Joseph Frederick & Sons
Joseph Frederick & Sons is a HVAC provider serving Wilmington, DE. Rated 4.7★ with 158 Google reviews. See services, review signals, and request a quote.
HVACWilmington, DE
On this page
Company overview
- TradeHVAC
- Service areaWilmington, DE
- Google rating4.7★ (158 reviews)
- Phone(302) 994-5786
- Address810 Stanton Rd, Wilmington, DE 19804, USA
Services offered
- installation
- repair
- inspection
- emergency
Photos
Photos from Joseph Frederick & Sons, Terri Hill, Robert F. Montgomery II
What customers say
“Dave went the extra mile in providing multiple options for our furnace and A/C replacement. The install crew - Jake, Jake, and Omar - were among the most knowledgeable and well-trained techs I have d…”
“Gabriel was professional, had clear communication and is highly competent. We had an issue that he quickly assessed and provided options. He performed his service and all works as expected. We were es…”
“Until the service call last week, I heartily recommended this company. I can no longer be a supporter. The tech was nice, but came without the necessary adapter to check the refrigerant level in my tw…”
“Came out same day and installed a hot water heater. Great/ professional service. Would go with them again in a heartbeat”
Key highlights
Strengths
- Highly rated (4.7★ average)
- Large review volume (158 reviews)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Joseph Frederick & Sons offer?
Joseph Frederick & Sons provides: installation, repair, inspection, emergency. They serve residential and commercial customers in Wilmington, DE.
What is Joseph Frederick & Sons's rating?
Joseph Frederick & Sons has a 4.7 out of 5 star rating based on 158 Google reviews.
Is this company licensed in Delaware?
All listed providers have a verified Delaware contractor license at time of publication. You can verify on the Delaware Division of Professional Regulation — Board of Plumbing, Heating/Ventilation/Air Conditioning and Refrigeration Examiners lookup at https://dpronline.delaware.gov/mylicense%20weblookup/Search.aspx.
Does Joseph Frederick & Sons offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: Delaware Division of Professional Regulation — Board of Plumbing, Heating/Ventilation/Air Conditioning and Refrigeration Examiners · Company data: verified business records + Google Business profile
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