O'Brien Heating & Air Conditioning Has Your Solution for Economical, Efficient Heating and Cooling in the Main Line

Stay comfortable while keeping your costs affordable with a Lennox® Merit® Series packaged system from O'Brien Heating & Air Conditioning in the Main Line. These single-cabinet heating and cooling systems deliver the efficiency, comfort and dependability you expect from Lennox, all while delivering energy ratings of 13.00 SEER,* 7.70 HSPF** and 80% AFUE.***

13GEP Packaged Gas/Electric Unit

The 13GEP packaged unit delivers consistent, comfortable temperatures throughout the year. It uses gas heating in the winter and electric cooling in the summer months.

  • Efficiency ratings of 13.00 SEER*and 80% AFUE*** offer a high level of efficiency and comfort
  • Tubular heat exchanger for reliable heat transfer and remarkable airflow control
  • Internally-mounted outdoor fan reduces operating noiseand vibration
  • Dependable compressor strictly controls air temperature and humidity
  • Easy-access control panel
  • Corrosion-resistant, pre-painted steel cabinet is built to endure
  • 20-Year Limited Warranty on heat exchanger
  • 5-Year Limited Warranty on covered parts (this product may be eligible for valuable 10-year Limited Extended Warranty coverage)

13GEP Packaged Gas/Electric Unit
Efficiency Rating (SEER): 13
AFUE Rating: 80
Price Guide: $

13HPP Packaged Heat Pump

The 13HPP package heat pump filters heat from indoor air and carries it outdoors, making your home cool and comfortable. During the winter, it works in reverse to keep your home pleasant. This packaged unit is great for homes in warmer areas, like the Main Line.

  • Efficiency ratings of 13.00 SEER*and 7.7 HSPF** offer noteworthy efficiency and comfort
  • Internally-mounted outdoor fan lessens operating soundand vibration
  • Dependable compressor strictly regulates air temperature and humidity
  • Easy-access control panel
  • Corrosion-resistant, pre-painted steel cabinet is built to withstand the elements
  • 5-Year Limited Warranty on covered parts (this product may be eligible for valuable 10-year Limited Extended Warranty coverage)

13HPP Packaged Heat Pump
Efficiency Rating (SEER): 13
HSPF Rating: 7.7
Price Guide: $

Schedule an appointment online with O'Brien Heating & Air Conditioning in the Main Line to see if a Merit series packaged system will work for you, or to have your existing unit serviced. You can also reach us by phone at 610-626-2540. We look forward to serving you!


* 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.

*** Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.