Tranquility® (TRT) Two-Stage Rooftop Series
43000 - 88000 Btuh COOLING CAPACITY
35000 - 68000 Btuh AVERAGE COP
4.97 AVERAGE EER
14.93
The Tranquility® (TRT) Two-Stage Rooftop Series by ClimateMaster offers advanced energy efficiency with capacities ranging from 3 to 6 tons. Featuring Copeland Scroll Two-Stage compressors and intelligent iGate® 2 controls, these units ensure consistent performance and exceed ASHRAE 90.1 efficiency standards.
Find a Rep- Overview
- Features
- Specs
- Resources
Overview

Features
Standard Features
- All sizes 036 (3 ton) through 072 (6 tons) exceed ASHRAE 90.1 efficiencies
- Communicating DXM2.5 controls for reduced start-up, commissioning, and service time
- Copeland Scroll Two-Stage compressors
- Variable Frequency Drive (VFD) fan motor controls
- Eight standard safeties which include high/low pressure switches and electronic condensate overflow sensor standard
- Galvanized steel double wall construction, powder coated paint, and access doors with non-corrosive hardware
Configurable Options
- iGate 2 thermostats for remote monitoring, adjustments, and diagnostics via myUplink mobile app and website
- Extended range insulation for geothermal applications
- Internally mounted modulating water valves that vary water flow for maximized central pumping efficiency
- ClimaDry modulating condenser hot water reheat dehumidification
- MPC controls for interfacing with BACnet, Modbus, and N2 building management systems
- Factory installed internally mounted motorized water valves
- Manual, motorized, or modulating outside air dampers
- Factory installed electrical service disconnect
- Optional extended range insulation for geothermal applications
- Optional MPC controls for interfacing with BACnet, Modbus, and N2 building management systems
Performance Specifications (WLHP, PSC)
Full Load
Part Load
Resources
Related Products
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“With our research, ClimateMaster is number one. We don’t have any outside units—you can sit on the back porch without the unit clicking on or the fan running in the summertime. This being my last house, we really checked into geothermal, and it’s been the perfect solution.”
“Now I’ve got a certified home that is 78% more energy efficient than my neighbors and 48% more efficient than new builds on the market today. I’m saving about $1,750 to $1,800 a year, and as a bonus, I get free hot water as a byproduct of my geothermal system. It’s quiet—I can hear my neighbors’ air source heat pumps, but they don’t hear mine.”
“We have geothermal—our neighbors don’t, and I know they wish they did. It’s a clean heat, not as drying to the skin, and you can feel the difference. In 6.3 years, we’ll recoup our investment, and after that, it’s all savings. Just plain facts—it saves money. ClimateMaster was the right choice: professional, customer-oriented, and easy to work with.”