Falls Mechanical Services LLC Has Your Solution for Economical, Efficient Heating and Cooling in Great Falls

Stay comfortable while keeping your costs manageable with a Lennox® Merit® Series packaged system from Falls Mechanical Services LLC in Great Falls. 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 year round. It uses 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 dependable heat transfer and exceptional airflow control
  • Internally-mounted outdoor fan lessens operating volumeand vibration
  • Dependable compressor strictly regulates 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 pulls heat from indoor air and carries it outdoors, keeping your home cool and comfortable. When it’s cold outside, it works in reverse to keep your home warm. This packaged unit is perfect for homes in warmer areas, like Great Falls.

  • Efficiency ratings of 13.00 SEER*and 7.7 HSPF** deliver notable efficiency and comfort
  • Internally-mounted outdoor fan cuts down operating noiseand vibration
  • Dependable compressor precisely regulates air temperature and humidity
  • Easy-access control panel
  • Corrosion-resistant, pre-painted steel cabinet is built to endure
  • 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 Falls Mechanical Services LLC in Great Falls to discover if a Merit series packaged system will work for you, or to have your existing unit serviced. You can also contact us by phone at 406-761-SAVE. 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.