4C A/C & Heating

4C A/C & Heating is a family-owned HVAC company founded in 2012 by Chris and Christina Rannigan, serving Katy and nearby areas. The company handles furnace repair, furnace installation and maintenance, plus air conditioning repair, installation and maintenance, heat pumps, ductless mini-splits and thermostats. Furnace repair is a core focus, covering electric and gas units and burners, and the company says it can work on all brands and models.

The company offers same-day or next-day service and says it can handle emergency furnace calls. Maintenance plans and financing are available. Technicians hold licenses from the Texas Department of Licensing and Regulation. The office is at 1812 Avenue D in Katy, and the company also serves Cypress, Fulshear, Richmond, Rosenberg, Sugar Land and other nearby communities.