Areas We Serve

If you’re looking for technicians capable of handling all your home’s central systems, you’ve come to the right place. Our Diamond Bar HVAC company also provides plumbing and electrical work. At All Pro Plumbing, Heating, Air & Electrical, you can get quality repairs, maintenance, and installations for your home, all in one place. After 30 years in business, we know how to identify nearly any appliance issue you can think of and provide fast service to get your equipment up and running again sooner rather than later. At All Pro Plumbing, Heating, Air & Electrical, We are the complete home service package.

To reach our Diamond Bar plumbing and electrical pros, or contact an experienced technician for heating and AC repair in Diamond Bar, dial (909) 500-8193.

Comprehensive Services to Improve Your Plumbing System

Let’s face it, most people don’t like to think about plumbing problems. Yet if you want to avoid burst pipes, overflowing toilets, and other nasty messes, it’s important to hire a Diamond Bar plumber to inspect your system every once in a while. Luckily, All Pro Plumbing, Heating, Air & Electrical provides maintenance services that keep your pipes clean and your drains flowing. And with repairs and installations for everything from your garbage disposal to your shower, you can always trust us to improve your plumbing system.

Our Diamond Bar plumbing services include:

  • Bathroom & kitchen plumbing
  • Drain cleaning
  • Emergency 24/7 plumbing services
  • Gas line services
  • Water heater services
  • Water treatment systems

Plus, our experts also serve the nearby communities, including Claremont, Pomona, Upland, and Chino.

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  • Special Offer


    AC Tune Up Special


    Cannot be combined with other offers.
    Valid from April 1, 2024 – June 30, 2024.

  • Special Offer

    $1000 OFF


    includes a 1 year service agreement,
    and an air filtration system (air scrubber)

    *Valid only March 14-31, 2024.
    Must present offer to technician at appointment.



Cannot be combined with other offers. Valid from April 1, 2024 – June 30, 2024.

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All Pro Smart Membership

Experience Peace of Mind, Discounts, & More Even the best HVAC, plumbing and electrical systems need recurring maintenance to keep them running perfectly. With the All Pro Smart Membership, you can rest assured that your home’s HVAC, plumbing and electrical systems won’t fail – especially when you need them the most!

  • Enjoy all member benefits for only $19.99/month!
  • Four Tune Ups Per Year. Value: $556.
  • No Breakdown Guarantee
  • 100% Money Back Guarantee
  • No Dispatch Fees. Value: $139
  • 15% Off Service Repairs
  • Priority Service. Value: $139
  • Credit Towards Investment. Value: Up to $500
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Since 1991

Top-Rated Plumbing, HVAC & Electrical Services

We remain steadfast in our commitment to providing outstanding customer service and tailoring our solutions to meet our customer’s unique circumstances. We take the time to understand your specific needs, as well as your budget, working closely with you to ensure that your problem is resolved efficiently and effectively the first time.

It’s because of our care for our customers that we have earned the 2020 Best of HomeAdvisor award and been awarded by as one of the best plumbers in the area.

Personalized Options

  • Community Service

  • Fast Response Time

  • Problem Solved the First Time

  • Personalized Option

  • FREE Estimates*

  • Our Core Values

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Thousands of Happy Customers

Was very happy with the quick response to my call for help. It was a very good experience even though it was a stressful situation. They worked with me and were empathetic to my problem and my limitations. They were very thorough in explaining the situation and what needed to be done, explaining and showing me the problem. Once it was decided what I had to do they were quick to get to work and completed the job in a very timely manner. All in all it was a stressful but good experience

– Susan C.

All Pro was awesome we called and they came the same day when our shower drain was leaking into our downstairs ceiling…..the service person was so nice and was very fast and very professional. The price was very reasonable and affordable. They did an outstanding job and we would recommend this company for all your servicing needs. This is the second time using this company, the first was for our water heater and they replaced it fast and very affordable the same day. They came at around 5 and was here until around 9 fixing not only our leaking shower drain but our water pressure value needed to be replaced. They did both and I do not think we would have gotten a better deal or a nicer person to come and do the repairs. All Pro is definitely the people we will be calling for all our plumbing, heating and air conditioning needs from now on.

– Pamela M.

They came to our rescue on January 8, 2018. we had a clogged toilet that overflowed all the way to the downstairs bathroom it was a horrific scene that day. That is when we decided to call All Pro Plumbing. Talked to a nice lady on the phone gave her our info and told us would call back to ensure us someone would come out to help. Within minutes gave us a response time and told us someone will be there within the hour. Sure enough that is when they showed up and quickly diagnosed the problem, went to work, and unclogged whatever was in there that needed to be unclogged. They were efficient, respectful, and professional. They also checkout out other things to make sure that toilet was working fine before they left. Great customer service!

– Vincent M.

Gary was absolutely amazing today. He was friendly, knowledgeable! It seemed a little pricey but our problem needed to be addressed immediately. Great customer service. I would definitely recommend!

– Danielle O.

I would recommend ALL PRO Plumbing to anyone that is looking for good professional service. They installed a sink and garbage disposal for me and did a great job. Their response time is quick. Always either the same day, or the next day

– Chris H.

Tackling Clogged Drains at Their Source

Knowing what not to put down your drains is a very important part of preventing clogs, but a lot of times drain issues are out of our direct control. Problems deep within your sewer lines may be responsible for frequent clogged drains, and they can only be identified through a professional sewer camera inspection. Often, drainage issues are the result of damaged sections of piping caused by things like shifting soil, earthquakes, or even tree roots that break through and begin growing inside of the piping. In scenarios like these, liquid drain cleaner is not going to help you.

If you are experiencing drainage issues, call All Pro today to schedule an inspection. We can pinpoint the exact cause of the problem and come up with the right solution for your needs, which may include drain snaking, hydro jetting, or sewer line repair. Trenchless options are available for replacing broken pipes without digging up your yard!

Heating & Air Services to Keep You Comfortable All Year-Round

As anyone who has ever come home on a hot summer’s day to a broken AC unit or woken up on a cold winter’s night to find their heater isn’t working knows, HVAC issues can be extremely frustrating. On the other hand, there’s nothing like quality heating and cooling relief when you need it most. That’s why our Diamond Bar HVAC experts at All Pro provide fast response times and carry all the latest tools and technology to make your system more energy-efficient.

We offer air quality, heating, and air conditioning services in Diamond Bar including:

Signs You Need AC Repair

1. Sounds that are off – All AC units make some noise, but if yours is making more noise than normal or you hear anything loud and abrupt then call in our AC repair team to get your unit back to its usual self.

2. Insufficient cooling – First check that your air filter isn’t too dirty as it can block necessary airflow. If that’s not the culprit give us a call to inspect your evaporator coil and other elements of your AC.

3. Water Leaks – Water can leak from your condensate line or your drain pan. If there’s ice accumulation then it could lead to water melting which usually just means you need a new air filter.

4. Foul smells – As cooling air requires a bit of condensation, there’s sometimes mold or mildew growth as a result. If you smell something burning, call in our Diamond Bar AC repair experts to inspect your AC.

5. Rising utility bills – If your AC isn’t at 100% then it might be needing more electricity than necessary. Call in our air conditioning experts to get it back in working order to get your electrical bill back on the lower end.

Safe Electrical Work from Experienced Pros

While there may be some home improvement jobs you can pull off on your own, electrical work is not one of them. Safe, efficient, and effective electrical service requires an experienced professional that knows how to complete work up to code and within regulations. Luckily, our Diamond Bar electricians have the skills and experience to keep your property’s lights on and your power running at all times.

Contact our Diamond Bar electrical pros today for:

Call Now to Schedule Quality Service for Your Home or Business

In addition to offering a full range of services for your home, All Pro Plumbing, Heating, Air & Electrical is proud to cater to Diamond Bar businesses, too. Call today for commercial service, and get the same expertise for your office’s HVAC or plumbing system that you would get for your home. Remember, we are also available 24/7, so the next time your home or business has a service emergency, remember that you can always call All Pro Plumbing, Heating, Air & Electrical!

Dial (909) 500-8193 for HVAC, plumbing, and electrical service in Diamond Bar, CA, or click here to send us a message online.