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TRUSTED BY CABIN JOHN, MD HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon2.7k+
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Cabin John

Avatar for Pipeworks Plumbing, Heating, and Air

Pipeworks Plumbing, Heating, and Air

4.88(
580
)
Approved Pro

Pipeworks Plumbing, Heating, and Air

4.88(
580
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
9 years of experience

Pipeworks Plumbing and Services, is a rapidly growing and local Heating, Air Conditioning, and Plumbing company with a focus on residential and light commercial needs. In fact, we are more than just an HVAC company - "we are in the people business servicing Heating and Air Conditioning needs". We work hard to build trust and maintain an exceptional experience for our customers building life-long relationships one day, one customer at a time.

"Chase did a great job repairing a failed pipe that splashed water into our home. He carefully examined every aspect of the problem, determined what needed to be done, fixed the problem and tested the pipes to make sure everything worked -- and all of this at a very reasonable price. We've been using PipeWorks for several years to deal with plumbing issues and they've provided great service at reasonable rates. We'll continue to contact them when we have a plumbing problem."

Bill W on May 2025

Pipeworks Plumbing and Services, is a rapidly growing and local Heating, Air Conditioning, and Plumbing company with a focus on residential and light commercial needs. In fact, we are more than just an HVAC company - "we are in the people business servicing Heating and Air Conditioning needs". We work hard to build trust and maintain an exceptional experience for our customers building life-long relationships one day, one customer at a time.

"Chase did a great job repairing a failed pipe that splashed water into our home. He carefully examined every aspect of the problem, determined what needed to be done, fixed the problem and tested the pipes to make sure everything worked -- and all of this at a very reasonable price. We've been using PipeWorks for several years to deal with plumbing issues and they've provided great service at reasonable rates. We'll continue to contact them when we have a plumbing problem."

Bill W on May 2025


Avatar for GAC Services

GAC Services

4.86(
268
)
Approved Pro

GAC Services

4.86(
268
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
55 years of experience

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025


Avatar for Sila Heating, Cooling and Plumbing

Sila Heating, Cooling and Plumbing

4.75(
1,971
)
Approved Pro

Sila Heating, Cooling and Plumbing

4.75(
1,971
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
36 years of experience

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"They charged $98 to come give me an estimate for swapping our a shower valve cartridge, which was fine, but the pricing they provided was completely unreasonable, $1,000. They were unwilling to provide any detail for the price. I ended up buy the part myself for $30 and replaced it in 30 minutes."

Tom A on October 2024

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"They charged $98 to come give me an estimate for swapping our a shower valve cartridge, which was fine, but the pricing they provided was completely unreasonable, $1,000. They were unwilling to provide any detail for the price. I ended up buy the part myself for $30 and replaced it in 30 minutes."

Tom A on October 2024


Avatar for Three Brothers Services, LLC

Three Brothers Services, LLC

4.97(
57
)
Approved Pro

Three Brothers Services, LLC

4.97(
57
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 years of experience

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! Licensed & Bonded Maryland Home Improvement #141947 Maryland Master Electrician #14130 Virginia Master Electrician #2710073038

"Three Brothers is the best. We have hired Saul and team for several electrical projects both big and small over the past few years. They have never disappointed. Highly recommend for any electrical needs."

David G on July 2023

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We have many years of experience to give you confidence that we are your number one choice for your next home project. You will find us to be competitively priced with close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! Licensed & Bonded Maryland Home Improvement #141947 Maryland Master Electrician #14130 Virginia Master Electrician #2710073038

"Three Brothers is the best. We have hired Saul and team for several electrical projects both big and small over the past few years. They have never disappointed. Highly recommend for any electrical needs."

David G on July 2023


Avatar for Presidential Heating & Air Conditioning

Presidential Heating & Air Conditioning

4.74(
409
)
Approved Pro

Presidential Heating & Air Conditioning

4.74(
409
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
43 years of experience

You and your family deserve to receive the best care and the best service. Not every heating & A/C company gives you the quality people and care that Presidential does. We offer 40 Years of Award-Winning Quality People, Quality Installation, and Quality Service. Delivering this quality service and care for your home is our commitment to you! Family-owned and operated, Presidential specializes in residential and light commercial service and installation throughout MD, VA & DC. Ask us about our system replacement specials and The Advantage Maintenance Plan for preferred VIP service. Presidential has been awarded the Carrier Factory Authorized Dealer Award and is a member of the ACCA (Air Conditioning Contractors of America) and the Quality One service network.

"We originally found found Presidential Heating and Cooling on Angie's List at least 15 years ago. We liked the company immediately. We have been on a contract for at least 10 years. They installed our current furnace. All the employees are great. James came to service our furnace today. We have never had a problem with any of the techs who have come to our house. The office staff is great also."

William K on December 2025

You and your family deserve to receive the best care and the best service. Not every heating & A/C company gives you the quality people and care that Presidential does. We offer 40 Years of Award-Winning Quality People, Quality Installation, and Quality Service. Delivering this quality service and care for your home is our commitment to you! Family-owned and operated, Presidential specializes in residential and light commercial service and installation throughout MD, VA & DC. Ask us about our system replacement specials and The Advantage Maintenance Plan for preferred VIP service. Presidential has been awarded the Carrier Factory Authorized Dealer Award and is a member of the ACCA (Air Conditioning Contractors of America) and the Quality One service network.

"We originally found found Presidential Heating and Cooling on Angie's List at least 15 years ago. We liked the company immediately. We have been on a contract for at least 10 years. They installed our current furnace. All the employees are great. James came to service our furnace today. We have never had a problem with any of the techs who have come to our house. The office staff is great also."

William K on December 2025


Avatar for L&V HANDYMAN AND REMODELING

L&V HANDYMAN AND REMODELING

5.00(
28
)
Approved Pro

L&V HANDYMAN AND REMODELING

5.00(
28
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

We have the experience and dedication to get the job done right! Specializing in handyman services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"I have hired this company for a number of things, including doors, floors, backsplash, etc. he is very fair with his prices and very good with his work. I would hire him again if I need anything done, and I totally approve of everything he has done for me and encourage others to hire him."

Bernie M on August 2025

We have the experience and dedication to get the job done right! Specializing in handyman services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"I have hired this company for a number of things, including doors, floors, backsplash, etc. he is very fair with his prices and very good with his work. I would hire him again if I need anything done, and I totally approve of everything he has done for me and encourage others to hire him."

Bernie M on August 2025


Avatar for Simply Home Service, LLC

Simply Home Service, LLC

4.98(
29
)
Approved Pro

Simply Home Service, LLC

4.98(
29
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
5 years of experience

I have been serving the Maryland, D.C. and Virginia area for over 20 years with my experience. My company is young, but my skills are old. Simply Home Service LLC is licensed and insured. We're dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. Call us now at 301-518-9977 or visit our website at www.simplyhomeservices.com

"I appreciate the experience, expertise, knowledge and integrity of this business. The home I live in is very old and I am a renter with very little knowledge of HVAC services. Sean, the serviceman, explained clearly what the issue was with the furnace and even provided advice regarding CO detectors, that I should have more than one. I am very grateful for the service he provided and I definitely recommend his company."

Tracy S on January 2024

I have been serving the Maryland, D.C. and Virginia area for over 20 years with my experience. My company is young, but my skills are old. Simply Home Service LLC is licensed and insured. We're dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. Call us now at 301-518-9977 or visit our website at www.simplyhomeservices.com

"I appreciate the experience, expertise, knowledge and integrity of this business. The home I live in is very old and I am a renter with very little knowledge of HVAC services. Sean, the serviceman, explained clearly what the issue was with the furnace and even provided advice regarding CO detectors, that I should have more than one. I am very grateful for the service he provided and I definitely recommend his company."

Tracy S on January 2024


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
16 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 Mr. Handyman of South Montgomery County

Mr. Handyman of South Montgomery County

4.60(
342
)
Approved Pro

Mr. Handyman of South Montgomery County

4.60(
342
)
Approved Pro
Customers say: Super punctual
20 years of experience
Emergency services offered

8 employees. No subs. Cost is determined by the hour. Travel charges may apply. May contact through email. See web for additional service areas. Additional DBAs - New Frontier Home Services Inc, Mr Handyman International LLC, Mr Handyman. Additional phone numbers - (800) 289-4600, (866) 231-5643. Additional email – [email protected]. Award winning.

"Never finished the job. The handyman they sent was competent and hard-working, and the prices were reasonable, but working with the office staff to get him out to my home was difficult and unpleasant. My job was a 2-3 day job (partly because plaster needs time to cure, paint needs to dry, etc.), but they just wouldn't schedule him to finish it. The office staff were hostile and blamed me for their scheduling difficulties, as though I was the problem. They've cancelled their last two scheduled appointments at the last minute and are unable to give me any more dates."

James M on September 2025

8 employees. No subs. Cost is determined by the hour. Travel charges may apply. May contact through email. See web for additional service areas. Additional DBAs - New Frontier Home Services Inc, Mr Handyman International LLC, Mr Handyman. Additional phone numbers - (800) 289-4600, (866) 231-5643. Additional email – [email protected]. Award winning.

"Never finished the job. The handyman they sent was competent and hard-working, and the prices were reasonable, but working with the office staff to get him out to my home was difficult and unpleasant. My job was a 2-3 day job (partly because plaster needs time to cure, paint needs to dry, etc.), but they just wouldn't schedule him to finish it. The office staff were hostile and blamed me for their scheduling difficulties, as though I was the problem. They've cancelled their last two scheduled appointments at the last minute and are unable to give me any more dates."

James M on September 2025


Avatar for JDL HVAC & Plumbing Services

JDL HVAC & Plumbing Services

4.63(
879
)
Approved Pro

JDL HVAC & Plumbing Services

4.63(
879
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
15 years of experience

When it comes to great service, customers know they can count on JDL HVAC Services, for all of their home comfort needs. We don't guess and send quotes before the time of service. We quote all repairs or estimate for system replacement, after the system has been evaluated accurately by one of 5 Star Technician. That way we are able to give you an accurate and competitive quote or estimate, with no surprises. We are transparent with our customers, letting them know the best option for their comfort needs. Discover why more and more new customers choose JDL HVAC Services every year. You can be sure of quality heating and cooling solutions from repairs, too new system installations, that will take care of all your HVAC needs. We are fully licensed and insured, so you can rest assured that you are getting the best of the best working in your home.

"Quick response. Clear explanation. Highly recommend "

Derek A on June 2025

When it comes to great service, customers know they can count on JDL HVAC Services, for all of their home comfort needs. We don't guess and send quotes before the time of service. We quote all repairs or estimate for system replacement, after the system has been evaluated accurately by one of 5 Star Technician. That way we are able to give you an accurate and competitive quote or estimate, with no surprises. We are transparent with our customers, letting them know the best option for their comfort needs. Discover why more and more new customers choose JDL HVAC Services every year. You can be sure of quality heating and cooling solutions from repairs, too new system installations, that will take care of all your HVAC needs. We are fully licensed and insured, so you can rest assured that you are getting the best of the best working in your home.

"Quick response. Clear explanation. Highly recommend "

Derek A on June 2025

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Heating and Air Conditioning questions, answered by experts

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

Freon will go in the refrigerant lines near the back of your AC unit. Look for small ports with caps on a thin copper line—the Freon goes into those ports. You are best off hiring a licensed HVAC professional who can complete the job safely and correctly.

A new HVAC system combines components to control indoor temperature and air quality. Features include a furnace or heat pump and an air conditioner or evaporator coil, depending on the climate requirements. It also involves a network of ductwork for air distribution, a thermostat for temperature regulation, and electrical connections. Air purifiers or humidifiers can be integrated to improve indoor air quality.

Some states require special licenses for HVAC professionals, but most don’t. However, even if there is no state requirement for HVAC licensing, local requirements might exist. It’s always a good idea to check if HVAC technicians need to be licensed in your area and then Angi’s contractor license lookup tool to confirm that the contractor you’re hiring holds the necessary licenses. Additionally, you should always ensure the company you’re hiring is fully insured to avoid potential lawsuits if a technician gets injured on your property.

There are ways to detect a refrigerant leak with several different testing methods. However, most homeowners can figure out something’s wrong with their AC unit by noticing these common signs:

  • Ice forming on the evaporator coil

  • Water leaks near the AC unit

  • Frequent hissing sounds

  • Increased electric bills

  • Unit takes longer than usual to cool

  • Unit is blowing hot air

The Cabin John, 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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