Top-rated heating and air conditioning pros.

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

There are 32 highly-rated local heating and air conditioning pros.

TRUSTED BY DUNDALK, MD HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon1k+
    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 October 18, 2025

Find Heating and air conditioning pros in Dundalk

Avatar for Home Systems Appliance Repair

Home Systems Appliance Repair

805 Peppard Dr.
4.89(
695
)
•Approved Pro

Home Systems Appliance Repair

805 Peppard Dr.
4.89(
695
)
•Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
1992 years of experience

We are not a global, national franchise or a remote out of state contractor with no local ties. We are a homegrown, local minority owned company committed to customer satisfaction. Founded in 1992, our company has performed over 100,000 service calls, and have over 30 years of experience. Insured, licensed and bonded we provide perfect service delivery to every customer, every time. We are a two time "Best Of Baltimore" winner. We are an Angie's List Super Service Award Winner 2011-2020. We service Anne Arundel, Baltimore, Carroll, Cecil , Harford, Howard counties, Baltimore city and southern Pennsylvania.

"Home Systems Appliance Repair did an excellent repair on my 18 year old panel-ready 42 inch Built-In counter depth GE Profile Refrigerator. The original GE tech who looked at the leak in the freezer evaporator a year ago, told me the refrigerator was non repairable because the "vacuum pump" retrofit part it needed was no longer available. After paying his $200 visit fee for a 2 minute consultation, he offered me a discount on a new GE refrigerator to fit which had not been built yet. Fast forward to now, GE does have 42 inch built-in counter depth Monogram side-by-side for $12,000 and $2,000 of Kraftmaid panels. Home Systems Appliance Repair cost me $400 to identify and fix a broken heat transfer tab in the freezer evaporator unit. I saved $15,000 - - not bad for paying Appliance Repair for a 2 hour job. They seriously looked and found the problem. I highly recommend Manny (the tech who did the work), and Home Systems Appliance Repair. Susan"

Susan B on May 2025

We are not a global, national franchise or a remote out of state contractor with no local ties. We are a homegrown, local minority owned company committed to customer satisfaction. Founded in 1992, our company has performed over 100,000 service calls, and have over 30 years of experience. Insured, licensed and bonded we provide perfect service delivery to every customer, every time. We are a two time "Best Of Baltimore" winner. We are an Angie's List Super Service Award Winner 2011-2020. We service Anne Arundel, Baltimore, Carroll, Cecil , Harford, Howard counties, Baltimore city and southern Pennsylvania.

"Home Systems Appliance Repair did an excellent repair on my 18 year old panel-ready 42 inch Built-In counter depth GE Profile Refrigerator. The original GE tech who looked at the leak in the freezer evaporator a year ago, told me the refrigerator was non repairable because the "vacuum pump" retrofit part it needed was no longer available. After paying his $200 visit fee for a 2 minute consultation, he offered me a discount on a new GE refrigerator to fit which had not been built yet. Fast forward to now, GE does have 42 inch built-in counter depth Monogram side-by-side for $12,000 and $2,000 of Kraftmaid panels. Home Systems Appliance Repair cost me $400 to identify and fix a broken heat transfer tab in the freezer evaporator unit. I saved $15,000 - - not bad for paying Appliance Repair for a 2 hour job. They seriously looked and found the problem. I highly recommend Manny (the tech who did the work), and Home Systems Appliance Repair. Susan"

Susan B on May 2025

Avatar for Long Distance Moving - All Service Moving

Long Distance Moving - All Service Moving

2141 E Magnolia St
4.88(
385
)
•Approved Pro

Long Distance Moving - All Service Moving

2141 E Magnolia St
4.88(
385
)
•Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2004 years of experience

Long Distance Moving & Storage. Household, Commercial, International, Corporate services available. Our Mission is To exceed expectations on every move. We live this day in and day out. Our service is top notch and fully efficient. Our trucks are perfectly equipped for moving with Pads, dollies, Plastic and much more. We provide Long Distance Moves across the entire country, directly from our West Coast HUBS located in AZ, CA, OR and WA. Or, we team with our partner companies to complete moves together. We are proud to provide a service that no other company offers; Dedicated Trucks. This means that your belongings are loaded on the truck and not combined with anyone else’s items (from/to west coast only). They are not transferred to other trucks or facilities in route which causes damage and loss of items (typical with van lines). We have a set loading day and unloading day. This is by far the safest way to ship. Our interstate rates are per 24ft moving van that holds up to 8,500lbs or 1400CuFt. Some customers require one truck and some require more. One truck holds the average 1800SqFt.

"I cannot say enough great things about All Service Moving—and ESPECIALLY Rico and Reyes, who were absolute lifesavers for my last-minute move. After another moving company bailed on me the day before my scheduled move, All Service swooped in and saved the day. Rico and Reyes showed up EARLY, upbeat, and ready to tackle the challenge—even with super heavy furniture that usually requires a 4-person crew. Somehow, the two of them handled everything like pros without a single scratch or ding—on the furniture or either home. What really stood out was how personable, kind, and thoughtful they were. They moved quickly and efficiently, knowing I was paying by the hour, but never once sacrificed care or quality. They were kind to my mom (who was helping me out), and so sweet to my two dogs too. If you’re planning a move, ask for Rico and Reyes by name. They went above and beyond, and I want their team to know what a fantastic job they did. They deserve every bit of recognition. 100% recommend."

Mary B on May 2025

Long Distance Moving & Storage. Household, Commercial, International, Corporate services available. Our Mission is To exceed expectations on every move. We live this day in and day out. Our service is top notch and fully efficient. Our trucks are perfectly equipped for moving with Pads, dollies, Plastic and much more. We provide Long Distance Moves across the entire country, directly from our West Coast HUBS located in AZ, CA, OR and WA. Or, we team with our partner companies to complete moves together. We are proud to provide a service that no other company offers; Dedicated Trucks. This means that your belongings are loaded on the truck and not combined with anyone else’s items (from/to west coast only). They are not transferred to other trucks or facilities in route which causes damage and loss of items (typical with van lines). We have a set loading day and unloading day. This is by far the safest way to ship. Our interstate rates are per 24ft moving van that holds up to 8,500lbs or 1400CuFt. Some customers require one truck and some require more. One truck holds the average 1800SqFt.

"I cannot say enough great things about All Service Moving—and ESPECIALLY Rico and Reyes, who were absolute lifesavers for my last-minute move. After another moving company bailed on me the day before my scheduled move, All Service swooped in and saved the day. Rico and Reyes showed up EARLY, upbeat, and ready to tackle the challenge—even with super heavy furniture that usually requires a 4-person crew. Somehow, the two of them handled everything like pros without a single scratch or ding—on the furniture or either home. What really stood out was how personable, kind, and thoughtful they were. They moved quickly and efficiently, knowing I was paying by the hour, but never once sacrificed care or quality. They were kind to my mom (who was helping me out), and so sweet to my two dogs too. If you’re planning a move, ask for Rico and Reyes by name. They went above and beyond, and I want their team to know what a fantastic job they did. They deserve every bit of recognition. 100% recommend."

Mary B on May 2025

Avatar for Certified Roofing

Certified Roofing

9520 Berger Rd Suite 112
4.82(
886
)
•Approved Pro

Certified Roofing

9520 Berger Rd Suite 112
4.82(
886
)
•Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
1984 years of experience

Conveniently located in Columbia, Maryland, and Vienna, Virginia. Locally family and veteran owned & operated. Award winning. For the past 40 years, Certified has offered the Maryland, Washington DC, Northern Virginia, Hampton Roads, and Delaware, areas the highest quality workmanship and unmatched level of expertise in specialty metal, shingle, slate, cedar shake, and flat roofing installation. Certified is known for its skilled craftsmen and their attention to detail. All of the professional roofers, estimators, and project managers have completed thousands of hours of training from the largest manufacturers of roofing products. We strive for 100% satisfaction. The training and certifications we earned allow us to live up to this goal. We are confident we will far exceed your expectations on your next roofing, siding, window, or gutter project. Although we have completed many large commercial, industrial, religious and educational projects, the majority of our work is the installation of replacement roofs on residential homes. Licensed in MD, DC, DE, and VA.

"Great presentation about service they provide. Excellent service and price!"

Lou F on October 2025

Conveniently located in Columbia, Maryland, and Vienna, Virginia. Locally family and veteran owned & operated. Award winning. For the past 40 years, Certified has offered the Maryland, Washington DC, Northern Virginia, Hampton Roads, and Delaware, areas the highest quality workmanship and unmatched level of expertise in specialty metal, shingle, slate, cedar shake, and flat roofing installation. Certified is known for its skilled craftsmen and their attention to detail. All of the professional roofers, estimators, and project managers have completed thousands of hours of training from the largest manufacturers of roofing products. We strive for 100% satisfaction. The training and certifications we earned allow us to live up to this goal. We are confident we will far exceed your expectations on your next roofing, siding, window, or gutter project. Although we have completed many large commercial, industrial, religious and educational projects, the majority of our work is the installation of replacement roofs on residential homes. Licensed in MD, DC, DE, and VA.

"Great presentation about service they provide. Excellent service and price!"

Lou F on October 2025

Avatar for Hamilton Plumbing, Heating & Air Conditioning

Hamilton Plumbing, Heating & Air Conditioning

8607 Belair Rd
4.87(
132
)
•Approved Pro

Hamilton Plumbing, Heating & Air Conditioning

8607 Belair Rd
4.87(
132
)
•Approved Pro
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
1978 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.

"Vernon offered to check out our AC the same day. He called before arriving, and once he was here quickly went about his work, explaining to me what he was going to do and why. He quickly diagnosed the problem and solved it. We’ve found a new HVAC maintenance company we can count on. Great service, great responsiveness, good prices. Our AC is back up and running. Thank you, Vernon, and thank you Hamilton!"

Aaron C on July 2024

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.

"Vernon offered to check out our AC the same day. He called before arriving, and once he was here quickly went about his work, explaining to me what he was going to do and why. He quickly diagnosed the problem and solved it. We’ve found a new HVAC maintenance company we can count on. Great service, great responsiveness, good prices. Our AC is back up and running. Thank you, Vernon, and thank you Hamilton!"

Aaron C on July 2024

Avatar for The Best Air Quality and Restoration

The Best Air Quality and Restoration

1123 State Route 3 North 243
4.79(
217
)
•Approved Pro

The Best Air Quality and Restoration

1123 State Route 3 North 243
4.79(
217
)
•Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2009 years of experience

Thebestairqualityandrestoration provides mold and air quality testing, mold remediation/removal and water damage restoration.Our focus is on you the customer to ensure our work is done right and meets your expectations. As the owner I strive to see that my business takes care of your issues. We work with a variety of customers and budgets to offer solutions customized to your needs.

"They did everything phenomenally"

Troy L on April 2024

Thebestairqualityandrestoration provides mold and air quality testing, mold remediation/removal and water damage restoration.Our focus is on you the customer to ensure our work is done right and meets your expectations. As the owner I strive to see that my business takes care of your issues. We work with a variety of customers and budgets to offer solutions customized to your needs.

"They did everything phenomenally"

Troy L on April 2024

Avatar for PestNow LLC

PestNow LLC

22395 Powers Ct
4.71(
1,766
)

PestNow LLC

22395 Powers Ct
4.71(
1,766
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

PestNow brand was founded in Virginia in 1995 as Superior Pest Management when four high school friends came together to form their own company. Today, we have multiple locations in three states, and serve thousands of happy customers. We offer pest control; termite treatments and warranties; mosquito, flea & tick control; WDIs (real estate inspections); lawn fertilization & weed control; TAP insulation; and wildlife solutions for homeowners and businesses in the mid-Atlantic.

"PestNow was hired to inspect our house for termites. This was required by the lender of the family buying our house. PestNow found a pile of wood leaning up against a deck column they said needed repair due to termite damage. PestNow also required the entire house be treated. There were no termites found anywhere other than the pile of wood, according to PestNow. They quoted us for over $800 to treat the house. We questioned the need and amount so they lowered it to $580. As a result of PestNow stating they found termites in the deck column, the lender of the buyers required the deck column be repaired due to termite damage. The deck repair company assessed the deck column agreeing it needed to be repaired, but not due to termites, rather moisture. I question whether PestNow found termites at all. Their unethical tactics cost us well over $1,000. Beware of PestNow."

Mark S on April 2025

PestNow brand was founded in Virginia in 1995 as Superior Pest Management when four high school friends came together to form their own company. Today, we have multiple locations in three states, and serve thousands of happy customers. We offer pest control; termite treatments and warranties; mosquito, flea & tick control; WDIs (real estate inspections); lawn fertilization & weed control; TAP insulation; and wildlife solutions for homeowners and businesses in the mid-Atlantic.

"PestNow was hired to inspect our house for termites. This was required by the lender of the family buying our house. PestNow found a pile of wood leaning up against a deck column they said needed repair due to termite damage. PestNow also required the entire house be treated. There were no termites found anywhere other than the pile of wood, according to PestNow. They quoted us for over $800 to treat the house. We questioned the need and amount so they lowered it to $580. As a result of PestNow stating they found termites in the deck column, the lender of the buyers required the deck column be repaired due to termite damage. The deck repair company assessed the deck column agreeing it needed to be repaired, but not due to termites, rather moisture. I question whether PestNow found termites at all. Their unethical tactics cost us well over $1,000. Beware of PestNow."

Mark S on April 2025

Avatar for PVI Group, LLC

PVI Group, LLC

10045 Baltimore National Pike
4.86(
120
)
•Approved Pro

PVI Group, LLC

10045 Baltimore National Pike
4.86(
120
)
•Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2022 years of experience

PVI Group is your one-call solution for a wide range of home improvement, maintenance and repair and lawn care needs. Our licensed professionals are known for the quality of our workmanship and professional reliability so you know the job will be done correctly and efficiently.

"PVI Group recently installed a new concrete patio at my home and I couldn't be happier with the results. The crew was very professional from start to finish. They arrived on time, completed the job as promised and cleaned up afterwards. The quality of the work is excellent. It's clear they take pride in their work. I highly recommend PVI Group to anyone looking for reliable, skilled professionals."

Gail F on October 2025

PVI Group is your one-call solution for a wide range of home improvement, maintenance and repair and lawn care needs. Our licensed professionals are known for the quality of our workmanship and professional reliability so you know the job will be done correctly and efficiently.

"PVI Group recently installed a new concrete patio at my home and I couldn't be happier with the results. The crew was very professional from start to finish. They arrived on time, completed the job as promised and cleaned up afterwards. The quality of the work is excellent. It's clear they take pride in their work. I highly recommend PVI Group to anyone looking for reliable, skilled professionals."

Gail F on October 2025

Avatar for Heating & Cooling Certified Mechanic

Heating & Cooling Certified Mechanic

Po
4.97(
32
)
•Approved Pro

Heating & Cooling Certified Mechanic

Po
4.97(
32
)
•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

6800 Martin Ave
4.97(
61
)
•Approved Pro

Bamford Plumbing and Heating Inc

6800 Martin Ave
4.97(
61
)
•Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
2009 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 Chimney Experts

Chimney Experts

681 John Fitch Blvd Unit 16P,
4.82(
67
)
•Approved Pro

Chimney Experts

681 John Fitch Blvd Unit 16P,
4.82(
67
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
2002 years of experience

Chimney Experts is a trusted provider of comprehensive chimney services for homeowners. Our team of experienced professionals takes pride in ensuring the safety and functionality of your chimney. Whether you need chimney cleaning, inspections, repairs, maintenance, or installations, we have you covered. Safety is our utmost priority. We fully understand the potential hazards associated with chimneys and strictly adhere to safety regulations. Our team is well-trained to implement necessary precautions, guaranteeing a safe and secure chimney operation for your home. What sets us apart is our commitment to personalized service. We know that each chimney has unique requirements, and we take the time to understand your specific needs. Whether it's routine maintenance or complex repairs, our experts offer tailored solutions that meet your chimney's demands, ensuring optimal performance. At Chimney Experts, we prioritize quality workmanship. We use top-of-the-line tools and materials to deliver lasting repairs and installations. Our team of skilled technicians stays up-to-date with industry practices, ensuring that every project is completed to the highest standards. Customer satisfaction is our ultimate goal. We value your time, and our reliable and punctual service reflects our commitment to meeting your needs. When you choose Chimney Experts, you can expect thorough and efficient service that leaves your chimney in excellent condition. If you're in need of superior chimney services, trust Chimney Experts. With our expertise, attention to detail, and dedication to customer satisfaction, we provide the best solutions for all your chimney maintenance and repair needs. Contact us today to schedule an appointment and experience the Chimney Experts difference for yourself.

"Al came out initially on time (early actually!) was exceptionally professional and gave a tiered quote on work that "needs" to be done and "could" be done with fair pricing. We scheduled the work for a later date and Al returned and did a fantastic job! He was punctual (again) and efficient-completing all the agreed upon work in a timely manner. He also plugged a hole in the back of our fireplace we didn't know about until we removed the wood burning stove and filled extra cracks on the chimney after capping it. I would definitely hire him again and have even referred him to some friends and relatives... 5+ stars from a very happy customer!"

Stephen R on October 2025

Chimney Experts is a trusted provider of comprehensive chimney services for homeowners. Our team of experienced professionals takes pride in ensuring the safety and functionality of your chimney. Whether you need chimney cleaning, inspections, repairs, maintenance, or installations, we have you covered. Safety is our utmost priority. We fully understand the potential hazards associated with chimneys and strictly adhere to safety regulations. Our team is well-trained to implement necessary precautions, guaranteeing a safe and secure chimney operation for your home. What sets us apart is our commitment to personalized service. We know that each chimney has unique requirements, and we take the time to understand your specific needs. Whether it's routine maintenance or complex repairs, our experts offer tailored solutions that meet your chimney's demands, ensuring optimal performance. At Chimney Experts, we prioritize quality workmanship. We use top-of-the-line tools and materials to deliver lasting repairs and installations. Our team of skilled technicians stays up-to-date with industry practices, ensuring that every project is completed to the highest standards. Customer satisfaction is our ultimate goal. We value your time, and our reliable and punctual service reflects our commitment to meeting your needs. When you choose Chimney Experts, you can expect thorough and efficient service that leaves your chimney in excellent condition. If you're in need of superior chimney services, trust Chimney Experts. With our expertise, attention to detail, and dedication to customer satisfaction, we provide the best solutions for all your chimney maintenance and repair needs. Contact us today to schedule an appointment and experience the Chimney Experts difference for yourself.

"Al came out initially on time (early actually!) was exceptionally professional and gave a tiered quote on work that "needs" to be done and "could" be done with fair pricing. We scheduled the work for a later date and Al returned and did a fantastic job! He was punctual (again) and efficient-completing all the agreed upon work in a timely manner. He also plugged a hole in the back of our fireplace we didn't know about until we removed the wood burning stove and filled extra cracks on the chimney after capping it. I would definitely hire him again and have even referred him to some friends and relatives... 5+ stars from a very happy customer!"

Stephen R on October 2025

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Heating and Air Conditioning questions, answered by experts

If your AC refrigerant is low, you may notice that the unit takes longer than usual to cool your home or that your energy bills are higher. You may even feel a warm breeze coming from the vents when the AC refrigerant is low. Don’t attempt to check refrigerant levels yourself. Only certified AC repair pros should check and refill refrigerant.

To make the most out of your AC, consider implementing the following best practices: 

  • Choose the right size AC for your home to ensure your unit runs as efficiently as possible.

  • Choose a window with shade, as direct sunlight can cause your AC unit to overheat. 

  • Clean or replace the filter at least every two months. 

  • Inspect the AC’s fan and straighten it if necessary. 

  • Discontinue use immediately if you suspect a malfunction, as running the AC while broken can lead to significant issues. 

  • Turn off (or adjust the temperature) when you leave the house.

No. Evaporator coils are designed to work with specific refrigerant types, and they are rated by what kinds of refrigerant they use. It’s indicated with an “R” code. It’s important to match your evaporator coil and refrigerant or your system will not work properly. An AC technician can tell you what type of refrigerant your system needs and what evaporator coils will work with it.

While personal preferences widely vary, sleep experts say the best temperature for sleeping is between 60 and 67 degrees Fahrenheit rather than 78. If you do choose to sleep with your AC unit tuned to 78 degrees, you might want to use only a sheet or light blanket rather than a comforter. You might also consider installing a window unit in your bedroom so that you can be cooler in bed without wasting energy cooling the whole house.

Traditional central air conditioning systems require ductwork to circulate air throughout the home. Alternatively, you can add air conditioning with a mini-split ductless air conditioning system, which can be just as energy efficient as a central air conditioner. This type of system consists of two units–an outside unit that holds the compressor and condenser and an indoor unit that holds an air-handler. With multi-zone ductless systems, there are multiple indoor air handlers tied to a single outdoor compressor/condenser, allowing the system to cool multiple rooms.

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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