Est. 1953. Serving Iowa County and Southwestern Wisconsin

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A Successful busines does not just happen; that respect is earned over time.

For over 50 years, we've worked hard to build this business by developing strong, long-lasting relationships. Whether it's a design build project or a minor repair, Collins & Hying provides skilled and licensed professionals to take care of every job. Our courteous, profesional staff notifies customers when a technician has been dispatched and makes follow-up contacts to ensure they're pleased once the work is done.

David Stone

David Stone

David is president and owner of DS Mechanical LLC, owner and operator of Collins & Hying. David acquired Collins & Hying on February 4th, 2011. He has a degree in Mechanical Engineering, extensive engineering, construction, and business ownership experience.

David has lived Southwest of Madison in Town of Middleton for 22 years with his wife where they raised two sons. David thrives on challenges that include work and spending time outside. Boundless energy coupled with a positive attitude make working with David comfortable and easy.

Tom Benish

Tom Benish

Tom Benish has been a plumber for 41 years. He has been a Master Plumber for 29 years and worked at Collins & Hying for 8 years Tom has been a lifelong resident of Highland - most people in Iowa County know Tom, and know he is an honest and trustworthy person.

Tom has been certified to work with just about all plumbing material available, and is a mechanical wizard extraordinaire. Tom is old school, taking a hard look at a problem and solving it versus replacing parts and hoping the problem goes away. He gains satisfaction from a job well done, his sterling reputation has been earned doing just that.

Rod Ley

Rod Ley

Rod has been with Collins and Hying 12 years. He has lived his entire life in Mineral Point. Rod has been a HVAC technician 21 years and is certified to handle refrigerants. Rod's quiet expertise includes all facets of heating, ventilating and air conditioning including geothermal and hydronic. Very strong mechanical skills allow Rod to troubleshoot difficult problems and propose solutions that resolve underlying issues.

Gerri Thuli

Gerri Thuli

Gerri Thuli Gerry has been with Collins & Hying 34 years. He has lived in Dodgeville area his entire life. Gerry has mechanical aptitude most people can only dream about. He has been a master plumber for 18 years and is a certified pump installer, medical gas installer, cross connection tester, and private waste water site inspector. Gerry's reputation of honesty, integrity, and expertise precede him wherever he works and is reinforced by a job well done backed up by customer satisfaction.

Ruth Espeseth

Ruth Espeseth has been a vital and dedicated employee of Collins & Hying for 32 years. She is a lifelong resident of Dodgeville area. Ruth is trained in accounting, but has become expert at part identifying, part sourcing, and scheduling. Most often, you will be talking with Ruth when you call Collins & Hying, and receiving great service when you do.