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ClearStak, LLC is a privately held environmental testing lab located in Putnam, Connecticut. ClearStak received EPA Accreditation of the lab in Fall of 2016. The lab is focused on partial thermal storage testing for hydronic heaters using biomass products for fuel. Combining both dilution tunnel testing and hand held particulate testing equipment, ClearStak provides a full picture of emissions for biomass appliance manufacturers. ClearStak aims to be the leading testing facility in the biomass industry by not only offering quality results, but also transparent testing services through the use of several customer-friendly features.

ClearStak, LLC Questions

The ClearStak, LLC annual revenue was $600000 in 2026.

2 people are employed at ClearStak, LLC.

ClearStak, LLC is based in Willington, Connecticut.

The NAICS codes for ClearStak, LLC are [541, 54, 5413, 54138].

The SIC codes for ClearStak, LLC are [87, 873].

Top ClearStak, LLC Employees

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