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Best air conditioning pros near New Castle, DE

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Top-Rated Air conditioning pros in New Castle - Updated Nov 2026

Avatar for Aire Serv of Newark & Middletown
Aire Serv of Newark & Middletown
4.7(
38
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+3 more

Serving New Castle, DE and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"First class service from the initial call through the install. Chris and Jeff were on time for services and completed the job in a timely manner. Very impressed with their professionalism, communication and quality of work. I will be using Aire Serv for all of my future services and repairs. I highly recommend Aire Serv to anyone in the area."
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+128

24 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for One Hour Heating & Air Conditioning
One Hour Heating & Air Conditioning
4.4(
108
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving New Castle, DE and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"Now, they are One Hour Heating & Air Conditioning. In spite of our area having a heat wave, they were able to come out in less than 2 hours of my call. Joe J. fixed the problem in less than an hour, and my A/C was back on. Great price, too."
Project Photos
Response time3 days
Response rate100%
21 neighbors recently requested a quote
Avatar for Horizon Services, LLC (DE)
Horizon Services, LLC (DE)
3.8(
1,298
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving New Castle, DE and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"Had an appointment for annual maintenance checkup. The Horizon tech was ontime, neat and polite. He checked all the routine items and resolved all of my concerns. He made a couple of recommendations for cleaner air circulation. All services were performed on my maintenance contract for no charge. This is the second heatpump that I've purchased from Horizon."
Horizon Services HVAC
Horizon Services HVAC
Horizon Services HVAC
Horizon Services HVAC
Horizon Services HVAC

+18

11 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Prism Enterprises Parent Company, LLC
Prism Enterprises Parent Company, LLC
4.7(
396
)
Air Ducts & Vents - Clean

Serving New Castle, DE and surrounding areas

Approved

In business since 1982

Free estimates

Emergency services offered

"Mark and helper climbed their ladder outside to the Soffit under the roof overhanging. They cleaned the vent and ran a brush all the way down to the clothes dryer. Now my clothes are dry and the amount of dust has increased due to the opened pathway. Any dust that came outside was cleaned up. Great job. Thanks!"
Scramble?
11 neighbors recently requested a quote
Recommended by94%of homeowners
CleanCareCleaningServices
5.0(
32
)
Air Ducts & Vents - Clean

Serving New Castle, DE and surrounding areas

Approved

Free estimates

Emergency services offered

Customers say: Quick response

"I cannot recommend this cleaning company highly enough! I hired them to do a deep clean on a three-story townhome to get it ready for the rental market, and they exceeded every expectation. Preparing a rental property is always stressful, but they made the transition seamless. Managing three floors of living space is no small feat, but the team tackled it with incredible efficiency and attention to detail. Here is what really impressed me: Flawless Attention to Detail: They didn't just do a surface wipe-down. They got into every nook and cranny, from the baseboards and window tracks to the inside of the appliances and cabinets. Tackled the High-Traffic Areas: With three floors, stairs can be a nightmare to get perfectly clean. They made the stairwells and banisters look brand new. Professional & Reliable: They arrived right on time, brought all their own high-quality supplies, and worked tirelessly until the job was done."
10 neighbors recently requested a quote
Avatar for Elite HVAC-R Service
Elite HVAC-R Service
5.0(
7
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving New Castle, DE and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"I had a great experience with Nate. He was extremely knowledgeable about A/C systems and was far more well-versed than many other companies in the area. He took the time to explain everything clearly, answer my questions, and make sure I understood the issue and solution. Nate was also very friendly, professional, and informative throughout the entire visit. I truly appreciated his expertise and excellent customer service. I would highly recommend Nate to anyone needing HVAC service."
3 neighbors recently requested a quote
Old Skool HVAC,LLC
4.4(
11
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving New Castle, DE and surrounding areas

Approved

In business since 1982

Emergency services offered

Warranties offered

"

Not only did they put in a new furnace, but the ducting that was in here at the house was, like 30 years old so they tore it out and re-did it with custom ducting made out of these big sheets of metal. They only charged me $3,000 for the furnace. I am glad I did because it has made a huge difference in the air quality here.

"
Response time1 day
7 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Done Right Today, Inc.
Done Right Today, Inc.
4.8(
582
)
Central A/C - Service or Repair

Serving New Castle, DE and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I had Montrell install some gas pipe for a dryer hook up. He is an absolute professional. Above and beyond what I expected. He was so good, I asked for him by name the next time I needed plumbing done. He connected my fridge water line."
My jobs
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Response time1 day
Response rate100%
160 neighbors recently requested a quote
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Air Conditioning FAQs, answered by experts

While many states do not have specific licensing requirements for HVAC companies, your local city or county might. It's always a good idea to check local requirements online and use a tool like Angi’s contractor license lookup to confirm that the company you’re considering is licensed. Regardless of licensing, you should always ensure the company you hire is fully insured to avoid potential lawsuits if a technician is injured on your property. Additionally, it is recommended to check if the company holds third-party certifications, such as North American Technician Excellence (NATE) certification or R-410A certification, which qualifies them to work with HVAC refrigerants.

Whether an HVAC damper should be open or closed depends on the season, the zone it controls, and the temperature in that zone. In the summer, open upstairs dampers and close lower-level dampers to get the most efficient cooling possible. In the winter, do the opposite. Cool air will naturally flow down to lower levels, while warm air will rise. This keeps your system from working harder and helps prevent common AC problems.

If you’re looking for an energy-efficient heating and cooling system to heat a compact to average-sized home, then a ductless system is absolutely worth considering. The installation is less hassle when compared to a ducted heat pump system, and because your electricity bills should drop, it’s an excellent long-term investment.

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

Yes. In fact, not only are AC tuneups worth it, but they’re actually necessary to keep your air conditioner in good condition, improve its efficiency, and potentially prevent major damage. Experts recommend getting a tuneup at least once per year. In most cases, you’ll want to schedule it during the spring so that you can address any issues before the hottest months of the year.

The New Castle, DE homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.