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Verified Reviews for Air Conditioning pros in Delaware, NJ

*The Angi rating for Air Conditioning companies in Delaware, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

*The HomeAdvisor rating for Air Conditioning companies in Delaware, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Air Conditioning needs.

Last update on August 16, 2026

Top-Rated Air conditioning pros in Delaware - Updated Nov 2026

Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.9(
74
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Delaware, NJ and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"They responded to my home quickly and professionally. The technician was very knowledgeable and candid and saved me unnecessary expenses. They fixed the issue and has our ac back up and running within an hour and made sure everything was clean before they left. Will definitely recommend them."
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+1

2 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Speer Air
Speer Air
4.6(
165
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Delaware, NJ and surrounding areas

Approved

In business since 1958

Free estimates

Emergency services offered

"I have used Speer Air for several years for HVAC preventive maintenance at my home. We recently expanded and they installed a package unit to take care of the expansion space. The work was good and they have been back for adjustments as necessary."
Residential Attic Install
Commercial Multi Unit Install
Guardian Series
Response time2 days
Response rate100%
5 neighbors recently requested a quote
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Avatar for All Weather Heating & Cooling
All Weather Heating & Cooling
4.5(
70
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Delaware, NJ and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I was very happy with my service call today! The repairman, Scott, was knowledgeable and pleasant and wore a mask and gloves throughout., so I felt safe, despite the pandemic. He serviced both of my central air systems and diagnosed the problem with the malfunctioning one and fixed it. By the time he left my house was already a much more pleasant place to be!"
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+13

Response time3 days
7 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for D.M. Solutions, LLC
D.M. Solutions, LLC
4.9(
64
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Delaware, NJ and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Dave at D.M. Solutions took care of my Air Conditioning problem quickly and efficiently. He was very knowledgeable and made my house livable again. I would hire him again if my air-con goes on the fritz."
Before
After
After 2
Boilers before
Before relocation

+6

Response time7 hrs
2 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Advanced Professional Management, LLC
Advanced Professional Management, LLC
4.2(
939
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+1 more

Serving Delaware, NJ and surrounding areas

Approved

In business since 1999

Emergency services offered

Warranties offered

"Had a technician come out in the weekend for estimating the cost of installing new mini split ACs. Rab was very professional, and took the time to understand what my husband and I were looking for. He also bounced off several options and ideas with us, and promptly worked on giving us a quote. Really helped us in budgeting and planning for this project. If the need arises, I would definitely consider using this company's services in my house!"
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+33

Response time11 hrs
Response rate100%
3 neighbors recently requested a quote
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Avatar for Protocol Air
Protocol Air
4.5(
11
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Delaware, NJ and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Protocol Air gave me an offer. I asked others to match. No one can. So I went with Protocol air. Sure enough, they send two guys the next morning with the furnace and installed it professionally. The workmanship was great. Better yet, Protocol Air offered to help apply for rebate for me for the high efficiency system. I have not see the rebate check yet. Will update when get it."
Response time6 hrs
Response rate100%
Recommended by100%of homeowners
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Avatar for DYETT HVAC PRO CORP
DYETT HVAC PRO CORP
New to Angi
Window A/C Unit - Service or Relocate

Serving Delaware, NJ and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

At DYETT HVAC PRO CORP. we offer professional heating, ventilation, air conditioning and refrigeration services. We install, repair and perform maintenance on all types of equipment—from walk-in coolers, freezers, display cases and refrigerators to central units, mini-splits, rooftop units and all types of air conditioning systems, as well as any type of heating system, from oil boilers to the most modern high-efficiency models.\n\n

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Air Conditioning FAQs, answered by experts

This is a bit of a trick question. Even though the seasons arrive at the same time every year, the weather doesn’t always behave according to the calendar. So, while it’s fair to say that you can expect to turn on your AC starting in late May or early June, it all depends on the outside temperature and how cool you like to keep your home.

Yes, a mini split AC system can replace central air—and quite easily, too. Since mini splits don’t require ductwork, homeowners can convert their central air system to a mini split to save money and energy. Consult with an HVAC professional to learn more about the process of replacing your central air with a mini split.

The time it takes for an air conditioner to dry fully after cleaning depends on the unit's size and humidity levels. Most units will dry within two to four hours after cleaning, but check the manufacturer's recommendations for drying times. Make sure to leave the unit off until it's completely dry.

There are ways to detect a refrigerant leak with several different testing methods. However, most homeowners can figure out something’s wrong with their AC unit by noticing these common signs:

  • Ice forming on the evaporator coil

  • Water leaks near the AC unit

  • Frequent hissing sounds

  • Increased electric bills

  • Unit takes longer than usual to cool

  • Unit is blowing hot air

If you know how to identify supply and return ducts, you’ll find that only the supply ducts will have dampers. Although your return ducts can have dampers, it’s not common. If you have one return duct that is pulling in too much air, adding a damper to it can help with overall system performance. However, dampers on return ducts are not a necessary addition for most homes.

The Delaware, NJ homeowners’ guide to air conditioning services

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

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