SMTI’s very first 80,000 Btu/hr GAHP prototype (Alpha 1) was installed as a field test unit, in a warehouse heating application. The original proof-of-concept prototype, developed under a DOE grant, is hydronically connected to two ceiling-mounted fan-coils. Each fan-coil is controlled with its own programmable thermostat, creating two distinct heating zones. The 4:1 modulating GAHP […]
In a competition with 30 other new ventures presenting at National Renewable Energy Laboratory’s 28th annual clean technologies investor event, Stone Mountain walked away with an Outstanding Venture Award. A panel of judges from amongst the financial community / investor attendees rated each presentation across four criteria. SMTI was one of three winners out of […]
SMTI commissioned four 3rd generation gas heat pump water heater prototypes in the Pacific Northwest, the first major field test of this exciting new water heating technology. In partnership with the Gas Technology Institute (GTI), who is providing overall project management and M&V, and the Northwest Energy Efficiency Association (NEEA), these ultra-high efficiency units replaced […]
SMTI is excited to announce we have moved our engineering and test laboratory to an 11,000 sqft facility in Johnson City, TN.“Our early development work on thermally-driven absorption heat pumps has generated a lot of excitement. We were literally busting out of our old facility and this move allows us to accelerate our development.”
SMTI commissioned a 2nd generation gas heat pump water heater prototype in northeast Tennessee home. This test builds upon lessons-learned during a 1st generation test installed in 2013.
SMTI installed a 1st generation gas heat pump water heater prototype in northeast Tennessee home. This “Alpha” prototype, which was initially developed and tested under a DOE grant, will provide valuable feedback regarding performance in a real-world environment. To our knowledge, this is the worlds’ first residential water heater-sized GAHP ever demonstrated.
SMTI is excited to announce we have been awarded a grant by the U.S. Department of Energy to develop a gas-fired absorption heat pump for residential heating applications. With this grant, SMTI will scale up our GAHP design from 10,000 Btu/hr (residential water heater) to 80,000 Btu/hr.