Top-rated air conditioning pros.

Get matched with top air conditioning pros in Ellicott City, MD

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Air conditioning pros in Ellicott City

Avatar for MARYLAND HEATING & COOLING
MARYLAND HEATING & COOLING
4.9(
90
)

Serving Ellicott City, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Purchased the AC unit from MH&C two years prior. Very happy with the price and installation. The evening of the start of 4th Jul weekend, notice AC not working. Called MH&C at 11pm and left a message. At 700am, received return call and was told they would squeezed me in that day. Came by the house that afternoon and 45 minutes later, I have cold air. I couldnt have asked for better service, especially on a holiday weekend. 100% recommend."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time2 days
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Buric Heating and Air Conditioning
Buric Heating and Air Conditioning
5.0(
25
)

Serving Ellicott City, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I like to research before choosing. I received 4 quotes for the job and Nick Buric was the only one that listened to our needs and created an option that was perfect for the space...as well as being at a reasonable cost. They did a really great job installing a slim "ducted" mini-split unit in a small concealed ceiling space in my basement. The unit is completely hidden and uses ducts & vents to provide efficient heat and AC in our basement -- it is super quiet too. These guys are real pros and did what was right & needed to best suit the house versus what would have been easiest for them -- the other firms I talked to didn't want to touch the job (quoted a traditional concealed mini-split mounted on the wall instead) but Nick had a vision and his team did it all to perfection. I will definitely use them again in the future and recommend to my friends and neighbors."
Happy Customer
12 neighbors recently requested a quote
Recommended by64%of homeowners
Avatar for No-Frost Air Conditioning & Heating, LLC
No-Frost Air Conditioning & Heating, LLC
4.7(
411
)

Serving Ellicott City, MD and surrounding areas

Approved

In business since 1971

Free estimates

Warranties offered

"This is our 4th or 5th time using No Frost Heating and Air and we are always satisfied. We knew we'd have to pay about $18k-$22k to replace our dual-zone heating and air conditioning units based on what our neighbors recently paid so we weren't surprised when No Frost quoted $20,500 before $2k in rebates. They came out to inspect our old system and provided several options (basic, mid-range, and top of the line). They also explained each one. About 2 weeks later, we had two new top of the range units installed without issue over a two-day period. The technicians called before they arrived, were efficient, and cleaned up before they left. We even received a thank you card in the mail. We will continue to turn to No Frost for all of our heating and air conditioning needs because they do a great job at a very fair price."
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
26 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Tim Kyle Electric Heating & Cooling
Tim Kyle Electric Heating & Cooling
4.9(
369
)

Serving Ellicott City, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Emergency services offered

Warranties offered

"Showed up late, didn't install the bathroom fan as the manufacturer recommended (pic, fan5), dented the fan grille (pic, fan1). It was installed without the supplied support rails because he claimed he couldn't get in the attic. Now sure how I got the photos, then... The vent hose was kinked in the attic and hardly any air came out of the soffit, so I had to go into the attic to correct it. That's when I took the photos. Didn't give a price up front because apparently a bath fan with bluetooth speakers isn't in whatever book they price from. Not in the book? Overcharge. Generally very unhappy with the whole experience and will be looking elsewhere in the future. Not sure how when the customer supplies EVERYTHING but a romex clamp someone can charge so much. Absolutely unacceptable. $465 to have someone dent my fan, install it incorrectly, and throw out the parts that weren't used. Like the battery to the manufacturer supplied remote and the joist supports. I'm leaving the cost of service as originally quoted because it was only lowered to $465 after I complained about being ripped off."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+17

Response time1 day
Response rate95%
15 neighbors recently requested a quote
Avatar for Edwin's Air Conditioning & Heating, LLC
Edwin's Air Conditioning & Heating, LLC
4.9(
28
)

Serving Ellicott City, MD and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Edwin was great about showing up on time and professional. At his recommendation, thermostat was replaced but it did not able solve the issue and he recommended that I replace the entire system. Thankfully another company was able find the issue and fix it by replacing a broken part."
Response time2 hrs
Response rate90%
Recommended by96%of homeowners
Avatar for GAC Services
GAC Services
4.8(
292
)

Serving Ellicott City, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"Angie's List reviews made me go with GAC Services for a new furnace and air conditioning unit. Five mechanics showed up early in the morning in three trucks. They were clean cut young men and very polite. They made a lay down area in my basement with blankets. They wore covers over there shoes while in and out of the house. They were very respectful of my home. They worked non stop until 5:00 PM. They had a separate sheet metal mechanic that showed up and did really nice sheet metal work. I was impressed. After a year went by my thermostat went out and they came out and replaced it free of charge. I signed up for the maintenance contract and they come out twice a year . Once in the winter and once in the summer. Another part went bad after two years and it was under warranty and they replaced it free of charge. They are honest and reliable. I highly recommend them."
Additional Photos
61 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for McCrea Heating & Air Conditioning Services of MD
McCrea Heating & Air Conditioning Services of MD
4.5(
318
)

Serving Ellicott City, MD and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"We had them Replaced furnace and air conditioning unit. It was installed about a year ago but they came out for a regular service about a month ago. the service was free, part of the contract. I have no complaints, it was all good. They were responsive. they were punctual. I have no problems, it was a good deal when I bought it, it's a good deal now. I don't have any issues with how the service went. i bought it through them and I have no regrets and everything was the same as I felt when I bought it. It was a good deal, I made the right choice. Anytime you buy a major system and it doesn't go right you have a problem. I'm a happy camper.1 worker took less than an hour to complete."
Additional Photos
Additional Photos
Additional Photos
12 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Bamford Plumbing and Heating Inc
Bamford Plumbing and Heating Inc
4.8(
65
)

Serving Ellicott City, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

**SPECIALIZING IN BOILER REPAIR AND REPLACEMENT**\n** WE OFFER 24/7 EMERGENCY SERVICE** Bamford Plumbing & Heating Inc. has been providing excellent customer service since 2009. We are a family owned and operated company with over ten years of experience in the plumbing and heating industry. We are licensed and insured in the State of Maryland. We offer 24 hour emergency service and free estimates on new work.

Do you know if your sump is still working? We also have sump pumps avialable to protect you from power outages. That’s right no power no problem forget about the “battery back up” sump pumps if you have municipal water supply this is the way to go call today for details !
Tankless
Power Vent
Gas and Electric
Tree roots giving you problems with your drains? Have us come out today and try a Rootx root treatment !

+2

1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Carroll Mechanical, Inc.
Carroll Mechanical, Inc.
5.0(
20
)

Serving Ellicott City, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"My air conditioning stopped working last night. I called Carroll mech . They responded immediately and sent technician to the house few hours later. Jordan Scott was very professional. He checked the system carefully and fix the issue soon. Really appreciate the service!"
Trane Heat Pump
Carrier AC + Furnace
Response time5 hrs
77 neighbors recently requested a quote
Recommended by22%of homeowners
Avatar for Beltway Air Conditioning, Heating & Plumbing
Beltway Air Conditioning, Heating & Plumbing
4.8(
74
)

Serving Ellicott City, MD and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Dave the Tech was great. He called ahead to let me know he would be here in about 15 minutes and he arrived in the 15 minutes. He was courtesy and helpful and checked the unit inside and out. He explained every thing he was doing and what he found and how it could be fixed. Dave even took the time to talk to my husband over the phone on the issues he was finding. It was quite clear that Dave knew his stuff. I highly recommend Beltway Air Conditioning and Heating, LLC. I am definitely keeping their number by my phone."
Brazing
XC25
XC25
Our Team!
Response time1 day
Recommended by96%of homeowners
...
Showing 1-10 of 623

FAQs for air conditioning projects in Ellicott City, 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 Ellicott City, MD homeowners’ guide to air conditioning services

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