The Residential Tranquility 27 twin-stage packaged series uses the ground’s steady temperature — about 55 degrees — instead of fighting outdoor air. Heating, cooling, and water heating can be half of a utility bill, so that difference shows up every month.
Scroll compressors and microprocessor controls raise that ground temperature to the setting you choose, up to 100 degrees, and run at an efficient indoor level in any weather.
What owners notice
- One compact unit for heat, air conditioning, and domestic hot water.
- No flame, flue, odor, or fumes around family and pets.
- Quiet operation. There is no outdoor fan to disturb the yard.
- Comfort controls with optional dehumidification and both manual and automatic temperature balance.
- A performance monitor that alerts you when the system is off its peak.
- Treated air coils and a durable design aimed at long life and low maintenance.
- MERV 11 filtration that captures far more dust, pollen, and spores than a standard fiberglass filter.
- EarthPure ozone-safe refrigerant.
Efficiency
Energy Star geothermal heat pumps need an EER of 14.1 on closed-loop systems or 16.2 on open-loop systems. The Tranquility 27 is rated at an EER of 20, among the highest twin-stage ratings in the industry. A 10-year limited manufacturer warranty is standard. Installation can use a modest ground loop so the yard stays intact.
Independent consumer surveys have rated geothermal among the highest-satisfaction ways to heat and cool a home.