Quality & Efficiency

Retrofit Technology Inc. specializes in chiller water systems and upgrades to existing buildings. Our professional certified staff guarantees quality & efficiency with every job both small and large to ensure you save money & keep your cool.

Who We Are

Our Company history

Retrofit Technology, Inc., was started in 1989 by Tony Grano. Tony graduated Cal State University San Bernardino in 1983 and went to work for his father, Chuck Grano at Grano Welding Service. Tony is creative and innovative. He is a certified welder and has a true passion for completing difficult chilled water retrofit projects. In 1989 Tony founded Retrofit Technology, Inc., specializing in chilled water replacements.

When Chuck was ready to retire, Tony bought Grano Welding and incorporated the company with Retrofit Technology. With the backing and knowledge of the welding industry and the belief that there was a market for “retrofitting” older buildings with new technology in the HVAC industry, Retrofit Technology, Inc., began to grow.

With our mechanical, electrical, fabrication, demolition/rigging and service divisions partnered with our administrative team, Retrofit Technology Inc. plans a bright future of growth and development. To date, Retrofit Technology, Inc. has approximately 40 employees and additional seasonal help.

With welding, demolition, installation, service & maintenance, rigging, shop fabrication, electrical and many other services to offer, Retrofit Technology, Inc., is the company to handle all your needs when it comes to HVAC.

What We Do

Experience counts

At Retrofit Technology Inc, our company history has built a team with diverse expertise in various fields. This unique dynamic allows gives us the ability to offer custom solutions to any situation. We pride ourselves in our project flexibility; there is no job to big, no building to old, and no task to complex.


Quality you can count on

Retrofit Technology Inc. provides our clients superior quality in every aspect of our business. Our sales team promises to analyze every aspect of your situation in order to provide the best solution for your unique needs. Our professional staff promises to provide the finest quality craftsmanship while being unobtrusive to your business. And our service team provides unparalleled service to make sure you are satisfied throughout the life of your product. At Retrofit Technology Inc. we pride ourselves in offering the capabilities and workmanship of a large corporation, with the personal touch and communication of a small business.



Our Capabilities

  • Chillers
  • Cooling Towers
  • Condensers
  • Centrifugal Units
  • Boilers
  • Metal Fabrication
  • Pipe Fitting
  • Control Systems
  • Variable Speed Drives
  • Pumps Startups
  • Filters/Sand Filters
  • Valves/Flanges
  • HVAC Electrical
  • Welding, custom or simple
  • Demo/Rigging
  • Electrical
  • Testimonials

    What people are saying about us

    In my working experience, there have been few projects of this size and complexity that came through with so very few change orders and was both on time and on budget.

    Matthew Sullivan
    WestEd
    Director, Property and Facility Management




    I was completely impressed with Retrofit Technology Inc., from top to bottom, I have never worked with a better contractor.

    Bill Zengler
    WestEd
    Director, Property and Facility Management




    Over the past fifteen years I’ve worn the hat of regional engineer or chief engineer for four different engineering firms. I’ve been responsible for the mechanical operations of over one hundred office and industrial buildings. Without a doubt, Retrofit Technologies has surpassed all expectations and surpasses and outperforms its’ competition. Every job is thoroughly laid out and planned, so there has never been a surprise. No job has ever come in late. Every scheduled start up has been met. The crews are courteous, respectful and knowledgeable. There has never been an extra for “unforeseen” conditions. Simply put, they are well above the competition. Integrity at it’s best.

    Tony Yeseta
    M & Y Property Management
    Chief Engineer.




    As the Chief Building Operating Engineer for the Los Angeles Convention Center, which is now a LEED-EB O&M Gold Certified commercial building, I may not have the time to micro manage contractors on a daily basis. It is for this very reason; I always prefer to go with Retrofit Technology. I know if I have Tony and his crew on the job, no mistakes will be made and the job will be completed on time. One of the best attributes when working with Retrofit Technology, is the fact that Retrofit will always take ownership and if something goes wrong after the fact. They will come out and fix whatever problem you maybe having with no additional charges or change orders. As a manager and steward of City funds, this to me is the icing on the cake and commendable.

    Rey Castro
    Los Angeles Convention Center
    Chief Building Engineer


    Click Here to read the article about us in American Builders Quarterly.