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Avatar for Desmond Heating & Cooling Solutions
Desmond Heating & Cooling Solutions
4.5(
68
)

Serving Dover, 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 rate93%
9 neighbors recently requested a quote
Avatar for Major league hvac
Major league hvac
5.0(
20
)

Serving Dover, DE and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"Mike and his team did a great job with installation of a complete new HVAC system involving a ducted system on the 1st floor and mini splits on the 2nd floor (this set up best accommodated our house for function and zoning). Their experience and knowledge was demonstrated by their well planned work and installation, including working around existing conditions such as tight crawl spaces, as well as coordination with existing plumbing, electrical, structural components, etc. They coordinated and were accommodating of requests for equipment and vent locations. And they started and completed the work as promised. I would highly recommend them."
Additional Photos
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+6

10 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Aire Serv of Newark & Middletown
Aire Serv of Newark & Middletown
4.7(
38
)

Serving Dover, 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
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+128

24 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Aire Serv of Middletown
Aire Serv of Middletown
4.8(
15
)

Serving Dover, 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
Avatar for One Hour Heating & Air Conditioning
One Hour Heating & Air Conditioning
4.4(
108
)

Serving Dover, DE and surrounding areas

Approved

In business since 1991

Free estimates

Emergency services offered

"Rich from One Hour Heating and Cooling was great! He took the time to tell me exactly what went wrong and went above and beyond to provide great services on my AC unit. One Hour Heating and Cooling is the only business I would go to for my AC needs."
Project Photos
Response time3 days
22 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Done Right Today, Inc.
Done Right Today, Inc.
4.8(
581
)

Serving Dover, DE and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Ryan install a new water heater , Job was done quickly and he explained every thing that he had done and answered all questions i had . Cleaned up everything , i would use this company again"
My jobs
My jobs
My jobs
My jobs
Response time1 day
Response rate93%
239 neighbors recently requested a quote
Avatar for Something Constructive
Something Constructive
4.9(
118
)

Serving Dover, DE and surrounding areas

Approved

In business since 1972

Free estimates

Emergency services offered

"First of all Patsy showed up, actually a day early to look at the project. This was amazing being I had been waiting a year plus for another person to do the job. He started right away on the job. Due to the salt air climate, I had bought lifetime finished brass hardware that matched the hardware for the front door. When Patsy started to work on the install, he discovered that the screen knob and the main door hardware would interfere with the closure of the doors. He suggested that I return the hardware and purchase another, which I did. In the meanwhile, he sent me a suggestion picture of a system that would work. I bought a similar one with the same lifetime guarantee as my original hardware that looked like his picture. We arranged for Patsy's return and he was even slightly early the day that was set. The lock that I purchased had to be mortised in the door. He and his other carpenter, Chris, did not blink an eye and installed the lock. The door was slightly thicker than the opening and again Patsy knew exactly how to make it fit, work and look exactly like it was made for that size. Both Patsy and Chris were meticulous throughout the entire installation and the final product is spectacular! I will not hesitate to use this company again! They are extremely professional, trust worthy and a pleasure! The bill was more than fair for the complexity of the job! It was not your typical screen door install! I wish I could upload a picture for everyone to see the fabulous job it turned out to be!
"
Additional Photos
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+25

Response time2 days
Recommended by97%of homeowners
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FAQs for air conditioning projects in Dover, 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 Dover, DE homeowners’ guide to air conditioning services

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