Geothermal.contractors

CALEMA, LLC, operating as K&M Schillingford & Environmental Loop Service (KMS), is a Tulsa-based geothermal design-build mechanical contractor with one of the longest track records in commercial and residential ground source heat pump work in the region. Listed in the IGSHPA member directory as a dealer/contractor, KMS handles vertical and horizontal loop installation, geothermal system design, radiant floor heating, pool heating, and chilled-water systems for residential and commercial clients. The firm works across geothermal equipment brands as a design-build loop contractor rather than a single-brand dealer. Complementary offerings include solar applications, ductless mini-split systems, and boiler systems. KMS serves the greater Tulsa metropolitan area from its East Virgin Street location. Verified via kms-intl.com/geothermal-systems + IGSHPA member directory (OK bundle audit 2026-06-01)