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Find Air conditioning pros in Middletown

Avatar for Desmond Heating & Cooling Solutions
Desmond Heating & Cooling Solutions
4.5(
68
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Middletown, DE and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Mr. Desmond from Desmond Heating and Cooling Solutions, LLC came on time and was very professional. He fixed my thermostat and made sure I enough Freon and have central air throughout the house."
DHCS
DHCS
DHCS
DHCS
Response time3 hrs
Response rate95%
4 neighbors recently requested a quote
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Avatar for Aire Serv of Newark & Middletown
Aire Serv of Newark & Middletown
4.7(
38
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+12 more

Serving Middletown, DE and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"I have never been more pleased with a service company ever! Aire Service is excellent in every way, from my first call to the time the technician showed up at the door. I can not say enough good things about this company. The customer service is the best I have encountered so far. I highly recommend them!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+128

22 neighbors recently requested a quote
Recommended by85%of homeowners
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Avatar for Aire Serv of Middletown
Aire Serv of Middletown
4.8(
15
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+1 more

Serving Middletown, DE and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Hired them from their Elkton Maryland branch. They did excellent work. The office staff was very courteous and helpful. Great company. Had my furnace fixed expediently. Thanks, Aire!"
AC Tune-Up
AC Tune-Up
Mini Split System Outdoor Unit Installation
Mini Split System Outdoor Unit
Mini Split System Outdoor Unit

+63

Recommended by85%of homeowners
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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 Middletown, 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%
19 neighbors recently requested a quote
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Avatar for Horizon Services, LLC (DE)
Horizon Services, LLC (DE)
3.8(
1,298
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Middletown, DE and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

"My air/heat system was a wall unit and they do not service them. However my water heater went and they did a great job replacing it."
Horizon Services HVAC
Horizon Services HVAC
Horizon Services HVAC
Horizon Services HVAC
Horizon Services HVAC

+18

15 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Done Right Today, Inc.
Done Right Today, Inc.
4.8(
582
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceCentral Humidifier - Repair or Service

Serving Middletown, DE and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Installed a new water heater in less than 24 hours. 2 techs were knowledgeable and professional."
My jobs
My jobs
My jobs
My jobs
Response time1 day
Response rate100%
288 neighbors recently requested a quote
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Avatar for Elite HVAC-R Service
Elite HVAC-R Service
5.0(
5
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For BusinessCentral Humidifier - Repair or Service

Serving Middletown, DE and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Yes he explained why electricity bill was higher than normal and how to reduce it!"
1 neighbors recently requested a quote
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Avatar for Sunny's Services
Sunny's Services
4.7(
56
)
Window A/C Unit - Install

Serving Middletown, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Air conditioner inspected and repaired."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+81

Response time1 day
1 neighbors recently requested a quote
Recommended by55%of homeowners
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Avatar for True Blue Heating & Air LLC
True Blue Heating & Air LLC
5.0(
5
)
Ductless Mini-split A/C - Install or ReplaceCentral A/C - Service or RepairCentral A/C - Install+4 more

Serving Middletown, DE and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

True Blue Mechanical provides quality heating and cooling services for your comfort. We take pride in delivering exceptional care and value every time!

5 neighbors recently requested a quote
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Avatar for Harris Plumbing, Heating, Air & Electrical
Harris Plumbing, Heating, Air & Electrical
3.9(
44
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Middletown, DE and surrounding areas

Approved

In business since 1988

Credit card accepted

Customers say: Quick response

"Angel at Harris Plumbing, Heating, Air, & Electrical helped me with an issue with my HVAC. He was very professional, courteous and thorough. He did a great job explaining the issue to me and the work he did to resolve the issue. I would highly recommend Angel and Harris Plumbing, Heating, Air & Electrical."
Team
Team
Team
Truck
Truck

+8

Response time1 day
456 neighbors recently requested a quote
Recommended by33%of homeowners
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FAQs for air conditioning projects in Middletown, DE

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Middletown, DE homeowners’ guide to air conditioning services

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

See all articles