Experience Exceptional Comfort Year-Round with a Packaged Unit from O'Brien Heating & Air Conditioning When your indoor space is valuable to you, look to O'Brien Heating & Air Conditioning in the Main Line for a condensed solution that will keep your home comfortable season to season—a packaged system. An HVAC packaged unit is like a traditional split system; it’s just engineered to fit into a small cabinet for easy installation in virtually any residential setting To keep your indoor space available, the unit can be installed outside or on your roof. We understand that energy efficiency is a top priority when you’re selecting a packaged unit, just as it would be when selecing any other HVAC system. Our packaged units carry energy ratings up to 15.00 SEER* and 8.00 HSPF.** Plus, every unit in the Dave Lennox Signature® Collection are ENERGY STAR® qualified. All of our AC units have a lot to offer, and we’ve got a model for every budget. Find out more below. If you’re shopping for a new packaged unit or want an expert to help maintain yours, contact O'Brien Heating & Air Conditioning in the Main Line. We’re here to help. Call us at 610-626-2540 or make your appointment online today! * 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. ** HSPF, or Heating Seasonal Performance Factor, measures the heating efficiency of your heat pump. A higher HSPF rating means greater energy efficiency, more savings and is better for the environment. Dave Lennox Signature® CollectionElite® SeriesMerit® Series New!