What We Do


New Construction




Metal Fabrication


Duct Work


Retrofit Facilities

At Zinsmeyer Air Conditioning & Heating, we focus on getting the job done right for the customer by focusing on high quality installations, professionalism, and customer satisfaction.

Since 1980, owners and builders have selected Zinsmeyer to design, install, and maintain their mechanical systems. We specialize in new construction, renovation, metal fabrication, duct work and retrofit of commercial and industrial facilities. After the install, we provide ongoing service support for the heating and air conditioning systems.

As a specialty contractor, Zinsmeyer utilizes the latest construction technology and our own fabrication capabilities, to provide workflow accountability, comprehensive planning and preparation for the entire process to verify our work and ensure your project is completed the right way and on time. At Zinsmeyer Air Conditioning & Heating, we pride ourselves on construction solutions that reflect our company morals of safety, quality, and productivity.

Get a Quote For Your Project

Metal Fabrication

Our metal fabrication shop has the ability to fabricate custom fittings for a wide variety of products ranging from light commercial to large commercial ventilation systems.


Zinsmeyer Air Conditioning & Heating utilizes a comprehensive plan and preparation for the entire process to verify our work and ensure your project is completed on time. Our experienced estimators begin with planning and designing commercial jobs utilizing take offs and drawings which requires a tremendous amount of knowledge, factors, formulas and materials.

Contact Us Today

for all your comfort HVAC Needs

7 + 15 =

2873 US Hwy 90 East, Castroville, TX 78009




Office Business Hours: Mon - Fri 8:00 a.m. - 5:00 p.m.

On-Site Service available 24/7

Zinsmeyer Air Conditioning & Heating