The Aston is one of the industry's highest efficiency dual capacity units with features that provide exceptional performance and reliability.



28 EER / 4.8 COP

(AHRI 13256-1 GLHP)
Compare this efficiency with
your current system


EnergyStar Rated ARI ETL


GeoStar offers parts and labor warranties ranging from 1 to 10 year.

Register your GeoStar product

The Aston Series is one of the most efficient dual capacity geothermal heat pumps available. All units utilize environmentally safe R-410A refrigerant and include Copeland Scroll™ compressors - the most durable and efficient compressor technology. Dual capacity operation provides the finest in comfort and energy savings. And with the Aurora family of controls, you’ll have two-way communication, energy monitoring,and one of the most sophisticated geothermal heat pumps available.



The Aston can handle heating, cooling, and hot water assist all in one unit—no need for a noisy outdoor air conditioning unit.

All-Aluminum Air Coil

An aluminum air coil is featured in Aston Series units for durability and extended system life.

Blower Motor

A variable-speed ECM blower motor allows the unit to provide even comfort, quiet operation, and amazing energy savings. Variable-speed means the fan can regulate itself to provide the most efficient form of air distribution possible. So instead of bursts of air to allow a normal furnace to "catch up," the Aston is smart enough to keep the temperature and air flow regulated at a steadier quieter rate.


Copeland Scroll compressors are featured in all Aston products for superb efficiency and reliability. Dual capacity units include Scroll UltraTech compressors mounted on double isolation plates for extra-quiet operation. Dual capacity means the compressor can run at two speeds based on the needs of the system—the compressor may run more frequently but it will be running much more efficiently, similar to the difference between highway driving and city driving.

Drain Pan

Electronic overflow protection is included to eliminate the possibility of condensate flooding. The drain pan is corrosion-proof and resists bacterial growth.


All GeoStar units use R-410A—an environmentally friendly, non-ozone-depleting refrigerant that enhances efficiency and savings.


A sophisticated microprocessor sequences components to provide ultimate performance and reliability. These controls communicate with your thermostat to display service messages so you can relax, knowing your system is performing to its highest capability. Aurora provides two-way communication between components, a modular design for future upgrades and easy-to-use diagnostic capabilities. The Aurora expansion board adds true energy monitoring, extended hot water generation control and more.

Hot Water Assist

With an optional hot water assist, the Aston can take water from your hot water heater, preheat it, and redeposit it into your water heater—making it so there is less work for your hot water heater and lower electric bills for your wallet.


Exact specifications are dependant on unit tonnage.

Vertical Cabinet

  • Height34.5" - 62.5"

  • Width22.2" - 25.6"

  • Depth26.5" - 31.6"

  • Weight185 lbs - 488 lbs

Horizontal Cabinet

  • Height17.3" - 21.3"

  • Width22.5" - 25.6"

  • Depth44.0" - 82.0"

  • Weight185 lbs - 500 lbs

Where To Buy

Interested in this product?