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STØNE

Air to Water Multi Zone Heat Pumps

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STØNE is a high-efficiency air-to-water multi-zone heat pump system that delivers heating, cooling, and continuous hot water.

STØNE is using water, rather than refrigerant, inside the building for a safer, cleaner, and more environmentally friendly solution. Designed with flexible configurations, it adapts to a wide range of applications from homes to large commercial spaces.

Get to Know STØNE

Great Reasons to Use Water

Performance

Exceptional Efficiency

STØNE delivers heating, cooling, and continuous hot water in one high-efficiency system, using advanced inverter technology and water-based distribution to maximize performance while minimizing energy loss and operating costs.

Performance

Design & Installation

Design & Installation

Smarter Design. Safer, More Flexible Installation

With no refrigerant inside the building, simplified piping, and flexible configurations, STØNE installs faster, operates more safely, and adapts seamlessly from residential spaces to large-scale commercial applications.

Streamlined Installation

Eliminates complex refrigerant piping with simplified water-based distribution, reducing installation time, labor, and overall upfront costs.

Engineered for Long-Term Reliability

Water-based systems reduce wear, eliminate leak risks, and simplify servicing, making maintenance and unit replacement faster and more straightforward.

No Refrigerant Handling

A fully precharged, water-based system eliminates the need for on-site refrigerant handling, simplifying installation, reducing risk, and lowering carbon impact while supporting future regulations.

Total Comfort and Design Freedom

Delivers heating, cooling, and continuous hot water with precise control, while offering flexible indoor and outdoor placement to suit any space or design.

Explore STØNE Systems

Outdoor Unit in a Closet

STØNE Compact

STØNE Compact

A single package system for heating and cooling with no outdoor unit. Ideal for small dwellings up to 2 tons.
STØNE Compact Complete

STØNE Compact Complete

A complete, single package system for heating, cooling and domestic hot water with no outdoor unit. Ideal for small dwellings up to 2 tons.

Architectural

STØNE Architectural

STØNE Architectural

A single package system for heating, cooling with no indoor unit. Ideal for applications from 2 to 50 tons.
STØNE Architectural Split

STØNE Architectural Split

A system for heating and cooling with an outdoor condenser and indoor distribution box. Ideal for applications from 2 to 50 tons.
STØNE Architectural Complete

STØNE Architectural Complete

A complete system with an outdoor condenser and indoor distribution and domestic hot water system for heating, cooling and domestic hot water with. Ideal for applications from 2 to 50 tons.

Pro

STØNE Pro

STØNE Pro

A powerful, high-efficiency, 100 kBtu Water-Source Heat Pump engineered for large-scale commercial, multifamily, and institutional applications.
STØNE Pro Split

STØNE Pro Split

A system for heating and cooling with an outdoor condenser and indoor distribution box.
STØNE Pro Complete

STØNE Pro Complete

A complete system with an outdoor condenser and indoor distribution and domestic hot water system for heating, cooling and domestic hot water with.