07/31/2021
I haven't posted here for a while but something happened so I thought it may be a good time. Earlier this week I was asked to be interviewed for a news story on all the A/C units that were going to go down in the heat and what could be done to prevent it. HIs 1st surprise came when I said that I don't see a lot of breakdowns this time of year.
Most thinks mechanical will fail when you try to start them after they have sat for months unused. Gee that kinda sounds like an A/C unit doesn't it. When they sit for a long time the oil tends to drain down so the startup is dry, and things that sit for a while tend to want to stick in the position they have sat in.
The 2nd surprise came when I told him when it gets this hot most systems don't shut off so they don't have the shock of the initial starting torque that happens to get things to start moving.
One thing that did not get mentioned was that while we see temperatures over 100 at times, it is not uncommon for the desert Southwest to see temperatures climb over 115. Most companies don't make a special unit for the extremes of one part of the country over another so the same unit for your house is probably on a house in the Southwest.
On the part that did air I talked about keeping landscaping away from the unit, 2' minimum. The unit needs to breath and without proper space air coming off the unit which can be a much as 30° hotter than the surrounding air gets recirculated which only makes things hotter.
Another tip I brought out was to keep the unit clean. If you do this yourself you need to be careful that you are not just packing the dirt, grass, lint, cottonwood seed, etc. If this stuff doesn't get washed out it just packs in and makes it even harder for the unit to breath. I think this is a good place for a reminder to change your filter often.
Finally, while there are a lot of fine points that can be gone over another main one is to keep the thermostat set at one temperature instead of raising and lowering it. Adjusting the temperature at different time during the day is fine in moderate weather but when it gets to the extremes it is harder for the system to catch up that to maintain. Also during the extended off time when the temperature is set up more humidity has a chance to settle into your house which then needs to be removed later.
Have a great rest of the summer.