Complaints

This profile includes complaints for Delta Mechanical Inc's headquarters and its corporate-owned locations. To view all corporate locations, see Find Local Branches.

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  Delta Mechanical Inc

  6056 E Baseline Rd Ste 155 Mesa, AZ 85206-4805

  
• 

  Colorado Delta Mechanical Inc

  2475 W 2nd Ave Ste 35 Denver, CO 80223-1055

  
• 

  Delta Mechanical Inc

  6052 E Baseline Rd Ste 155 Mesa, AZ 85206-4816

  
• 

  Delta Mechanical Inc

  2323 Eldridge Pkwy Apt 528 Houston, TX 77077-5261

• 

  Delta Mechanical Inc

  111 18th St SE Rio Rancho, NM 87124-2663

The complaint text that is displayed might not represent all complaints filed with BBB. Some consumers may elect to not publish the details of their complaints, some complaints may not meet BBB's standards for publication, or BBB may display a portion of complaints when a high volume is received for a particular business.

• Initial Complaint

  Date:06/17/2025

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  I am writing on behalf of my elderly mother. In April it was found that she would need to have her house repiped due to a leak under the slab. She has a flat roof house and therefore it requires cutting into all the drywall to run the piping along the roof. For some reason which I am not sure of they also dug up her front yard and her bill is now up to $50,000. At this point all she needs is the final report for the insurance company and the restore company to put her house back together. She, along with the insurance company and the restore company have been calling trying to get the final report so she can get her home back in order. Seems like a simple request. Unfortunately, no one from Delta Mechanical will return a call to any of them. This work started in April and it is now mid June. One has to wonder what they are trying to hide. Why else would they not do something as simple as send the final report so my 90 year old mother can finally move on. Extremely Poor customer service. My next call is going to ROC, this is ridiculous and needs to be resolved.

  

  Business Response

  Date: 06/18/2025

  Revised estimate with diagnostic was sent to the customers email on file. 

• Initial Complaint

  Date:04/01/2025

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  I called Delta Mechanical to repair the water heater at my rental house in *********. They installed the water heater in 2020, as a recommended contractor through **************. They came out to do the repair, but I never heard back from the technician. My tenant said the technician told her that he ordered a part (warrantied through Rheem.) However the invoice of $189 did not include any information about the part ordered or service completed. The part was supposed to arrive in 2 days (expedited delivery) but never arrived. I was never contacted by the technician or Delta Mechanical. I called Delta Mechanical 3 days after the technician's appointment. Delta Mechanical said that the technician was no longer with the company, and that they did not have any information about the part that was supposed to be ordered. They told me that I had to contact Rheem to find out if a part was ordered. This was a Friday afternoon, and ***** was closed until Monday. They said that once I found out about the replacement part, they would charge an additional $389 to return and repair the water heater. I thought that was ridiculous, and then I asked for a refund of my $189, since I did not actually receive any service from Delta Mechanical. I received an invoice from Delta Mechanical who had already charged my credit card, but there was no information on the invoice about the specific actions taken. The representative from Delta refused to provide a refund, and told me that a manager would call me back. I never received a phone call. I decided to dispute the charges with my credit card, but the vendor was listed as **************, not Delta Mechanical. Even though I never called The ********** their name was not listed on my invoice anywhere. I am not under any type of service contract with **************. I called ********** to get a refund, who stated that they couldn't provide the refund. I am hoping to resolve this with Delta Mechanical to get my money back. Invoice attached.

  

  Business Response

  Date: 04/09/2025

  Hello, the $189 charge is for a service call. This is for the call and diagnosis at the home. All companies charge service calls. $189 is relatively low for the area. The warranty is not through Delta, it is through the manufacturer. We suggest dealing with the manufacturer directly since there is no labor warranty, only parts. They also have local contractors they can send out. A refund of the service call will not be issued as the service call was completed. ***** will have all documentation of the technician calling in and can help assist over the phone in providing the details of what part is needed. 

• Initial Complaint

  Date:08/08/2024

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  delta mechanical installed a new hot water tank for me (i hired *********** in april 2023 and when they took out the old one they cut the overflow line and never capped it. in july 2024 my neighbors hot water tank went bad and it overflowed into my unit from that uncapped line. i did not know where the leak was coming from so i called a plumber and he saw the water coming from that pipe and capped it and said they should not have left an open line. i do have a receipt from the plumber stating this.

  

  Business Response

  Date: 08/09/2024

  Hello,

  The customer's original T&P was run incorrectly and not per code. A T&P should never be tied into another t&p for this exact reason. When the line was abandoned, we were not aware that the line was incorrectly tied into another unit. Additionally, a leaking t&p valve on the neighbors faulty unit was ultimately the the cause. The customer is out of labor warranty and the customer's neighbors unit is not and was never under warranty by Delta Mechanical. 

  Customer Answer

  Date: 08/09/2024

  This is not a warranty issue, when they cut the line during the installation and removal of my old hot water tank they should have capped that and not left it open. This wasn't installation issue.

  

  Business Response

  Date: 08/09/2024

  The unit next door was improperly plumbed into the abandoned line. This was not done due to Delta. The capping of the line is not necessary provided the plumbing is done correctly. 

  Customer Answer

  Date: 08/17/2024

  I think this is very poor customer service and I would like to make other people aware of this. When they cut that line as plumbers they should never have left that uncapped. They wanted to charge me another $189 to come out and look at it again. This had nothing to do with my warranty it was an installation issue and error on their end.

• Initial Complaint

  Date:07/30/2024

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  I purchased a toilet from ********** and paid for installation as well as a mandatory delivery fee. Delta Mechanical was assigned to install my toilet. The upstairs toilet was installed on April 30, 2024. After the installation I could hearing water dripping in the ceiling downstairs below the toilet after use. I called Delta Mechanical and 2 technicians came to my home. There was no evidence of water leaking around the toilet but water could be heard dripping in the ceiling. I was was told not to use the toilet but they could not detect the problem unless the ceiling was opened. That night I awoke to the toilet running so I turned off the water to the toilet. After two days of calling and leaving messages, I finally reached Delta Mechanical. Detailed notes are attached regarding my interaction with Delta. I was told to call a leak detection company which I did. The report from All American Plumbing is attached. The report states that a wax ring installed by **********/ Delta Mechanical failed due to improper installation. This resulted in water leak from second floor to first. Immediately I called American Response Team for water restoration services. The bill is attached. Sewer water was sitting in the ceiling for 3 dues due to Delta Mechanical not responding to my messages left with personnel to call me back. After contacting **********, my claim has been with **** *** at ******** ***************** since May 30th. Friday June 28, *** ****** from ****************** who represents Delta Mechanical was assigned to the claim. Friday, July 26, Mr. ****** told me he still could not verify their policy. Enough is enough. I have called and emailed every two days to try to get updates about my claim. Today is July 30th. It has been 3 months since the toilet install. I will not have Delta Mechanical in my home to repair the plumbing. I contracted with ********** and not Delta Mechanical. ********** should be responsible for compensation and repair costs.

  

  Business Response

  Date: 08/07/2024

  The customer is dealing directly with our branch manager. 

  Customer Answer

  Date: 08/07/2024

  My claim is in the hands of ******** Claims mediator for **********. I was told by **** ***, case manager, on Thursday, August 1, 2024 that Delta Mechanical would get back to her about reimbursement for my claim. I spoke with **** yesterday, August 6th and she had not heard from Delta Mechanical. I am still waiting for news of compensation amount. We are now over 3 months in from the faulty toilet installation.

• Initial Complaint

  Date:07/08/2024

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  April 2024, I contracted with ********** for the installation of two new toilets in my home. ********** subcontracted the work to Delta Mechanical. This decision has unfortunately led to a series of significant issues and damages in my home.The installer from Delta Mechanical, who arrived to carry out the installation, admitted to having smoked marijuana earlier in the morning. This revelation was deeply concerning and indicative of potential negligence. During the installation process, the installer damaged both new toilets, necessitating the reinstallation of the old ones.Resulting Damages:1.Toilet Reinstallation:The reinstalled old toilets were not properly installed, leading to leaks.These leaks caused substantial water damage to my flooring and one of my doors.2.Flooring Damage:The installer scratched the flooring in several areas, with the damage ranging from small 1-inch scratches to a significant 17-inch scrape and a large 10x10 inch semi-circular scratch.The water leaks from the improperly installed toilets exacerbated the flooring damage, necessitating comprehensive repairs.The installation issues and subsequent damages have caused significant stress and inconvenience. The damage to my flooring has impacted the aesthetic and functional integrity of my home, requiring extensive repairs. Additionally, the persistent leaks have created an environment susceptible to further water damage and potential mold growth.Despite numerous attempts to resolve these issues with Delta Mechanical and *********** the responses have been inadequate. I have been repeatedly ignored and my concerns have not been addressed, leaving me with a damaged home and unresolved issues.The situation has left me dealing with the aftermath of poor installation and lack of accountability from both ********** and Delta Mechanical. The damage to my flooring and bathroom requires urgent attention and repair to restore my home to its original condition.

  

  Business Response

  Date: 07/08/2024

  The customer has been offered $1500 to resolve the issues related to the flooring. The customer did not have a new toilet installed, therefore there is no warranty on the existing toilet. The existing toilet is the cause of the leak. The fill valve needs to be replaced. Delta does not repair existing toilets. We suggest the customer file a claim with their home owners insurance OR accepts the $1500 and uses the money to fix the alleged damage. 

  Customer Answer

  Date: 07/09/2024

  
  
  
  I am writing to express my disappointment and frustration regarding the recent services provided by your plumber, Josh, on 4/25/24. Unfortunately, the experience has left me with two major concerns that require immediate attention and resolution.
  
  
  Firstly, during the plumbing work, Josh broke two of our toilets due to his lack of knowledge about the new style. As a result, we were forced to reinstall our old toilet, which has been causing a persistent leak ever since. This not only inconveniences us but also poses potential damage to our property and additional repair expenses.
  
  
  Secondly, I was disheartened to discover that Josh also carelessly scratched our two-year-old floors. The scratches are approximately the size of an exchange pizza pan, and they have significantly impacted the aesthetic appeal of our flooring. I believe that such damage could have been easily avoided with proper care and attention during the plumbing work.
  
  
  Given the circumstances, I kindly request that Delta Mechanical takes immediate action to rectify these issues. This could include repairing the leak caused by the improper installation of the old toilet and addressing the scratches on our floors. I hope that your company values customer satisfaction and will take this matter seriously.
  
  
  Additionally, I would like to express our appreciation for the offer of $1500 from Delta Mechanical as compensation for the damages caused. However, upon careful assessment, we believe that this amount is not sufficient to cover the expenses involved in fixing both the flooring and the plumbing needs. We kindly request a reconsideration of the compensation amount to adequately address the damages incurred.
  
  
  I look forward to a prompt response and a resolution to this dispute. Please feel free to contact me at your earliest convenience to discuss the next steps.
  
  
  Kind regards,
  Ginsi Robinson

  

  Business Response

  Date: 07/10/2024

  The old toilet was reinstalled and the broken toilet was to be returned and replaced with a new one. The customer not providing the new one in a timely matter is not the fault of Delta. Additionally, the fill valve breaking several weeks later is also not the fault of Delta or the technician. $1500 we feel is more than sufficient to fix the alleged damage caused to the floor from the original attempt to install the toilet. Any damage caused by the old toilet, which has no warranty, is not covered or the responsibility of Delta. 

  Customer Answer

  Date: 07/14/2024

  In the videos provided. The fill valve is not broken. No alleged drips, from the back of the toilet, top of the toilet. I’ve been closely monitoring. 
  

  Home Depot Management, Delta Mechanical management were all updated via text regarding the urgency of getting the scratches fixed. Both companies passed blame off to each other. I also updated all parties regarding my retinal detachment surgery that was delayed due to this inconvenience. I’m BLIND in 1 eye. 
  

  Yes we have old toilet. Is the reason for getting new toilets. 
  

  I’ve provided evidence of poor workmanship, damages to my home, delayed surgery, plumber working in OUR HOME intoxicated, negligently scratching our floors, breaking 2 brand new toilets, not securing the reinstall of the old toilet with caulking, Yet Delta  mechanical takes is painting a filtered picture of the incident. This is not fair to a paying customer!  My home was disrupted. Are more videos or pictures needed? Possibly a video of the plumber forcing the new toilet to fit? The bent flange, how did it get bent?? The fill valve. Why isn’t it spraying water out of the tank as it was after seltzer mechanical reinstalled the toilet for the 4th time? How long does 1 toilet install take? Delta plumber was getting calls from his boss, teller him for being at our home for over 4 hrs, and did not complete the job. 
  

   

• Initial Complaint

  Date:01/22/2024

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  On 21Jan2024 I went to HomeDepot to buy a hot water heaterI called the ***** number listed in their store for installation and the phone call went to Delta Mechanical, between 1-2 pm MST, the individual I spoke with regarding the Hot Water heater informed me what water heater I was interested in purchasing, I told him I wanted to purchase the ************************************************************************************ a price of $1911he informed me that he had an install availability date for 22Jan2024 between **** pm or 2-4 pm. I informed the member that I would take the **** pm timeframeHe had my phone number and email addressHe informed me that my credit card would not be charged until after the installation was completed and that I would get called 30 minutes before the installation team would arriveOn 22Jan2024, at 3:15 pm, I called the ********** phone line, ************* for Water Heater installation and it took me to their audio response line, then to Delta Mechanical, after 3 attempts to speak with someone regarding my install, I was put on hold several times then dropped from the calls twice, I finally asked to speak with a supervisor named ****. I explained the above situation and was informed there was nothing he could do to get a water heater installed for this afternoon for a zip code of *****. I took the day off for this install and Delta offered to schedule me the next day, but I couldnt be available the next daythey cost me $468, my days pay, for poor customer service. **** was no help.

  

  Business Response

  Date: 01/23/2024

  We apologize for the inconvenience this may have caused you. 

• Initial Complaint

  Date:11/17/2023

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  We contracted with Delta Mechanical to install two (2) tankless water heaters at ************* for $8,500. Delta Mechanical opened the permit to install the two (2) tankless water heaters, provided the labor and materials to install, completed the installation, but DID NOT conduct an inspection with the **************** to close the permit and did not install the tankless water heaters according to code. After waiting a year for Delta Mechanical to conduct the inspection, fix any work not conducted to code, and close the permit, they refused to do so and we had to hire another plumbing contractor to re-open the permit, conduct the inspection, fix corrections from the inspection, and close the permit. Details follow;-Original Transaction Date: 26 Jan 2022.-Amount Paid to Delta Mechanical to conduct the work: $8,500 -Business committed to opening the permit, conducting the work according to published building/plumbing code, closing the permit. They did not finish the last two items.-We asked Delta Mechanical repeatedly to conduct an inspection, fix any corrections, and close the permit. Since they refused to do so we had to pay another plumbing contractor to do this work. The replacement plumbing contractor charged us a total of $3,410 to do this work. Delta Mechanical has refused to provide any reimbursement for this work. We are asking Delta Mechanical to reimburse a total of $5,000. $3,410 in direct costs for hiring a replacement plumbing contactor and another $1,590 for the risk and effort we incurred to correct the issue.-Delta Mechanical has not attempted to resolve this issue.-Please see attached Delta Mechanical Invoice *******, Roto Rooter Invoice 564-358190, and Roto Rooter Invoice 564-358402

  

  Business Response

  Date: 11/18/2023

  It is the homeowners responsibility to close out a permit. All permit details and instructions are sent to the homeowner on how to schedule the inspection. The letter sent also details that failure to complete the permit in the allotted time may result in additional fees that the homeowner is responsible for. This information is sent via email and **** to the homeowner directly. We apologize for the inconvenience. 

  Customer Answer

  Date: 11/19/2023

  Delta Mechanical is clearly attempting to obfuscate the fact that they did not perform their original work to published code.  They were given an opportunity to correct their work according to the inspection conducted and they refused.  If they had conducted an inspection with the ****************, instead of attempting to burden the owner with their responsibilities, this would not be an issue. 

  

  Business Response

  Date: 11/20/2023

  The purpose of closing out a permit within the allotted time is to address code deficiencies, at no charge. Once a permit is administratively closed by the city, the installation is then removed from the contractor and the burden is placed on the homeowner. The documents sent to every homeowners specifically mention that all cost incurred due to not closing out the permit in the allotted time, will be the responsibility of the homeowner. The homeowner chose to ignore the permitting process. Delta sends reminders via email and **** to the homeowner to get the inspection completed. Again, the documents also state all cost would be assumed by the homeowner if ignored. This is because codes change and if a permit is pulled in one year and not closed out for several years, codes may change. This is standard industry guidelines. We apologize for the inconvenience.

  Customer Answer

  Date: 11/24/2023

  Delta Mechanical is clearly trying to absolve themselves of any responsibility to correct their original work that was not installed to code.  As a plumbing subcontractor their level of knowledge of construction permits, inspections, and plumbing code exceeds that of their customers and they are clearly trying to take advantage of customer ignorance of such matters.  Our position stands that Delta Mechanical was in a position of superior knowledge and competence in this matter and, instead of using that knowledge and competence to conduct a plumbing inspection with the ****************, make any corrections to the installation, and close the permit which would be in the best interests of all parties, they attempting to exploit the homeowner's lack of knowledge and abandon any responsible or ethical behavior in their work or conduct.

• Initial Complaint

  Date:11/15/2023

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  On 9/23/2023, I got a hybrid water heater installed at my property. I previously had a gas water heater and wanted to convert to a full electric one. I spoke to their sales **** several times. I was told that I needed to install an electric line first, so I got that done. Then I was able to place the order for a full electric WH and scheduled the install. One or two days later, I got a call back and was told that according to their permitting ****, the zoning for my zip code does not allow full electric conversion. My only other option was to either get a hybrid, which was ~3x the cost, or stick with gas. I was not happy at all because through all my interactions with the sales team, there was never any mention of zoning that could affect my options. So, I later chose to go with a hybrid anyway because I needed to replace the old WH and I didn't want a gas one. When the city inspector came out to inspect the install work on 10/16, it did not pass. I also learned from speaking with the city inspector that I was likely scammed. He said he's never heard of any restrictions and he's seen MANY people convert to full electric. He even called his **** to confirm that moment. And later in the day, he called to inform me that he also got confirmation from a mgmt in the *************************** that there has never been such restrictions. I immediately called Delta's customer service to inform them of this and that I wanted to get a full electric one like I initially called for. The ** Rep told me I would have to pay for the labor again and I refused because that's an error they made. They forward my case to their supervisor, *****. He never called me. I called & finally spoke with him on 10/23. I requested to see documented proof of this zoning restriction. He said he needed to investigate & gather more info, which is fair. But, it's been 1 month since speaking with ***** and there's still no updates. He also avoids my calls. If this continues, I will seek legal action.

  

  Business Response

  Date: 11/23/2023

  This is being handled. 

• Initial Complaint

  Date:09/18/2023

  Type:Service or Repair Issues
  Status:

  AnsweredMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  Delta mechanical installed a tankless water heater in my house. I had it installed in a crawlspace and they put a ********** outside my back door. I am unable to build a deck due to the size of the vents that could have gone on the other side away from the door. I have called numerous times to have them move the vent because the installer never checked before drilling holes in my house and they refuse to answer. I would like the vent moved. The installer should have checked where we wanted the vents before installing them.

  

  Business Response

  Date: 09/19/2023

  Hello, the approval of the venting is always discussed with a customer prior to installation. The documents were all signed off as the customer was satisfied and accepted the work, as installed. The Installation Customer Agreement states the installation is agreed to and signed off. We can come back and discuss rerouting the vent but it would be at an additional cost, if possible. 

• Initial Complaint

  Date:05/10/2023

  Type:Service or Repair Issues
  Status:

  ResolvedMore info

  Complaint statuses

  Resolved:

  The complainant verified the issue was resolved to their satisfaction.

  Unresolved:

  The business responded to the dispute but failed to make a good faith effort to resolve it.

  Answered:

  The business addressed the issues within the complaint, but the consumer either a) did not accept the response, OR b) did not notify BBB as to their satisfaction.

  Unanswered:

  The business failed to respond to the dispute.

  Unpursuable:

  BBB is unable to locate the business.

  Delta Mechanical installed my water heater a couple of years ago. I need to release some pressure from the relief valve and notice corrosion due to a poor installation.