C4 Plumbing
Company Overview
In light of COVID-19, we prioritize the safety of our clients and customers. We aim to be available for all service needs and installations. We are here 24 hours a day, 7 days a week, offering exceptional plumbing services in the Denver Metro area. We specialize in residential and light commercial plumbing, full water purification systems, and energy-saving solutions.
Founded in 2017 by Mark, C4 Plumbing, Heating & Cooling boasts more than 22 years of experience in the Denver Metro area. We are honored to be a locally owned and operated company. We are committed to hiring team members who embody honesty, integrity, and trust. Our efforts focus on maintaining competitive and fair pricing. Our mission is to be recognized by you as a trustworthy plumbing service. We hope to have the opportunity to prove this to you.
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
I hired C4 plumbing to come check out my nonfunctional air conditioner in early April. Two younger guys came to diagnose and clean my AC on 4/7. The workers power washed my AC unit before telling me that was their plan, and now the AC won't switch on at all. They told me that I was ""low on freon"" but they didn't have any freon available and would get back to me. Despite my calling multiple times and getting a promise of service and ""put on the schedule"" on several different days, I still have a nonfunctional AC unit a full month later. I have a medical condition that makes me particularly sensitive to being exposed to heat for prolonged periods of time, so this entire month of fluctuating temps has resulted in making me quite ill.
I'm fully aware that air conditioners are closed units that are designed to not allow freon to escape, and that freon doesn't need to be replaced or ""topped up."" Instead, my unit is probably leaking. I'm also aware that power washing an AC until will most likely damage the coil. I'm not thrilled that the AC techs either thought they could scam a woman or that they weren't knowledgeable enough to diagnose, clean, and fix the AC properly. I should have listened to the negative reviews before hiring. Zero stars.
Concerned C.Freezing temperatures caused a pipe to burst in our laundry room. Called a number of plumbers but C4 were able to get to us in the shortest time frame. Plumber was punctual and gave us an estimate before work was started. Excellent communication and they made sure we understood what was being done to fix the problem as well as mentioning things that could be done to avoid this issue in the future. Work was fast and cleaned up very well. I highly recommend their services
I've never written a review before, but thought other people need to know. This company significantly overcharges the customer. We had C4 plumbing come in to replace a 2 foot section of ABS drain pipe. The final charge was $900 with a 10% discount. The actual labor took less a half an hour. Complete ripoff! I will never use C4 again and if someone asks who I might recommend I will start off by saying who not to use-C4. Buyer beware.
Had an outside pipe leak in a newly owned house. Mark talked me through how to shut it off over the phone. He did not have to do that, so a thousand thanks to Mark. We can now get landscaping company out to blow lines!
David S.I try and refrain from award all stars because it can cause grade inflation quickly . I stop at just before the hugest rating. So understand what I mean, please.
C4 Plumbing merits close to full rating. In terms of Local, nearby, live person, who works there, phone service, respectful, sooner than estimated in all aspects, and finally, in repair or return-to-Service efficiency and economical.
My water system repair was in a tight space, hard to get to, and compounded by other difficulties, including never at the best time to fail.But Technician M, made a quick evaluation, offered a quote, and was finished within an hour.
I find it difficult to point to any areas where improvement could be suggested.
I can't offer a picture because I am in bed after a relaxing shower. I am going to sleep well.
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!

























