Mike Diamond Services
Company Overview
We are available 24/7. If you encounter a problem with plumbing, heating, or air conditioning, count on us for support. We promise 100% satisfaction!. If you are not fully satisfied with our work, we will correct it at no charge. Our team answers calls personally 24/7. Beyond plumbing, our experts are skilled in drain cleaning, heating, air conditioning, and electrical services. For over 35 years, Mike Diamond Services has proudly served Los Angeles, Orange, San Bernardino, and Ventura counties.
Mike Diamond's childhood was influenced by living next to a plumber. He started riding along on plumbing jobs at 14, eager to help in any way possible. Over the next five years, he absorbed knowledge and skills. In 1976, Mike's entrepreneurial drive led him to start his own business. He secured a contractor's license, collected essential tools, and began working from his truck. At the age of 19, he started his business from his parents' garage.
Mike Diamond Plumbing stands out in service and repair plumbing, heating, air conditioning, and electrical due to his focus on customer needs.
Business Services
- Drain repair
- Plumbing inspection
- Plumbing repair
- Water heater 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

So I call to get my drain unclogged because they have the special. $99 for any drain. What happens when I get a hold of them? What then becomes the amount? $200 quite plus other charges. What a rip off. Not cool. Scam artist. Misleading. Stay away. I'll never call them again not first time they try this crap on me. But last time I was less equipped to see it right away. So frustrating. Errrrrr

I believe others may have had bad or unsuccessful experiences however, I have to say I had a very good honest experience with Mike diamond plumbing tonight. We started having plumbing issues earlier this afternoon with our toilet and bathtub being clogged. We contacted our apartment manager who contacted Mike diamond to come out on a after hours somewhat emergency visit at 8:30 PM on a Sunday. Justin arrived at 8:20 within five minutes seemed to think the problem was coming from the mainline he then spent about 15 minutes working out the clog which was about 50 feet in. Explained what happened and was on his way within a 45 minute span.
The original price quoted it was 165 for the visit after hours which our apartment manager paid over the phone via credit card. And a remaining $99 fee after the pipe had been unclogged. Before performing the job he let us know the total job was $259 which included both the visit fee and the $99 to clear the clog. Everything else was great from there he has left, and all is well in the bathroom.

Mike Diamond plumbing is a total scam.....first they wanted to charge us $800 to unclog a toilet.....my husband told them to leave. We got a snake and fixed it ourselves. About a year later my 88 year old mother in law called them ( not knowing what they tried to do to us ) because her heater wasn't working. They told her she needed a new heater that would cost $5000 and a new thermostat for $400. Luckily she said no and called the Gas Co to come check the heater. It turned out all she needed was a new battery in the thermostat. Heater has been working fine. My advice is to stay far away from the smell good plumbers cause they stink.

Mike diamond repairman came to fix my wall heater , he looked at it for 10 mins and said nething he could do here.
Charged me $ 99 bucks for nething, what a waste.

Seem to be scam artists(or price gougers may be a better description).$380 to replace one washing machine valve and they replaced the wrong one. I normally do this myself, but was in a bind as I was out of town so I called them based on their commercial- big mistake as I should have checked Yelp first.
For starters, they tried to massively up sell me before they even addressed my problem- very annoying and unprofessional. Secondly, when called on their mistake of fixing the wrong valve( the valve that was not leaking), they tried to tell me both valves were leaking (as if I do not know why I called them in the first place). I do understand mistakes happen and I do not have a problem with that, but own up to it, fix your mistake, and do not blame me for said mistake.
They finally admitted to their mistake and came back to fix the proper valve (which I appreciate). However, $40-$50 dollars worth of parts and $340 worth of labor for 20 minutes of work. That is about $900 per hour. Not bad. I bought an entire cart of food at Costco, which will last almost a month, for $379. I love capitalism and have no problem paying a fair price for a good product, but come on Mr. Diamond! Let's at least be reasonable and please stop taking advantage of people in a bind.

Bait and switch. $99 quote but on arrival wanted to charge an extra $250 to carry equipment up the stairs. Said no!

DON'T EVER CALL THESE PEOPLE! HIGHLY UNPROFESSIONAL! If there was a MINUS 5 that would be our rating. After our bad experience I talked to a friend who worked professionally in the plumbing industry in LA. He said with great passion in his voice. ""They are the worst! Total ripoff artists! They were chased out of several cities for their bad, unprofessional practices!"" We called them on Christmas Eve when our hot water heater stopped working and they scheduled a visit for the next Monday morning. After 5 days of no hot water, when the service person showed, he said ""Your water heater is a GE. We don't work on those."" Period. No solution. No suggestions. No apologies. Just we don't work on those, can't help you. The appointment all along had been to fix a water heater. If that was their idiotic policy, they could have bothered to tell us from the beginning so we could have found a REAL plumber to take care of this!

Do yourself a favor, don't even bother getting a quote from Mike Diamond - their prices are crazy high! Find a good local plumber that has good reviews on yelp!

Called at midnight for our main drain plug. They put me down for service from 9am-1p. I called at noon and they said that they can't be there before 1 but definitely by 5p. For this they offered $20 off. Then they called around 230p saying that they cannot come at all until the next morning, for this they apologized and offered the same $20 off. I was very disappointed with the promise to appear and then reneging twice. looking for other plumbers. they don't even deserve a star as they never came. can't use toilet and make my family wait at the house all day.

Total rip off! Maybe even elder abuse in this situation. My mother's 93 years old wall heater wasn't igniting properly they had to do it manually and got tired of it my sister who is 69 years old and lives with them decided to call Mike diamond. What turned out to be something that could have been a lot cheaper ended up to be $1,800 Plus. And he fixed the ignitor on it. We looked up the wall heater and found that you could buy it brand new is in its entirety for $600. If Mike diamond sees this review I hope he will try to make this right before I take it to the authorities. I am serious about this this is not right and I don't want it to happen to any other people.