Your Family's Comfort is our Family Business!

Your Trusted HVAC Service Provider in Katy, TX, and the surrounding area!

Our Services

Cooling - 4C A/C & Heating


At 4C A/C & Heating, we make your comfort our top priority. Don’t leave AC repair to a contractor with subpar reviews…

Heating - 4C A/C & Heating


At 4C A/C & Heating LLC, we’re Katy’s furnace experts: We offer repair, servicing, and replacement. Our team can repair all…

Indoor Air Quality - 4C A/C & Heating

Indoor Air Quality

The best air duct cleaning service is possible by working with our 4C A/C & Heating crew. We provide unparalleled services…

4C A/C & Heating, LLC

About 4C A/C & Heating, LLC

Chris and Christina Rannigan founded 4C A/C & Heating in July 2012. 4C A/C & Heating was named after the Rannigan family, Chris, Christina, Cailyn, and Cambrie. Chris has been in the industry since 2000 starting out his career as an installer and then a service technician before starting the company in 2012. He realized how important it is for homeowners to find an honest and trustworthy technician in their home and wanted to create a company where we would be trusted and represent the values we believe in. 

We take pride in serving our community and our name/brand means alot to us. Christina’s background is in Human Resources and Health & Safety. She makes sure the day to day operations are running legally and safely. 🙂 She takes a lot of pride in every single person hired on the team and ensures every individual’s values align with the companys. Cailyn works for 4C managing our social media pages and planning community events. If Cambrie is not on the softball field, she enjoys running service calls with Chris and climbing in attics.

Professional HVAC Service Provider in Katy, TX

4C A/C & Heating provides licensed heating and cooling services here in Katy, TX, and the surrounding areas. With years of experience, our professional technicians ensure that you get the essential heating, indoor air quality, and air conditioning in Katy, TX, that you need.

No matter what your individual needs are, we can find a solution that works for you. Our team has carried out installations, repairs, and maintenance for all makes and models of HVAC systems, so we can handle anything when it comes to HVAC.

Contact Form

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Our Service Areas

We’re proud to be a family-owned and operated business here in Katy, TX, serving surrounding areas including:

Just give us a call today to see what we can do for you!

What Your Neighbors Say About Us

Making HVAC Easy for You

We want to make our services as accessible as possible for our valued customers. Our maintenance plans make keeping track of HVAC maintenance easy and let you save on tune-ups. 

We also provide financing opportunities to help you invest in your home’s HVAC systems without breaking the bank.

HVAC Service - 4C A/C & Heating