Ask us to qualify for a

¡Afinación sin costo de Oncor!

Valued at up to $200, free for you with the Mondragon Mechanical team!

Summertime is arriving! Contact us NOW to qualify at
972-214-7002 or filling out the form. We work in ALL Dallas, Metroplex!


Free AC tune-up from Oncor and Mondragon Mechanical

Ready to stop losing energy and start maximizing your comfort?


Greater efficiency and
lower cooling costs


Reduced maintenance costs and a longer-lasting equipment

Air quality

Improve your indoor air quality, comfort and humidity control


A no-cost CoolSaver A/C Tune-up from Oncor can help you get there when the summer weather is coming and temperatures are rising.

During your A/C tune-up, a Mondragon Mechanical technician will inspect your equipment, measure airflow and refrigerant, and clean filters, coils, and blowers as necessary. With this, your air conditioning will be ready for the hottest days.

The best? You don’t need to pay for it. 

Oncor provides this service to our Dallas, Metroplex community so that residents can improve home comfort and save on energy costs. Check with us to qualify* today to start to save money and improve your cooling system.

*Conditions apply. For more information check our FAQ.

Free tune-up flyer from Oncor describing the program


An HVAC tune-up is a regular maintenance service performed on a heating, ventilation, and air conditioning (HVAC) system to ensure it is running efficiently and effectively. It involves a thorough inspection of the system’s components, cleaning or replacing of filters, and adjustment of settings to ensure optimal performance. 

Performing a tune-up can help your HVAC system work better, specially in summertime. This will help you to save money. Also, can help identify potential issues before they become major problems, improve energy efficiency, and extend the life of your HVAC system. It’s recommended that homeowners schedule a tune-up at least once a year, typically before the start of the heating or cooling season.

To qualify, your central A/C or heat pump must be a working unit that is under five tons, at least 1 year old and has not received a CoolSaver tune-up within the last five years. The cooling unit must service an income eligible Oncor property. Outdoor temperature must be 70º F or higher to perform the tune-up.

To schedule your tune up, please fill out the form on this page or call us at 972-214-7002 to schedule a visit with our experts at the time of your preferences. 

Check our previous Tune Ups for our customers: Before/After


Fill the form bellow to get in touch with our sales representative, or all now calling us: (972) 214-7002

Puedes contar con nosotros

Para una instalación HVAC confiable, profesional y garantizada.

Trabajamos con

Calidad | Conocimiento | Honestidad

Especialista en viviendas personalizadas residenciales y comerciales en Dallas, TX

Somos una empresa comercial y residencial de reparación de aire acondicionado y calefacción en Dallas, TX y ciudades aledañas.
Juan Tapia
Juan Tapia
Hace 7 meses
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Mondragon Mechanical, es una empresa seria , responsable y siempre tiene una actitud de servicio inmejorable!! Se las recomiendo ampliamente , en mi casa solo confiamos en su servicio para el Aire Acondicionado y Calefacción!! Mondragon The Best!!!
Jesus Cortes
Jesus Cortes
Hace 2 meses
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Muy intalaron todo el equipo hace 11 meses. Y por pequeños detalles les llame y me solucionaron rapido el problema. Personal de oficina y técnicos muy amables.
Alejandra Franco “Franco's Body Shop”
Hace 7 meses
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Yo se los recomiendo usar la compañía de Mondragon’s Mechanical. Desde el momento que los contactamos siempre muy profesional. Sus técnicos muy cuidadosos y limpios para trabajar. Cumplieron con mis expectativas.
Maria Mercado
Hace 3 meses
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La verdad recomiendo al 1000% una compañía súper responsable que a pesar de lluvias tormentas no pararon de hace su trabajo la verdad es confiable su trabajo e impecable Gracias Mondragon company por su súper servicio


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