
Backflow Prevention Services in Denver, CO
A Trusted Name In Backflow Prevention Replacements and Testing Since 1978
When water flows down your drains, it’s easy to forget that it relies on a critical balance of pressure to keep it flowing smoothly. If there’s back pressure or siphonage, wastewater can suddenly flow in the opposite direction– causing a host of unwanted problems! To prevent this from happening in your home or business, contact the professionals at Cooper Heating and Cooling. We offer comprehensive backflow prevention services throughout the Denver metro area, all backed by the 5‑star reputation we’re known around town for. So, for fast scheduling, honest prices, and trusted workmanship, call us today!
Emergency Services
From highly-trained plumbers
High-Quality Work
Done right the first time
100% Satisfaction
Proven by our A+ BBB rating

How much does backflow prevention cost in Denver?
Low price:$234
Our avg price:$1,200
High price:$5,000
Why are our prices slightly higher?
As one of Denver's highest-rated plumbing contractors, we go above and beyond to deliver world-class service. This means you can count on a job done right (the first time!) and from highly-trained technicians who aren't happy until you're happy. Simply put: we offer the best value that money can buy.
Backflow prevention cost factors:
Diagnostic fee
If you smell sulfur-like odors, notice discolored water, or your drains seem to take longer to clear, you may have a backflow issue that needs attention. Contact the Cooper Green Team today, and we'll get to the bottom of it. For our time and labor, we charge a $119 diagnostic fee. If you need help after 4 PM on weekdays, this fee is $219; on holidays, it's $328.
New installation
If you don't have any backflow prevention in place, we'll need to install a backflow preventer device that stops potentially hazardous wastewater from contaminating your home. We can also install check valves that detect sudden changes in pressure, so you're alerted to problems as soon as possible.
Repairs and maintenance
Backflow preventers must be repaired and maintained periodically like the rest of your home's appliances and systems. Depending on the problem at hand, your costs will vary. However, you can always count on us for honest pricing and advice that serves your best interest only.
Need emergency backflow support?


Our backflow prevention service process
Schedule a diagnostic
Contact with wastewater can threaten your household's health. If you suspect a backflow issue, Cooper is a great name to remember. We're open 24/7, after all! Call Cooper's professional plumbers at (720) 605-7270 to schedule a diagnostic. You can also book online, and we'll reach out to secure a convenient appointment for you.
We provide upfront pricing
Once we've had a chance to inspect your plumbing system thoroughly, we'll provide your most cost-effective solution. That solution may be a repair to your existing backflow device, a replacement, or even a fresh installation. If you're simply looking to be prepared, we test backflow devices, too!
We perform expert workmanship
Once you've signed off on your quote, we'll get straight to work on your backflow repair, installation, or maintenance service. We work fast and efficiently, so the odds are in your favor that we'll have the job done in just one visit to your home (usually about an hour or two).
Share your feedback
We take the experiences and opinions of our customers seriously. Following your backflow prevention service, we want to hear from you. If anything could be improved, don't hesitate to tell us about it. We're dedicated to 100% satisfaction–no exceptions!
Why Choose Us
For over four decades, Cooper Heating and Cooling has served Colorado homeowners and businesses with exceptional quality HVAC, plumbing, and electrical service. Whether you need repairs, a replacement, or annual maintenance, trust our team of qualified pros to delight you with money-saving advice and accurate workmanship. And when the job is over, you can relax knowing all work is backed by iron-clad customer protections. We're here to serve you, not the other way around!


"… excellent service from a very knowledgeable technician."
—Lawrence W. | Denver HomeownerMy system was not humidifying. I received excellent service from a very knowledgeable technician. He was quick, had a replacement valve on hand, and was happy to keep me informed of what was going on as he worked. I couldn't ask for more.

For Reliable Backflow Device Repairs and Replacements, Call Cooper!
Hours of Operation
The Cooper Green Team is open 24 hours a day, 7 days a week.