  • Dual Fuel Systems
    Pairing our gas furnace with an electric heat pump creates a dual fuel system that helps improve your systems’ operation efficiency. The gas heat is used only when it becomes too cold for the heat pump to run efficiently, which can help lower your energy costs and keep your home more comfortable.