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Find Air conditioning pros in Marriottsville

Avatar for Holtzople Heating, Air Conditioning, & Electrical Services
Holtzople Heating, Air Conditioning, & Electrical Services
4.9(
210
)

Serving Marriottsville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Tim was our technician. he called telling us when he would arrive. He is very professional, friendly and efficient. The work was performed professionally and was reviewed with me before his departure. The air conditioning was tested and the temperature reset before Tim left. We have used this company previously and we are extremely pleased with all of our interactions with the employees. we will Continue using Holtzople Heating and Air Conditioning Service!!. Five Stars!"
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+47

12 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Buric Heating and Air Conditioning
Buric Heating and Air Conditioning
5.0(
25
)

Serving Marriottsville, MD and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"The process was easy and the service top notch from the estimate with the sales rep to scheduling and the install. Ill recommend them to anyone who needs heating and air services."
Happy Customer
3 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 Marriottsville, MD and surrounding areas

Approved

In business since 1971

Free estimates

Warranties offered

"This is an excellent company. We have used them for year to service our heating and air conditioning units. It became necessary to think about replacing the units. We have two. Decided to replace both at the same time. They came out on a Monday and gave us an estimate and came out on Thursday and Friday to do the work. They totally cleaned up after themselves and made sure everything was working properly. Then they called a few days later to see that everything was working well. I highly recommend this company. All the technicians are polite and competent. The office staff is nice beyond belief. If you need any heating/AC work done, this is the company to do it."
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20 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 Marriottsville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Emergency services offered

Warranties offered

At Tim Kyle Electric, Heating & Cooling, we believe that honesty, respect, and integrity are important.\nThat’s why we have up-front pricing. You approve the price before we start your job. We also respect your home. All of our employees have to pass drug tests and background checks before they begin employment with us. All of our electricians are professionally trained and uniformed service technicians.

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+17

21 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for GAC Services
GAC Services
4.8(
292
)

Serving Marriottsville, MD and surrounding areas

Approved (Corporate)

In business since 1970

Free estimates

Warranties offered

"My experience was fine. I went with this company instead of another company because of the reviews I read on Angie's List. It took them about a half a day to install the air conditioning unit. I think it was 3 workers that came out."
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27 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Bamford Plumbing and Heating Inc
Bamford Plumbing and Heating Inc
4.8(
65
)

Serving Marriottsville, 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

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

Serving Marriottsville, 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
86 neighbors recently requested a quote
Recommended by22%of homeowners
Avatar for Michael Bonsby HVAC, Plumbing & Electrical MD
Michael Bonsby HVAC, Plumbing & Electrical MD
4.2(
134
)

Serving Marriottsville, MD and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I received six estimates for replacing my air conditioning system. Of the six, four came in at a reasonable price including the estimate from the Michael Bonsby Company. Three of the four estimators made a good impression but the one who impressed me the most was David Lux of Michael Bonsby. He spent the most time, provided the most information, and fully answered all of my questions in all of my contacts with him prior to signing the contract. Even after I signed the contract, had the system installed, and made final payment, David Lux was still very prompt in answering my inquiries. So far I am very happy with the air conditioning system installed by and I would highly recommend the Michael Bonsby Company if you ever need to replace your air conditioning system."
Routine Maintenance
Maintenance
Mitsubish Ductless System
Outside Mitsubishi Unit
Carrier

+3

42 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for JDL HVAC & Plumbing Services
JDL HVAC & Plumbing Services
4.5(
950
)

Serving Marriottsville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Mr Isak fix my air conditioning Outside unit and performed a system check. During the service check he found the installation booklet inside the unit which could have caused additional problems. Mr Isak was very professional and had a great personality. I would definitely recommend this company to anyone looking for service."
NEW INSTALL
CLEANING COILS
CLEANING COILS
 CLEANING COILS
 CLEANING COILS

+118

97 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Carroll Mechanical, Inc.
Carroll Mechanical, Inc.
4.7(
22
)

Serving Marriottsville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Warranties offered

Carroll Mechanical is an HVAC contractor that is dedicated to providing clients with the very best maintenance, repair, and installation services. We are based in Eldersburg and service customers throughout the MD region. We are a local business that is built on integrity, transparent pricing, and technical excellence. Our team of expert technicians have experience working with all major manufacturers. Our mission is to keep you comfortable and we proudly offer emergency availability where possible. If you are a homeowner, property manager, or business owner, give us a call today to learn more!

Ins
Ins
Response time10 hrs
186 neighbors recently requested a quote
Recommended by16%of homeowners
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FAQs for air conditioning projects in Marriottsville, 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 Marriottsville, MD homeowners’ guide to air conditioning services

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