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100 Years of Quality

A. J. Monier & Co., Inc.
has established a reputation over its 100 year history for reliability, quality, and performance through  attention to detail and team work on every project.

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A. J. Monier & Co., Inc. is a full-service licensed and bonded, mechanical contracting company with strong ties to the San Antonio area. In business 100 years, A. J. Monier has complete capabilities in HVAC, Plumbing, Process Piping and more. We have vast experience in both the private and public sectors delivering quality construction projects through both plan & specification and negotiated design/build methods.


A. J. Monier & Co., Inc. enjoys a reputation of providing uncompromising quality and
service before, during and after project completion.


Construction services include Piping, Plumbing, Process Piping, Sheet Metal and more.

24 hour service/ 7 days a week for HVAC, Plumbing, Process Piping and Medical Gas piping.

Our completed projects range from university campuses to manufacturing facilities to medical centers throughout the San Antonio area.
A. J. Monier & Company, Inc. began in San Antonio, TX in 1908. Almost 100 years later it is known for quality and its commitment to safety.
Copyright ⓒ [2007] [A. J. Monier & Company, Inc.]. All rights reserved