Help! My A/C isn't Working!

Are you having air conditioner issues?

It may take several hours to cool your home to the desired temperature depending on the outdoor temperature, humidity level, and desired thermostat temperature. Your air conditioner is not designed or expected to maintain an indoor air temperature cooler than 24°C or 75°F. Checking the vents for cool blowing air will be a more immediate indication of your air conditioner functioning than the temperature changing on your thermostat. 

Your air conditioner is intended to maintain cool air for long periods of time, it is not advised that you turn the system on and off daily as the system will need to work harder to remove the heat and humidity that build. Your air conditioner should not be turned on unless the outdoor temperature is at least 16°C or 61°F to avoid damage to the unit. 

• Make sure the power switch to your furnace is on. (Looks like a light switch but dedicated to your furnace)
  
  
• Check the air conditioner breaker on the electrical panel, make sure that it is on.
  
  
• Check that the air conditioner has the high voltage wiring connected
  
  
• Check that the electrical disconnect outside beside the condenser is set to ON
  
  
• Check / Change the batteries in your thermostat
  
  
• Make sure the thermostat is set to cool and the desired temperature is below the current indoor temperature

Have you replaced your Builder Supplied thermostat?  If so, have the company that installed return to ensure the thermostat was wired correctly and is not the cause of the loss of cooling

Be sure that your furnace filter is clean, you should change it monthly for highest efficiency and energy savings.  TURN OFF your furnace at the power switch prior to removing your filter.  A furnace should never run without a filter. 

Clean the outdoor condenser unit. (Click the link to see article- Air Conditioner Condenser Cleaning)

If your system shut down due to a dirty filter or outdoor condenser, you likely have a frozen coil which is the indoor air conditioning component installed above the furnace. The coil will need to thaw for 24 hours before another attempt to run the system can take place, you may notice water draining while the coil is thawing.

Ensure the condensate lines are free and clear of debris and are able to flow straight without kinks directly to the drain line. Make sure the drain is not clogged with sludge.

Once all of these things have been verified, if your system is still not blowing cool air, contact your builder service department

If you've had a recent power outage and have a Honeywell IAQ Thermostat that will not reconnect to Wi-Fi, try the steps in this link- Honeywell Thermostat Troubleshooting