ScheduleorCall (720) 605‑7270

Cooper logo
Team photo

Plumbers in Longmont, CO

Trusted Plumbing Solutions in Longmont, Since 1978

For Longmont homeowners in need of reliable plumbing services, Cooper Heating & Cooling has been the trusted name since 1978. Our commitment to fast response times, unparalleled customer protection, and employing the most qualified plumbers in Colorado has earned us over 3,500 5‑star reviews. From emergency repairs to meticulous installations and maintenance of water heaters, pipes, and water treatment systems, we ensure high-quality work that’s done right the first time. We also offer state-of-the-art trenchless sewer line and drain repair services in Colorado, providing a non-invasive solution to mainline sewer or drain issues without the need for disruptive digging, ensuring fast, efficient repairs with minimal impact on your property. Our 24/7 availability means we’re always here when you need us, backed by a 100% satisfaction guarantee and our A+ BBB rating. Choose Cooper for all your plumbing needs and experience the peace of mind that comes with the most trusted plumbing contractor in the state.

100% Satisfaction

Proven by our A+ BBB rating

High-Quality Work

Done right the first time

Emergency Services

From highly-trained plumbers

Water Heater Services in Longmont

Is your water heater making a strange noise? Is it failing to keep up with your hot water demands? Call the Cooper Green Team today, and we’ll arrive promptly to diagnose and resolve your issue. Cooper has some of the fastest response times in the state, so our customers never have to wait long. And because we keep a large supply of parts and equipment in our service vehicles, we’re able to deliver same-day repairs and even replacements.

Considering replacing your old water heater? We install the latest tankless systems as well as the tried-and-true tank varieties, as well. We’ll even help find you a great financing deal to go along with it!

Our water heater services include:

Water Quality & Pipe Services in Longmont

Here in Colorado, hard water is tough on dishes, plumbing fixtures, pipes, and skin. To combat that hard water, the Cooper Green Team helps our customers by installing the latest whole-home water softening systems. In tandem with whole-home water filtration systems, your household will enjoy the purest, softest, water possible!

Water filtration isn’t the only thing the Cooper Green Team specializes in. Pipe leaks and repairs are some of the most common requests we receive. Whether you're dealing with leaks, low water pressure, or outdated pipes that need upgrading, our licensed plumbers have the expertise to diagnose and resolve your piping issues.

Our water quality & pipe services include:

Drain Cleaning & Sewer Services in Longmont

Tired of that clogged drain? Worried about your basement flooding? Call the Cooper Green Team for expert recommendations. We offer the latest drain-busting technology that is guaranteed to eliminate any clog from your drain or sewer line. And we can install the perfect sump pump or backflow prevention device to prevent basement flooding or sewer backups.

Need major sewer line repairs, but don’t want to destroy your yard? Cooper’s plumbers have got you covered with non-invasive video camera inspections and trenchless sewer line repairs. It’s fast, safe, and will even save you some money!

Our drain & sewer services include:

Kitchen & Bath Fixture Services in Longmont

If you have a fixture that’s leaky, loose, or drip-drip-driving you crazy, call the skilled plumbers at the Cooper Green Team. Our licensed pros specialize in repairing and replacing fixtures of all kinds, from faucets and showerheads to toilets, sinks, and garbage disposals.

Considering giving your kitchen or bathroom a makeover? With a focus on quality craftsmanship and customer satisfaction, Cooper is your go-to source for fixture replacements and installations of all kinds, making your home improvement project fast, easy, and stress free.

Our kitchen and bath services include:

  • Kitchen plumbing appliances
  • Bathroom plumbing appliances

Commercial Plumbing Services in Longmont

Cooper Heating & Cooling offers comprehensive commercial plumbing services to businesses throughout Colorado. Our experienced team handles commercial plumbing challenges of all kinds, from routine maintenance and repairs to complex installations and upgrades.

We understand the importance of minimizing downtime and ensuring your operations run smoothly, which is why we’re open 24/7 for your convenience. Whether it's a leaky faucet in a restaurant, a clogged drain in an office building, or the installation of new fixtures in a retail space, the Cooper Green Team delivers professional, high-quality plumbing solutions that do the trick, every time.

Our commercial plumbing services include:

  • Tank & Tankless Water Heaters
  • Water Quality & Pipes
  • Drains & Sewers

Cooper’s Expert Water Heater Solution for Longmont Resident

Problem: Mike needed help with his water heater and was in the market for a new heating system. He wanted a service that was efficient and considerate of his living space, including his pets. He needed to find a team that could provide a seamless experience and answer all his questions comprehensively.

Solution: Cooper Heating & Cooling proved to be the perfect choice, delivering on our every promise. Our team arrived on time, was exceedingly polite, and took extra care to respect Mike's home and pets. What stood out most was William, one of our sales consultants, who went the extra mile by visiting Mike's home to personally resolve the water heater problem, just out of a desire to help. With his new heating system installed, Mike is thoroughly satisfied and feels reassured of his long-term relationship with Cooper Heating & Cooling.

"A fantastic company that delivers on everything they promise."

A fantastic company that delivers on everything they promise. The installers were prompt, curious, and very respectful of our home and pets. All of my questions were answered without fail. Our sales consultant, William, even went above and beyond by making a house call to help us resolve an issue with our water heater just because he wanted to help. We are very happy with our new heating system and look forward to many years of working with these great people.

—Mike | Longmont homeowner

See more outstanding 5‑star reviews on Google

Enjoy The Benefits of the Cooper Green Club

Interested in saving money on home services throughout the year? We've got a maintenance plan that's right up your alley. Thousands of Colorado homeowners are already enjoying savings rewarded through the Cooper Green Club. The only thing that's missing is you!

Enroll in Cooper Green Club and get perks like:


tune-ups per year (heating & cooling)

reduced emergency service fees


discount on heating services/​repairs

Truck with leaves
Team photo

Ready for 5‑Star Plumbing Service in Longmont?

Hours of Operation

The Cooper Green Team is open 24 hours a day, 7 days a week.

See all service area cities