Answers to Common AC Questions

About Direct Cooling

Is Direct Cooling licensed and insured?

Yes. Direct Cooling holds Florida certified air conditioning contractor license CAC1819111 and is licensed and insured. It is also a BBB A+ accredited business.

Do you offer 24/7 emergency AC repair?

Yes. Our dispatch line at (561) 210-7605 is textable and monitored around the clock, and a technician follows up directly, even outside office hours.

What are your office hours?

The office is open Monday to Friday, 8:00 AM to 5:00 PM, and the dispatch line is monitored 24/7 for AC emergencies.

Which cities do you serve?

Boca Raton, Delray Beach, Boynton Beach, Deerfield Beach, Parkland and Coral Springs. Call to confirm coverage for nearby areas.

Which equipment brands do you install?

Direct Cooling is an authorized American Standard Customer Care Dealer and a Rheem Pro Partner.

AC Repair

Why is my AC blowing warm air?

Go outside while the system is calling for cooling and look through the top grille. A still fan with a humming unit usually means a failed capacitor or fan motor. A spinning fan with warm air at the vents points to low refrigerant, a dirty coil or a frozen indoor coil. Turn the system off if you see ice or hear grinding, because running it that way can damage the compressor.

How do I know if my AC capacitor is bad?

Trane lists the common signs: the AC is slow to start or will not start, no cold air while it runs, a humming noise, smoke or a burning smell at the unit, and higher energy bills. Only a meter reading compared with the microfarad rating printed on the capacitor confirms it, and that test belongs to a technician because the part can shock you even with the power off.

Can a clogged drain line stop my AC from working?

Yes. Carrier and Trane both note that many systems have a safety float switch that shuts the AC down when a clogged drain lets the pan fill with water. If the system stopped suddenly on a hot day and you see water in the pan, closet or attic, a clogged condensate line is the first suspect. Clearing the line usually restores cooling the same visit.

Is it normal for my AC to turn on and off every 10 minutes?

No. Carrier says a healthy system runs longer cycles, and American Standard defines short cycling as turning on and off several times within 10 minutes. Replace a dirty filter first. If the cycling continues, the cause is usually thermostat placement or wiring, low refrigerant, a failing electrical part, or a system that is oversized for the house.

Emergency AC Repair

Is Direct Cooling really available 24/7 for AC emergencies?

Yes. The dispatch line at (561) 210-7605 takes calls and texts and is monitored around the clock, and the technician on call follows up directly, including nights and weekends. The office itself is open Monday to Friday, 8 to 5, so scheduling for non-urgent repairs, estimates and maintenance happens during those hours.

Is it faster to text or call when my AC stops working?

Either reaches the same dispatch line. Texting is often better at night because you can send photos of the thermostat, the outdoor unit data plate, the breaker panel and any water at the same time. Those photos let the technician check the model and likely parts before leaving.

Should I keep running my AC if it is blowing warm air?

Not for long. If you see ice on the lines, hear grinding, or the outdoor unit hums while its fan sits still, turn cooling off at the thermostat. American Standard warns that running a system with a frozen coil can do major damage, and a stalled outdoor fan leaves the compressor working without cooling air. If there is no ice and no strange noise, you can leave the fan running to move air while you wait.

My AC stopped after a power outage. What should I do?

Give it a few minutes; many systems have a time-delay relay that holds the compressor off for about three to five minutes after power returns (FPL). If it still will not start, check the AC breaker. If it tripped, wait five minutes and reset it once. If it trips again or the outdoor unit hums without the fan turning, leave it off and call dispatch.

My elderly parent's AC broke and I do not live nearby. What can I do?

Call or text dispatch with the address, gate or community check-in details, and a phone number for whoever can open the door. Ask a neighbor or the community office to check on your parent, since CDC advises checking on at-risk adults at least twice a day in hot weather. If your parent has heat stroke symptoms such as confusion or hot red skin, call 911 first.

AC Installation

How long does AC installation take?

It depends on scope more than on the equipment. A straight swap of a matched outdoor unit and air handler in the same locations is the shortest job. Adding a new stand, replacing the line set, moving the air handler, sealing or replacing ducts, or upgrading the electrical all add time, and some need extra inspections. We confirm the schedule in writing with the estimate.

Can I install an air conditioner myself in Florida?

Palm Beach County does allow owner-builder permits, limited to a residence or building for your own use. Handling refrigerant requires EPA Section 608 certification, so connecting and charging a split system is not a homeowner task. Florida's warranty protection in Statute 559.957 also applies specifically to equipment installed by a licensed Chapter 489 contractor.

Is a bigger AC better for Florida humidity?

No. An oversized system cools the air quickly and shuts off before it removes moisture, which leaves the house cool but clammy and causes short cycling, as American Standard and Carrier both explain. Florida's energy code for new homes caps cooling-only equipment at 1.15 times the calculated load for that reason. The right size comes from a Manual J calculation, not from the old unit's label.

Can I still get an R-410A system installed?

Possibly, while stock lasts. EPA's May 2026 final rule removed the January 1, 2026 installation deadline for R-410A split equipment manufactured before 2025, so remaining inventory can be installed until supply runs out. New production uses A2L refrigerants such as R-454B. We will show you both options and how refrigerant supply might affect future service.

Do I have to register my AC warranty in Florida?

Under Florida Statute 559.957, when a licensed contractor installs the equipment, the manufacturer warranty runs its full term from installation and is not conditioned on registration. We still register it for you, because a registered serial number makes any future claim faster.

Which AC brands do you install?

Direct Cooling is an American Standard Customer Care Dealer and a Rheem Pro Partner, so we install both and quote them side by side with SEER2 ratings and refrigerant type. If you are leaning toward one brand, our American Standard and Rheem pages cover each line in more depth.

AC Replacement

How long does an AC last in Florida?

The U.S. Department of Energy lists a 15 to 20 year life span for central air conditioning, and American Standard says about 15 years is typical but that units may wear out sooner in a hot, humid climate like Florida's. Heat pumps run year round and American Standard puts them at 12 to 15 years. Maintenance, coastal salt exposure and sizing move those numbers more than the brand does.

Can I still repair my R-410A system?

Yes. EPA states technicians can keep servicing existing R-410A systems, including major components, and no federal rule requires replacing one that works. Whether a big repair is worth it depends on the system's age and condition, because HFC supply is expected to lessen over time and large leak repairs on older equipment get harder to justify.

Is my R-22 system illegal to keep?

No. You can keep using an R-22 system as long as it runs. R-22 production and import ended January 1, 2020, so any recharge relies on a shrinking supply of recovered or stockpiled refrigerant. That is why a major failure on an R-22 system is usually the point to price a replacement rather than another repair.

Do I need a permit to replace my AC in Palm Beach County?

Yes. Florida law requires a permit to alter or repair a building system, and an AC change-out is permitted work in Palm Beach County and every city we serve. The contractor should pull it in their own name and schedule the final inspection. Even an emergency change-out must file for its permit by the next business day under the Florida Building Code.

Should I replace the indoor unit along with the outdoor unit?

In most cases, yes. Efficiency ratings belong to a matched indoor and outdoor pair, a new A2L refrigerant system needs a compatible indoor coil, and FPL's AC rebate requires a new system with both units. Replacing only the condenser on an old coil gives up the rated efficiency and can shorten the new unit's life.

Is there still a federal tax credit for a new AC?

Not for systems installed in 2026. ENERGY STAR lists the federal 25C credit for qualifying heating and cooling equipment as available through December 31, 2025. FPL still runs an instant rebate on qualifying high-efficiency systems installed by a participating contractor, so check its current terms before you buy.

How long does an AC replacement take?

Most residential change-outs are finished in one day, from removing the old equipment to starting up the new system. Jobs that add ductwork, electrical upgrades or a new equipment location take longer. The final inspection is scheduled with the county or city after installation, and we confirm the full timeline during the free estimate.

How much does AC replacement cost in Boca Raton?

It depends on system size, efficiency rating, refrigerant, duct condition, electrical work and how hard the equipment is to reach, which is why a number given over the phone is a guess. We give a free, itemized estimate after looking at the home, with the repair option priced alongside so you can compare.

AC Maintenance

How often should AC be serviced in Florida?

Twice a year is the practical standard in South Florida: once in spring before the long cooling season and once in fall. American Standard recommends a spring tune-up for air conditioners and two visits a year for heat pumps, and our systems run most months in humid air that loads the drain and coil year round.

How often should I change my AC filter?

Check it every month, as ENERGY STAR recommends, and change standard filters every 1 to 3 months, as Trane suggests. Homes with pets, allergies, construction dust or a system that runs constantly land at the short end. A thicker or higher-MERV filter may last longer, but ask whether your system can handle it first.

What does an AC tune-up include?

A full tune-up covers the condensate drain and float switch, the indoor and outdoor coils, capacitors and contactor, electrical connections, refrigerant pressures, airflow and the blower, the filter, the thermostat and the outdoor clearance. The important part is measurement: readings are recorded so problems show up as numbers that change between visits, not guesses.

Can I clean my own AC drain line?

Yes, for routine care. With the system off, Carrier describes pouring about a cup of distilled vinegar into the indoor drain access point to slow algae, and a wet/dry vacuum at the outdoor end can pull out a clog. If the line clogs again within weeks, or water reaches the floor or ceiling, call for service.

Does skipping maintenance void my AC warranty?

It depends on the manufacturer and model, so read the warranty certificate for your equipment and keep your service invoices. Under Florida Statute 559.957, a warranty on equipment installed by a licensed contractor runs its full term from installation without depending on registration, but manufacturers can still exclude damage caused by neglect.

Should I turn off my AC when I leave for the summer?

No. UF/IFAS Extension advises keeping the AC set no higher than 85 degrees in an unoccupied Florida home so it keeps removing moisture, and having it serviced, including the condensate line, before you leave. A home closed up with the AC off is how many owners return to musty air and mildew.

Is an AC maintenance plan worth it?

For most homes here, yes. A plan puts both yearly visits on the calendar so they actually happen, and the Direct Cooling membership adds 10 percent off repairs and refrigerant between visits plus priority scheduling. The real savings come from catching a weak capacitor or a slow drain in April instead of during a July breakdown.

Heat Pumps

Do I need a furnace in South Florida?

Most homes do not. NOAA's normals for West Palm Beach show an average January low of 57.9 degrees and no freezing nights, so a heat pump with electric strips as backup covers the short heating season. When a home has a straight AC with electric strips instead, a heat pump is the usual efficiency upgrade at replacement time.

Why did my electric bill spike on a cold morning?

Almost always the backup electric strips. They switch on during defrost, in colder weather, or when the thermostat is raised more than about 3 to 4 degrees at once, and they use far more electricity per unit of heat than the heat pump. Emergency Heat left on after a cold night does the same thing all day.

When should I use emergency heat?

Only when the heat pump itself has failed and you need heat until it is repaired. Emergency heat shuts down the outdoor unit and runs the electric strips alone, which is expensive. If you find yourself switching to it, schedule a service call rather than leaving it on.

Why is my heat pump blowing cold air in winter?

It may be in a defrost cycle, which Trane says usually lasts 3 to 5 minutes and can come with steam from the outdoor unit. If cool air continues well beyond that, or the system seems stuck in cooling mode, the reversing valve, its solenoid or a control may need service.

How long does a heat pump last in Florida?

American Standard puts typical heat pump life at 12 to 15 years and notes that heat pumps can have a shorter life than air conditioners because they run year round. Two tune-ups a year, a clean drain, and protection from salt air near the coast all push toward the longer end.

Is a heat pump worth it over an air conditioner in Florida?

Usually, when you are replacing the system anyway. Both cool the same way with comparable efficiency, and the heat pump heats far more efficiently than resistance strips on the nights you need heat. American Standard notes the cost of the two is very similar, so we price both and let you compare.

Is steam coming from my outdoor unit a problem?

No. Steam on a cool morning is the defrost cycle melting frost off the outdoor coil, and Trane calls it perfectly normal. It should stop within a few minutes. Constant defrost, or ice that keeps building on the coil, is the point to call for service.

Mini Splits and Ductless

Do you repair mini splits too?

Yes. We service and repair ductless systems, including ones we did not install: drainage problems, leaking heads, refrigerant leaks, frozen coils and heads that stop cooling. Text a photo of the outdoor unit's label and describe what the head is doing, and the technician can arrive with the right parts.

Can one outdoor unit serve several rooms?

Yes. A multi-zone system runs several indoor heads from one outdoor unit, and each head has its own control. The trade-off is that every room on that unit loses cooling if the outdoor unit fails, so for one or two rooms, separate single-zone systems are sometimes the more robust choice.

Why is my mini split leaking water?

Trane lists five causes: a dirty filter, a clogged drain line, a damaged drain pan, a refrigerant problem that freezes the coil, and improper installation, such as a head tilted forward or a drain without enough slope. Turn the unit off if water is reaching the wall or floor, clean the filters, and call if it continues.

Why does my mini split smell musty?

Usually moisture and growth on the filter, coil, blower wheel or drain pan inside the head. Trane lists mold, mildew and musty smells among the problems a clogged filter causes. Washing the filters helps, but buildup on the blower wheel and pan needs a professional cleaning that partly dismantles the head.

Do I need a permit to install a mini split in Florida?

Yes. Florida Statute 553.79 requires a permit to install or alter a building system, and a ductless mini split is permitted mechanical work. The licensed contractor should pull the permit in their own name and schedule the inspection. Condo owners usually need association approval as well.

How often should a mini split be serviced?

Trane recommends professional service twice a year for a ductless heat pump, once before cooling season and once before heating season, and says once a year may suffice for a cooling-only system. Between visits, clean the filters every two to four weeks depending on use.

Can I put a mini split in my condo?

Often, yes. The install needs a small penetration through an exterior wall and an approved location for the outdoor unit, so most condo associations must sign off first, and some limit where equipment or condensate lines can go. Share the association's rules with us and we will plan the install around them.

Ductwork

How do I know if my air ducts are leaking?

The common signs ENERGY STAR lists are high summer bills, rooms that are hard to cool, stuffy rooms, ducts in the attic or garage, and kinked flex duct. Other clues are dust streaks around ceiling registers, a coil that gets dirty quickly, and a musty smell when the fan starts. A technician confirms it by measuring airflow and temperature at each register and inspecting the air handler, return plenum and attic runs.

Can I seal ducts with duct tape?

No. ENERGY STAR says never to use duct tape on ducts because it does not last. Joints should be sealed with mastic sealant or metal tape, and connections at registers should be sealed where they meet the ceiling, floor or wall.

Should I close the vents in rooms I do not use?

Usually not. A Lawrence Berkeley National Laboratory study found that closing registers increased energy use because it raised pressure and leakage in the ducts. It also found that closing more than 60% of registers can restrict airflow enough to freeze a cooling coil. If a room is unused, keep its register open and talk to us about whether the duct layout needs adjusting.

Can leaky ducts make my house more humid?

Yes. FSEC research found that duct leaks, especially on the supply side, can depressurize a house and draw humid outdoor air in through the walls and around windows. Return leaks pull hot, moist attic air into the system, which the AC then has to dry out. Sealing the ducts often helps the AC control humidity as well as temperature.

Do you offer duct cleaning?

We focus on duct repair, sealing and replacement rather than duct cleaning. EPA notes that duct cleaning has never been shown to prevent health problems, and that wet or moldy duct insulation cannot be effectively cleaned and should be replaced. If we find contaminated or deteriorated duct sections, we will tell you and quote the repair or replacement.

Will new ducts be tested?

Yes. Under the 2023 Florida energy code, new duct systems, including new ducts installed as part of an alteration, must be sealed and tested for leakage at 25 pascals. Short extensions with less than 40 linear feet in unconditioned space are exempt from testing. We handle the testing requirement when we replace a duct system.

Indoor Air Quality

Do air purifiers help with mold and allergies?

They can help with allergies but they do not fix mold. EPA says several studies with portable HEPA air cleaners found improvements in some allergy and asthma symptoms, though not in every symptom. For mold, EPA is clear that air cleaners and HVAC filters do not address the cause, which is a moisture problem. Fix the moisture and clean the growth first, then filtration helps with what is left.

What indoor humidity should I aim for in Florida?

EPA advises keeping indoor relative humidity below 60%, ideally between 30% and 50%. UF/IFAS Extension warns that humidity above 55% to 60% can lead to mold and bacteria growth. A simple hygrometer tells you where your house sits. If it reads above 60% while the AC is running, the system's sizing, airflow or ducts are worth checking.

Should I run my AC fan on On instead of Auto for better filtration?

In South Florida, usually not without checking first. EPA notes that longer fan run times filter more air but can make humidity control less reliable during the cooling season. In a climate where humidity drives mold risk, that trade-off matters. We can help you weigh filtration against humidity control for your specific system.

Will a MERV 13 filter hurt my AC?

It depends on the system. EPA recommends at least MERV 13 or as high a rating as your system fan and filter slot can accommodate, and says you may need an HVAC technician to determine the highest efficiency that works. A filter that is too dense for the blower or filter rack can restrict airflow. Ask for the system to be checked before moving to a much higher rating.

Do I need my air ducts cleaned for allergies?

Not usually. EPA says duct cleaning has never been shown to actually prevent health problems, and dirt in ducts mostly sticks to duct surfaces. EPA does say ducts with substantial visible mold, vermin, or excessive dust actually blowing out of the registers need attention, and wet or moldy duct insulation should be replaced. We focus on repairing, sealing and replacing ducts, and we will tell you if a section should be replaced.

I live in Boca part of the year. How do I keep the house from getting musty while I am gone?

UF/IFAS advises leaving the AC set no higher than 85 degrees F while the house is empty, so it keeps cycling and removing moisture, and having the system checked a few weeks before you leave. Change the filter and make sure the condensate line is clear before you go. A clogged drain while nobody is home can mean water damage and growth by the time you return.

UV Light Purification

How often do UV lamps need replacing?

About once a year. ASHRAE notes typical rated lamp life is around 9,000 hours and calls annual replacement prudent for lamps running continuously, which is 8,760 hours a year. Honeywell's owner guide also recommends replacing the bulb once a year. The blue glow can continue after UV-C output has faded, so a lamp that looks lit is not proof it is still working.

Will a UV light kill viruses in my home?

Do not count on it. EPA found typical residential UV units do not deliver a high enough dose to kill or deactivate most airborne microorganisms, because air passes the lamp too quickly. EPA says UV does not appear effective as a sole control device. Where UV does work well is on surfaces like the coil and drain pan, which sit in the light continuously.

Does a UV light for AC produce ozone?

It can if the lamp is uncoated. EPA explains that uncoated UV-C lamps emitting at 254 nm and below can produce ozone, so manufacturers apply special coatings such as doped fused quartz to prevent it. Ask for a coated, ozone-free lamp. EPA also advises avoiding any air cleaner that intentionally produces ozone.

Do UV lights help with allergies?

There is no good evidence that they do. EPA found no research showing UV reduces dust mite or mold allergenicity, and notes that dead or deactivated particles can still cause allergic reactions. For allergies, better filtration and moisture control do more. A UV light helps keep the coil clean, which can reduce musty odors from the system.

Can UV light damage my AC system?

UV-C can degrade some plastics, wiring insulation and synthetic filter media over time. Honeywell recommends keeping the lamp at least 3 feet from plastic parts with unknown UV resistance, and ASHRAE suggests shielding organic materials within about 5 feet. Most drain pans are UV-C resistant. Proper placement and shielding prevent most problems.

Will a UV light lower my electric bill?

It might help a little, but we do not promise savings. Field studies in hot, humid climates, including one in Tampa, showed better airflow and heat transfer at UV-treated coils. ASHRAE also says there are relatively few peer-reviewed studies of real-world performance and that cost effectiveness based on energy savings alone is not certain.

Commercial HVAC

Do you work with property managers and HOAs?

Yes. We work with property managers and associations that handle multiple units and buildings, with licensing and insurance documentation available on request. You get one point of contact, written findings and photos after each visit, and a maintenance schedule built around your equipment. Dispatch is monitored 24/7 by call or text at (561) 210-7605.

Do you service and replace rooftop units?

Yes. We install, replace, repair and maintain commercial rooftop units, along with split systems on commercial properties. Change-outs are permitted and coordinated around business hours to limit disruption to tenants. Every replaced unit is set and anchored on its curb, then started up and checked before we leave the roof.

How often should a rooftop unit be serviced?

ASHRAE/ACCA Standard 180 sets quarterly, semiannual and annual tasks for rooftop units. Filters and UV lamps are checked quarterly; belts, controls, P-traps and coils semiannually; contactors, refrigerant pressures, drain pans, curbs and condenser coils annually. In South Florida humidity, the condensate and coil tasks are the ones we watch most closely.

Are rooftop units in Broward held to different rules than in Palm Beach County?

Yes. Broward is part of the High-Velocity Hurricane Zone under the Florida Building Code, with design wind speeds from 156 to 185 mph depending on the building's risk category, while Palm Beach County is not in the HVHZ. In both counties, equipment fastened on rated curbs or stands is deemed to comply with the wind-resistance requirements when properly anchored.

Do EPA leak repair rules apply to my building's AC?

It depends on the equipment. Since January 1, 2026, appliances holding 15 pounds or more of HFC refrigerant must have leaks repaired when the annual leak rate tops 10% for comfort cooling. Residential and light commercial AC and heat pump equipment, which EPA says includes systems for small commercial buildings, is excluded. We confirm which category each unit falls into.

Can you schedule work around our business hours?

Yes. Commercial change-outs are coordinated around business hours to limit disruption, and our dispatch line is monitored 24/7 for breakdowns. Tell us your tenants' hours and any access restrictions when you call, and we will plan the lift, the shutdown and the restart around them.

American Standard

Do I need to register my American Standard system within 60 days in Florida?

No. Florida Statute 559.957 says a manufacturer warranty on an HVAC system installed by a licensed contractor is effective in full on the installation date and may not be conditioned on registration. Registration is still worth doing because it puts your serial numbers on file with American Standard, which speeds up a later claim.

Will my American Standard warranty transfer if I sell my Boca Raton home?

Yes, for sales on or after July 1, 2024. Florida Statute 559.956 transfers the manufacturer warranty to the buyer automatically, continues it as if the buyer bought the system, and bars the warrantor from charging a transfer fee. The remaining term does not get longer.

Do you service American Standard systems you did not install?

Yes. We repair and maintain American Standard equipment whoever installed it, and we work on other brands too. If the system is still under warranty, the claim runs through the servicing dealer, so keep your installation invoice and serial numbers handy.

Can I still buy an American Standard R-410A air conditioner?

Only from remaining inventory built or imported before January 1, 2025. EPA's May 2026 rule lets that inventory be installed until supply runs out, but American Standard's current lineup is R-454B. We will tell you which one a quote uses and what it means for future service.

Rheem

Do I need to register my Rheem AC in Florida?

No. Rheem's own Florida update says registration is no longer required for Florida installations as of July 1, 2024, and Florida Statute 559.957 says a manufacturer warranty may not be conditioned on registration. Keep your invoice with the model and serial numbers.

What happens to the warranty on a Rheem system installed before July 1, 2024?

Rheem says it keeps its original terms. In Rheem's Florida update, a system that had a 5-year warranty stays at 5 years and one with 10 years stays at 10, and those warranties apply to the property for the length of the coverage, not to the person who bought it. Systems installed on or after July 1, 2024 get the longest coverage offered on that model.

Do you service Rheem systems you did not install?

Yes. We repair and maintain Rheem equipment whoever installed it, along with other brands. For warranty parts, the claim runs through the servicing contractor, so have the model and serial numbers from the nameplate ready.

Can my older Rheem R-410A system still be repaired?

Yes. EPA states existing R-410A systems can be repaired for their useful life, including major components like a condensing unit or compressor. EPA also notes HFC supply may lessen over time as the phasedown continues, which is worth weighing on an older system with a leak.

Refrigerant Changes

Do I have to replace my R-410A air conditioner?

No. EPA says homeowners can maintain and repair R-410A systems throughout their useful life, and no federal rule requires replacing a working system. Replacement makes sense when the equipment is worn out or repairs keep stacking up, not because of the refrigerant rules alone.

Can a contractor still install an R-410A system in 2026?

Yes, if the equipment was manufactured in or imported into the U.S. before January 1, 2025. EPA's May 2026 rule, effective July 27, 2026, lets that inventory be installed until supply runs out. Newly manufactured systems must use refrigerant under 700 GWP.

Can I put R-454B or R-32 in my R-410A system?

No. EPA lists A2L refrigerants like R-454B and R-32 only for new equipment designed for them, and EPA's FAQ says SNAP rules and industry standards prohibit using them in systems not designed for them.

How long will R-410A be available for repairs?

EPA has not set an end date for servicing existing R-410A systems. The AIM Act phases HFC production and consumption down to 15 percent of historic baseline levels by 2036, and EPA notes HFCs and components may become less available over time, so supply is expected to shrink gradually rather than stop on a date.

How do I know which refrigerant my AC uses?

Look at the nameplate label on the outdoor unit. EPA notes most air conditioners have one that identifies the refrigerant along with safety and electrical ratings. Text a clear photo of it to (561) 210-7605 and we will tell you what it means for your system.