The leading provider of high-efficiency heating and cooling home comfort systems in the Main Line

From the beginning, Lennox has been creating HVAC systems incorporating the highest standards of quality and innovation. Whether it’s the SunSource® Home Energy System or the first air conditioner with a SEER efficiency rating greater than 25, we’re constantly attempting to set the bar higher. Providing you with the most comfortable home has always been a top priority for the team at O'Brien Heating & Air Conditioning, and we want to help you take your home’s comfort to a higher level.

Whether you want to have the highest efficiency in your neighborhood or you’re only looking for the perfect heating and cooling upgrade for your budget, we have a solution for you. When you go with O'Brien Heating & Air Conditioning you know you’re going to get the best heating and cooling repair and service provided from the best HVAC contractors in the Main Line.

It’s no wonder that Lennox has a reputation of quality and efficiency, given its 100+ year existence and history of being on the cutting edge of heating and cooling innovation. Feel the difference, with O'Brien Heating & Air Conditioning.