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Find Air conditioning pros in Unionville

Avatar for Tetteris HVAC
Tetteris HVAC
4.7(
192
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+1 more

Serving Unionville, MD and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"After several years of shoddy furnace repairs, replacements and guesswork from our propane provider, I decided to find another service. I quickly got a call back and appointment from Tetteris Heating and Air. After a brief diagnostic, Greg Shaeffer almost immediately assessed the problem was a malfunctioning gas valve. After replacing and converting the valve, he discovered that the old valve had not been installed or converted properly by the previous company. Greg was very professional, helpful, friendly and didn't mind answering any questions I had. I couldn't be more satisfied with the work and service that Tetteris provided. Highly recommended!"
Additional Photos
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10 neighbors recently requested a quote
Recommended by94%of homeowners
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Markool Heating & Cooling, LLC
4.7(
21
)
Central A/C - InstallCentral Humidifier - Install or ReplaceCentral A/C - Install - For Business+10 more

Serving Unionville, MD and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."
Response time7 hrs
5 neighbors recently requested a quote
Recommended by84%of homeowners
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Avatar for Wenbrooke Services
Wenbrooke Services
4.6(
107
)
Central A/C - Install

Serving Unionville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Warranties offered

"They were all very nice and professional. They did an outstanding job on replacing our heating and air unit."
Commercial Sign
Dinning room fixture
Commercial Office
Kitchen Pendants
Response time11 hrs
81 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for SPECS Heating & Cooling
SPECS Heating & Cooling
4.8(
17
)
Central A/C - Service or Repair

Serving Unionville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"Super professional and responsive! Managed to fix my AC in a timely manner. They were very knowledgeable and patient with answering all my questions."
Response time5 hrs
10 neighbors recently requested a quote
Recommended by50%of homeowners
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Dave's Mechanical Services
5.0(
1
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Unionville, MD and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Response time4 hrs
Recommended by100%of homeowners
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Avatar for Crafty Puppers Woodworking
Crafty Puppers Woodworking
5.0(
1
)
Window A/C Unit - Install - For Business

Serving Unionville, MD and surrounding areas

Approved

Free estimates

Small jobs welcome

With over 15 years of experience in all aspects of home improvement, I provide high quality results at affordable prices. Every project is personal to me and I will treat your home as I would my own.

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

Serving Unionville, 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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Avatar for Tetteris hvac
Tetteris hvac
4.7(
181
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+2 more

Serving Unionville, MD and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"This firm was extremely responsive. If I need another repair, I am calling Tetteris heating and air"
Ductless Mini-split install.
Gas furnace & Ac install.
Full system install
75 ton roof top package unit install
Goodman

+1

Response time5 hrs
Response rate89%
Recommended by95%of homeowners
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Avatar for TriState Home Services
TriState Home Services
4.6(
204
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving Unionville, MD and surrounding areas

In business since 1949

Free estimates

Emergency services offered

"The contractor did a quick but thorough job repairing each electrical outlet and provided advice on how to maintain them properly. The ring doorbell installation was quick and neat. The contractor wore a face mask at all times and we had a completely contact-less visit (including the bill payment - we were able to "sign" via our own devices). This company was a pleasure to work with."
Furnace Tune Up
Floor Heating System
Additional Photos
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+2

Response time1 day
Recommended by91%of homeowners
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FAQs for air conditioning projects in Unionville, 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 Unionville, 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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