Keystone Htg & AC Co, Inc

Keystone Heating & AC has maintained a strong presence in Racine and Kenosha since 1918, earning a 4.9-star rating across 204 reviews. The company operates around the clock every day of the week, ensuring residents of both communities have access to heating and cooling support whenever weather demands it. This near-century of continuous operation reflects consistent service delivery that local homeowners have come to rely on through multiple generations.

What distinguishes Keystone Heating & AC is their commitment to transparent diagnostics and flexible financial arrangements. The company offers maintenance agreements that allow homeowners to schedule preventive service rather than waiting for emergency breakdowns. Their financing program enables customers to invest in energy-efficient systems without upfront lump-sum payments, making upgrades more accessible. The team handles both residential and light commercial projects, covering furnaces, air conditioners, boilers, mini-split systems, and heat pumps.

Customer reviews highlight the technical expertise that keeps this company recommendation-worthy. One reviewer in Waterford described how technician Andrew traced a furnace problem to a bad connection in the main wiring harness, solving an issue that another contractor had misdiagnosed as a faulty limit switch after a $100 diagnostic fee. Another reviewer praised technician Adam for immediately identifying a venting expansion issue that had caused persistent nighttime banging sounds, a problem the customer's previous HVAC company failed to address despite receiving a sound video and waiting a week for follow-up.