Business Details
28 Years
experience
Emergency
services
Your Trusted Phoenix Plumbing Experts
Diefenderfer Plumbing has been a trusted name in the plumbing industry since 1998, founded by Master Plumber Ralph Diefenderfer. With over 60 years of combined experience among our team, we specialize in delivering honest, reliable solutions for residential and commercial plumbing needs. Our expertise spans leak detection, new construction, and remodeling, utilizing non-destructive techniques to minimize disruption. We prioritize customer satisfaction, treating every client like family and offering free quotes with no travel fees. Servicing the Greater Phoenix area, including Scottsdale, Peoria, and Paradise Valley, we remain committed to excellence in every project. Our dedication to quality is reflected in our licensed, bonded, and insured status, ensuring peace of mind for our clients.From routine maintenance to emergency repairs, we approach every job with professionalism and integrity. Our teams deep local knowledge and passion for plumbing ensure systems are installed correctly for long-term performance. With a focus on transparency and personalized service, we aim to build lasting relationships within the community. Over three decades of operation, weve earned a reputation for tackling complex challenges with innovative solutions. Whether addressing a dripping faucet or designing a new plumbing system, our goal is to exceed expectations through expertise and unwavering commitment.
Services
Leak Detection
Service Calls
New Construction
Remodeling
Plumbing Repairs
Water Heater Installation
Sewer Line Repair
Drain Cleaning
Gas Line Services
Solar Water Heating
Details
- Year established: 1998
Highlights and features
- We offer over 60 years of combined new construction experience.
- Our team specializes in non-destructive slab leak detection and repair.
- We provide free quotes with no travel fees.
- We treat every customer like family with personalized service.
- We are licensed, bonded, and insured for your protection.
Services
Leak Detection
Our non-destructive slab leak detection identifies hidden leaks beneath concrete slabs. Using advanced techniques, we reroute plumbing to minimize damage and restore water flow efficiently. Ideal for residential and commercial properties facing unexpected water loss or increased bills.
New Construction
We specialize in installing durable plumbing systems for new buildings, ensuring compliance with modern codes. Our teams 60+ years of combined experience guarantees precision in layout, pipe selection, and system integration for long-term reliability and efficiency.
Sewer Line Repair
From root damage to main line blockages, we offer comprehensive sewer line repair and replacement. Our electronic locating tools pinpoint issues quickly, while trenchless methods reduce landscaping disruption, saving time and costs for homeowners and businesses.
Plumbing Repairs
We address urgent plumbing issues like leaking water heaters, clogged drains, and faulty fixtures. Available for same-day service, our licensed technicians resolve problems swiftly, minimizing property damage and restoring functionality with minimal downtime.
Gas Line Services
Our experts install and repair gas lines for appliances, fireplaces, and outdoor features. We prioritize safety and code compliance, conducting pressure tests and leak checks to ensure secure connections for residential and commercial gas systems.
People
Ralph Diefenderfer
Master Plumber
Ralph Diefenderfer, Master Plumber, has led our company since 1998. With over 35 years in the industry, he ensures top-quality plumbing solutions tailored to each client's needs.
Questions
What services does Diefenderfer Plumbing offer?
We provide leak detection, new construction plumbing, sewer line repair, emergency plumbing repairs, and gas line services for residential and commercial clients in Phoenix.
Do you offer emergency plumbing services?
Yes, we handle urgent issues like burst pipes and leaking water heaters with same-day service availability.
Are your plumbers licensed and insured?
All our technicians are licensed, bonded, and insured to ensure safe, professional service with liability coverage.
What areas do you service?
We serve Phoenix, Scottsdale, Peoria, Paradise Valley, and surrounding areas in Arizona.
How much do your services cost?
Hourly rates start at $130 for plumbers and $50–$70 for apprentices. We offer free quotes with no travel fees.
Can you repair slab leaks without breaking concrete?
Yes, we use non-destructive rerouting techniques to fix slab leaks while minimizing damage to floors and foundations.
Reviews (4)
Dolores Curtis
Nov 30, 2019
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My house is 28 years old and Diefenderfer Plumbing has been doing superior work for me for over 20 years. Ralph and his crew have installed 2 hot water heaters, an RO system, and a water softener. They have replaced faucets, fixed leaks, etc. Pricing is fair. All work has been done in a professional and courteous manner. I also like the fact that Ralph takes pride in his work and stands behind it. I would not hesitate to recommend this plumbing company.
Karleen Cyr
Sep 15, 2019
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I wanted a RO system on my kitchen and a hook up to the refrigerator. Diefenderfer plumbing was referred to me by a friend that had been using their services for over 4 years. Ralph came in and explained how the system worked. I told him that I did not want my water to be acidic. No problem. Ralph went to his supply house and brought back a water softener that had an alkalinity increasing filter and installed it under the sink. Once the installation was completed, Ralph ran water through the piping for a while to make sure that there were no leaks. This was an amazing experience and they will be
Michael Staub
Jun 04, 2019
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Mr Diefenderfer flooded our house after failing to inspect a drip line that he installed from our sink to the fridge. This was the our first order of business before we moved into our new house. So after he installed it we left and didn't discover till we revisited the house. Unfortunately by then the kitchen and adjacent media room had an inch and a half of water in them. As a result of his negligence our walls and lower cabinets were ruined and had to be removed and replaced. After notifying Mr Diefenderfer he got belligerent and started yelling at us on the phone. We are pursuing this case
Carla B.
Oct 15, 2018
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We have used Ralph for over 10 years and he is very honest, knowledgable and trustworthy. He can handle all your plumbing issues and he won't try to upsell you on anything else, frankly he is so honest if it's an easy fix he may even try to talk you through fixing it yourself because he is just a good guy like that. His prices are reasonable and he does a fantastic job. I highly recommend Ralph and wouldn't use anyone else.
