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McWilliams Heating, Cooling and Plumbing has been proudly serving Texas since 1974!

We are the Heating, Air Conditioning, and Plumbing Experts with physical locations in Huntsville, Houston, Livingston, Longview, Lufkin, & Nacogdoches, TX. Our team looks forward to helping you with your Plumbing, Heating, air conditioning repair and replacement needs. We’re pleased to serve both residential and commercial customers; our team is prepared to help you with the sales, service, and installation of the comfort system that is ideal for your home or business. Whether it’s a new installation or routine service, our factory-trained technicians provide the expertise your comfort depends on.

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Angelina, Nacogdoches, Polk, Liberty, San Jacinto, Walker, Fort Bend, and other Surrounding Counties


Why Choose McWilliams Heating, Cooling and Plumbing?

At McWilliams Heating, Cooling and Plumbing, we repair all makes and models, and we offer financing on HVAC repairs. When it comes to your family you want dependable air conditioning and heating systems that provide you with value as well as comfort. We pride ourselves being a top heating, ac and plumbing company in TX.

  • Residential & Commercial
  • Locally Owned & Operated
  • FREE In-Home Estimates
  • Air Conditioning Service



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Heating & A/C Installation

Purchasing a new air conditioner or heating systems is one of the best investments a homeowner can make, and our installation technicians do everything possible to safeguard that investment. Every installation visit begins with a full load calculation to determine the exact capacity needed to keep the whole home cool, and we recommend a system calibrated to meet that need. Our factory-trained technicians work diligently to install every system up to the manufacturers standards and take care to thoroughly test the machines before leaving the home.

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Dehumidifiers In Cypress, TX, And The Surrounding Areas | ! McWilliams Heating, Cooling, and Plumbing

A/C & Heating Repair

When equipment does fail, our A/C & heating repair team is ready to step in and fix all makes and models. We send our teams out stocked with all of the equipment they need, and we have access to even more through the Carrier network. In addition, we offer 7-7-7 services to keep our friends and neighbors comfortable in any season. Whether you need a new system, routine maintenance or an urgent repair, contact McWilliams Heating, Cooling and Plumbing to schedule an A/C or heating service visit today.

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Plumbing Services

Our team of licensed plumbing specialists are well-equipped and always available. When you trust us with your plumbing, you can rest assured that you’re receiving top-notch service from a qualified, professional team.
Whether you need residential or commercial plumbing services, at McWilliams Heating, Cooling and Plumbing, we offer a full range of services.


We are a Heating, Cooling and Plumbing company Proudly Servicing Angelina, Nacogdoches, Polk, Liberty, San Jacinto, Walker and Surrounding Counties

  • Alto, TX
  • Apple Springs, TX
  • Broaddus, TX
  • Bronson, TX
  • Brookeland, TX
  • Camden, TX
  • Center, TX
  • Centralia, TX
  • Chireno, TX
  • Cleveland, TX
  • Colmesneil, TX
  • Corrigan, TX
  • Cinco Ranch, TX
  • Cushing, TX
  • Dallardsville, TX
  • Diboll, TX
  • Douglass, TX
  • Etoile, TX
  • Garrison, TX
  • Geneva, TX
  • Goodrich, TX
  • Groveton, TX
  • Hemphill, TX
  • Houston, TX
  • Huntington, TX
  • Huntsville, TX
  • Jasper, TX
  • Livingston, TX
  • Long Branch, TX
  • Lovelady, TX
  • Lufkin, TX
  • Martinsville, TX
  • Maydelle, TX
  • Katy, TX
  • Kennard, TX
  • Minden, TX
  • Mount Enterprise, TX
  • Nacogdoches, TX
  • Onalaska, TX
  • Pecan Grove, TX
  • Pennington, TX
  • Pineland, TX
  • Pointblank, TX
  • Pollok, TX
  • Reklaw, TX
  • Richmond, TX
  • Rosenberg, TX
  • Rusk, TX
  • Sacul, TX
  • San Augustine, TX
  • Spring, TX
  • Sugar Land, TX
  • Shepherd, TX
  • Timpson, TX
  • Trinity, TX
  • Tenaha, TX
  • Wells, TX
  • Woodville, TX
  • Zavalla, TX