Keystone Property Service, LLC

Keystone Property Service LLC operates as an owner-managed HVAC contractor serving Hummelstown and the surrounding Pennsylvania communities of Hershey, Middletown, Palmyra, Harrisburg, and Elizabethtown. The business holds a perfect 5-star rating derived from a single client review, reflecting its focused approach to residential heating and cooling systems. Josh Demko runs the operation as owner and lead technician, maintaining full insurance coverage while handling service calls personally rather than dispatching a rotating crew.

This contractor distinguishes itself through a repair-first philosophy that prioritizes fixing existing equipment before recommending replacement, avoiding unnecessary upselling. Diagnostic service calls are priced at a flat $120 with complete transparency on costs before any work begins. The business installs Mitsubishi Electric ductless mini-split systems for homeowners seeking efficient heat pump solutions. Notably, standard rates apply to evening and weekend appointments with no after-hours premium charges, providing genuine scheduling flexibility for working homeowners.

Keystone Property Service emphasizes direct homeowner access to the technician, eliminating the friction of call-center interactions when scheduling service. The company provides free replacement estimates without requiring immediate commitment, allowing homeowners time to evaluate options.