Tips

• Check to see if the thermostat display is blank. If so, see the section “The Display on My Thermostat is Blank”.
• Check the settings on your thermostat. If you want cooling, make sure the temperature control selector is set below room temperature and the SYSTEM switch is on the COOL or AUTO position. The FAN switch should be set to AUTO.
• Check the air filter(s) for your air conditioner and replace if necessary.
• Check the bottom of the air handler/furnace to see if it is very cold and sweating. If so turn the air conditioner off for at least 4-5 hours and replace the filter. The unit is frozen and will need to defrost.
• Check the breakers for your air conditioning system. There will be one for the indoor air handler/furnace unit and another for the outdoor condensing unit. If one of them has tripped it can be reset by first moving it to the OFF position and then back to the ON position.

The most obvious explanation to either of these problems is that the A/C is wrongly sized. Give us a call at (714) 499-9922 to see if adjustments can be made for better performance. Otherwise, do the following:

• Make sure an air register isn’t blowing directly on the thermostat.
• Change the air filter.
• Have the refrigerant checked.

• Check the air filter(s) for your air conditioner and replace if necessary.
• If your home has a zone comfort system, check the settings on the thermostat for that particular zone. If you want cooling, make sure the temperature control selector is set below room temperature and the SYSTEM switch is on the COOL or AUTO position. The FAN switch should be set to AUTO.
• Are window treatments installed? If not, install window treatments. If so, adjust the treatments so that minimal or no sunlight is allowed to directly enter the room(s).
• Check the supply-air and return-air grilles in the room(s) to ensure they are open completely and blowing air while the system is running.
• Check if there are many electronic devices operating in the room(s). Rooms converted to offices may be warmer due to these devices and not due to the air conditioner operation.

• Give us a call at (714) 499-9922 we are available 24 hours a day 7 days a week to schedule one of our professionals to assess the problem.
• Consider opening windows if it is cooler outside than in your home.
• Use fans to circulate air in the home and improve your comfort.
• If there are multiple systems in your home, consider relocating activities or sleeping to the cooler area of your home temporarily.
• Consider alternative accommodations if necessary and immediate relief is not possible.