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

Saving money on your monthly utility expenses is great. Helping the environment makes things even better. You can do both with the energy efficient HVAC products we offer in Keokuk. At WM J Kraus & Son, our collection 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 significantly lower utility bills. And, as always when you choose Lennox®, you’ll experience a comfortable home throughout the year.

Check out our energy efficient features below. Call us at 319-524-3714 to learn more about adding one of our energy efficient HVAC products to your Keokuk 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 bursting with energy efficient and cutting-edge technologies that will adjust your heating and cooling temperatures in minor increments to preserve a consistent temperature and a minimal amount of energy.
  • Lennox Energy Efficient Air Conditioners
    At WM J Kraus & Son, our Lennox® cooling products use an ozone-friendly, chlorine-free R-410A refrigerant that meets strict guidelines laid out by the U.S. Environmental Protection Agency (EPA). This refrigerant can keep your system cooling effectively, while lowering the impact on the environment.
  • Lennox: First Air Conditioner with 26 SEER Rating
    We sell the first air conditioner to be rated 26 SEER* which means it’s one of the most efficient cooling systems available. Plus, the XC25 can substantially reduce your monthly utility bills without sacrificing the comfort you want.
  • Reduce Utility Bills
    Living in Keokuk doesn’t have to mean outrageous utility bills. In fact, a number of our HVAC products have earned the ENERGY STAR® label and high SEER* or AFUE** ratings because of their energy efficiency, which can potentially save on your yearly utility expenses.
  • Dual Fuel Systems
    Combining our gas furnace with an electric heat pump creates a dual fuel system that helps enhance your systems’ operation efficiency. The gas heat is solely used 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.