Winter is coming!!! Now is time to get your systems ready for the colder temperatures if you haven’t done so already. In this article I will show you steps to winterize your units. Many people don’t really think about their AC or evaporative coolers much after the summer months, but if you continue to do necessary maintenance steps. Then you can help prolong the life of your units, and that will help you save a few bucks eventually.
Most units in Arizona that I come across are heat pump units. Meaning that they are built a special way in which they have a reversing valve. That will cause the hot air to blow across your indoor (evap) coils as opposed to usually leaving your outdoor (condenser) coil. Heat pumps usually are enough here in the desert since we only near freezing temperatures in the winter. Some heat pump units will have electrical heater strips as an addition to the heat pump operation. I have attached some examples of reversing valves below.
Brothers Heat Pump Reversing Valve 2.0 TonGoodman 0151M00019SP Goodman Reversing Valve And Coil (B1227316S)Goodman 0151R00071SP Reversing Valve (V6-414081-1GD) comes w/ BFKZ-053S Bi-Flow Filter DrierGoodman B1225017 24V Reversing Valve Coil
There are many other types of heating systems. Another common set up is a gas furnace. They are sometimes built into package units. They are easily identifiable with their need for a gas line hooked up to the unit. You will want to make sure the units engage when you call for heating on your thermostat. If you have a gas system you will want to make sure the gas valve is open. The thermostat should engage the furnace. Which will cause gas to engage and get lit by the igniters. Electrical heat strips should engage if they are equipped. If you have a hydronic system. You will want to make sure the water pump engages and flows the water through your coils.
Watts Dormont 30C-3131KIT-48B Complete Gas Range Install Kit 48-Inch LengthMr. Heater One-Stop Universal Gas-Appliance Hook-Up KitHot Max 24201 Extension/Appliance Hose for Propane or Natural Gas, 25 FeetEtekcity Lasergrip 1080 Non-contact Digital Laser Infrared Thermometer Temperature Gun -58℉~1022℉ (-50℃～550℃), Yellow and BlackNubee Temperature Gun Non-contact Infrared Thermometer MAX Display & EMS AdjustableFluke 62 MAX IR Thermometer, Non Contact, -20 to +932 Degree F Range
It is a good time to inspect the life of the other working parts of your evap cooler when winterizing it. I usually will replace the pads and possibly the belt at the end of the season if they have mineral build up on them. When winterizing I recommend shutting off the water supply, and removing the drain stem to remove the water from the pan. You can keep the fan plugged in if you would like to use it to bring in fresh air still. This is a good practice to follow because freezing water can shorten your machine’s life.
I hope this article has helped you prepare for winter. Please comment or email if you need some help answering questions.