The New Standard
For Water Source Heat Pumps
For Water Source Heat Pumps
Apple Vision Pro
What is STØNE?
STØNE cuts heating costs by up to 89% using the existing infrastructure. STØNE replaces radiator and fan coil systems in older buildings with state-of-the-art cooling and heating for each apartment.
Electrify Your Hydronic System
For 2-Pipe Radiator Systems
Replace outdated radiator systems in older buildings with state-of-the-art cooling and heating for each apartment
For 2-Pipe Fan Coil Systems
Replace outdated boiler and chiller-powered fan coil systems with cutting-edge inverter driven cooling and heating terminals
GoodBye
Ugly Window AC & RadiatorHello
Slim, Quiet, and 89% Savings- Goodbye ugly window. AC & radiator
- Hello Slim, Quiet & 89% saving
Eliminate Local Law 97 penalties
STØNE is an innovative high-efficiency heat pump system designed to serve as an alternative to traditional fuel-fired boilers, enabling compliance with local regulations such as Local Law 97.
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What you need to know
- Heat Pumps as a Solution: By replacing fossil fuel systems with efficient electric options, you don’t only avoid future penalties, you also save as much as 89% on your next heating bill.
- Double credits for early adopters: Installing heat pumps before 2027 earns double credits, significantly reducing compliance costs.
- Benefits for now & the future: Building owners can use credits to meet 2024-2027 LL97 limits, such as replacing fuel oil #4 in compliance with LL32. The greatest benefit, however, is for the 65 percent of buildings that need to cut emissions to comply with stricter 2030-2034 targets.
Use existing infrastructure
84% less heat loss in pipes
- Uses existing infrastructure
- 84% less heat loss in pipes
Cut heating cost by up to 89%
STØNE replaces your one-setting-for-all, fuel-fired boiler and radiators while leveraging your existing water-loop infrastructure. With STØNE, you only pay for the heating and cooling used, ensuring efficient energy and cost savings.
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5 ways to save
1. Heat Pumps are 6.9 times more efficient than oil
STØNE experiences less distribution loss, leading to improved efficiency2. The cost per BTU of heat is lower as STØNE uses electricity based on an inverter driven heat pump technology
3. The leakage created by window air conditioners is eliminated.
4. STØNE’s adaptive nature means that only active units requiring heat are utilized, reducing overall energy demand
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Further enhance savings by managing room temperatures individually and employing smart thermostats
Improve the exterior
- Improve the exteriors
- Reduce pollution
- No outdoor units
- Complies with Local Law 97
Increase property resale value
Reclaim window and floor space by replacing ugly window ACs, radiators, and fan coils with a single sleek unit. Re purpose mechanical rooms into building amenity areas.
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Increase Rental Income by 11.6%
In NYC, apartments using window air conditioners are considered less desirable and rent for 11.6% less. Installing STØNE not only improves the quality of life, and saves on operating costs, but also provides an excellent return. When adding in incentives and rebates, the return can be dramatically higher.
The fully installed cost is estimated for a typical apartment of average square footage, but actual costs may vary due to different factors. Larger apartments with higher ceilings will incur additional expenses for equipment and installation. The fully installed price reflects a rebate of $4,000 per apartment plus - whichever is greater and which is guaranteed by Ephoca. On the STØNE system, which may vary based on project size. Additionally, we assume a 3.5% annual rent increase, based on data from Zillow’s research on rental trends. For more information, refer to the link: Zillow Central Air Home Rent Premium Study https://www.zillow.com/research/central-air-home-rent-premium-20436/
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Improve resident comfort
- Improve resident comfort
Take control of your heating and cooling
With STØNE, every resident enjoys complete control over the temperature in each room, as well as the associated costs. Residents can select cooling or heating options at any time of the year, ensuring personalized comfort and energy efficiency.
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STØNE delivers comprehensive control of fan speed, precision temperature, and heating/cooling modes via
. onboard touch controller
. wall-mounted touch controller
. Wi-Fi App
The Wi-Fi app enables scheduling for optimized efficiency and comfort. Additionally, seamless integration with existing smart home setups enhances functionality and connectivity.
Super Quiet
- Super quiet
High Efficiency, Inverter, Heat Pump Technology
STØNE’s BLDC twin rotary, inverter heat pump incorporates cutting-edge technology, providing significant advancements in efficiency and offering highly effective heating and cooling solutions.
Flexible and Modular
- Flexxible and Modular
Save On Maintenance Costs, Fines, and Employee Costs
Traditional buildings with boilers usually necessitate the presence of a full-time certified engineer and frequent breakdowns lead to costly repairs.
With STØNE,
- NO need for on-site engineer as each power module has under 10 tons of heating power.
- NO need for constant maintenance
- NO more total failures. In the event of a module failure, the other modules can increase their output to compensate until the faulty module is repaired.
Peace of mind
Our 10-year limited warranty offers peace of mind, assuring building owners that they are investing in a high-quality system designed to operate trouble-free for many years to come.
FAQ
What is the voltage requirement for STØNE room modules?
STØNE room modules can work in 115v or 220v.
What is the voltage requirement for STØNE outdoor power modules?
7300 watts is required for the STØNE power module.
Does STØNE work with a steam pipe system?
No, STØNE is designed for hydronic (water loop) systems. Buildings with unsalvageable steam pipes may opt to repipe the building to support hydronics.
What is the ratio of indoor room modules to outdoor power modules?
One power module is needed for 8-10 room modules.
How much space does the outdoor power module take up?
A STØNE power module is about 300 pounds and is 56W x 56H x 16D. There are multiple possibilities for placing the units. They can be stacked on a roof, on the ground, hung on the wall, and even recessed into the wall.
Where does the room module go?
The room module will be placed where the radiator once was before removing it, using your existing piping infrastructure.
Do I require a full-time maintenance operator as I do for my chiller or boiler?
No. Due to STØNE's compact modular approach and no hassle maintenance, it does not require an onsite operator. This savings should be factored into the cost analysis of the project.
What considerations are needed to deal with condensate?
STØNE does not drip the condensate on people’s heads. Instead, STØNE injects the condensate into the existing radiator piping system that is now being used to power the STØNE room module. No drain is required.
Does STØNE provide domestic hot water?
Yes. This optional hot water module replaces hot water heaters and provides continuous hot water and can feed a huge hot water storage tank.
Does STØNE qualify for rebates or tax credits?
Yes. NY Clean Heat Program from ConEd, Low Carbon Pathways from NYERDA, and IRS tax credit up to $2,000 are some of many programs available for STØNE.
Will Ephoca help with the planning and getting rebates?
Yes. Ephoca offers a Turnkey program that includes assistance with planning, rebates, permits, financing, deployment, training, and maintenance.
Ephoca is a pioneering force in the heat pump industry, known for its innovative solutions. Established in Italy in 1994, Ephoca’s systems are deployed globally, serving diverse sectors such as luxury hotels, office buildings, residential complexes, and even historic landmarks like the Colosseum in Rome. We are now proud to be part of the Panasonic family.
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