About NH3 Plus


Don Penix started NH3 Plus Inc. in 2006 as a family-owned and operated small business with the primary goal of providing customers with the highest level of service possible in the commercial and industrial refrigeration industry.

Since our modest beginnings, NH3 Plus has grown from one employee to seven and we now employ three service technicians and we offer a complete parts department with a robust inventory of anhydrous ammonia refrigeration parts. NH3 Plus now serves the greater central California area and we offer 24-hour customer service, 7 days a week.

Our knowledgeable staff is equipped with decades of experiences and we’re dedicated to serving the industrial refrigeration industry, providing personalized and dependable service to our customers.

If your company is in need of professional refrigeration services, we encourage you to contact us via one of the methods on our NH3Plus.net website, including our completing our Quote Request, email Don Penix directly, contact our Parts department or call us at 877-NH3-PLUS (643-7587).


Our growing customer/client base includes food processing and storage refrigerated facilities including wineries, poultry, beef, fruit and vegetable processing plants, retail and wholesale.


NH3 Plus specializes in anhydrous ammonia refrigeration services. We carry equipment and parts for top refrigeration product lines including Frick, FES/GEA, Mycom, M&M, Vilter, York, Imeco, Evapco, BAC, Cornell, Teikoku, Nikisso and more. Visit our Parts page to view our product line card.


NH3 Plus offers potential, new and current customers a complete portfolio of industrial refrigeration services, including design and engineering, screw compressor rebuild services, a parts department with large inventory, system and compressor safety control testing, ammonia pump rebuild and replacements, ammonia sensor installation and calibration and purity testing and condenser services.

Visit our Services page for more information.