How Much Does Home AC Freon Cost? (2025)

AC refrigerant is the liquid that allows air conditioners to cool the air, and Freon is a branded type of AC refrigerant. It’s such a common brand name that it’s become synonymous with the product, much like Kleenex or Xerox.

Over time, refrigerant can leak out of an air conditioning system, keeping it from doing its job. A Freon recharge is a very common AC repair, though if you need one, there’s probably also a leak somewhere that needs repairing. The average refrigerant refill cost is $200–$640 for a central AC unit, though fixing the leak may cost more.

How Much Does a Home AC Recharge Cost on Average?

A simple refill for a window-mounted air conditioner is at the low end of the cost spectrum. A recharge and major leak repair for a 4-ton central AC are at the high end. The following average reflects the approximate cost of a recharge and minor leak repair for a 2-ton AC unit requiring 5 pounds of refrigerant.

What Does Home AC Freon Cost Per Pound?

Different types of refrigerant have different costs by weight. They also have slightly different chemical makeups and are named with an R followed by a number. You will need to use whichever type your system is built to run on. R-410A refrigerant, sometimes sold under the brand name Puron, is the most common for home AC systems and refrigerators made after 2010. Other R-400 series refrigerants are used in cars or commercial applications.

R-22 Freon used to be the most popular type, but because it’s a chemical that depletes the ozone layer, it is being phased out in the United States under Section 608 of the Clean Air Act. It’s no longer produced or imported. You may still be able to get R-22 refrigerant for older systems, but it’s very expensive and difficult to find and most R-22 systems can be converted to run on other types. If not, you will have to replace your old air conditioner.

Here are the material and total installation costs for common refrigerants.

What Does Freon Cost by AC Unit Size?

The size of an air conditioner is measured in tons. This doesn’t refer to the unit’s weight, but rather how much air it can cool in a certain time period. As a general rule, air conditioners need about 2–4 pounds of refrigerant for every ton of cooling power. Below is how much it will cost to refill differently-sized AC units with the most common household refrigerant, R-410A.

How Much Does Freon Cost by Type of HVAC Unit?

Different HVAC system types come with different refrigerant costs, mostly depending on the system size. As you might expect, air conditioners that cool an entire house will cost much more to recharge than a window unit.

Central air conditioners cool entire homes using a network of ducts that carry air to multiple rooms, and the best air conditioner brands can be expensive to replace, which is why proper refrigerant is important. They’re composed of two units: an indoor air handler and an outdoor condenser. To work, the refrigerant must run through both units. Remember that central AC systems take about 2–4 pounds of Freon for every ton of cooling. Since most home air conditioners have a size of about 1.5–2 tons, they will cost $150–$600 to fully recharge.

A heat pump works differently than an air conditioner, but it still requires refrigerant to run. These systems move hot air outdoor in the summer and indoor in the winter. Refrigerant for heat pumps is measured approximately the same way as for central AC units—2–4 pounds per ton of cooling—so the Freon refill cost is similar at $150–$600. If you have to replace a heat pump, the cost will average $5,000.

Mini-split systems are smaller than central air conditioners, and they’re usually set up to control temperature in individual rooms. They don’t require ductwork, so they’re easier to install, but they do have both an indoor and outdoor unit. Since they’re smaller than central AC systems, they require less refrigerant. Depending on the system size, Freon costs for mini-splits may range from $100–$300.

Used to cool only one room at a time, window air conditionerscontain the air handler and condenser in a single unit. Simple to install and maintain, they are the smallest type of AC system and thus require the least refrigerant. Recharge costs for window units can range from $75–$240.

How Much Does Freon Recovery and Disposal Cost?

If your air conditioner has had a refrigerant leak, part of the repair costs will go to recapturing and properly disposing of the Freon spill, which is an environmental pollutant. Older refrigerants like R-22 are chemicals called chlorofluorocarbons, or CFCs, that travel into the atmosphere and contribute to global warming. More recent alternatives like R-410A are hydrofluorocarbons (HFCs) that still contribute to climate change, albeit to a lesser extent.

The reclamation fee for a Freon leak is usually built into the refill price, but if you need to pay for it separately, it typically costs $30–$100.

What Factors Impact Home AC Recharge Costs?

In addition to the HVAC system size and type, here are some other factors that help determine project cost.

Alternatively, an AC service technician may find that the real issue isn’t a refrigerant leak. Here are some other common problems that cause air conditioners to stop working (and the cost to fix them).

If your air conditioner is old, it may need major parts replaced, such as the evaporator coil which will cost $600–$2,400 or the compressor ($800–$3,000). Since replacement costs for these parts are so high, homeowners should consider replacing the air conditioning unit entirely if it breaks. Installing a new AC system can cost anywhere from $2,500–$8,000, depending on the unit’s size.

Should You DIY vs Professional Freon Recharge?

According to EPA regulations, only licensed HVAC technicians can handle Freon and other refrigerants, which means this isn’t a DIY job.

Professional Home AC Freon Replacement

As of 2018, you must have a license and training to legally purchase or handle refrigerant, or recover any refrigerant spillage. Although new, more environmentally friendly alternatives are being tested, the ones in use still pose a threat to human health and the ozone layer. A professional will have the knowledge and equipment to safely handle and dispose of these chemicals. They’ll ensure that any leaks get fixed to prevent future spills. Pros will also usually offer a warranty or guarantee on their work.

DIY AC Freon Replacement

You can’t legally purchase refrigerant in the US without an HVAC certification. In fact, you may face a fine of up to $10,000 for illegally handling these chemicals. Thus, it’s imperative to hire a professional for jobs involving refrigerants.

Is It Worth Getting Your AC’s Freon Recharged?

When your air conditioner stops working, it’s time to call a professional HVAC technician. We recommend getting estimates from at least three providers before making your choice. If the problem with your AC is a refrigerant leak, you’ll likely need to have it fixed in addition to a Freon recharge. Some HVAC professionals include minor leak repair in the recharge cost, but major leaks will often cost more. This can be expensive, but it’s worth it to have a working air conditioner.

FAQ About Recharging AC Freon

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