Welcome To Allied Air Conditioning and Heating For more than 40 years, Allied Air Conditioning & Heating has been dedicated to the maintenance and preservation of your cooling and heating system. We are proud to serve our residential and commercial clients in Arlington Heights, Libertyville, Palatine and the surrounding areas. Offering the highest in quality for both equipment and services, Allied stands out among other air conditioning and heating contractors by specializing in prompt response and tailored attention. Rather than rush to replace your appliances, we make every effort to make the originals last longer, saving you time and money in the meantime, and building a relationship for the long haul. When air conditioner, furnace and boiler repairs just won't cut it, we offer the finest replacements at competitive prices. Taking it a step further, we stand behind our work with two year guarantees on air conditioning work and lifetime guarantees on heating system work. When you need the best air conditioning and heating repair company in the region, call Allied Air Conditioning & Heating. It will be our pleasure to assist you in Arlington Heights, Libertyville, Palatine and beyond. Call today!