About Alan Heating Air Conditioning, Inc. John Alan Macnider founded Alan Heating Air Conditioning, Inc. in Elmhurst in 1948. With ambitions to create a company known for customer satisfaction, he instilled his belief that a customer is not just a "sale" but a lifelong friend. Roger Alan Macnider joined his father in 1949 and has carried the tradition on. His grandson Michael Alan Macnider joined in 1977 and has since kept the same courteous professional service. Our team is fully trained on HVAC products, maintenance, technology and custom sheet metal. We make sure to be mindful of your home and put drop cloths down during our work. We strive to do honest, professional and high quality work for everything we do so you can enjoy a more comfortable home. We also offer a wide range of high technology and innovative Lennox® HVAC products, so you may find the most energy efficient and cost effective system for your home and budget. We’re committed to helping you make your home more comfortable. For heating and cooling services such as repair and maintenance, or replacement HVAC systems, you know who to call. Call Alan Heating Air Conditioning, Inc. in Elmhurst at 630-833-1100 to learn more, or schedule an appointment online to start working with us.