C4 Plumbing
Company Overview
During the COVID-19 pandemic, our top priority is ensuring the safety of our clients and customers. Our goal is to be accessible for any plumbing service or installation. Our team is available 24/7, delivering high-quality services across the Denver Metro area. Our expertise lies in residential and light commercial plumbing, complete water filtration systems, and other energy-efficient upgrades.
Founded in 2017 by Mark, C4 Plumbing, Heating & Cooling boasts more than 22 years of experience in the Denver Metro area. We take pride in being a locally owned and operated business. We strive to employ individuals who value honesty, integrity, and trust. We are dedicated to offering prices that are both fair and competitive. Our mission is to be recognized by you as a trustworthy plumbing service. We are eager to show you our commitment to quality and trust.
Our focus is on creating lasting relationships and building trust, one client at a time!
Business Services
- Bathtub installation
- Bathtub repair
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal installation
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |
Recommended Customer Reviews
Samir A.Caught a leak from our kitchen sink basket and Jeremiah came out the next morning. Fixed it all up and gave us the chance to swap out some of the problematic piping that was causing some unrelated odor issues.
Not the cheapest guys around but you get what you pay for, *especially* with plumbing. I know first hand that water has a way of making you ultimately pay for shoddy work so it was worth it to have a master plumber service something we use so often.
After the job was done I had asked about a purifying system and he was ready with literature and was very knowledgeable on just about everything I asked him. He was very personable and just an overall nice guy to talk to.
Highly recommended and will reach out again for any other plumbing work. A+
CO C.Do not use this company! We made an appointment and were told the person would be here from 9:00-11:00. We switched our work schedules around to make sure that we would be available to explain the plumbing problems we were having. We called the company at 11:15 because nobody had shown up. Nobody answered the phone so I left a voicemail. 11:30, called again, no answer. Thought maybe they were having trouble with their phone lines so I emailed and left a message on Facebook Messenger. STILL no reply. At noon, we finally got a call saying they would be here in 45 minutes. At 12:50, they finally showed up. The kid looked like he was 18 years old but we gave him the benefit of the doubt because everyone has to start somewhere. He was nice enough but he had no idea what he was doing. He kept calling someone else on the phone and asking questions. He was asking us questions which we didn't know the answer to (that's why we called a plumber in the first place)! He finally figures out the problem and leaves to buy parts. An hour and a half later, he returns with the parts. We are now close to 4 o'clock. Turns out, he couldn't find the right part, so he takes a hacksaw and saws off the end of the valve handle because it's too long! Then he proceeds to take our small trash can, dumps the trash out ON OUR FLOOR and uses it as a bucket to catch the water! Seriously!? Next, he starts to solder the pipes together and instead of putting some protection over the insulation he burns through the plastic and fills our house with acrid smoke. Around 5:30, he is finally done. We pay $700 for incredibly bad service just to get it over with. The next day, we realize that he didn't put the manhole cover back on our main water line correctly after our kids tripped over it. In the process of putting it back on, we realize that he has stripped the bolt. Terrible experience! We will never use this company again and would not recommend anyone using them either! Save yourself the trouble and call ANYONE else!
Uodate: per the response from the company below. We have NO problem paying for good service. The service received was subpar. The reason my husband gave permission to saw the handle off was because the worker said he couldn't find any other parts. What else were we supposed to do? This had been an ALL DAY fiasco. We have jobs and other responsibilities. Most companies are more prepared with parts, especially when they know ahead of time what the problem likely is. As far as previous damage, that does not give the go ahead to cause more damage, throw trash on the floor or leave a manhole cover open as a tripping hazard!
The provided an estimate to properly bolt down 2 existing toilets for $600.
Mark discovered that they did not have toilet flanges. Toilet flanges cost about $31 ea. He did indicate that it would add to the cost. The total cost came to $1,157 for 2.5 hours of his time and energy. There was no breakdown of time and materials. Be very careful if you choose to do business with C-4 Plumbing.
Mark S.I would certainly use C4 plumbing again and I highly recommend the company. I could tell in my dealings with C4 that they were knowledgeable and professional. I had a relatively simple plumbing job. Rather than up charge or replace things that didn't need to be replaced, they replaced only the critical components to stop the leaking valve. I appreciated that fact. I will definitely give them a call in the future for any plumbing needs. I don't normally post reviews of contractors, so in order for me to do so I had to be impressed!
Shani B.My kitchen sink lost pressure in the middle of cleaning up after dinner. I tried to Google a few things because hey, maybe it was simple, right? So, after several hours and a huge, watery mess, I called C4 Plumbing.
They amswered their phone right away and were able to come out within a couple of hours.
The technician was there exactly on time and got to work right away. He also spotted some leaking hoses that I didn't know were needing replacement. Everything he did cost less than the new faucet he installed!
He was also kind enough to look at a couple of other issues I was having and gave me estimates.
Fast, professional, courteous service. Very happy and will definitely recommend!
5 stars all the way. C4 plumbing will be my go to for any issues I have going forward. I noticed a pinhole leak on one of the copper pipes in my basement. It was 7pm on a Sunday so I was bracing for the worst but C4 plumbing made the process as painless as possible. I was given an ETA of 40 minutes and Mark arrived right on time. Mark's professionalism and expertise immediately put me at ease. He quickly diagnosed the problem and began repairs immediately. He talked me through each step he performed and gave expert advice if the issue should occur again in the future. The copper pipe now looks great and a potential disaster was avoided. Coincidentally, I purchased a garbage disposal unit and was planning to install it the next day. I asked Mark if he had the time to install and he did. I mean who does that? You just don't see this level of customer service anymore. He saved me half a day's work easy. All pricing was reasonable and I couldn't be happier with the results. I highly recommend using C4 plumbing.
Susan F.Mark with C4 plumbing came out to install a whole house water purifier for us. He was professional and did excellent work. Also a really nice guy! We have remodeled our whole house since we bought it five years ago and have used quite a few subs so we have had our share of good and bad, sadly more bad than good experiences. I would not hesitate to use Mark again, in fact he will be installing our hot water heater when needed. My husband was in the commercial construction industry for 40 years, he also knows good subcontractors when he sees them. If you have several to pick from, choose Mark with C4! You won't be sorry!
Mark helped us replace a hot water heater and our thermal expansion tank which was leaking. He also helped us repair our yoke from the water meter to the mainline. Mark was able to schedule the initial consultation during a weekend time which was very helpful because of our leak. From the time we reached out until the time all repairs were finished was within 3 days!! We are very much appreciative of Mark being able to fit us in and his professionalism and great work all around. Thank you Mark!
Pam B.Excellent in every way. Really appreciated Mark's help and explanations in fixing our plumbing issues. Definitely will use him again, super great guy! Had 2 great visits from Mark. Super fast and helpful!!
Working with C4 Plumbing was a great experience. Mark was very professional and to the time to get to the source of our plumbing issues. He put a plan together for how and what we would fix and prioritized what was urgent and what could wait until the next time. I am very impressed by his work and will be using him exclusively.

























