02/17/2026
You may save a few hundred dollars by using your friend of a friend or your Unlicensed Uncle but you will VOID ALL WARRANTIES!!!
Important: ALL licensed contractors have to perform yearly Continuing Education and perform an annual Federal and Criminal background check.
**Texas Law**
Using an Unlicensed HVAC Contractor WILL Void Your Warranty
It is a little known secret that if you have your HVAC equipment installed or serviced by an unlicensed contractor, the warranty on your equipment will be void. Unfortunately, most consumers, even those who have done thorough research before purchasing an HVAC system, are not aware of this fact because it is rarely disclosed on the internet or by unlicensed contractors. In fact, there is usually no notice about this on the manufacturer’s website, the packaging, or on the equipment itself. As a result, most consumers do not learn of this restriction until they have to make a claim for repairs or until they read the fine print on the warranty, which is usually not provided until the HVAC unit has been purchased and installed.
Although an HVAC contractor may have a business license issued by a city or county, he or she is not necessarily an HVAC state licensed contractor. Under Texas law, a person engaged in and/or advertise HVAC contracting is required to have a valid license from the State of Texas Department of Licensing and Regulations. Every person holding such a license is required to display it in a conspicuous manner in his place of business. In addition, all commercial vehicles used by an HVAC licensee in the daily operation of business are required to prominently display the license number, and all qualified companies are required to prominently display this license number on any advertising found in phonebooks, newspapers, as well as all invoices, proposal forms AND SOCIAL MEDIA..
To verify the validity and current status of a contractor’s license, or to determine if any disciplinary action has been taken against the licensee by the Division, consumers should go to the State of Texas Department of Licensing and Regulations website.
It is natural to want your home repairs done as economically as possible, but given the high cost of repairing today’s sophisticated, computerized HVAC systems, the money saved by hiring an unlicensed contractor can end up costing you more in the long run if your system needs a repair.
DM Mechanical Services LLC Heating and Air Conditioning is a fully licensed and insured HVAC company. License