MN Service area: New Ulm, St. Peter, Mankato.

GSM Plumbing & Draining Cleaning Solutions for Southern Minnesota

GSM is your first call for plumbing and drain cleaning services in Mankato, New Ulm, St. Peter and surrounding areas!

GSM’s showroom
displays several brands
including Fridgidaire!

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GSM offers 
professional plumbing

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GSM offers
drain cleaning services!

Mankato – New Ulm – Hutchinson

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Bryant Heating & Cooling Systems logo.

GSM is the oldest
Bryant dealer in the state
of Minnesota!

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Get the ultimate
cooking experience
when you buy an Egg

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See what’s cookin’

GSM offers a wide array of products and services to not only southern Minnesota but the rest of the state: Iowa, Wisconsin, North Dakota, and South Dakota.

Gag Sheet Metal, Inc. has been in business for over a century and is southern Minnesota’s oldest roofing and HVAC business. Over GSM’s long history, GSM has continued to expand into new areas of business, including kitchen, laundry, commercial, and outdoor cooking appliances; kitchen and bathroom fixturesplumbing and drain cleaning.

Whatever your needs, GSM’s friendly, knowledgeable staff, installers and service technicians are ready to assist you in Mankato, New Ulm, St. Peter and beyond!

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What Our Customers Say about GSM


My master bath project is complete. Exclusively used GSM plumbers. Lots of pipes to move and got rid of the jet tub and corner shower stall and build new walk-in with linear drain. I’m really happy with the service GSM provided on this project. They had not done a linear drain before but lined up the components perfectly. Also installed a new faucet and toilet.

Brian M

5 star work

Dean warta

We just purchased a new Frigidaire refrigerator from GSM! They installed the new fridge and recycled our old one. The guys were very polite and professional and we love our new fridge! One stop shop! Thank you GSM!

Jeanine B.

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