Tranquility® (SE) Premier Series
29000 - 81400 Btuh COOLING CAPACITY
25300 - 72000 Btuh AVERAGE COP
5.34 AVERAGE EER
16.84
The Tranquility® (SE) Premier Series delivers exceptional efficiency and quiet operation, making it a prominent choice in geothermal heating and cooling. With features like the vFlow® modulating water valve and variable-speed water pump, this series ensures reliable performance for both commercial and residential applications.
Find a Rep- Overview
- Features
- Specs
- Resources
Overview

Features
Standard Features
- Sizes 006 (½ ton, 1.8 kW) through 072 (6 tons, 21.1 kW)
- Refrigerant Detection System (RDS) (mandatory on size 060 and 072, optional for sizes 006-048)
- Communicating DXM2.5 controls for reduced startup, commissioning, and service time
- Part-load operation significantly lowers annual operating costs
- Unique double-isolation compressor mounting for quiet operation
- Field-convertible discharge-air arrangement for horizontal units
- Insulated divider and separate compressor/air handler access panels
Configurable Options
- vFlow® unit-integrated modulating water valve for maximum water-flow control (replaces traditional motorized water valve and autoflow regulator)
- vFlow® unit-integrated variable-speed water pump for single-pipe systems
- BACnet, Modbus, and Johnson Controls N2 options for Building Management Systems (BMS)
- iGate® 2 thermostat for remote monitoring, adjustments, and diagnostics via MyUplink mobile app and website
- Extended-range insulation for geothermal applications
- Domestic Hot Water Generator (HWG)
- Factory-installed compressor soft-starter
- Integrated power disconnect
- Refrigerant Detection System (RDS) (mandatory on size 060 and 072, optional for sizes 006-048)
- Communicating DXM2.5 controls for reduced startup, commissioning, and service time
Performance Specifications
Resources
Related Products
Tranquility® 18 (SC) Compact Single-Stage Series
Commercial
Tranquility® 24 (SZ) Versatile Two-Stage Series (R)
Residential
Trilogy® 45 (VE) Variable Capacity Series
Residential
“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.”