Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Upperco, MD

There are 31 highly-rated local heating and air conditioning pros.

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    Average homeowner rating
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    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Upperco

Avatar for Farnen & Dermer, Inc.

Farnen & Dermer, Inc.

10500 Reisterstown Road
3.67(
20
)
Approved Pro

Farnen & Dermer, Inc.

10500 Reisterstown Road
3.67(
20
)
Approved Pro
10 local quotes requested
123 years of experience

Our local and family owned and operated company at Farnen & Dermer has been a trusted name in HVAC for over 100 years. We offer expert heating, cooling, indoor air quality, and plumbing services to residential properties in Owings Mills and throughout Baltimore County. Our experienced, licensed, and factory-trained technicians will be there in a flash—proudly offering same-day appointments and 24/7 emergency repairs when you reach out to us by phone. If you need heater or AC replacement, we offer free estimates and flexible financing options, so a high-quality system doesn’t break the bank. From speedy AC repairs and heating maintenance to air filtration installation and boiler replacement, our team has you covered—backing up all our services with a 100% satisfaction guarantee.

"THIS COMPANY IS SCAMMING PEOPLE!!! -On 6/24/21, Farnen and Dermer installed a brand new YORK HVAC system in my home. Everything appeared to be fine, and there were no issues for 2 years. -On 8/28/23, I noticed an extremely loud buzzing coming from my outside unit, so I called them to come check on the problem. My unit was still cooling, but extremely loud. Glen A. showed up to diagnose the problem and seemed like a nice enough guy. After about an hour, he informed me that my entire indoor and outdoor unit need full replacement for a total of $10,900. (I paid $7,500 just 2 years earlier). I said, surely this was covered under warranty because the unit was only 2 years old? He then informed me that it was not because it was â struck by lightning and the warranty does not cover an act of god. -At this point in my head things were not adding up, especially since the unit was still cooling, both of my neighbors units were fine (townhouse) and he did not even check the inside unit. I told Glen I need to think about the replacement because that is a lot of money that I do not have at the time. Glen disconnected my outside unit completely before he left with the hottest week of the summer upcoming (95F-98F) and charged me $189 for the visit. -I am lucky enough to have a Fire Marshall as a good friend to ask him about the situation. This guy sees lightning strikes pretty frequently. He told me there is no way that my unit was struck by lightning based off of what I was seeing and also because it would have gotten to all of my neighbors units (townhouse). He informed me it is literally impossible. THE UNIT WAS STILL COOLING! -I decided to get a 2nd opinion from another company. The other company came out and told me that my compressor was bad and that there was no lightning strike to speak of. They also informed me that it was covered under the warranty and they could fix it. The technician said that he noticed the wiring on the outside unit was incorrect. There was a red wire crossed with a black wire. He said that is exactly why my 2 year old compressor went out. This company even put their findings in writing for me. They replaced my parts and got me up and running for 82% LESS THAN F and D! -I am not the only person this has happened to. It appears to be standard practice. You can see the attached pictures of reviews from other people in the same boat on the Better Business Bureau website. I will be submitting a complaint through BBB and demanding a full refund. This is pure predatory behavior and it is unacceptable!"

Dan W on September 2023

Our local and family owned and operated company at Farnen & Dermer has been a trusted name in HVAC for over 100 years. We offer expert heating, cooling, indoor air quality, and plumbing services to residential properties in Owings Mills and throughout Baltimore County. Our experienced, licensed, and factory-trained technicians will be there in a flash—proudly offering same-day appointments and 24/7 emergency repairs when you reach out to us by phone. If you need heater or AC replacement, we offer free estimates and flexible financing options, so a high-quality system doesn’t break the bank. From speedy AC repairs and heating maintenance to air filtration installation and boiler replacement, our team has you covered—backing up all our services with a 100% satisfaction guarantee.

"THIS COMPANY IS SCAMMING PEOPLE!!! -On 6/24/21, Farnen and Dermer installed a brand new YORK HVAC system in my home. Everything appeared to be fine, and there were no issues for 2 years. -On 8/28/23, I noticed an extremely loud buzzing coming from my outside unit, so I called them to come check on the problem. My unit was still cooling, but extremely loud. Glen A. showed up to diagnose the problem and seemed like a nice enough guy. After about an hour, he informed me that my entire indoor and outdoor unit need full replacement for a total of $10,900. (I paid $7,500 just 2 years earlier). I said, surely this was covered under warranty because the unit was only 2 years old? He then informed me that it was not because it was â struck by lightning and the warranty does not cover an act of god. -At this point in my head things were not adding up, especially since the unit was still cooling, both of my neighbors units were fine (townhouse) and he did not even check the inside unit. I told Glen I need to think about the replacement because that is a lot of money that I do not have at the time. Glen disconnected my outside unit completely before he left with the hottest week of the summer upcoming (95F-98F) and charged me $189 for the visit. -I am lucky enough to have a Fire Marshall as a good friend to ask him about the situation. This guy sees lightning strikes pretty frequently. He told me there is no way that my unit was struck by lightning based off of what I was seeing and also because it would have gotten to all of my neighbors units (townhouse). He informed me it is literally impossible. THE UNIT WAS STILL COOLING! -I decided to get a 2nd opinion from another company. The other company came out and told me that my compressor was bad and that there was no lightning strike to speak of. They also informed me that it was covered under the warranty and they could fix it. The technician said that he noticed the wiring on the outside unit was incorrect. There was a red wire crossed with a black wire. He said that is exactly why my 2 year old compressor went out. This company even put their findings in writing for me. They replaced my parts and got me up and running for 82% LESS THAN F and D! -I am not the only person this has happened to. It appears to be standard practice. You can see the attached pictures of reviews from other people in the same boat on the Better Business Bureau website. I will be submitting a complaint through BBB and demanding a full refund. This is pure predatory behavior and it is unacceptable!"

Dan W on September 2023


"Very responsive. Expected a much higher bill"

Ronald L on November 2020

We are not happy unless you are happy! We look forward to bringing you our quality of work and excellence to your homes. Why would you look anywhere else?

"Very responsive. Expected a much higher bill"

Ronald L on November 2020


"Our Water Furnace was just 5 years old. Has worked flawlessly, we are warm in Winter and cool in the Summer. Best is our Yearly total electric bill was $1450!!!"

Jay M on April 2021

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!

"Our Water Furnace was just 5 years old. Has worked flawlessly, we are warm in Winter and cool in the Summer. Best is our Yearly total electric bill was $1450!!!"

Jay M on April 2021


Avatar for SPECS Heating & Cooling

SPECS Heating & Cooling

2930 Green Hill Ct
5.00(
14
)
Approved Pro

SPECS Heating & Cooling

2930 Green Hill Ct
5.00(
14
)
Approved Pro
Customers say: Quick response
100 local quotes requested
1 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Service was fast and courteous. Both techs, Jermaine and Raoul, were great!"

Karen J on September 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Service was fast and courteous. Both techs, Jermaine and Raoul, were great!"

Karen J on September 2025


Avatar for Ivan

Ivan

No reviews yet

Ivan

No reviews yet
3 years of experience

"I am a certified HVAC technician with 2 years of experience, specializing in the installation, repair, and maintenance of heating, ventilation, and air conditioning systems. I pride myself on offering a professional, reliable and efficient service to all my clients. My goal is to make sure that every home and business has an HVAC system that works optimally, providing comfort and energy savings. Whether it's troubleshooting or optimizing your system's performance.

"I am a certified HVAC technician with 2 years of experience, specializing in the installation, repair, and maintenance of heating, ventilation, and air conditioning systems. I pride myself on offering a professional, reliable and efficient service to all my clients. My goal is to make sure that every home and business has an HVAC system that works optimally, providing comfort and energy savings. Whether it's troubleshooting or optimizing your system's performance.


Supreme Mechanical Services

5.00(
1
)

Supreme Mechanical Services

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Here at Supreme Mechanical Services we specialize in professional installation and replacement of residential and commercial heating and cooling systems. We pride ourselves on providing the highest quality workmanship, fair straightforward pricing, and providing a supreme customer experience every time.

"Awesome work and awesome prices. These guys are really here to help and are extremely talented! Highly recommend this company! Ps - I do my own maintenance so I have retaped unit since install… initially was perfect when installed. My tape job doesn’t compare!"

Charles W on March 2024

Here at Supreme Mechanical Services we specialize in professional installation and replacement of residential and commercial heating and cooling systems. We pride ourselves on providing the highest quality workmanship, fair straightforward pricing, and providing a supreme customer experience every time.

"Awesome work and awesome prices. These guys are really here to help and are extremely talented! Highly recommend this company! Ps - I do my own maintenance so I have retaped unit since install… initially was perfect when installed. My tape job doesn’t compare!"

Charles W on March 2024


Avatar for srm mechanical

srm mechanical

4532 Golden Meadow Dr
No reviews yet

srm mechanical

4532 Golden Meadow Dr
No reviews yet
25 years of experience

SRM Mechanical is a small veteran owned heating and air conditioning company with over 20 years experience specializing in installations of residential and commercial equipment, design and installation of Duct work, service and repair for gas, heat pump, and oil furnaces (Boilers) systems. We service every manufacture brand of equipment.

SRM Mechanical is a small veteran owned heating and air conditioning company with over 20 years experience specializing in installations of residential and commercial equipment, design and installation of Duct work, service and repair for gas, heat pump, and oil furnaces (Boilers) systems. We service every manufacture brand of equipment.


Designs & Consultation - Mounting - Framing - Designs - Flooring - Doors/Windows - Drywall - Painting - Cabinets - Electrical - Plumbing - HVAC


Avatar for synergy mechanical solutions, inc.

synergy mechanical solutions, inc.

6618 Blackhead Road
No reviews yet

synergy mechanical solutions, inc.

6618 Blackhead Road
No reviews yet
15 years of experience

A full service, installation- Commerical and Residential HVAC company. Specializing in home optimization, maintenance, service/repair. Serving customers all over Maryland for 13 years. 24 hour emergency service, Master license holder. We answer the phone and on-site for you when you need us!

A full service, installation- Commerical and Residential HVAC company. Specializing in home optimization, maintenance, service/repair. Serving customers all over Maryland for 13 years. 24 hour emergency service, Master license holder. We answer the phone and on-site for you when you need us!


Avatar for One Hour Heating & Air Conditioning of Cockeysville

One Hour Heating & Air Conditioning of Cockeysville

100 Cockeysville Rd
5.00(
3
)

One Hour Heating & Air Conditioning of Cockeysville

100 Cockeysville Rd
5.00(
3
)
Customers say: Quick response
2 years of experience

At One Hour, we prioritize respect—for our clients, their time, and the trust they place in us to maintain a comfortable home environment. That commitment is reflected in our 100% customer satisfaction guarantee, which covers all our work for two years, and our promise to always be on time. Our ownership and management team bring a diverse array of skills and experiences to the table. Jonathan Jacobs has a strong technical background in HVAC and electrical systems, having worked with various industry leaders. This experience has shaped his philosophy for running a successful business and leading a cohesive team. In contrast, Heather Jacobs brings expertise from the education sector, where she honed her communication skills and built lasting relationships with families from diverse backgrounds. Greg Wilson, our Operations Manager, brings over 20 years of HVAC experience, positioning him perfectly to motivate our team and foster strong client relationships. Driven by a goal-oriented mindset, we have long aspired to establish a solid foundation for our family while serving our community. Discovering the opportunity to join the One Hour franchise felt like a timely sign, prompting us to take this exciting leap. Together, we leverage our unique skills and experiences to create a workplace that is truly a force to be reckoned with, dedicated to building strong relationships with our clients and enhancing our community.

"Great job, and informed of details that made sense."

Alisha J on June 2024

At One Hour, we prioritize respect—for our clients, their time, and the trust they place in us to maintain a comfortable home environment. That commitment is reflected in our 100% customer satisfaction guarantee, which covers all our work for two years, and our promise to always be on time. Our ownership and management team bring a diverse array of skills and experiences to the table. Jonathan Jacobs has a strong technical background in HVAC and electrical systems, having worked with various industry leaders. This experience has shaped his philosophy for running a successful business and leading a cohesive team. In contrast, Heather Jacobs brings expertise from the education sector, where she honed her communication skills and built lasting relationships with families from diverse backgrounds. Greg Wilson, our Operations Manager, brings over 20 years of HVAC experience, positioning him perfectly to motivate our team and foster strong client relationships. Driven by a goal-oriented mindset, we have long aspired to establish a solid foundation for our family while serving our community. Discovering the opportunity to join the One Hour franchise felt like a timely sign, prompting us to take this exciting leap. Together, we leverage our unique skills and experiences to create a workplace that is truly a force to be reckoned with, dedicated to building strong relationships with our clients and enhancing our community.

"Great job, and informed of details that made sense."

Alisha J on June 2024

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Heating and Air Conditioning questions, answered by experts

Yes, a dirty evaporator coil can freeze up. Dirty evaporator coils can’t absorb or transfer heat properly. The dirt and grime restrict airflow, which is needed to move heat throughout the system properly. Your air conditioning unit could freeze over, or it can cause your heat pump to freeze.

Diagnose whether your HVAC damper is bad by assessing airflow. For a manual damper, close it and run your system. Air should stop flowing through the associated vents. If you feel air, it’s likely a bad damper that requires repair or replacement. Automatic dampers should maintain your desired room temperature. If not, they may be faulty, and you may need to invest in some HVAC repair costs.

There are several steps you can take to prevent your AC drain from clogging. This includes cleaning the drain line at least every three months, changing the filter every one to three months, and getting your AC serviced annually. Also, if any problems arise with your AC, hire an HVAC technician to deal with them ASAP.

There are a few things you can do to make your AC repair technician’s job easier and your home more comfortable while you wait for AC repair:

  • Cut back trees, shrubs, and weeds around the outdoor compressor 

  • Clear a pathway inside and outside to your AC components

  • Set up a ladder for attic access if necessary

  • Pull your window AC out of the window and place in an easily accessible spot

  • Supplement with fans and open windows to help keep your house comfortable

You should flush your AC drain line once every three months to keep it clear of debris and buildup. Keeping your AC drain line clean prevents clogs, backups, mold growth, and extra wear on your AC unit. If you live in a humid area or have several furry pets, up your cleaning schedule to once a month.

The Upperco, MD homeowners’ guide to heating and air conditioning services

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