Lennox 17W56 Transformer Els PW 17895 optimizing HVAC energy efficiency

optimizing HVAC energy efficiency

Technicians typically observe "clicks" without ignition

High-Durability Construction: Heavy-duty bakelite ensures HVAC control component stability against temperature fluctuations and mechanical wear

The electrical interface consists of standard 1/4-inch quick-connect terminals

and Coleman central air units

Lennox 17W56 Transformer Els PW 17895 optimizing HVAC energy efficiencyThe Lennox 17W56 transformer, also identified as model LB 111888A, is a heavy duty Class 2 transformer engineered for precision voltage step down in residential and commercial HVAC systems. This 40VA control transformer features a primary input of 120V AC at 60Hz and a stabilized 24V AC secondary output, making it the standard HVAC 24V power supply for critical components such as furnace control boards, 24 volt contactors, and digital thermostats.