How often do you need to add Freon to an AC?

• <div><p>Good news: Your AC system doesn’t need Freon (a popular refrigerant) added regularly, if ever. Freon only needs to be added when there’s a refrigerant leak; however, it’s not uncommon for a gradual leak to occur every 5 to 15 years. Signs of a refrigerant leak include higher utility bills, increased humidity in the house, weakened AC performance, and a hissing sound from the system.</p></div>

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TRUSTED BY EAST NEW MARKET, MD HOMEOWNERS

4.5
Average homeowner rating
150
Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in East New Market, MD

*The Angi rating for Heating And Air Conditioning Service companies in East New Market, 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 East New Market, 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 15, 2025

Reviewed in July 2024
Very knowledgeable and professional owner and staff, fast and reliable, very pleased with our new AC unit/heater and maintenance. Also installed a new mini split system in my sunroom. Very happy with Top Flight
Top Flight Heating & Air
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Reviewed in August 2023
Mike's HVAC is a 5 STAR company who does 5 STAR work. They put in my heating and A/C system in record time. They arrived when they said they would. The team that did the work was awesome! I would HIGHLY recommend them to anyone. Mike is a man of his word. He will NOT nickel and dime...
Mike's HVAC, LLC
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Reviewed in July 2023
I found myself with my air conditioner not blowing cold air on a sweltering 90 degree July day. I called Generation and explained my situation JOhn and even though it was a Saturday he said they could be there in a few hours. John showed up when they said they would, quickly diagnosed my problem...
Generation Air Conditioning & Heating
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Reviewed in November 2019
Dakota did an excellent job. He cleaned and checked my heating and ac systems. There was some insulation needed on the conduit piping at the air handler. He wrapped it in pipe insulation and even climbed up in the attic and checked the vent boot to make sure it had no leaks! Very professional...
Fogel Services Inc
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Reviewed in July 2017
At one time I had a lot of issues with my HVAC because I had a crawl space and there was a lot of moisture in the crawl space. That had an effect on the moving parts in the heater underneath the house. I was introduced to another company who took out my insulation because I don't need it. It is...
Charles Messina Plumbing, Electrical & HVAC
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Reviewed in April 2017
The system ultimately needed to be replaced because a year later the same problem happened again...and, in good faith, we decided to give American Vet Heating and A/C a second chance to do business with us; however, this time after leaving several messages we never rec'd a call back so we moved...
American Vet Heating & Cooling LLC
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Reviewed in April 2017
They're the ones that installed our new AC and heating so we have service contract with them. We are very happy with them. In a few weeks they are coming for the annual AC check up. We pay an annual fee for the service contract which I think is $175. So both inspections are part of that. We...
Belair Engineering & Service Co Inc
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Reviewed in June 2015
I asked the owner, Peter Berntsen, to replace the fan and condenser motor in my a/c unit after receiving an extremely high estimate from another contractor. I purchased the parts and Mr. Berntsen gave me a date and time for the installation (9am - not a 4 or 5 hour window). Mr. Berntsen...
Koala Enterprises, Inc
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Reviewed in August 2014
I had a heat pump installed. They serviced the A/C. He was polite. They were on time and the customer service was great.
Service Today
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Reviewed in November 2009
I would definitely recommend Oliver Heating & Air Conditioning.
Oliver Heating, Cooling, Plumbing, & Electrical
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Find Heating and air conditioning pros in East New Market

Wells HVAC, LLC

5.00(

)

•Approved Pro

Wells HVAC, LLC

5.00(

)

•Approved Pro

Customers say: Quick response

29 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

"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

Major league hvac

5.00(

)

•Approved Pro

Major league hvac

Customers say: Quick response

Recommended by 100% of Angi 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

"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 & Air-conditioning

Cool Breeze Mini Splits LLC

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Cool Breeze Mini Splits LLC

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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.

Mighty Wagner PC Solutions

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Mighty Wagner PC Solutions

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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.

All Day A/C

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All Day A/C

No reviews yet

Very responsive hvac services. We also do water heaters.

hvac

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hvac

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Hvac cleaning and service

Delaware valley comfort

4.00(

)

Delaware valley comfort

4.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Professional HVAC service. We will respect your home and provide excellent service Booties on every time

"The work was complete to my satiafaction."

Ronald T on July 2022

Professional HVAC service. We will respect your home and provide excellent service Booties on every time

"The work was complete to my satiafaction."

Ronald T on July 2022

Priority Rental

No reviews yet

Priority Rental

No reviews yet

6 years of experience

At Priority Rental, we provide portable and temporary temperature control services throughout all of Maryland, Baltimore, DC and Northern VA area. Our warehouse are always stocked with a variety of new rental units so you can find a customized solution that suits your needs. We specialize in heating, cooling and clean air solutions for construction sites, data centers, warehouses and large events. Featured products include portable AC units, temporary heaters, HEPA air filters, dehumidifiers & more. If you're ever without temperature control, know us before you need us--our emergency services are available 24/7. Our team of temperature experts are dedicated to finding quick solutions that will keep your space at the temperature you need!

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Showing 1-10 of 74

Heating and Air Conditioning questions, answered by experts

No, it's not safe to keep using your unit when it's frozen. Not only can running a frozen unit lead to damage, but it can also potentially overheat, making it a fire hazard. Therefore, it's always best to turn off the AC unit as soon as you notice any ice.

Good news: Your AC system doesn’t need Freon (a popular refrigerant) added regularly, if ever. Freon only needs to be added when there’s a refrigerant leak; however, it’s not uncommon for a gradual leak to occur every 5 to 15 years. Signs of a refrigerant leak include higher utility bills, increased humidity in the house, weakened AC performance, and a hissing sound from the system.

Installing a new AC unit costs $5,850 on average, but costs vary by the make and model, unit size, and unit type. Portable and window AC units cost between $90 and $550, which is significantly less than central or ductless AC systems. You’ll also have to pay for labor.

As mentioned above, not all HVAC Schrader valves are necessarily the same. While the valve core and pin or spring size on Schrader valves used for HVAC are generally similar, the valves are not all universal and interchangeable. The size of Schrader valves varies depending on whether it's used in an air conditioner, bicycle tire, or motor vehicle tire.

Split systems are the most common type of HVAC system. Split systems have two main units: an indoor one and an outdoor one. These units work together to pull in air, heat or cool it, and distribute it throughout your home. Other popular types of HVAC systems include hybrid systems and packaged heating and air systems.

The East New Market, 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.

See all articles

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•
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How Much Does an HVAC Damper Motor Replacement Cost? [2025 Data]
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•
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•
Nov 4, 2025Nov 4, 2025
9 Common Furnace Problems and How to Fix Them
Whether you’ve lost heat or your furnace is making strange sounds, stay calm. Use this guide to determine the source of the problem and your next steps.
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Is your heat pump not blowing hot air? Several factors could be causing this issue, and we dive into seven of the most common heat pump issues.
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11 Boiler Maintenance Tips to Keep Hot Water Flowing Year-Round
No one likes a cold shower or a frigid winter night. Regular boiler maintenance and repair will ensure your appliance stays in tip-top shape. Keep the hot water flowing year-round with these easy tips.