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TRUSTED BY DUNDALK, MD HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon727
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Dundalk, MD

*The Angi rating for Heating And Air Conditioning Service companies in Dundalk, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Dundalk, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on January 20, 2026

Find Heating and air conditioning pros in Dundalk

Avatar for Portillo Home Remodeling

Portillo Home Remodeling

4.98(
48
)
•Approved Pro

Portillo Home Remodeling

4.98(
48
)
•Approved Pro
Super Service Award
Customers say: Quality work
3 years of experience
Free onsite estimate

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Portillo services responded quickly to my request. He came out and gave me a fair estimate. On the day he was to do the work, he arrived early and dis the job in a timely manner. I would definitely hire again."

Erica C on January 2026

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

"Portillo services responded quickly to my request. He came out and gave me a fair estimate. On the day he was to do the work, he arrived early and dis the job in a timely manner. I would definitely hire again."

Erica C on January 2026

Avatar for Hamilton Plumbing, Heating & Air Conditioning

Hamilton Plumbing, Heating & Air Conditioning

4.94(
126
)
•Approved Pro

Hamilton Plumbing, Heating & Air Conditioning

4.94(
126
)
•Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
48 years of experience

Hamilton Plumbing and Heating Co is a family owned and operated business serving the community since 1978! Offering superior quality work and excellent customer service. We are licensed and trained professionals in Plumbing, Heating and Air Conditioning. Specializing in Water Heaters.

"Deceptive. Installed defective equipment then disappeared"

Elam K on November 2025

Hamilton Plumbing and Heating Co is a family owned and operated business serving the community since 1978! Offering superior quality work and excellent customer service. We are licensed and trained professionals in Plumbing, Heating and Air Conditioning. Specializing in Water Heaters.

"Deceptive. Installed defective equipment then disappeared"

Elam K on November 2025

Avatar for Pure Air HVAC, LLC

Pure Air HVAC, LLC

4.90(
67
)
•Approved Pro

Pure Air HVAC, LLC

4.90(
67
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

Pure Air HVAC, LLC, is dedicated to providing our clients with the very best in installation, service and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction. Carrier is our preferred brand as it provides the most reliable systems and highest efficiencies.

"we had a Bosch boiler hot water combo system installed in the spring of last year for $9500. We used the heating system on some cool days and nights, so it seemed to do the job of heating our home. This year is the first time we have used it for the entire winter. If the temperatures are mild the system works okay. If the temperature drops below 30 degrees it will not heat our home. We were able to keep the house warm thanks to our pellet stove. In Hine sight, We wish we would have stayed with the conventional boiler system for about half of what we paid for this inadequate system. buyers know what you are getting into before you buy."

Richard A on February 2023

Pure Air HVAC, LLC, is dedicated to providing our clients with the very best in installation, service and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients and guarantee your satisfaction. Carrier is our preferred brand as it provides the most reliable systems and highest efficiencies.

"we had a Bosch boiler hot water combo system installed in the spring of last year for $9500. We used the heating system on some cool days and nights, so it seemed to do the job of heating our home. This year is the first time we have used it for the entire winter. If the temperatures are mild the system works okay. If the temperature drops below 30 degrees it will not heat our home. We were able to keep the house warm thanks to our pellet stove. In Hine sight, We wish we would have stayed with the conventional boiler system for about half of what we paid for this inadequate system. buyers know what you are getting into before you buy."

Richard A on February 2023

K&K Electric

4.94(
31
)
•Approved Pro

K&K Electric

4.94(
31
)
•Approved Pro
Customers say: Quick response
19 years of experience
Free onsite estimate

K&K Electric has over 20 years in the industry. There isn't a job too big or small for our highly qualified staff. We care about our customers and what they need from us. Give us a call today for all your electrical needs!

"Job was done and was very knowledgeable and affordable. Communication was great and will recommend him to other’s! "

Princess W on October 2025

K&K Electric has over 20 years in the industry. There isn't a job too big or small for our highly qualified staff. We care about our customers and what they need from us. Give us a call today for all your electrical needs!

"Job was done and was very knowledgeable and affordable. Communication was great and will recommend him to other’s! "

Princess W on October 2025

Avatar for Heating & Cooling Certified Mechanic

Heating & Cooling Certified Mechanic

4.97(
31
)
•Approved Pro

Heating & Cooling Certified Mechanic

4.97(
31
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
Free onsite estimate

With over a decade of experience, Heating & Cooling Certified Mechanic is professionally licensed and dedicated to ensure your HVAC service/install exceeds your expectations! We specialize in HVAC services, repairs and we guarantee your satisfaction! We will not leave until the job is done right! We pride ourselves on the quality of work we provide, while delivering great customer service! Call or click for your FREE estimate today! HVAC, Water Heater, Air Quality System Installations, Repairs & More Need repair? Call Today, Need Installation or a 2nd Opinion? Call Today. 24 Hour Service CALL TODAY! CALL TONIGHT!

"The estimate process went very smoothly. The proposal was well written & allowed electronic signature. Communication leading up to the install date was timely and professional. The work was completed on time and correctly. The installation team was friendly and competent."

Stanley R on July 2025

With over a decade of experience, Heating & Cooling Certified Mechanic is professionally licensed and dedicated to ensure your HVAC service/install exceeds your expectations! We specialize in HVAC services, repairs and we guarantee your satisfaction! We will not leave until the job is done right! We pride ourselves on the quality of work we provide, while delivering great customer service! Call or click for your FREE estimate today! HVAC, Water Heater, Air Quality System Installations, Repairs & More Need repair? Call Today, Need Installation or a 2nd Opinion? Call Today. 24 Hour Service CALL TODAY! CALL TONIGHT!

"The estimate process went very smoothly. The proposal was well written & allowed electronic signature. Communication leading up to the install date was timely and professional. The work was completed on time and correctly. The installation team was friendly and competent."

Stanley R on July 2025

Avatar for Bamford Plumbing and Heating Inc

Bamford Plumbing and Heating Inc

4.97(
59
)
•Approved Pro

Bamford Plumbing and Heating Inc

4.97(
59
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
17 years of experience

**SPECIALIZING IN BOILER REPAIR AND REPLACEMENT** ** 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.

"Great. Doug answered our inquiry promptly and fixed our issue the next day for significantly less than the first quote."

Kevin C on January 2025

**SPECIALIZING IN BOILER REPAIR AND REPLACEMENT** ** 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.

"Great. Doug answered our inquiry promptly and fixed our issue the next day for significantly less than the first quote."

Kevin C on January 2025

Avatar for Paramount Heating & Air Conditioning, LLC

Paramount Heating & Air Conditioning, LLC

4.88(
110
)
•Approved Pro

Paramount Heating & Air Conditioning, LLC

4.88(
110
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 years of experience

Paramount Heating & Air Conditioning, LLC, is a locally-owned and family-operated business, with 30 years in the industry. We are able to help you with all your HVAC repair needs!

"The Technician was very professional and informative."

Janet Q on October 2020

Paramount Heating & Air Conditioning, LLC, is a locally-owned and family-operated business, with 30 years in the industry. We are able to help you with all your HVAC repair needs!

"The Technician was very professional and informative."

Janet Q on October 2020

Avatar for Reliability Home, LLC

Reliability Home, LLC

4.63(
853
)
•Approved Pro

Reliability Home, LLC

4.63(
853
)
•Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
19 years of experience

Reliability Home has a single mission: Customer Satisfaction! We deliver on our promise by having experienced and professional Service Technicians and Office Staff. We focus on the needs of our customers, providing personalized attention and a stress-free experience. This approach has set us apart and made us one of the leading Heating and Air Conditioning companies in Maryland. Hello, I'm Robert Matheny, the Operations Manager here at Reliability Home. When you hire Reliability Home, you are joining our family of satisfied customers. Give us a call today!

"They were very tolerant of my blubbering phone calls wondering about a timeline with regards to when the second tech would get to me with the part. Both techs were awesome!"

Suzanne D on September 2023

Reliability Home has a single mission: Customer Satisfaction! We deliver on our promise by having experienced and professional Service Technicians and Office Staff. We focus on the needs of our customers, providing personalized attention and a stress-free experience. This approach has set us apart and made us one of the leading Heating and Air Conditioning companies in Maryland. Hello, I'm Robert Matheny, the Operations Manager here at Reliability Home. When you hire Reliability Home, you are joining our family of satisfied customers. Give us a call today!

"They were very tolerant of my blubbering phone calls wondering about a timeline with regards to when the second tech would get to me with the part. Both techs were awesome!"

Suzanne D on September 2023

Avatar for At Your Service Heating & Cooling, LLC

At Your Service Heating & Cooling, LLC

4.72(
148
)
•Approved Pro

At Your Service Heating & Cooling, LLC

4.72(
148
)
•Approved Pro
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
13 years of experience

At Your Service Heating & Cooling LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Response was great and finished job in one day."

mark l on December 2025

At Your Service Heating & Cooling LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Response was great and finished job in one day."

mark l on December 2025

Avatar for Pohlman Plumbing Inc

Pohlman Plumbing Inc

4.63(
38
)
•Approved Pro

Pohlman Plumbing Inc

4.63(
38
)
•Approved Pro
Customers say: Quick response
18 years of experience
Free onsite estimate

Pohlman Plumbing is a local, family-owned and -operated full-service plumbing and HVAC company serving the Baltimore metro area. Founded in 2008, our professional and friendly customer service plus our top-notch skills have made us one of the most trusted local plumbers in Baltimore. When you choose to work with Pohlman Plumbing, you can have peace of mind knowing we always stand by the Pohlman Promise: fast service, at a fair price, and done right the first time.

"The gentleman that work this business go above and beyond to make the best suggestions for they work required. This is the second time I have hired them. My sub pump went after and more rain was coming they came out with 2 hours to fix the problem. Extremely professional man. I will be er use any other plumbing business other than Pohlman. I highly recommend if you have a plumping issue."

Georgette T on January 2024

Pohlman Plumbing is a local, family-owned and -operated full-service plumbing and HVAC company serving the Baltimore metro area. Founded in 2008, our professional and friendly customer service plus our top-notch skills have made us one of the most trusted local plumbers in Baltimore. When you choose to work with Pohlman Plumbing, you can have peace of mind knowing we always stand by the Pohlman Promise: fast service, at a fair price, and done right the first time.

"The gentleman that work this business go above and beyond to make the best suggestions for they work required. This is the second time I have hired them. My sub pump went after and more rain was coming they came out with 2 hours to fix the problem. Extremely professional man. I will be er use any other plumbing business other than Pohlman. I highly recommend if you have a plumping issue."

Georgette T on January 2024

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Heating and Air Conditioning questions, answered by experts

There are several common types of HVAC systems that you may have, including split systems, hybrid HVAC, duct-free systems, packaged heating and air, geothermal heating, or even portable units for heating or cooling. If you aren’t sure which type is in your home or are looking to install something different, you should consult an HVAC pro to determine which option is right for your heating and cooling needs.

You should use a breathable, weather-resistant cover with ventilation. It can be a top cover or a full cover that has mesh to allow airflow. A full, non-breathable cover can cause moisture to build up, leading to rust, frozen parts, and corrosion. A full cover also attracts unwanted critters, such as mice, that can damage the wiring and your unit. If you need to protect your AC unit from falling icicles, choose a sturdy top cover or piece of wood that prevents icicles from damaging your unit.

Not if you have a standard unit. Because portable AC units actually work to dehumidify the room, you’ll likely need to drain the unit from time to time—but you won’t have to put water into it. There is, however, another type of air conditioner called a swamp cooler that requires water to operate. If you have a swamp cooler, you may need to fill a reservoir with water and potentially ice. But a swamp cooler is different from a standard portable AC unit.

Unfortunately, a freon leak will persist even when your AC unit is off. The freon in the AC unit is under pressure no matter the status of the system, so it will continue to drip through the leak even when you shut off the entire unit. It will continue to leak freon until it’s completely empty.

The decision to put your AC unit on the roof or ground depends on the climate in your area, the roof shape, accessibility, and budget. If you live in a warm climate or don’t have existing ductwork, it’s likely best to stick to a traditional AC unit that sits on the ground. However, if you lack yard space, live in a mild climate, and have easy access to the roof, your home may benefit from a rooftop AC unit. 

The Dundalk, 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.

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