If you're currently sweating in your living room and questioning how to fix AC that blows hot air, a person probably don't caution about the history of refrigeration—you just want to prevent melting. It's one of those classic "Friday afternoon" difficulties that seems to happen right when the temperature hits triple digits. Before you resign yourself to a night associated with sleeping before a good open fridge or even shelling out 100s for an emergency repair call, let's consider a deep breath. Many of the time, the reason your air conditioner is acting like a glorified space heater is actually something you can handle yourself within a few mins.
Start along with the "Duh" times
We've just about all been there. You're stressed, it's hot, and your brain isn't firing on almost all cylinders. The very first thing you should check will be your thermostat. I realize, it sounds too simple, but you'd be surprised how normally a stray knee or even a curious kid bumps the configurations.
Make sure the temperature control system is actually set to "Cool" plus not "Heat. " It happens even more often than individuals like to confess. Also, check the particular fan setting. When your fan is usually set to "On" instead associated with "Auto, " the blower will certainly run 24/7. When the outdoor air compressor cycles off due to the fact the house arrived at the target heat, that fan maintains spinning, blowing unconditioned, room-temperature air by means of your vents. This feels warm by comparison. Switch it to "Auto" and notice if that corrects the vibe.
The air filter is probably gross
In case you can't keep in mind the last time a person changed your air filter, that's the huge red light. The clogged, dusty filtration system is the number 1 enemy of a functional AC unit. When the filter is usually packed with pet curly hair and dust, the system has to work two times as difficult to pull air through. Eventually, the particular airflow gets so restricted that the particular internal coils can in fact freeze over.
When your own coils turn into a block associated with ice, they can't absorb heat from your own home anymore. The result? The fan will keep blowing, but the air appearing out of the particular registers is lukewarm at best. If your filter looks such as a wool jacket, swap it away for a fresh a single. If you observe ice on the lines near the particular indoor unit, switch the whole system off and allow it to thaw for a few hours before trying again along with the new filtration system.
Go outdoors and look from the condenser
Your AC system is a team effort between the indoor unit plus the outdoor device (the condenser). The particular outdoor part is responsible for releasing heat it gathered from inside your home. If that large metal box will be buried in high grass, covered within "cottonwood" fluff, or choked by overgrown bushes, it can't breathe.
When the condenser can't dissipate heat, the whole cooling cycle stops working, and you finish up with warm air indoors. Grab a garden hose— don't work with a pressure washer , as the fins are delicate—and lightly spray down the particular exterior from the unit. Clear away any leaves or debris that have collected around the bottom. Giving your AC about two feet of "breathing room" on all edges can make a massive difference in how properly it performs.
Check your circuit breakers
Sometimes, the power surge or a particularly hot day can result in a breaker to trip. Interestingly, your own indoor air handler (the part that blows the air) as well as your outdoor air compressor in many cases are on various circuits.
If the breaker intended for the outdoor device trips, the indoor fan helps keep working because it nevertheless has power. It'll feel like the particular AC is working because you hear the particular whirring and experience air coming through the vents, consider the compressor outdoors isn't running, that air isn't being cooled. Head to your electrical -panel and look for any switches that aren't fully within the "On" place. Flip it all the way in which to "Off" and then back to "On" to reset to zero it.
Coping with frozen evaporator coils
We mentioned this briefly with the air filters, but icy coils are the major reason exactly why an AC halts blowing cold. If you notice a puddle of water under your indoor device or see whitened frost on the copper pipes, your own system is actually a block associated with ice.
Apart from dirty filters, this can also take place in case you close as well many supply ports in unused rooms. People think they're saving money simply by closing vents, however it actually messes using the system's pressure plus temperature balance. Open all your grills and make sure nothing is blocking the return air grilles (the big ones). If it's currently frozen, turn the particular AC off plus turn the "Fan" setting to "On. " This will certainly blow warm air over the coils to melt the glaciers faster. Don't change the cooling back on until the ice is totally long gone.
When the problem is a little bit more serious
If you've checked the thermostat, changed the filter, cleansed the outdoor unit, and reset the breakers, and you're still wondering how to fix AC that blows hot air, you may be searching at a mechanical failure.
The most typical "pro-level" issue will be a bad capacitor . The capacitor is much like a big battery power that gives the outdoor motor the "kick" it needs to start up. In case you hear a whistling sound from the outdoor unit yet the fan isn't spinning, the capacitor has likely given up the cat. It's a relatively cheap part, but unless you're comfortable working with electricity (and discharging high-voltage components), this is usually where you call a technician.
Then there's the dreaded refrigerant leak . Your AC doesn't "use up" refrigerant just like a vehicle uses gas; this circulates it within a closed cycle. If the refrigerant is low, this means there is an opening somewhere. If your system is blowing room-temp air and you hear a faint hissing sound or see greasy spots on the refrigerant lines, you've got a leak. Adding more "freon" is just a temporary bandage; a pro requirements to find the pit and seal cracks.
Prevention is preferable to sweating
As soon as you get your air forced ice-cold again, you probably never want to deal with this particular again. The best way to avoid the "hot air" shock is just the little bit associated with regular love. * Switch those filters: Set the calendar reminder intended for every 30 to 90 days. * Retain it clean: Spray that outside unit once the season. * Listen to your unit: If this starts making a fresh clunking or screeching sound, don't wait around for it to die. Address it while it's still blowing cold.
Fixing an AC that's blowing hot air usually comes down to air flow or power. In many cases, a simple $15 filter or the flip of the switch is all it takes to get back again to a comfortable, chilled home. When you go through this checklist and nothing works, from least you are able to tell the technician specifically what you've currently tried, which may save them time (and you money) on the diagnostic fee. Stay cool!