License #307037

Call us at (510) 521-3000

Golden Gate Sheet Metal Works

Unparalleled Service in Heating and Air, Fabrication, Installation
and Repair in the East Bay.

get a free estimate

we focus on you!

We stand strong on customer service and we take pride in producing quality workmanship
that we stand by.

We specialize in residential and light commercial HVAC systems, both old and new. But what makes us industry leaders is our customer service. We provide a personal customer experience from beginning to end.

Heating & Air Conditioning

Golden Gate takes pride in our custom furnace installations. Each job is unique because we customize the heating system to fit your space. We fabricate all our own plenum and rigid pipe if the space requires it. We meet with you one-on-one to see what we can do to make your system suit your needs.

We install only the best brands in the industry and back them with manufacturers warranties, as well as our limited labor warranties.

We are dedicated to each and every one of our customers. Once you have a system installed by us, you can count on us to service it for years to come.

Custom Fabrication

We have a complete fabrication shop on site and specialize in custom fabrication for both new and old furnace and air conditioning systems. We have an on-site fabrication shop for general and custom sheet metal; working with 26 gauge to 16 gauge galvanized sheet metal and also light gauges of stainless steel and copper. We fabricate everything from:

  • Custom Gutters
  • Downspouts
  • Plenums
  • Roof flashings
  • Back splashes
  • Duct fabrication

Service Areas

Alameda, Oakland, Piedmont, Berkeley, El Cerrito, Montclair, San Lorenzo, Hayward, and Castro Valley

We’re a small company with the ability to provide personal one on one service to our customers — we treat you like family.

90 Years of Experience

Golden Gate Sheet Metal Works has been serving the East Bay Area since 1925, beginning as a furnace manufacturer, installer and custom fabrication shop until the mid 1940’s. After World War II, Golden Gate stopped manufacturing the Golden Gate furnace due to cost and competition of mass produced furnaces. With their solid reputation intact, they began installing furnaces built by other manufactures and continued with custom fabrication service. Nearly 90 years later, Golden Gate is still providing high-quality service and products, and occasionally runs into one of their original Golden Gate furnaces.

We Take Pride in What We Do

Our service department is well known for maintaining and repairing many types of heating and cooling systems, old and new alike. We also have an on-site fabrication shop where we can fabricate everything from custom gutters, downspouts, plenums, roof flashings to custom copper and stainless back splashes and duct fabrication.

  • Team Member

    Rudy Koopen Owner & President

    Rudy was hired by Golden Gate Sheet Metal the summer of his senior year in high school. He joined the Sheet Metal Workers Union, Local 104 as an apprentice in 1985 and completed the program in 3 1/2 years. He came to work every day and learned all he could about the business and the HVAC trade. After 14 years of working for the company he got the opportunity to become an owner and has never looked back. Rudy's expertise and craftsmanship are unparalleled in the industry.

  • Team Member

    Ernie Kipfer Owner & Vice-President

    Ernie started with Golden Gate Sheet Metal when he was just 18. He joined his father who worked for the company, and they were able to work together for many years. Ernie became a member of the Sheet Metal Workers Union, Local 104 in 1976 and learned the skills he needed to continue a career with the company. Ernie also became an owner with Rudy in 1998. His specialty is fabrication where he is a master in custom creations for all areas of sheet metal work.

  • Team Member

    Bridget Koopen Executive Secretary/Treasurer

    Bridget had the opportunity to join Golden Gate Sheet Metal in 2003 when Rudy & Ernie's partner Judy Harris retired after 32 years. She has been instrumental in running the daily operations of the company, as well as making sure Golden Gate continues as a leader in the residential HVAC industry.

  • Team Member

    Heather Bogue Office Manager

    Heather joined Golden Gate Sheet Metal in 2014. She has a background in customer service and we knew she would be a perfect fit. Heather is our first line of communication with our clients. Her upbeat personality and attention to detail are just a few of her great qualities. She takes excellent care of our customers - just like her family.

“Rudy! Thank you sooo much for fixing my heater and installing that fabulous touch screen. Now my house is nice and warm, just in time for my mom coming to visit. As you know, she thought that my broken heater story was a farce and I was cheaping out by not providing heat when she was visiting..... Now I can prove her wrong! Happy holidays!”

“The company was a pleasure to do business with, and their technician Ernie was an equally wonderful representative of the company. Bridget in the office was so ON THE SPOT with paperwork, that she had copies of all our work, and the rebate forms put together with notes giving me instructions on how to fill out and send in the refunds and rebates.  She made it so simple, I was surprised!  If you want to hire a contractor with confidence, I guarantee that you will NOT regret your decision to hire Golden Gate!”

“I wholeheartedly recommend GGSMW for any heater repairs.  I had unexpected water heater, floor heater and ducting repairs, and Rudy gave me an excellent quote, and followed it up with an outstanding installation.  He brought my system up to code and also took care of all the permitting and City inspection.  My water heater and heater are working much better than before, and the new internal and external ducting looks great!”

“Great local business - turn to them first!”

“Rudy is an awesome technician.  He's very professional, very thorough, very fast, and very personable.  Of all the service technicians I've come across, the people at this shop have been so helpful.”

“Bridget is very helpful in communicating, setting up appointments, and getting transactions done.  I'd highly recommend Golden Gate Sheet Metal to anyone looking to get some HVAC work done.”


Golden Gate Sheet Metal Works, Inc.
2006 Clement Avenue
Alameda, CA 94501
(510) 521-3000
(510) 521-3717 fax

Email Us


Sheet Metal Workers image Bay Area Chapter image

Follow Us