Tankless Water Heater
Experts

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Tankless Hot Water
Heater Experts

 LEARN MORE

Tankless Water Heater
Experts

‭(720) 375-1022‬

grandbisoncontracting
@gmail.com

Service & Maintenance

Leaks are more than an annoyance – they can wreak havoc on your home. We repair and replace everything from fixtures to pipes and valves. Nobody likes a cold shower, if your water heater isn't functioning properly we have the know how to fix or replace it, too.

Remodels & Additions

Remodeling a bathroom as part of a renovation project adds functionality and value to your home. New shower and tub systems are more than a place to get clean, they are a place to spend time and relax. Want to add an extra kitchen/bath for an Airbnb or mother in law suite? We are the experts.

System Upgrades

Do you have rust in your water? Is your system at the end of its life? Replace aged galvanized pipes and old drains with a new system designed to last the life of your home.

New Construction

From a small cabin to a high-end custom home, Grand Bison is a full service plumbing contractor. We have experience plumbing new homes and businesses all across the state of Colorado.

Our Master Plumber

Robert Malunat Master Plumber Profile 2

Robert Malunat

 

Robert Malunat is a licensed Colorado Master Plumber and owner of Grand Bison. After years of employment with a large plumbing/mechanical contractor he decided to start Grand Bison with the same dedication to quality work and attention to detail he had been applying throughout his career.


When not working, Robert enjoys snowboarding, hiking and international travel. As a Denver Metro native he believes that continuing growth responsibly is paramount to the prosperity of our rocky mountain community and environment

100+

Water Heaters Installed

990

Hours of Education

10000

Hours of Plumbing Experience

100's

Satisfied Customers

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  • Robert from Grand Bison has helped us with new fixtures in both our kitchen and bathroom. He's installed a hot water heater in our home and done some life saving work in a rental property we manage. His pricing is fair and he's incredibly knowledgable. We wont ever use another plumber!

    Ches A. – Baker

  • Call Robert Malunat. He's super-responsive. He did a great job on a toilet repair for me. He's awesome and lives in the Denver area.

    Mike H. – Barnum

  • I can’t recommend Robert Malunat and his business Grand Bison enough. He helped me with some much needed plumbIng repairs. Very accommodating on scheduling and pricing. He goes the extra mile.

    Alisa H. – Cory-Merrill

  • Robert with Grand Bison helped us with an extremely difficult drain line. We got another contractor to come out and look at it and they wouldn't touch it because of the tight space. Then we contacted Robert and he took care of it all in one day! Very nice and knowledgeable guy, and very reasonable rates for his services. If I ever run into another plumbing issue I’ll be contacting him again! Thanks!

    Jess W. – Valverde

  • Just had a great experience with Robert Malunat at Grand Bison for a leak under my kitchen sink. He responded right away, came over that evening to assess the issue, and had everything wrapped up the next afternoon. Definitely recommend!

    Andrew W. – Baker