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Joseph Frederick & Sons As a family owned and operated business since 1947, we have held strong in our goal to provide the very best home comfort service throughout Delaware, Pennsylvania, and Maryland. Due to our unwavering commitment to quality, we've been able to ensure our ongoing success and continue to expand in order to better meet the needs of our customers. We employ a dedicated team of professionals with a wide range of expertise, so we can be your single resource for HVAC, plumbing, electrical, and remodeling services.
Services
Back in 1947, Joseph Frederick started a small plumbing business on his front porch in Brack-Ex, on the edge of Elsmere. In April of 2014, brothers Brian and Robbie Frederick celebrated the 68th anniversary of Joseph Frederick & Sons, which has grown and expanded from a "one-man, one-truck" business into a multimillion-dollar organization, providing residents of the Delaware Valley with plumbing, heating, cooling, and electrical services.
Joseph Frederick and Sons installed our new HVAC system. It didn't work as expected, but they were committed to making us happy! They certainly went above and beyond to make sure the new equipment was working properly and that everything in our old house was done correctly (which of course it wasn't!).
A dripping faucet can waste gallons of water and hundreds of dollars. A constantly running toilet can keep you awake at night. Even minor plumbing leaks can cause extensive property damage. When you experience any difficulties with your plumbing, from drain and sewer, to water heaters and failing toilets, trust the experts from Joseph Frederick & Sons.
The licensed electricians from Joseph Frederick & Sons are your qualified source for electrical services. With safety as a priority, we handle new installation, remodeling projects, upgrades, wiring, maintenance, repair solutions, generators, and more. All jobs are completed quickly and with careful regard to your home and property.
Reviews (28)
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Tony Johnson
May 06, 2022
These folks are unbelievable! They installed a new gas furnace for me a few years ago. There were some performance issues because of the existing duct work in my home. After repeated adjustments to try to get it to work, they upgraded me to a more expensive model that would work for me at NO EXTRA COST! Who does that right! Can't say enough good things about this company top to bottom.
Pee Body
Apr 20, 2022
Tim was professional and personable. He did excellent work and provided appropriate information and education about his services. Service: Water heater repair
Joel Kupis
Apr 09, 2022
Tim R. Did a fantastic job fixing my plumbing issue. It was an all day job that required breaking into my concrete slab. Super professional and did quality work. Bravo! Services: Heating system repair, Plumbing pipe repair
Steve Gouge
Feb 17, 2022
Tim R installed our hot water heater in 2017. Since then Tim has responded to our house several times to tune up and repair/maintain our aging HVAC systems. Tim is very punctual, friendly and courteous. Tim seems to be an expert in the installation/repair of hot water heaters. He will also try to help you save money in the future by offering tips to help in maintaining your existing equipment. I have relied on JOS. Fredericks & sons for all my HVAC needs for over 20 years and would recommend them and Tim R for all of your HVAC needs.
Ian Lebbern
Feb 16, 2022
I have used Joseph Frederick & Sons over the last 1-2 years for various services, including plumbing repairs, electrical and heating/hvac maintenance. The whole team have been amazing and have done wonderful work. On the plumbing side Dennis has been superb - always invested in doing the best job he can. Definitely won't go anywhere else for future work.
Carissa M.
Feb 09, 2022
Great experience! Dave C and his team were extremely knowledgeable, efficient, thorough and friendly. Frederick and Sons got us the parts extremely quickly for our broken HVAC when there were no parts to be had and then fit us in for the repair with that same sense of urgency. Thank you Dave C! Services: Heating system repair, Repair HVAC
James Martin
Feb 03, 2022
We've used Joseph Frederick for several projects in the past 15 months, including installing a sump pump and battery backup system, replacing our air conditioning and heating units, HVAC maintenance, and replacing a garbage disposal. All of their technicians were professional, hardworking, personable, and efficient; and we were pleased with the quality of their work and attention to detail.

In addition, their office personnel are friendly and responsive and make scheduling easy. We'll definitely continue to use Joseph Frederick for all of our plumbing and HVAC needs.
Brandon Weiner
Jan 01, 2022
I've used Joseph Frederick & Sons a few times now for repairs to my AC and heating units. They are always available even on the busiest of days or weekends to help with repairs and maintenance. I recently had an issue with my heater and Dan was able to diagnose the issue over the phone and come to my house on a Saturday to quickly replace the part on my furnace. They are reliable and professional always and I highly recommend.
Swamp Sak
Aug 20, 2021
They are the best company they've been open since 1947 fair and balanced and I will not use anybody but them for all of my home services
Erin Watson
Jul 27, 2021
We have been using Joseph Frederick and sons for 15 years and they NEVER disappoint. Our AC went out yesterday and they fixed it promptly today without issue! The office staff answering the phones are knowledgeable and friendly. Kevin (who typically does our service) is the absolute BEST! He will stay late at work to be able to squeeze us in. The epitome of professional! Thanks :-)
Mike Robinson
Jun 27, 2021
Sean took care of us and got us up and running in an unfortunate bad timing breakdown and we thank him and the Joseph Frederick and sons HVAC manager. Awesome Services: HVAC repair, HVAC maintenance, AC maintenance
Sandy Cunningham
Jun 04, 2021
Sean was so polite. He made me feel comfortable with what was going on. Real nice guy. Figured out the problem in 2 minutes and fixed our problem within 20 minutes. Service: AC repair
Julie Doherty
May 28, 2021
Always a pleasure with Joseph Frederick & Sons! Sean was prompt, patient, efficient, informative and most importantly friendly with our pup! Service: AC maintenance
Isabella W.
Apr 25, 2021
Joseph Frederick and Sons does what it takes to get the job done. Our tech came out 3 times when our issue didn't resolve after the first visit, and we were only charged for the service fee for the first visit.
Stephen & Katie McKinley
Mar 22, 2021
Joseph Frederick and Sons installed our new HVAC system. It didn't work as expected, but they were committed to making us happy! They certainly went above and beyond to make sure the new equipment was working properly and that everything in our old house was done correctly (which of course it wasn't!). Their dedication and professionalism was wonderful. In addition, their service techs are wonderful. They know what they're doing, and are very friendly and willing to answer questions.
Rebecca Rush
Mar 03, 2021
We are always happy with Joseph Frederick and Sons service. Their electricians so quality work and are so thorough and professional. They are our go to for honest, and hard working professionals!
Noah Lucas
Mar 01, 2021
All around excellent service. Called about broken furnace, had a tech out same day. Quickly diagnosed problem and had us up in running quickly. Our tech, David, was super helpful throughout the process and we couldn't be happier to have heat again!
John Zucaro
Aug 18, 2020
I had an issue on a Sunday with the heating system not working. This was during the winter, they came within a few hours and had it up and running in no time. Sean was outstanding to work with.
Mike Robinson
Jul 01, 2020
I got two split systems AC installed for my upstairs and it solved a long problem, it is so comfortable now. I no longer have to put window AC units in my windows anymore. The system jos. Frederick put in are very quiet.you barely hear it. The guys who put it in were Roger and Rudy and they were very friendly clean and respectful. Showed up on. time and finished the job when they said they would.

It was hot as hell so hats off to those guys working in the attic to get it done. My dad (in heaven) always used Joseph Frederick and sons and he would be happy Use there services also. If your thinking about fixing your upstairs or hotspot in your house please give Joseph Frederick and sons a call and have Dave the sales guy come out and talk to you.you won't regret putting in one of these split systems.
Brittnay Rothwell
Jun 19, 2020
They were super amazing! They were very thorough and very professional. Would highly recommend! They were great to my family and pets. Felt safe having them in my home.
Michele L. Millar-Savage
Dec 04, 2019
Lived without heat for most of the weekend and paid for an emergency visit on Sunday. Had to order a new ignition. Spent $100 extra to get it here by today, Tuesday. Had the new part installed at 3:30 pm. Worked until about 8:30 and now it's broke again. Pretty sure $1100 plus emergency visit cost is not a deal for 5 hours worth of heat. And now we get to sleep without heat for yet another night!
Bill Funk
Aug 02, 2019
Professional employees and excellent work done. Linda and bill Funk recommend highly!
Lun H. Lam
Jul 23, 2019
My 15-year-old AC began to fail just before the beginning of a predicted long and severe heat wave. After doing some quick but extensive research into repair vs. replace, and into the various makes, models, and installers, I decided ultimately to purchase a new Carrier AC from Jos. Frederick & Sons. My decision was based in large part on my having. had the pleasure to work with Mr. Bud Thompson, who I found to be very professional, knowledgeable, and forthright.

I felt that he was truly advising me rather than just trying to sell to me. The AC was installed in just a couple of days and it has performed flawlessly since. Thank you Bud, for all your advice and help, and thank you Jeff and Rudy for doing such a great job on the installation!
Lynn Williams
Jul 11, 2019
I have had plumbing issues, and a complete breakdown of my air conditioner over the last two weeks. I have worked with two plumbers, a sales person, and two air conditioner repair men from your company and they were all very pleasant, and professional.and did great work! thank you!
Mike Fusca
May 21, 2019
Had Ken W (HVAC PM Tech) come to my home this morning- Spring AC tune-up. He also serviced my home in the Fall for Winter Heat tune-up. What a pleasure it was to have someone so knowledgeable, experienced and confident to take care of business. He was the most thorough associate that has ever been to my home. He checked and cleaned the equipment as. if it was his own home. Answered questions, and recommended helpful hints to keep my equipment running well into the future. Ken, I certainly appreciate your attention to detail. Joseph Frederick & Sons "HomeRun". Thank You
Terry Balascio
Mar 08, 2019
I have had service calls and my HVAC system replaced by Joseph Fredrick and sons. I am so happy with the work, and the service technicians are wonderful. I thought I needed a new hot water heater, and when the service tech looked at it, he was honest and told me it was fine. That means so much when you can trust the company to be honest.
Terri Murvin
Dec 07, 2018
Ken W came to my home today for HVAC maintenance. He promptly found an issue with my unit; explained it to me; and assured me that it will be taken care of in a timely manner. Ken is very polite and very informative. Thank you, Ken
Zach Rempfer
Feb 16, 2018
Great service and Bobby is the best. Also know you are getting the real story with Frederick & Sons and not just trying to sell you a product/service you don't need. Looking forward to having them install our new system also when we need it.