4cacandheating
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281-505-1545

About Us

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Call 281-505-1545
AC Contractor in Katy, TX

About 4C A/C & Heating

Founded in 2012 by Chris and Christina Rannigan, 4C A/C & Heating is more than just an HVAC company; it’s a family business built on trust, dedication, and a commitment to the community. The company’s name reflects the Rannigan family—Chris, Christina, and their daughters Cailyn and Cambrie—making it a true family endeavor. Chris began his career in the HVAC industry in 2000 as an installer and service technician, learning the trade from the ground up. He saw firsthand the importance of homeowners having a reliable, trustworthy technician in their home, which inspired him to start his own business to fill that need.

Since its founding, 4C A/C & Heating has been dedicated to providing honest, top-quality HVAC services to Katy, TX, and the surrounding areas. Christina, with her background in Human Resources and Health & Safety, ensures the business operates smoothly and ethically, with a strong focus on team values and safety. Cailyn helps manage the company’s social media and community events, while Cambrie, when not playing softball, enjoys joining her dad on service calls. Together, the family works to ensure that 4C A/C & Heating not only delivers great service but also represents the values they hold dear. 

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Call: 281-505-1545
Text Only: 832-847-7969

Our Services and Values

4C A/C & Heating proudly offers a wide range of heating, cooling, and indoor air quality services to the residents of Katy, TX, and nearby communities. Our team of licensed and experienced technicians handles everything from routine maintenance and repairs to complete system installations, working with all major makes and models. Whether you need an emergency repair or want to improve your home’s energy efficiency, we provide tailored solutions designed to meet your specific needs.

Customer satisfaction is at the heart of everything we do. We treat every client like family, making sure that every job is completed to the highest standards. Christina plays a crucial role in overseeing day-to-day operations, ensuring that each member of our team embodies the values of integrity and excellence. Our dedication to the community extends beyond just providing HVAC services—we actively participate in local events and initiatives, supporting the very community we serve. At 4C A/C & Heating, your family’s comfort truly is our family business. 

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Call: 281-505-1545
Text Only: 832-847-7969
Air Conditioning Installation and Replacement in Cypress, TX

Core Values

Our core values are the foundation of 4C A/C & Heating, guiding every decision we make and every service we provide. As a family-owned business, we believe in the power of strong relationships, built on trust and mutual respect.

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Integrity

We are committed to providing honest, transparent services that homeowners can depend on. Every job we take on is handled with the utmost professionalism, ensuring that our customers know they are in good hands.

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Family-Focused Care

We treat our customers the way we treat our own family—with care, respect, and dedication to their comfort. Each service is personalized to meet the unique needs of every household, and we strive to make every experience as stress-free as possible.
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Community Involvement

We believe in giving back to the community that supports us. Through local sponsorships, event participation, and hands-on service, we are proud to contribute to the well-being of Katy, TX, and the surrounding areas. Our family’s active involvement in the business ensures that these values are reflected in every aspect of our work.
These core values drive everything we do, ensuring that our customers receive not just excellent HVAC services but also a partner they can rely on for years to come. At 4C A/C & Heating, we’re committed to keeping your home comfortable while upholding the values that make us who we are.
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Call 281-505-1545