Mike Diamond

★★☆☆☆ 1.6 / 5 (73)
Emergency Call


: 154 University Pkwy, Pomona, CA 91768
: (800) 446-6453
: https://mikediamondservices.com

Company Overview

Mike Diamond Plumbing has proudly served the greater Los Angeles and Orange County regions for more than 40 years. The knowledgeable plumbing team at Mike Diamond is ready to support you and your family with any plumbing, drain cleaning, or HVAC issues. Expect the Smell Good Plumber to show up on time, come ready, and complete the job to your satisfaction, guaranteed. If you have a clogged sink, a toilet that won’t flush, or need a new water heater, call us anytime for urgent plumbing emergencies that can’t wait.

Business Services

  • Drain repair
  • Faucet repair
  • Garbage disposal repair
  • Gas line installation
  • Gas line repair
  • Hot water recirculation pump installation
  • Hot water recirculation pump repair
  • HVAC installation or replacement
  • HVAC system repair
  • Plumbing inspection
  • Plumbing installation or replacement
  • Plumbing repair
  • Sewer installation
  • Sewer repair
  • Sink repair
  • Toilet installation
  • Toilet repair
  • Water heater installation
  • Water heater repair
  • 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

Dan S.
★★★★★

Every several months, my kitchen sink backs up. I grab my 50ft snake, attach it to my drill, and do what I can. Every couple of years, I rent a snake and try to clean the pipes. It lasts a few months, backs up again for several days, out comes my snake and power drill.
This time I decided to hire a professional, so I called Mike Diamond ""the smell good plumbers"" for the $99 drain clearing special.
Daniel and Steve came out. I was wearing my face covering and doing the physical distance thing, so I can't tell you if they smelled good or not, but their uniforms were clean.
They ran a snake, much longer than my Home Depot one. My drain was running faster, but not what I had hoped for. Daniel asked how long this problem had been going on? I told him my grandmother bought the house in the 70's and started having problems around the 90's, my mom inherited it and had problems now and then, and by the time we got the house about 5 years ago, it was a constant thing. Have the pipes ever been power cleaned? No, I can assure you they have not. My grandfather and my step-dad were DIY'ers and would never hire a plumber.
Daniel explained the power cleaner was a nozzle with one jet going forward and three (?) going backward that blasted the pipes clean, but it runs about $550. My wife said do it.
The decades-old gunk that this power wash brought out of the pipes!!! I kid you not, chunks of old solid grease the size and shape of a twinkie came out of that pipe! Daniel and Steve ran that nozzle back and forth, bringing up chunks of varying size and shape for about 35 minutes until nothing else came up. Tomorrow the camera guy is coming back to inspect the pipe (he had several other calls and couldn't come out today), and if needed, they will blast the pipes again, but I'm satisfied that by the next time I need my drill-operated snake again, I'll have long misplaced it and need to go buy a new one!
My wife and I are VERY pleased with the work of Daniel and Steve, of Mike Diamond Plumbing!!!

James M.
★☆☆☆☆

Worst customer service! I paid the ""$99.00 to unclog any drain"". I was told by customer service that the guarantee is only good if you purchase an addition warranty. I was never informed or offered an additional warranty.

Lisa F.
★☆☆☆☆

Tech #6287 was called out to clear the lines in the toilet and the bathtub. We were told he would be there around 8:00 pm after the call he was on. So at 9:45 tech#6287 Robert shows up and takes a look at the bathroom and ask do you have a access to the bathroom from the outside and my man said yes, takes him to the backyard and I hear this Ginger Robert tech #6286 tell my man it will be $3,000.00 to get access under the house to clean the lines. WTF YES THE QUOTE IN WRITING IS $2950.00.... This POS didn't offer to put a camera down the toilet to see where the problem might be. HE ROBERT TECH #6287 SHOWED UP AT 9:45 and the simple quote was given at 9:57. IM NOT LOOKING TO GET SCREWED OVER BY YOUR HYPE OF MIKE DIAMOND AND NO THERE WAS NOT ENOUGH TIME TO SEE IF THIS POS SMELLED GOOD BECAUSE NO HE DIDN'T HE SMELLED LIKE IM GOING TO F THEM OVER AND MOVE ON GO GO HOME TO HIS FAMILY. Was he friendly No. He didn't give 1 or 2 Shits about what was the problem!!!!

Christie J.
★☆☆☆☆

Called at 5:30pm due to a small leak I discovered outside my house. That was considered an after hour call which was hefty, $260 for them just to come to my house. The original clerk said they would send me an email and then call half hour later to say when they would arrive. Received the email and no call after 1/2 hour. Called them again 45 minutes later. Received a different clerk. I asked when I could expect someone to call me when they were coming. She explained I had to reply on the email to get them to come out. The original person did not share that important detail. The plumber finally arrives an hour after this second call. Looks at my leak, says its unrepairable. Then tells me, he cannot turn off my water because it's missing a turning dial/valve. Then we found another faucet to slow the water down. He literally told me it was frozen. I looked at him, bent down and turned the valve myself. What a complete idiot!! Did absolutely nothing for me but came with a big truck i'm certain, loaded with equipment.
DO NOT WASTE YOUR TIME WITH THIS COMPANY! They rip you off!!!! $260 for absolutely nothing! Disgusting mannerism and totally inept!!!

Jason D.
★☆☆☆☆

Scheduled appointment and they never showed up. I called and emailed and after 3 days received zero response.

Ercument A.
★☆☆☆☆

They advertise ""smell good plumbers $99, it doesn't matter if it is kitchen sink or main line stoppage"" DON'T YOU EVER BELIEVE this. Technician named Blas came, wanted to charge $198 for a simple kitchen sink. He invented excuses. We called his manager Irving Sanchez he invented more ridiculous new excuses. Since I had to cancel my appointments and waited all afternoon so I had to accept. He unscrewed by hand few plastic pipe knots and snaked it for15 mins and charged double. I will never ever call them again.

Tim L.
★★★★★

Technician Brian M. came out to help us with water heater. Very prompt, very professional. Did a great job!

Neil S.
★☆☆☆☆

I've been meaning to get this review done, so here goes. I've used Mike Diamond several times in the past to clean the main line at my house as well as various other lines, and have basically and generally been happy. So I called them with regard to a leak under the sink from a mini water heater at my office in Whittier. First, I already knew that the leak was coming from the unit, but they informed me they needed to charge $76 just to come and diagnose. What a surprise it was as I said. They then proceeded to quote me over $2000 to install a new one. Never mind that these units are available for about $200 on-line. So I asked if he would simply bypass the heating unit which would stop the leak and allow us to use the sink, which he then quoted at over $300. We paid the $76, and I picked up a $2 brass cap from Home Depot and capped the valve to the heating unit and fixed the problem with water back on to the sink. Total time to install; less than two minutes. In summation: I will never trust, use it recommend Mike Diamond Plumbing EVER again.

Dane L.
★☆☆☆☆

I was attracted to the add for $99 sewer drain clean out. The first
employee to come was unable to clear the line. I have lived here
for decades and had the sewer drain cleaned many times. The new
solution offer by Diamond was to cost $1,600.00 by a subcontractor
I fear it was a bait and switch deal with tremendous profit for Diamond.

Michell S.
★★☆☆☆

I have tried 3 times calling Mike Diamond Plumbing all the radio commercials indicate they will come over and fix your problem etc.... Well in the 3 times I have tried to use them they NEVER have anyone available on that day it is the next day or the following or the following. When everything is backed up and I can't use any of my plumbing I certainly don't need someone coming in 2 or 3 days. Don't waste your time dialing this number!

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