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302-994-5786
By Terri P. on 05/04/19
claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All y...
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claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All your men have been excellent so I guess my evaluation would be the same anyway. Hope this will not reflect on any future technicians.
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By Terri P. on 05/04/19
claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All y...
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claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All your men have been excellent so I guess my evaluation would be the same anyway. Hope this will not reflect on any future technicians.
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By Terri P. on 05/04/19
claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All y...
(View More)
claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All your men have been excellent so I guess my evaluation would be the same anyway. Hope this will not reflect on any future technicians.
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By Terri P. on 05/04/19
claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All y...
(View More)
claimed words did not match. Had Kevin and he was a very fine technician. Polite, helpful. Good representation for your company. I will not be using this site again as I did not like the way I had to go in circles. Will most likely just call or do nothing. All your men have been excellent so I guess my evaluation would be the same anyway. Hope this will not reflect on any future technicians.
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By Luke W. on 05/03/19
Steve O’Neil and Kaleb were superb. They were courteous, and Steve was highly capable and helpful at all stages of the project. We couldn’t have been more satisfied with his work. Thank you for an excellent job!

By Sarah N. on 05/01/19
After poor experiences with Horizon I took the suggestion of Nextdoor reviews and went with J Frederick and Sons for an Hvac issue. I have now used them for 3 separate repairs/maintenance in my home including Heat, AC and Plumbing. All have been speedy, extremely r...
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After poor experiences with Horizon I took the suggestion of Nextdoor reviews and went with J Frederick and Sons for an Hvac issue. I have now used them for 3 separate repairs/maintenance in my home including Heat, AC and Plumbing. All have been speedy, extremely reasonably priced and accompanied by polite knowledgeable service providers - Sean (HVAC) & Justin (plumbing). I am usually a do-it-yourselfer and hate spending money on repairs (especially when I am getting ripped off) but the service and bang for your buck with these guys is undeniable.
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By Phil V. on 04/25/19
Excellent service from a very conscientious technician. We met Sean E. when we first started using Jos. Frederick and were very pleased when he was the tech today. He does a very thorough job and fully explains all his recommendations.

By Phil V. on 04/25/19
Excellent service from a very conscientious technician. We met Sean E. when we first started using Jos. Frederick and were very pleased when he was the tech today. He does a very thorough job and fully explains all his recommendations.

By Susan S. on 04/23/19
Tim, from Joseph Frederick & Sons, and his partner, Dan, where courteous and great listeners. They quickly got to the root of my problem and solved it within a few minutes. Sadly, there was water damage, but they set my mind at ease by providing a referral to a com...
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Tim, from Joseph Frederick & Sons, and his partner, Dan, where courteous and great listeners. They quickly got to the root of my problem and solved it within a few minutes. Sadly, there was water damage, but they set my mind at ease by providing a referral to a company that will mitigate the damages while working with my insurance company. Dan took it upon himself to make the referral and I had the next step to solving my longer term issues scheduled before he left. PS They remembered to put on their booties - which is helpful given the dirt and pollen outside at this time of year.
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By Nancy S. on 04/13/19
No need to improve your service with Ken W doing the work. He was very professional, kind, and did excellent work. He went above and beyond what he was expected to do.

By Jennifer F. on 04/11/19
No comments

By Blake B. on 04/05/19
Steve, the electrician at Joseph Frederick & Sons, analyzed our project needs, estimated and installed 4 new electrical circuits in our basement. Steve is very knowledgeable and provided detailed answers to all my questions, His work is very professional, very neat...
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Steve, the electrician at Joseph Frederick & Sons, analyzed our project needs, estimated and installed 4 new electrical circuits in our basement. Steve is very knowledgeable and provided detailed answers to all my questions, His work is very professional, very neat and carefully checked. It was a pleasure to have Steve for this project.
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By Rasheeka C. on 03/29/19
I called Jos. Fredrick & Sons for an emergency electrical problem on a Friday evening. Steven O. returned the "on call" message and was polite when I spoke to him on the phone. He was upfront with pricing and made sure I was clear about how the emergency service ca...
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I called Jos. Fredrick & Sons for an emergency electrical problem on a Friday evening. Steven O. returned the "on call" message and was polite when I spoke to him on the phone. He was upfront with pricing and made sure I was clear about how the emergency service call would work. He arrived within 30 - 40 minutes from the time I spoke to him on the phone. He was able to find and fix the issue without it going to a "next level" service call where he would have had to run test to find the issue, which would have cost more money. Steven was professional, polite, keep me informed and fixed my problem! Thanks Steven for a job well done!
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By Joerg B. on 03/29/19
The electrician (Steve O) performed excellent job installing two new outlets keeping me informed along the way.

By Daria R. on 03/25/19
Sean is the best technician that has serviced my heater and air conditioner systems. Very thorough, explains everything and goes above and beyond. I will certainly request him for my future needs. Outstanding.

By Carmela C. on 03/18/19
We needed work done on our attic fan that decided to grind to a halt. Steve O. came out and took care of our repair. He was knowledgeable, courteous and very neat. We would highly recommend Steve O. from Joseph Frederick & Sons to take care of any of your electrica...
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We needed work done on our attic fan that decided to grind to a halt. Steve O. came out and took care of our repair. He was knowledgeable, courteous and very neat. We would highly recommend Steve O. from Joseph Frederick & Sons to take care of any of your electrical needs. It was a real pleasure to have someone that was not only efficient but pleasant to deal with.
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By Angela B. on 03/13/19
Ken W. from Joseph Frederick and Sons came to my house today to service my heater. He was very knowledgeable and explained amongst other things, exactly what kind of filter I need and why. He also was most professional and polite. I trust J.F. and Sons, which ...
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Ken W. from Joseph Frederick and Sons came to my house today to service my heater. He was very knowledgeable and explained amongst other things, exactly what kind of filter I need and why. He also was most professional and polite. I trust J.F. and Sons, which allows me peace of mind, which is priceless.
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By Terry B. on 03/08/19
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...
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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.
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By Sharon M. on 03/06/19
This was the second time I had Tim as my plumber for my home. He was respectful, thorough, explained everything thing and showed me what he would do and reviewed the pricing before he started. He had another technician with him that seemed as though he was in train...
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This was the second time I had Tim as my plumber for my home. He was respectful, thorough, explained everything thing and showed me what he would do and reviewed the pricing before he started. He had another technician with him that seemed as though he was in training. He was patient and shared his knowledge easily. It was a pleasure to have both employees from Jos Frederick do my repairs.
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By Michelle M. on 03/05/19
Ken did our annual service yesterday and addressed several problems. He was able to return today and fix everything. He was thorough in explaining the nature of the issues and very pleasant. I'm grateful for the excellent and prompt service.
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CALL TO SCHEDULE
302-994-5786

Select any employee to see all their reviews.

Aaron
6 Years
Rating:
18 total reviews!
Kevin
8 Years
Rating:
13 total reviews!
Terri H
Customer Service Rep.
9 Years
Rating:
(1 total review)
John R
Customer Service Rep.
Rating:
(1 total review)
Steve O
Rating:
(12 total reviews)
Ken W
Rating:
(12 total reviews)

* Total number of reviews and star-ratings are based on data collected during the time period Joseph Frederick and Sons has been using the ReviewBuzz system and may not directly match the data found on each public review site.

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Customer service is always a top priority at Joseph Frederick and Sons. Our BBB Membership A+ rating is like a badge of honor as we continuously strive to provide the best experience for our clients.

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Aaron has a 5-Star rating and leads the company in total reviews, making this pro a ReviewBuzz Rockstar!
18 total reviews
Aaron enjoys spending time with his family, camping, blacksmith as a hobby as well as fishing and farming.
By Gary C. on 12/04/18
Aaron was friendly, knowledgeable and willing to explain what he was doing clearly and concisely.

By Wayne L. on 10/09/18
Aaron did the annual maintenance on the heater and found faulty burner units. He was very professional in explaining the issue and the corrective plan. He returned with the parts and fixed the CO problem.

By Madeleine B. on 09/27/18
Aaron could not have been more customer oriented. He made it easy on me and was prompt and respectful. Thank you!

By Oak P. on 05/27/18
Aaron Celli is awesome!! He's helpful and professional. Very thankful for his expertise and courtesy. Thanks, Aaron!

By David T. on 05/04/18
In a hot house Aaron shows up and make it all go away. Personable, Kind, informative and results driven. Aaron really does what it takes to make it, teach it and help. Thank you Aaron. We will all sleep a lot better tonight.

By Dan E. on 04/30/18
Every tech I've had has been top notch. Their prices have beat out every other company I quoted, including the company that installed the new unit that I was having the problems with. Their service, price, and knowledge can't be beat.

By CHARLES F. on 02/28/18
Good service

By Marlies F. on 01/27/18
Many years ago Frederick & Sons installed our top of the line heaters, air conditioners and humidifiers in our home and we have been very satisfied with their customer service ever since. The technicians are courteous, knowledgeable, prompt and most respectful not ...
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Many years ago Frederick & Sons installed our top of the line heaters, air conditioners and humidifiers in our home and we have been very satisfied with their customer service ever since. The technicians are courteous, knowledgeable, prompt and most respectful not only of the client but the client's home. No matter what problem might arise with any of our systems, one call gets you an immediate and friendly response and quick service/repair. We recommend this business highly.
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By RICHARD O. on 01/26/18
(no comment)

By SUSAN O. on 01/09/18
Aaron came to service our heater for it's annual maintenance. He said there were no issues, so everything was taken care of quickly. Aaron was on time, neat, and very pleasant to talk to.

By Sara F. on 12/30/17
My sister had recommended this company as they had replaced her house heater. I had them repair a break in a water line in the floor awhile back so when I woke up on Christmas Eve morning and had no heat, they were first in my mind. As it turns out, the were able t...
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My sister had recommended this company as they had replaced her house heater. I had them repair a break in a water line in the floor awhile back so when I woke up on Christmas Eve morning and had no heat, they were first in my mind. As it turns out, the were able to restore my heat and since the heater is now 43 years old, it's over due to be replaced. That's their next project for me. Don't hesitate to give them a call when you need service.
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By STAN M. on 12/07/17
(no comment)

By Norann W. on 12/06/17
Aaron was very knowledgeable and pleasant. Came to the house on time and insisted on wearing protective shoe coverings. Arranged to have someone come to the house in a matter of minutes to discuss a new heater.

By Georgina M. on 11/13/17
On time! Friendly and knowledgeable. Highly recommend this technician.

By Keith & Shirley C. on 10/24/17
I have had a great experience with Joseph Frederick & Sons. Aaron has consistently done a great job in repairing and maintaining our HVAC system. He is very knowledgeable and goes out of his way to give the best service possible!

By Kevin W. on 10/12/17
Excellent technician - smart and professional.

By Erik G. on 10/10/17
The technician arrived on time and was very friendly, clean and knowledgeable. Thank you!

By Eugine T. on 10/01/17
The heating/ air conditioning representative did an excellent job servicing my system. He explained to me the status of my system in simple terms. He arrived in the time period expected and I was notified by phone of his pending arrival by J.Fredericks & Sons.
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