Hammack Service Company Has Your Solution for Economical, Efficient Heating and Cooling in Richardson.

Keep comfortable while keeping your costs under control with a Lennox® Merit® Series packaged system from Hammack Service Company in Richardson. With energy ratings of 13.00 SEER,* 7.70 HSPF** and 80% AFUE,*** these single-cabinet heating and cooling systems deliver the efficiency, comfort and dependability you expect from Lennox.

13GEP Packaged Gas/Electric Unit

The 13GEP packaged unit provides steady, comfortable temperatures throughout the year. It is powered by gas heating in the wintertime and electric cooling in the summer.

  • Efficiency ratings of 13.00 SEER*and 80% AFUE*** provide notable efficiency and comfort
  • Tubular heat exchanger for steadfast heat transfer and remarkable airflow control
  • Internally-mounted outdoor fan lessens operating soundand vibration
  • Dependable compressor precisely regulates air temperature and humidity
  • Easy-access control panel
  • Corrosion-resistant, pre-painted steel cabinet is built to last
  • 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: $

Schedule an appointment online with Hammack Service Company in Richardson to find out if a Merit series packaged system could work for you, or to have your existing unit serviced. You can also contact us by phone at 972-669-9192. 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.