For your home heating and air conditioning system, Trane’s 3 Ton 18 SEER 35000 BTU Split System Variable Speed Electric Communicating System is a solid option. This variable speed (V/S) Electric Communicating system has 3 major HVAC components – (1) Trane 3 Ton 18 SEER XV18 36000 BTU Variable Speed Air Conditioner Condenser 4TTV8036A1000B, (2) Trane 3 Ton 2-Stage Variable Speed Convertible & Multi 1/2 HP Air Handler TEM8A0C36V31DB and (3) Trane 10 kW (7.2-9.6 kW) Electric Heater BAYHTR1510BRKC with Breaker.