How often does AC need Freon?

• <div><p>Freon circulates through your AC unit in a closed loop, so ideally, all of it should remain inside your system and never need to be replaced. However, if your AC starts leaking Freon (which is common), you’ll need to top it up. Known as an AC recharge, the <a href="https://www.angi.com/articles/home-ac-recharge-cost.htm">cost of adding refrigerant to your air conditioner</a> depends on the size and type of the AC unit, as well as the type of refrigerant.</p></div>

Do you have to vent all portable air conditioners out a window?

• <div><p>No. With a ventless portable AC system, you don’t need to vent anything out the window—but it will be harder to circulate the hot air from the room without one, so you’ll need to come up with another solution, like placing a fan near a warm spot and facing it towards and open water to push the hot air out.</p></div>

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4.2
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Verified Reviews for Heating And Air Conditioning Service pros in Hollidaysburg, PA

*The Angi rating for Heating And Air Conditioning Service companies in Hollidaysburg, PA 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 Hollidaysburg, PA 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 12, 2025

Reviewed in August 2024
Dominic Noble was excellent to install our new furnace and air conditioning system. He was very professional and wonderful to talk to. He was very competitive with his prices and took pride in doing the work to the highest standards. I would highly recommend him to others.
Noble Heating and Cooling, LLC
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Reviewed in June 2024
Matt installed a new ac for us in a very timely manner. He got us a bid the same day he came out to look at our old unit. The install was quick and seamless. Good price, quality work. I definitely recommend him for all of our family and friends.
Stadelman Service and Installation
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Reviewed in January 2024
charged 500.00 labor for 1 hour and 20 minutes of simple installaion/replacement of water heater.
Cummings Plumbing & Excavating
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Reviewed in July 2022
He was a very nice you man. He found the problem quickly and and the work was done quickly. He came on a very hot Saturday afternoon. I was very happy with the work. and that I got the Air conditioning was fixed!
Hammer Heating & Air Conditioning
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Reviewed in August 2016
I would highly recommend Gosnell Heating for any residential heating or cooling system install or maintenance. Todd Gosnell installed my HVAC system in my home back in 2013, and has returned for annual check-ups since then. They are professional, responsive and very cost competitive- if you are...
GOSNELL HEATING
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Reviewed in September 2014
As above. A new electric furnace was installed, along with an air conditioner additional duct work and pipes had to be replaced and extended to the back bedrooms. Jay and fellow workers went out of their way to make sure we were satisfied with the work and met our needs. They were...
Jed Heating & Cooling Inc
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Reviewed in July 2013
Signature Services has been servicing our furnace, air conditioner and hot water heater for over 5 years and we are pleased with everything.
Signature Services Heating & Cooling
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Reviewed in May 2013
So I called Smithmyer's because there was a service tag on our Heating/AC unit in our new home. They said our pipes were frozen from the unit working so hard. They allowed the melted water to run all over our circuit board within the unit, rendering it useless. They took no responsibility for...
Smithmyer Plumbing & Heating LLC
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Reviewed in April 2013
They were very professional and easy to work with. They were here every day at the same time, and worked continuously until the whole job was done. They installed the air conditioning system in the attic, ductwork from the attic down through closets, installing air conditioning vents in the...
BUCHANAN-SUSICK HEATING & AC
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Reviewed in July 2011
My AC unit stopped working and I had called a company that I saw advertised on TV. The company that came out first, the one from TV, said the AC unit was too old and wasn't repairable and needed replaced. I then called Gillock Heating and AC. They not only came the same day that I called,...
GILLOCK HEATING & AIR COND
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Find Heating and air conditioning pros in Hollidaysburg

M & D Handyman Services

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M & D Handyman Services

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No jobs to small we'll do them all👍

I specialize in the automation industry as a Field Service Technician. Electrical problems are my specialty and automation is my passion. I’m always looking for new technologies and how to implement them in our daily life’s. From smart device installations to basic home appliances repairs. Anything and everything electric is welcomed !!

GSA

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GSA

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Free onsite estimate

Handyman

Vinglas HVAC

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Vinglas HVAC

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Hi this is Montana vinglas I have been in the hvac field for 4 years I do residential work on all your hvac needs.

Custers Contracting

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Custers Contracting

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11 years of experience

Furnace installs Heat pump and air conditioning units Electrical work Plumbing Blower door tests My name is Jacob I have been doing this since 2014. Family oriented business with only two other guys.

SJH Handyman Service Inc.

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SJH Handyman Service Inc.

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Free onsite estimate

I do genaral handyman service and roofing plumbing and electrical repairs and smokes repairs and gutter repair and much more been in business for 5 years

MGM Mechanical Inc

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MGM Mechanical Inc

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8 years of experience

We are a full-service HVAC company serving residential and commercial customers in the greater Harrisburg PA area, including Liverpool, Selinsgrove, and Mifflintown (we will travel within a 2-hour radius of our location in Liverpool, PA). Above all, our goal is to offer prompt, affordable, and trustworthy HVAC services to our residential and commercial customers. Our skilled technicians specialize in servicing and installing mini-split heating and cooling systems, heat pumps, gas furnaces, boilers, oil furnaces, central air units, chillers, VRF systems, rooftop units, 911 or utility towers, and hot water heaters. One way to keep your HVAC system running efficiently and reliably is to have regularly scheduled maintenance. We offer money-saving preventative maintenance plans for heating and cooling systems. Visit our website or call us to learn more. As a Diamond Elite Contractor for Mitsubishi and a Comfort Care Dealer for American Standard, we are able to offer product warranties, guarantees and rebates that other HVAC companies in our area often cannot. We are also members of Local 520 union for Plumbers, Pipefitters, and HVACR Technicians based in Harrisburg. Visit our website or call us at 717-543-3034 to schedule service or to request a quote. 24/7 emergency services are available!

TD ENERGY EXPERTS, LLC

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TD ENERGY EXPERTS, LLC

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7 years of experience

TD Energy Experts, LLC. is a full service Mitsubishi Ductless Heating and Cooling Diamond Contractor. With TD all of our customers receive a 12 yr Compressor/Parts and 12 yr labor warranty. That's one reason our customers choose to do business with us "Why settle for a field goal when you get a TD with TD Energy Experts"!

Gater Mechanical LLC

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Gater Mechanical LLC

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Free onsite estimate

Gater Mechanical LLC is a reliable and professional HVAC Contractor in Newville, PA. If you need HVAC Repair or any other HVAC Service, this is your company ! Visit our website or call us now at (717) 696-6087 ! Bloserville, PA; Entlerville, PA;Plainfield, PA; Carlisle, PA; Newville,PA

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Heating and Air Conditioning questions, answered by experts

Freon circulates through your AC unit in a closed loop, so ideally, all of it should remain inside your system and never need to be replaced. However, if your AC starts leaking Freon (which is common), you’ll need to top it up. Known as an AC recharge, the cost of adding refrigerant to your air conditioner depends on the size and type of the AC unit, as well as the type of refrigerant.

Yes, through thorough cleaning and inspection, optimizing functionality, and reducing energy use.

No. With a ventless portable AC system, you don’t need to vent anything out the window—but it will be harder to circulate the hot air from the room without one, so you’ll need to come up with another solution, like placing a fan near a warm spot and facing it towards and open water to push the hot air out.

Turning off your AC may temporarily stop your unit from leaking water unless the leak is from a thawing coil that continues to thaw after the system is shut off. Regardless, it helps to discontinue use of the unit if it has a leak in order to figure out what’s causing the issue.

Swamp coolers cost approximately 50 percent less to install than central air conditioners and cost less to run. Operation costs depend on the size of the unit and home, your climate, utility rates in your area, and the system’s efficiency. Swamp coolers use 15 to 35 percent less power than air conditioners.

The Hollidaysburg, PA homeowners’ guide to heating and air conditioning services

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