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Our Team

As a licensed and NATE Certified (North American Technician Excellence) company, SIMS Heating & Air has proudly served Rancho Cucamonga, Upland, and Surrounding Areas for over 40 years!

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(909) 319-2556 | About Us

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Dan Simeroth

Dan Simeroth

Sr Partner - Dan started in the heating and air conditioning industry in 1976 working for his brother’s company installing and servicing systems. Since 1982, Dan and his company has installed thousands of heating and air conditioning systems, mostly high quality Trane Equipment. Dan has received top customer service awards from Trane and Home Depot.

Dan grew up in Fullerton and graduated from Sunny Hills High School and attended Cal State University Fullerton and received a Bachelor’s Degree in Business. Dan is married to Debra and has two children, three step-children, and five grandchildren.

Jon Pattynama

Jon Pattynama

Partner - Jon is Dan’s Stepson and started working for Dan in 2004. Jon is Nate Certified and has received other certificates and awards as a Trane Comfort Specialist. Jon grew up in Lakewood, California and recently purchased his first home here in Rancho Cucamonga where he and his wife, Amaris, and daughter Zalea reside.

As SIMS’ service manager, Jon draws on nearly two decades of industry experience to ensure that all customers, both existing and new can ensure that their home and business comfort systems are in optimal condition, ensuring a long, efficient lifespan.

Bob Wachter

Bob Wachter

Partner - Bob has been working with Dan in the HVAC industry since 1996, installing and servicing systems with high quality standards. He has since been made partner in the business. Bob grew up in the Philadelphia area and moved to California in 1996. He lives in Riverside, California with his wife, Karen and his two daughters, Grace and Lily.

As SIMS’ installation manager, Bob draws on over 25 years of industry experience to make sure that your new home or business comfort system is installed with the highest attention to detail, ensuring the best possible performance for your new system!

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(909) 319-2556
11010 Arrow Route, Ste 105
Rancho Cucamonga, CA 91730
Monday-Friday, 8am-5pm
Saturday, 8am-12pm