We’ve Got Energy Efficient Furnaces to Keep Your Family Warm All Winter A furnace shouldn’t leave you hanging in the middle of our the Main Line winters. In fact, at O'Brien Heating & Air Conditioning, we believe you should have a furnace that is energy efficient, works quietly and helps you save money. Our complete line of ENERGY STAR® qualified Lennox® gas and oil furnaces, which have reached or exceeded EPA guidelines for energy efficiency, will do just that. Our furnaces feature Lennox ingenuities like variable speed motors and PreciseComfort™ technology and work smarter, not harder, to deliver consistent heat with increased energy efficiency. Fewer temperature swings. Enhanced comfort. Less money. We like the sound of that. Each of our energy efficient furnaces are a great choice for your the Main Line area home. They can improve humidity control and air filtration, giving you improved indoor air quality. When you select a Lennox furnace from O'Brien Heating & Air Conditioning, you can stay comfortable throughout the season. Peruse our energy efficient gas and oil furnaces for more information. Gas Furnaces Oil Furnaces We’re experienced and able to help with any of your heating needs, whether it’s a furnace replacement or a furnace repair. Give O'Brien Heating & Air Conditioning a call at 610-626-2540 or make an appointment online to get started.