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302-994-5786
By Lester H. on 06/02/19
Have used this company for all my heating and a/c needs for over a decade. Excellent service and personnel

By Barbara N. on 05/29/19
Excellent service, courteous staff both in office and field, timely, high quality work.

By Kenneth J. on 05/23/19
Sean was on time, professional and friendly. He diagnosed the problem quickly and was able to correct the situation right away.

By Connie W. on 05/08/19
Aaron was efficient and gave helpful feedback. Thanks!

By Dale K. on 05/07/19
Second visit from JF & Sons to service our HVAC system. We liked them so much we signed a yearly contract to save further. Sean E. was a great tech and answered all our questions. He went above and beyond to satisfy our requirements and take care of our expensive e...
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Second visit from JF & Sons to service our HVAC system. We liked them so much we signed a yearly contract to save further. Sean E. was a great tech and answered all our questions. He went above and beyond to satisfy our requirements and take care of our expensive equipment. We look forward to having such prompt and courteous visits for maintenance or repair in the future.
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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...
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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...
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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 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 Wales, L. on 05/02/19
Steve and Kaleb did a superb job fixing problems in our electrical system including grounding our gas pipe. They were always courteous and explained everything.

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 Albert S. on 05/01/19
Excellent service. He was on time and very neat. He took the time to explain everything and to answer all of my questions. I have a 18 year old unit and he tries to keep the unit running rather than hard sell me on a new system.

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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CALL TO SCHEDULE
302-994-5786

Select any employee to see all their reviews.

Aaron
6 Years
Rating:
19 total reviews!
Ken W
Rating:
14 total reviews!
Terri H
Customer Service Rep.
9 Years
Rating:
(1 total review)
Bud
Customer Service Rep.
27 Years
Rating:
(1 total review)
Steve O
Rating:
(13 total reviews)
Kevin
8 Years
Rating:
(13 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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