Diamondback Plumbing & Cooling

Diamondback Plumbing & Cooling operates out of Phoenix as a focused plumbing outfit serving multi-family and commercial properties. They handle the full range of mechanical work needed in larger buildings, from routine pipe repairs to system upgrades that keep apartments and offices running without interruption. Their crews work on both plumbing lines and related cooling equipment when those systems tie into the same mechanical setups, which is common in this market. Phoenix heat and dry conditions put extra strain on pipes and fixtures, so the company stays ready for jobs that pop up from hard water scale and temperature swings that crack older lines or clog drains in high-use buildings.

Their work centers on commercial plumbing tasks like main line replacements, multi-family unit repairs, and scheduled preventative maintenance that catches leaks before they flood units or shut down common areas. Crews also tackle HVAC tie-ins for properties that need coordinated mechanical service rather than separate vendors. In Phoenix the summer load means frequent calls for clogged sewer lines from heavy usage or failed pumps in cooling setups, and the outfit responds by sending techs who know how to isolate problems fast without tearing up finished spaces. Homeowners and property managers in the area often face sudden water pressure drops or recurring drain backups tied to the local soil and water chemistry, and Diamondback keeps those fixes moving by sticking to straightforward diagnostics and parts that hold up under the desert conditions.

Customers give steady marks for solid quality on repairs that last, quick turnaround when emergencies hit, straightforward pricing without surprise add-ons, and clear updates throughout each job. That consistency across hundreds of projects adds up to a strong track record for a commercial-focused crew. DIRT Score 4.38 from 706 reviews on Finds.

DIRT Score = confidence-weighted rating across verified review platforms. How is this calculated? →

“Unfortunately, I am forced to use this plumbing company by my landlord and would never choose to work with them again if I had a choice. Their lack of professionalism and communication has been awful. They were approved to come on a scheduled day and then failed to communicate if or when they would return. We were left without working toilets for several days, and I had to call their main office myself just to get a vague timeframe, which they then did not honor. They showed up unannounced, including on a Saturday night, without authorization. When my employee arrived the next day, our business had been left in unacceptable condition: mud tracked throughout the studio and smeared all over the bathroom. This is a client-facing business, and leaving a space in that condition is completely”

“I'm a tenant at an apartment property that is being serviced by Diamondback Plumbing. Their service techs named Edgar and German did a fantastic job of replacing and installing a motor device for the A/C unit in my apartment that has very narrow ceiling space. They were knowledgable, professional, and prompt in their service. And I am quite thankful as a result.”

“I live in an apartment complex. They choose this company to do all the plumbing. Worst mistake they could have ever done. My hot water hasn't worked since Friday 6/12/26. It is now Monday 6/15/26. Still no hot water!!! They have been working on the same project for months!! We were notified they were coming out tonight between 5 pm and 11:59 pm. I feel they just put a bandaid on the problem so they can make more money off my apt complex. Never hire them!! And they need to stop calling themselves Diamondback Plumbing!! Our Baseball team is better than this company!!”

“Just had to fire my old plumbing company after 7 years - I got an 8K estimate for unecessary work! Diamondback Plumbing came in and solved the problem the NEXT day. The tech (Jason) was super friendly and offered me some great advice going forward. Will DEF call them again to fix my plumbing. Highly reccomend.”

“Loyal customer that will no longer use this company. Been using them for over 20yrs until now. Was told that the kitchen and bathroom faucet, that I bought myself, would be $650.00 to replace. I get there is new ownership, however price gouging, let alone to long time loyal customers, I'm out. Congratulations, you have lost a long-time customer.”

“I called to have a kitchen facuet that I provided installed. Was told that the service call was $197.00 got billed for $249 because that is the charge for install a kitchen facuet. I should have been told that when I made the appointment. I would have shopped around. $249 and they were there less than 45minutes. A flat rate is not the best way to keep customers happy. Needless to say I have used them for years but that was my last time. One star is too much but I can't post with no stars”

“I work for a apartment complex and we have used diamondback for a while now and they are ever professional and knowledgeable no matter if it comes from replacing pipe or having a rooter or jeter work done on your property they will go above and beyond for their customer to do the best job that they can and provide as much information as possible so you feel comfortable in the repairs that need to be made. Also a big shout out to there Field supervisors they are some of the most knowledgeable and well experienced staff that they have and all of their staff are all pleasant and polite when it comes to dealing with people around the property or with staff always a great experience working with diamondback thanks guys keep up the great work.”

“Shout out to Shannon and all our guys at Diamondback Plumbing for Once again, showing up early, providing 5 star service, and giving us the most bang for our buck! Shower valve while I wait? Yes Please! Drywall cut neatly and put back? Well thank you very much fellas! We will continue to call Diamondback for as long as I work for Greystar! Thanks again Diamondback! Richie”

“If you have an issue that you don't want to fix but want to keep throwing money at it, these are your guys. Casa Del Pueblo has contracted them for years to fix the chiller system and somehow things only ever get worse after they work on it. Every time they do work here, my AC and my neighbor's AC as well as others stop cooling. Recently, I kid you not, their solution to a potential leak was to place plastic bags beneath pipes in case those pipes leak to prevent the system from shorting out should if it should get wet. This is stuff you see in cartoons when a ship is sinking and the characters start duck taping the walls. They also covered each compressor on both chillers with trash bags just in case of water leaking through the roof or from pipes. This both a tragedy and a comedy at the”

“I live at Capri on Camelback apartments. The apartments use Diamondback Plumbing as the plumber for the complex. I have been trying to get a leak fixed in my bathroom that is coming from the toilet in the apartment above me for two weeks now. The plumber finally came last night. He cut a hole in the ceiling and then left saying he would be right back. It is now the next morning and he still hasn’t come back and the leak is still going strong. I have had no additional communication from the plumber. The apartment complex said that they found out that the plumber had left the complex without telling them. Diamondback didn’t contact me or the apartment complex. Terrible communication and service!! Wed”