Our team is founded on core beliefs and principles that help us build strong relationships and viable progress in the industries we perform in.

Robert Madden Industries has brought together two leading manufacturing representative firms Tech Sales and Paschal-Harper. The combining of both companies will make a high-quality Rep firm to provide outstanding support and full commitment for the HVAC business.

Paschal-Harper began its professional practice in 1964 and TECH SALES, LTD. started in 1996. Both companies growth over that time has been supporting the HVAC mechanical construction markets. Both company’s growth and development of our professional staff has evolved in a similar manners but with differences in the HVAC industries. Paschal-Harper strengths are in Air Distribution, Ventilation Equipment and niche products: whereas, TECH SALES has outstanding strengths in the large HVAC air handlers, boilers, hydronic specialties and critical environment controls.

We expect tremendous growth with the combination of manufacturers and backing by the financial support from Robert Madden Industries. The merging of the two companies will give us the fortitude to increase the quality and stability for a Manufacturers Rep firm. We decided to grow our representative business through a merger because we believe that a larger organization will allow us to provide a wider array of services and more depth. As you know, in our area of the country finding and retaining excellent people is a constant challenge. A larger organization will also mean our associates will benefit even more and stronger career opportunities ultimately providing an excellent partnership with our manufactures.

We are grateful to our manufactures for giving us the opportunity to represent their products as well as loyalty and friendship, which have enriched our relationships over the years. We are confident that our new affiliation will serve us all well.


If you’re interested in partnering with Tech Sales, please let us know below. Reach out any time and we’ll get back with you as soon as possible.


5744 40th St

Lubbock, TX79407
(806) 785-2231


801 South Hayden St.

Amarillo, TX 79101
(806) 220-2330