Does the air coming from your supply registers unexpectedly seem warm? Inspect the indoor part of your air conditioner. This part is housed within your furnace or air handler, if you rely on a heat pump. If there’s water seeping onto the floor, there might be ice on the evaporator coil. The AC coil within the equipment might have frosted over. You’ll need to melt it before it can cool your home again.
Here’s the steps you should take. If you can’t get the coil back to normal, Service Experts Commercial HVAC is here to support you with air conditioning repair in Toronto upheld by a 100% satisfaction guarantee.*
Step 1: Turn the Air Conditioning Off and the Blower On
To begin—set the thermostat from “cool” to “off.” This stops cold refrigerant from going to the outdoor compressor, which could hurt it and result in an expensive repair.
Next, adjust the fan from “auto” to “on.” This makes heated airflow over the frosty coils to make them defrost faster. Double check to set the cooling mode to “off” so the air conditioner doesn’t start a cooling cycle.
It could take not more than an hour or the better part of a day for the ice to defrost, depending on the extent of the buildup. While you’re waiting, check the condensate pan under the AC unit. If the drain line is clogged, it can create a mess as the ice melts, likely creating water damage.
Step 2: Pinpoint the Problem
Bad airflow is a leading explanation for an AC to freeze up. Here’s how to get to the bottom of the issue:
- Check the filter. Poor airflow through a filthy filter could be the issue. Inspect and change the filter once a month or as soon as you observe dust accumulation.
- Open any sealed supply vents. Your house’s supply registers should remain open all the time. Sealing vents decreases airflow over the evaporator coil, which might lead it to freeze.
- Look for blocked return vents. These often don’t come with moveable louvers, but furniture, rugs or curtains can still cover them.
- Low refrigerant: While airflow restrictions are the most frequent suspect, your air conditioning may also not have enough refrigerant. Depending on when it was installed, it may use Freon® or Puron®. Insufficient refrigerant calls for pro help from a certified HVAC tech. H2: Step 3: Get in Touch with an HVAC Specialist at Service Experts Commercial HVAC
If poor airflow doesn’t seem to be the trouble, then another problem is causing your AC frost over. If this is what’s happening, just defrosting it won’t fix the problem. The evaporator coil will possibly keep freezing unless you take care of the underlying cause. Contact an HVAC technician to look for problems with your air conditioner, which might include:
- Refrigerant leak: AC units recycle refrigerant, so it shouldn’t run low. Low refrigerant means there’s a leak somewhere. Only a technician can locate the leak, mend it, and recharge the air conditioner to the appropriate concentration.
- Dirty evaporator coil: If dirt collects on the coil, air can’t flow over it, and it’s apt to freeze.
- Nonfunctional blower: A defective motor or unbalanced fan might stop airflow over the evaporator coil.
The next time your AC freezes up, get in touch with the NATE-certified specialists at Service Experts Commercial HVAC to take care of the issue. We have lots of experience helping homeowners diagnose their air conditioners, and we’re certain we can get things operating again in no time. Contact us at 289-201-2346 to schedule air conditioning repair in Toronto with us right away.
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