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

Avatar for Grove Heating and Cooling Inc
Grove Heating and Cooling Inc
4.7(
153
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+5 more

Serving Chester, MD and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Everything went extremely well. I found Grove a completely professional organization with highly skilled workers. Their plumber subcontractor handled the installation of all gas piping in my house, oversaw the hookup with BGE's gas line and installed the hot water heater. Grove provided a skilled crew of 5, with 2 working outside and 3 inside to remove all old equipment, do some duct repair and install the new air conditioner, gas furnace, humidifier and thermostat in 2 days. They also removed all debris from the worksite and swept it clean. Their work proposal included a year's maintenance, which I feel sure will be equally satisfactory. This was a big project (3 days including the plumber), but I am confident they would handle both small and large jobs with the same competence and professionalism. I highly recommend them."
Response time5 hrs
Response rate100%
13 neighbors recently requested a quote
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Avatar for ARS of Maryland
ARS of Maryland
4.2(
181
)
Central A/C - Service or RepairCentral A/C - InstallCentral Air Cleaner - Install or Replace+3 more

Serving Chester, MD and surrounding areas

Approved (Corporate)

In business since 1945

Free estimates

Emergency services offered

"Arrived on time , very detailed on a very difficult install . The installation team checked all the boxes, I highly recommend this company for air-conditioning services."
New System Installation
158 neighbors recently requested a quote
Recommended by71%of homeowners
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Avatar for Blue Dot
Blue Dot
4.1(
353
)
Central A/C - Service or RepairCentral A/C - InstallCentral Air Cleaner - Install or Replace+3 more

Serving Chester, MD and surrounding areas

Approved (Corporate)

In business since 1982

Free estimates

Emergency services offered

"I purchased the Annual Maintenance Plan for my Heating & Air Conditioning systems. Blue Dot has excellent customer service. Adrian serviced my heating system yesterday and he was great!!"
System Installation
496 neighbors recently requested a quote
Recommended by70%of homeowners
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Avatar for Chesapeake Comfort Systems, LLC
Chesapeake Comfort Systems, LLC
4.2(
36
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Chester, MD and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Great Company! Small jobs and big jobs, same great service. Highly recommended!"
Bryant Oil Furnace Install
Gas Furnace Install
Goodman Gas Furnace install
Air Handler
Ductless evaporator connection

+4

Response time8 hrs
Response rate88%
Recommended by96%of homeowners
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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 BusinessCentral Humidifier - Repair or Service

Serving Chester, MD 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!"
3 neighbors recently requested a quote
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Avatar for PELAGIC SERVICES LLC.
PELAGIC SERVICES LLC.
4.8(
12
)
Window A/C Unit - InstallWindow A/C Unit - Install - For Business

Serving Chester, MD and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Excellent work on multiple repairs and some remodeling in our home. The estimates for each job were fair and the work was completed on time. Pelagic is courteous and cleans up the work sight diligently. I highly recommend this contractor and the folks that work under him."
Remodeling - General Project
Third set of shelves & lighting.
Crisp & Clean, Mud Room!
Final install & epay trim spa.
Run electric & plumbing , install decking

+31

Response time1 day
Response rate100%
5 neighbors recently requested a quote
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Avatar for D&D HVAC, LLC
D&D HVAC, LLC
New to Angi
Swamp Cooler - Service or Repair - For Business

Serving Chester, MD and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

10 years of experience Proudly serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!As a family business we take great pride in over 30 years of experience, expertise and quality customer service that we provide to our customers. It is our mission to give you excellent workmanship and customer satisfaction from start to completion of a project.

Response time20 mins
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Avatar for Durte Contractors LLC
Durte Contractors LLC
New to Angi
Window A/C Unit - Install - For Business

Serving Chester, MD and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Durte Contractors. We are a BLACK owned business. We offer an extensive range of services. \nConcrete Drywall property services painting fencing Decks cleaning these are just a few of the services offered but not limited to.

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FAQs for air conditioning projects in Chester, MD

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 Chester, MD 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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