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With all of the RH discussion, you all might appreciate this story more than most. Our house is about 15 years old, so we've reached that point where a lot of the original items are beginning to wear out. So far, during COVID, we've had a hot water heater replaced, one garbage disposal replaced, one sink repair, and dishwasher repair. Thankfully, we carry a home warranty, so a monthly fee and house call charges pay for most of these repairs.
We have two A/C units: one that cools the main house, and a second that cools the upstairs bedrooms. For the last two months, we've been bombarded with two significant heat waves and smoke from the devastating wildfires, so we've been unable to open up and forced to run our A/C more than usual (24x7).
Last month, during the first heat wave, the one A/C unit began making loud noises when it cycled off. We have a home warranty, so we called for a repairman to hopefully repair or replace the unit. He said the unit is dying, but it's self-contained, so he can't repair it... and the home warranty won't cover a replacement until it actually dies. Could be a week, month, year.
Flash forward to the last 7-10 days. I'm still running the A/C 24x7, and since COVID keeps us home, I keep the temp stable on both thermostats (dropping it at bedtime). But I haven't been able to figure out why my humidity is so high. My de-humidifier has been running like crazy, I'm dumping ~5 gallons of water each day, and it's still unable to get below 50% (according to my SensorPush).
Last night, it's midnight. Kids are asleep, guitars are back on their racks, and I get around to activating a second SensorPush device. I placed the device in my bedroom, figuring I'd watch the temp/RH acclimate on the app (just lowered to bedtime temp), while I watched TV. But after an hour, the temp hadn't changed, and I realized I never lowered the main house thermostat. Another hour -- and another episode of "The Americans" (highly recommended) later, and the main house temp starts coming down. But the bedrooms are still warm, which indicates to me that the secondary A/C unit is either dead or not working properly (blowing warm/moist air into the house).
At 2:30am, I turned off the upstairs A/C and started a third episode, texting my wife with the latest details (she works nights at the ER). Finally, temps are dropping, and an hour later, and I finally get to sleep at 4am. I woke up a couple of hours ago, and the main house temp is spot-on at 70F (where I set it), and bedrooms are beginning to cool down. And the RH has dropped to ideal levels, even with another full tank of water waiting for me in my dehumidifier.
Since our floor plan is open, and I keep both units at the same temp, I have no idea how long I've been running a dead secondary A/C unit, but probably as long as I've been emptying my dehumidifier like mad (7-10 days). Although I would have figured it out last night by lowering only one thermostat, the second SensorPush was able to confirm it in real time, so cheers to being a guitarist who's obsessed with temp and humidity!
And since photos add to a good story, here are my screen shots from last night and this morning. Time to request another HVAC repairman with the home warranty company.
2:23am - Sensor is the music room; "other" sensor is my MBR
![[Image: xuNgGUC.png]](https://i.imgur.com/xuNgGUC.png)
3:43am - house temp decreasing, but still warm upstairs; RH is better
![[Image: romaO9s.png]](https://i.imgur.com/romaO9s.png)
10:57am - resumed daytime temp, so 70F is rising; RH continuing to hold
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