Climate Master Click images to go to Climate Master website. Tranquility 30 Two-Stage (TE) Digital Series Tranquility 30 Two-Stage (TT) (Climadry reheat only) Series Tranquility 22 High Efficiency (TZ) Series Tranquility 22 Two-Stage Compact (TY) Series Tranquility 20 Single-Stage (TS) Series Tranquility 16 Compact (TC) Series Tranquility Compact (TC) Belt Drive Series Tranquility High Efficiency (TR) Series Tranquility Vertical Stack (TSM) Series Tranquility Vertical Stack (TSL) Series Tranquility Large Vertical (TL) Series TRC-unitTranquility Console (TRC) Series Tranquility Rooftop (TRE) Series RX Energy Recovery (ERV) Module – Unitized (matched with TRE Rooftop) RX Energy Recovery (ERV) Module – Standalone Tranquility Modular Water-to-Water (TMW) Series Tranquility Modular Water-to-Water (TMW) Series Tranquility (TOV) Series Tranquility (TOH/R) Series