Diligent Professional Services

5.0 (2 reviews)

Plumbing, Heating & Air Conditioning/HVAC, Water Heater Installation/Repair

Open • 7:30 am - 5:30 pm

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Telia K.

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1

0

1 year ago

Great guy very professional and Knowledgeable about his work. And takes the time out to help with the situation.

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Lauryn E.

0

1

0

1 year ago

Johnnie has been taking care of our A/C for a while now and we couldn't be more pleased with his service. He's reliable, knowledgeable, and always ensures everything is running smoothly. We truly appreciate his dedication and professionalism. read more

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More info about Diligent Professional Services

Florissant, MO 63033
Directions
(269) 744-4479
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Does Diligent Professional Services take credit cards?

No, Diligent Professional Services does not take credit cards.

From the Business

History

Established in 2015.

With over 20 years of experience in the Property Management Industry, Mr Pratt Launched JDP Services LLC. Years later, the name was changed to its current name Diligent Professional Services LLC.

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Hours

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Needed an outdoor spigot fixed along with shut off valve. Ty was professional and completed the…read morework quickly and cleanly! Will call them again when I need more projects completed !

Ty was lovely and fixed our stuck drain very well. He was kind and respectful, jelly to explain…read moreeverything, what my options were and what my options weren't. Did a thorough job. I will be happy to call them back!

Evolve Construction and Electric

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Tino was a lifesaver I had a leaky pipe in my attic that was ruining my drywall and he came by…read moreimmediately fixed the issue and was very reasonably priced. I plan on using him again.

From the owner: 20+ years maintaining industrial, commercial, and residential buildings. There is nothing I haven’t…read morehad my hands on repairing or new install in electrical, hvac, plumbing, carpentry, painting, and low voltage data equipment.

Mick's Plumbing

(3 reviews)

Not able to use them. A message on their number announced unless you have a specific problem…read more(something that sounded high dollar) they are not available to help. I guess I had to give more than one star because at least they didn't waste my time.

I recently had Mick's Plumbing do some work to remove an unneeded laundry fixture. Mick Jr. and LT…read morecame out, did a very professional job, cleaned up after their work and were very reasonable in their charge. I would highly recommend them. They came within the stated timeframe and I expect to use them for additional work.

B & B Heating, Cooling, Plumbing & Electrical

(13 reviews)

They are no longer in Florissant. Their shop is in St. Charles. Extreme parts markup. They charged…read moreme $225 for an outside temperature sensor.

These guys were amazing. During one of our biggest heat waves they were able to get my air…read moreconditioner up and running fast. And I thought that their price was more than fair. I would definitely use them again. They explained everything very clearly and gave a professional estimate that they were able to stay within. I would definitely refer them to others!

Precision STL

(10 reviews)

Great Service! A friend recommended Sylvester to replace some faucets in my house. Great price and…read morequick service. I've called him for other jobs and have had the same great service consistently!

I am blown away by Precision Plumbing. Great attention to detail, clean and organized, fairly…read morepriced, and quickly completed. Mr. Sylvester is kind, communicative, and truly a master plumber. Would recommend to anyone!

Absolute Pro Plumbing Services

(1 review)

Absolute Pro Plumbing Services is a family owned small business. They offer great customer service!read more

From the owner: At Absolute Pro Plumbing Services, we focus on Residential and Commercial Repair Plumbing. Absolute…read morePro Plumbing Services is your Commercial and Residential, Repair and Rehab expert. Allow us to become your Exclusive Plumber!

S&L Plumbing

(1 review)

S&L Plumbing will have me as a client for life. They were very reasonable, extremely professional,…read moreon time, and the work was top-notch. Their install of a new hot water heater will save me on my utility bill for years to come. Thank you for your awesome service.

From the owner: Our family takes immense pride in providing dedicated service with a personal touch. With years of…read moreexpertise, our licensed team ensures that every task is handled with professional precision. You can have total peace of mind knowing that we are fully bonded and insured for your protection. We remain committed to delivering exceptional value through our highly competitive pricing models. It would be an honor to assist you with your needs and demonstrate our unwavering commitment to quality.

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Hundreds of millions of reviews are posted on Yelp, and our automated recommendation software works in the background to showcase the reviews that it …

6 reviews that are not currently recommended

The reviews below are not factored into the business's overall star rating.

Shantell J.

0

1

1 year ago

I recently had an a/c repair done by Johnnie Pratt and I absolutely had to come rave about my experience. Johnnie worked efficiently and with sense of purpose and in the scorching heat of the day! He was professional and communicative. Way to go Johnnie! read more

Patrice H.

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1

0

1 year ago

The plumber was excellent and knew what he was doing and very reliable. his work was clean and had wonderful customer service.

Marilyn B.

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1

0

1 year ago

Johnnie is a great tech, outgoing, and reliable. He installed my a/c system in a timely matter and was very professional

Jeanette B.

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1

0

17 days ago

The technician provided great service and was very professional. I would definitely recommend this company

Tarron S.

0

1

0

2 months ago

great service, had a problem with our toilet and Johnnie came out completed the job on a timely manner

Maurice H.

0

1

0

16 days ago

Had a leak in my basement and Mr Pratt was able to locate the leak and fix it in a timely manner

Diligent Professional Services - plumbing - Updated October 2026

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I highly recommend this company. The owner went above and beyond to help us with a problem we…read morethought was related to plumbing. It turned out to be totally unrelated but he helped us anyway. This is a great company with an owner who really cares. I would like to give him ten stars!

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I will use them again, as needed. They also fixed a problem that was no found and the price was…read morenot changed

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I called around and finally got in touch with the owner. My job was pretty easy; snake a drain and…read more13-14 new valves (all welded). He gave me a bid over the phone that was easily half the price of some competitors. Luke came out and started around 0800. He was more than happy to answer my questions and talk me through some of the things that he saw. He finished in the time they said they would and did a great job. We will definitely be calling them for any future plumbing jobs we get.

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Diligent Professional Services - plumbing - Updated October 2026

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Diligent Professional Services

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Recommended Reviews - Diligent Professional Services

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6 Diligent Professional Services reviews that are not currently recommended

Why does Yelp recommend reviews?

6 reviews that are not currently recommended

Diligent Professional Services - plumbing - Updated October 2026

Browse Nearby

People found Diligent Professional Services by searching for…

Related Searches in Florissant, MO

Trending Searches in Florissant, MO

Related Cost Guides

Service Offerings Nearby

Browse Brands

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People who viewed Diligent Professional Services also viewed

Neal's Plumbing

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