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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon151
    Verified heating and air conditioning services reviews

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

*The Angi rating for Heating And Air Conditioning Service companies in Preston, 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 Preston, 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 November 23, 2025

Find Heating and air conditioning pros in Preston

Avatar for Major league hvac

Major league hvac

5.00(
17
)
•Approved Pro

Major league hvac

5.00(
17
)
•Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
95 local quotes requested

Heating and air conditioning. Sales, service, and installation. 20 yrs of experience in the hvac field. We are an American Standard dealer, but service all brands. Our services range from simple repairs to complete system installs, and duct cleaning. Licensed and Nate certified techs.

"Had a complete HVAC system replacement. Through the whole process, they did what they said they would do and within the time frame that I was told. They responded timely and answered all my questions and concerns along the way. I am an impressed customer and delighted to recommend Major League HVAC."

Joe K on August 2025

Heating and air conditioning. Sales, service, and installation. 20 yrs of experience in the hvac field. We are an American Standard dealer, but service all brands. Our services range from simple repairs to complete system installs, and duct cleaning. Licensed and Nate certified techs.

"Had a complete HVAC system replacement. Through the whole process, they did what they said they would do and within the time frame that I was told. They responded timely and answered all my questions and concerns along the way. I am an impressed customer and delighted to recommend Major League HVAC."

Joe K on August 2025

AJS Climate Solutions LLC

5.00(
2
)
•Approved Pro

AJS Climate Solutions LLC

5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

AJS Climate Solutions 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.

"Top notch very knowable and work hard to get the job done right and quick. I have already referred them to someone who has used them on multiple jobs and is ver happy with them"

Hal C on February 2024

AJS Climate Solutions 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.

"Top notch very knowable and work hard to get the job done right and quick. I have already referred them to someone who has used them on multiple jobs and is ver happy with them"

Hal C on February 2024

Avatar for Ward Plumbing, Inc.

Ward Plumbing, Inc.

4.78(
35
)
•Approved Pro

Ward Plumbing, Inc.

4.78(
35
)
•Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
16 years of experience

Ward Plumbing is east Maryland�s premier plumbing solution. We offer plumbing, heating and gas-fitter services, a two-year warranty on labor and materials, and a 100% customer satisfaction guarantee.

"Fast service..very neat and careful. "

Priscilla T on July 2025

Ward Plumbing is east Maryland�s premier plumbing solution. We offer plumbing, heating and gas-fitter services, a two-year warranty on labor and materials, and a 100% customer satisfaction guarantee.

"Fast service..very neat and careful. "

Priscilla T on July 2025

Wells HVAC, LLC

5.00(
5
)
•Approved Pro

Wells HVAC, LLC

5.00(
5
)
•Approved Pro
Customers say: Quick response
26 local quotes requested
16 years of experience

We're 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. Fully licensed and Insured!

"I’m overly pleased with the work that Wells HVAC provided me. The heating/cooling in my home was antiquated, inefficient & unreliable. However, Michael & his expert-tech remedied those solutions for me. In addition to that; they were punctual in arrival times, they were neat & tidy, and something that stood out to me was their politeness! It feels so good not to be stressed about an unreliable climate & atmosphere in my home now thanks to Wells HVAC. I have, and will continue to highly recommend them to my friends, family, and associates. If you’re on the limb about getting a service done or whom to get it done by… Just call Michael, I promise there will be no regrets or disappointment! "

Christopher P on June 2025

We're 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. Fully licensed and Insured!

"I’m overly pleased with the work that Wells HVAC provided me. The heating/cooling in my home was antiquated, inefficient & unreliable. However, Michael & his expert-tech remedied those solutions for me. In addition to that; they were punctual in arrival times, they were neat & tidy, and something that stood out to me was their politeness! It feels so good not to be stressed about an unreliable climate & atmosphere in my home now thanks to Wells HVAC. I have, and will continue to highly recommend them to my friends, family, and associates. If you’re on the limb about getting a service done or whom to get it done by… Just call Michael, I promise there will be no regrets or disappointment! "

Christopher P on June 2025

Avatar for srm mechanical

srm mechanical

No reviews yet

srm mechanical

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.

Cool Breeze Mini Splits LLC

No reviews yet

Cool Breeze Mini Splits LLC

No reviews yet
Free onsite estimate

We specialize in the installation and maintenance of ductless mini split heating & air condition systems. We outperform traditional HVAC system installers, providing cleaner, correct, and much more professional installations.

We specialize in the installation and maintenance of ductless mini split heating & air condition systems. We outperform traditional HVAC system installers, providing cleaner, correct, and much more professional installations.

Avatar for Mighty Wagner PC Solutions

Mighty Wagner PC Solutions

No reviews yet

Mighty Wagner PC Solutions

No reviews yet
Free onsite estimate

Have you been dreaming about getting the ultimate gaming or art/music/business PC? If so, Mighty Wagner can build it for you. Share the mightiest specs you desire, or ask for the mightiest recommendations, and Mighty will build it for you. Mighty can also build and furnish the mightiest gaming room for one or many, whatever you desire! Email Mighty what it is you desire, and Mighty will contact you to get everything he needs for a quote. I can also fix just about any small electronic or appliance.

Have you been dreaming about getting the ultimate gaming or art/music/business PC? If so, Mighty Wagner can build it for you. Share the mightiest specs you desire, or ask for the mightiest recommendations, and Mighty will build it for you. Mighty can also build and furnish the mightiest gaming room for one or many, whatever you desire! Email Mighty what it is you desire, and Mighty will contact you to get everything he needs for a quote. I can also fix just about any small electronic or appliance.

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Heating and Air Conditioning questions, answered by experts

Most units are designed only to cool the house down to 20 degrees less than the temperature outside. This means that if it’s 99 degrees Fahrenheit out and you’re trying to cool your home down to 65 degrees, you’ll notice your AC is struggling. 

Lower the blinds on all your windows, turn on your ceiling fans, and keep the thermostat at a consistent temperature to help your AC do its job. Investing in an HVAC maintenance plan also helps because pros will come out to inspect and tune up your unit regularly, keeping it in optimal working condition.

There are two main reasons your furnace and AC are turning on at the same time. The first could be that you’re confusing the furnace with the blower. The blower is located in the furnace and will turn on to distribute cool air from the air conditioner through the ductwork in the home. This is normal. If the actual furnace is turning on at the same time as the AC and hot and cool air are coming into the home, it could be a result of incorrect writing to a new thermostat or new systems.

Some of the signs of HVAC issues include rising energy bills, rooms not cooling or heating properly, loud noises when in operation, and signs of condensation. To illustrate, if you’re wondering how to stop condensation on air vents, you’ll need to have your HVAC inspected. 

The difference between a home surge protector and an HVAC surge protector is that an HVAC surge protector is designed to protect the components inside your HVAC unit while a home surge protector is installed near appliances and meant to protect your entire home. There are three tiers of whole-house surge protectors, and they are more expensive to install than HVAC surge protectors.

Yes, having mismatched evaporator and condenser coils in your AC system can lead to serious issues. For instance, it can result in higher monthly energy costs as the system runs longer to compensate for the mismatch. This mismatch can also put extra stress on the system, compromising its efficiency and longevity. 

Along with that, mismatched coils can lead to higher temperatures and humidity levels in the home. What’s more, using coils of different sizes may violate the manufacturer's warranty, as they are designed to work synergistically, and any mismatch could lead to repairs and system failure.

The Preston, 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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