Testimonials Articles
“In addition to Dennis, there was another young man called in to help. They were both courteous, respectful and very pleasant. They worked very hard to resolve our issue. You should be proud of all your employees. We have used your company several times over the years and we have never been disappointed. Thank you…
Continue Reading“Great work! Diagnosed problem , ordered part, fixed the problem. Happy to have a working heater in anticipation of the cold nights ahead. Thank you!”
Continue Reading“Your technicians are always respectful, thorough and excellent in their service.”
Continue Reading“Impressive service. Same day replacement of hot water heater. Dennis did a great job. I could not be more pleased. Thank you so much.”
Continue Reading“Dennis was very polite, knowledgeable and professional. He was very careful to keep the house clean as possible and cleaned up any mess made. He did a very good job making sure the sewer line was clear and would stay clear. Dennis did an excellent job explaining what he was doing and that the sewer…
Continue Reading“As always Donovan does an exceptional job. Explains changes or any problems. Friendly and informative. We request him all the time. Joseph Frederick s company from office staff to service technicians are wonderful and attentive. Great to deal with people who know and do their jobs so well.”
Continue Reading“The work was done efficiently & for reasonable cost + they looked at our main water line – the valve is old & hard to use. They put another valve in upline so its easy to turn the water to the house off now & its safer.”
Continue Reading“Lucas was professional and thorough. Thank you”
Continue Reading“Don was knowledgeable, professional and friendly and determined the issue with my AC in short order. He also completed a thorough investigation of my furnace in the basement. He found no issues, but also provided me some tips and information that will come in handy in the future. While down in the basement with Don…
Continue Reading“Dennis was pleasant and very skilled. He solved our problem quickly. Thanks to all the great techs that have kept our home running well. Thanks also to Sarah who got us on the schedule quickly.”
Continue Reading“I called this morning about a gas leak at a client's furnace. Gabriel was sent out a short time later & located the 2 small leaks & repaired them in good order. Excellent service & excellent timing. Thank you.”
Continue Reading“Tim and Anthony came into my house to repair three plumbing problems. They were on time and their work was excellent. They were efficient and courteous and go the extra mile. This is the third time they have been here for different plumbing repairs including a new hot water heater. So now I request the…
Continue Reading“Very expensive to tighten a screw.”
Continue Reading“Of course, Aaron did an excellent job!!!”
Continue Reading“Aaron was excellent! He knew exactly what the problem was just by hearing my air conditioner try to work. I now have a maintenance agreement and am very happy being with Frederick & Sons . . . thank you.”
Continue Reading“Donovan was efficient, thorough , professional and rendered first class service!”
Continue Reading“Technician arrived on time, diagnosed the problem as a clogged condensate pipe, and cleaned it out. Problem solved. No trying to sell me anything I didn’t need. Thanks!”
Continue Reading“Gabe courteous, knowledgeable PRO! My Tabby Smooch made a new true friend 😼 Thanks!!!”
Continue Reading“Andrew and Cameron did an excellent job and were very professional. They explained what they had completed. I would highly recommend this company for your electrical needs.”
Continue Reading“They did an excellent job installing new breakers, Andrew and Cameron were very professional and explained everything they completed, I would highly recommend this company for your electrical needs.”
Continue Reading“Tim and Anthony worked very efficiently and were always available to explain our new water softener, laundry sink , new sump pump and back up sump. Really nice guys and a great representative of your company. We are very pleased with their service.”
Continue Reading“Tim and Anthony worked very efficiently and were always available to explain our new water softener, laundry sink , new sump pump and back up sump. Really nice guys and a great representative of your company. We are very pleased with their service.”
Continue Reading“Thanks to Andrew and Cameron for an amazing job installing our new ceiling fans! In the 2 years we've had this house we've had to call a ton of different contractors to get work done, but finding a good electrician in particular has been strangely challenging. We tried a few different companies and always had…
Continue Reading“Dennis was professional and courteous as he always is when we need any repairs to any of our plumbing issues! This time it was a leaking kitchen faucet. He identified the issue and repaired and replaced the problem within an hour. I am always confident and satisfied that with any plumbing issues I have in…
Continue Reading“Wonderful Service”
Continue Reading“This was the yearly checking of my air conditioner system – want to say that the Tech was very through with the job of checking the system and advised me on the work done – I have always been very pleased with all the work done by the employees of Jos. Frederick & Sons in…
Continue Reading“Amazing job by 2 curteous and knowledgable induviduals. Easy to talk to and explained the whole process, including how we were future proofing for a new lamp post.”
Continue Reading“Technician, Lucas Kemp arrived as scheduled. Performed 2024 annual inspection of residence AC unit including thermostat, and filter. Unit systems all in good working order . Reset thermostat for hot weather operation. Technician explained to owner what was done. Technician presented himself well, all questions were answered to my satisfaction. All contact with Jos. Frederick…
Continue Reading“Love this guy! He is a true professional”
Continue Reading“Love this guy”
Continue Reading“Lucas serviced our air conditioner and heater as well. He was on time, professional, friendly, and easy to communicate with. He was most efficient and replaced a dual capacitor on our air conditioner, which he had with him on his truck. After his explanation of membership, we agreed to join, which saved us money on…
Continue Reading“So appreciate the plumber coming to same day of my call. Gabriel was wonderful – polite, friendly, professional and easy to talk with. He fixed our toilet and kitchen faucet expertly and made sure everything was cleaned well before he left. Am very happy!”
Continue Reading“Aaron was extremely professional. He explained everything while providing excellent service.”
Continue Reading“I could not be more impressed with the responsiveness and professionalism of these guys. My basement flooded and even though I wasn’t a current client, they dispatched someone quickly and installed a new heat pump quickly at a reasonable price. Highly recommend!”
Continue Reading“Lucas was courteous, professional, and explained everything in detail. I would let him back into my house anytime. Thank you”
Continue Reading“Friendly. On time. Knowledgeable.”
Continue Reading“Fast an efficient service. Very helpful and explained how to use the new products and checked that it would not be a problen with our system. Very cooperative and a positive experience.”
Continue Reading“Fast an efficient service. Very helpful and explained how to use the new products and checked that it would not be a problen with our system. Very cooperative and a positive experience.”
Continue Reading“Gabe was very professional and did a great job installing my new toilet.”
Continue Reading“Gabriel clearly specified our options, worked hard to discharge the blockage in our kitchen sink pipe, and continued to check if he had succeeded. He spent hours working , decided he needed to use a wider snake, and worked until the blockage was cleaned. I appreciated his hard work, perseverance, and easy going communications style.”
Continue Reading“The office called to let me know Lucas was on his way. He arrived with a smile and promptly set to work. He took care to wear booties when in my home . He was patient with my questioning and the fee for service was exactly what he quoted when he looked at my air…
Continue Reading“Tim and Anthony did an excellent job this morning. My toilet no longer rocks from side to side nor does it leak around the bottom. They also replaced my flush handle and the inside workings. Not only that but everything was cleaned up perfectly. I expect my toilet to last me many more years! Thank…
Continue Reading“Andrew and Cameron were par excellence. They were efficient, knowledgeable and worked well together. They explained everything and I trusted they were doing a good and honest job. Karen Louise Hall PS they changed their booties going in and out!”
Continue Reading“Donovan is very knowledgeable and helpful.Answers all questions and concerns!!!And very trustworthy!!He is an excellent Technician and should be recognized by your company as a model employee for knowledge,integrity, his willingness to guide the customer with a very positive experience!!!!!”
Continue Reading“Getting used to having Andrew and Cameron here in recent weeks as they have installed and repaired several home items. Nice to work with, punctual and clean we’ve had nothing but good experiences with these guys. We appreciate their work.”
Continue Reading“Thank you for your help!”
Continue Reading“Service performed on 5/10/24. Main service was to install whole-house surge protector. Additional service was new ceiling fan transmitter and remote and replace sump pump battery. Arrived on time, explained the process, and we had final inspection. This duo is professional, respectful, patient – with a sense of humor. I feel very comfortable having them…
Continue Reading“I want to start out by tell you that was performs Andrew and Cameron which was performed om May 2 and 3 They arrived on time and things got started. Threw out the job they kept me informed. even though it took two days, It was nice to see how professional the job was going.”
Continue Reading“Donovan did a great job. Easy fix. He was in/out in about 30 mins. He arrived at the scheduled time. Many thanks”
Continue Reading“Great service, very professional, knowledgeable and competent.”
Continue Reading“Andrew and Cameron were very professional and cleaned up as they worked. They did the job in a timely fashion. I would definitely use them again for any other electrical work.”
Continue Reading“Technicians are and were personable and knowledgeable. My husband and I both highly recommend them.”
Continue Reading“Lucas arrived on time,; he was very courteous, neat and extremely patient when answering my questions. He emailed me an invoice in a prompt, timely manner..I even told him I wanted him , not a different technician , to continue servicing my air conditioner and furnace.”
Continue Reading“Lucas arrived on time,; he was very courteous, neat and extremely patient when answering my questions. He emailed me an invoice in a prompt, timely manner..I even told him I wanted him , not a different technician , to continue servicing my air conditioner and furnace.”
Continue Reading“They were on time and completed the job in a timely manner . Very polite .”
Continue Reading“I’m thankful to have Jos. Frederick & Sons involved with all necessary things I require at times – all is explained and they work well doing whatever is necessary. I have had them working on all items I require – under plumbing, electrical, replacement of items – Andrew and Cameron worked well and explained all…
Continue Reading“Don was very friendly. He answered my questions and inspected the area in question confirming that all was safe. Frederick & Son has installed and has been servicing my heaters since 2005 and I have always been happy with their work.”
Continue Reading“Air conditioner was serviced. Both technicians were courteous and thorough. Excellent service!”
Continue Reading“Friendly, quick check on Air Conditioner”
Continue Reading“The work was done quickly and efficiently by professionals who were respectful, informed and skillful. It was a pleasure to have them do the repairs! I am grateful that I can count on Frederick’s for consistent quality and workmanship!”
Continue Reading“Andrew and Cameron were very courteous and professional , they did an excellent job and worked well as a team. I would highly recommend them to anyone looking for work to be done in a residential or commercial setting. Sincerely, Robert F. Montgomery II”
Continue Reading“I’m very pleased with the service Dennis and Gabe provided. I appreciate how they kept me informed and explained what was causing the drain to continue to clog. I was given a price up front for the cost of the repair. They put down drop cloths to protect my floor and underneath the sink. The…
Continue Reading“Andrew and his partner were wonderful. Extremely . I had a very tricky light/switch issue. They consulted the operations manual, ON LINE (which I never would have thought to do) to fix it. Fabulous. Kudos to them both. Thanks. Paul J. Arendt”
Continue Reading“Both Dennis and Gabe were very pleasant and answered all our concerns.”
Continue Reading“Both Dennis and Gabe were very pleasant and answered all our concerns.”
Continue Reading“Tim and assistant ( sorry, I forgot his name) both very pleasant and courteous)..came on time to replace the sump pump , it was quite rusted (I assume from the age of the pump). They had the replacement on their truck, which is a time saver – the cost for the new pump, was a…
Continue Reading“Tim and assistant ( sorry, I forgot his name) both very pleasant and courteous)..came on time to replace the sump pump , it was quite rusted (I assume from the age of the pump). They had the replacement on their truck, which is a time saver – the cost for the new pump, was a…
Continue Reading“Denis and Gabe were awesome. They were able to fix a hose bib for me without having to replace the whole thing which would have been a much more costly affair. I will continue to use this company and will highly recommend them to all my friends.”
Continue Reading“Lucas came out to check our gas heater for our maintenance agreement. He was personable and efficient. We have been customers of Jos. Frederick & Sons for many years and we have been very happy with their service.”
Continue Reading“I am a commercial Facility Manager with CBRE. Two ejection pumps/sewer pumps failed at a local urgent care center that I manage and because this was a medical center and they had already been closed for the day – it was an emergency. I attempted to use a CBRE approved vendor but he was unable…
Continue Reading“One of the best teams in Delaware . They did it all (electrical; heating; plumbing – full bathroom installation; sump pump; a/c ventilation). Outstanding service and sales.”
Continue Reading“Gabriel was very professional. He was friendly, left everything clean, he was also trying to be quiet with the tools when I was on the phone in the next room. The price seemed high, but he at least made me feel like I was getting better service for it.”
Continue Reading“Great emergency service. I would call again for all my HVAC and plumbing needs. I highly recommended.”
Continue Reading“I have been a customer for 5 years now. This company is excellent. They make sure the job is done right. Their workmen are competent, knowledgeable, and courteous. When I have an issue with plumbing, the air conditioning equipment they installed, or anything else in my home, it is Joseph Frederick and Sons that I…
Continue Reading“He did an amazing job, installing a new gas line and my new gas stove”
Continue Reading“I was impressed with John Ratcliffe. He listened attentively to me explaining our situation and offered various possible causes and fixes. All things considered, he assured me that our heater would be repaired that very evening. That was what I, as the customer, wanted to hear. Kudos to John! Olaf arrived and introduced himself. We…
Continue Reading“Dennis was great!! Surely one of the best servicemen I have ever had. He replaced my 40 year old sump pump…was so efficient and knowledgeable. Because of him, I will use this company for other issues in the future.”
Continue Reading“Excellent customer service. Professional and courteous. Dennis came up with a great solution for the bathroom shower issue until we are ready to do a full remodel.”
Continue Reading“Thank you, Donovan, for the excellent service. I appreciate your professionalism.”
Continue Reading“Want to compliment Lucas Kemp. He’s your first service tech to ever ask me if my radiators were all heating properly. Have owned my home since 1992 & have had furnaces serviced annually. Please pass this on to his supervisor. He was both courteous & pleasant. Hoping he does my maintenance next year.”
Continue Reading“Just wanted to write about the great service I received today. Dennis and Gabe were right on time, knowledgeable, did very clean work, and explained everything very thoroughly. In this day and age of poor service these guys are top notch. I have found my new plumbers!!”
Continue Reading“Andrew and Cameron, were punctual, arriving in A.M. Very polite, explained how generator would be serviced. Obviously had material/supplies on their truck to complete the jobl.. Andrew explained what they did today, and it was time for the annual maintenence service. I appreciate their courtesy, professionalism, efficient service. Thanks to Jos. Frederick & Sons for…
Continue Reading“Clearly an experienced professional and expert in his field, very helpful in providing information that made our decision to proceed easier.”
Continue Reading“Donovan came on time and with the repair part. He diagnosed the problem over the phone. He finished the work in about 30 minutes. Excellent job!”
Continue Reading“I had an AC issue and Donovan H from Jos Frederick and Sons did a great job at diagnosing the problem and fixing it on the spot. Very impressed by his knowledge and professionalism.”
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