Twice in the last week I've awakened to small, unidentifiable noises. Both times I strained to hear and understand. Both times I wanted to roll over and forget it. Both times getting up and checking it out avoided big problems.
Last week the temperature dropped below 0, a rare thing here in Missouri. A strange clicking sound outside my room woke me up early in the morning. I already had my grump on, so I added a coat and some boots and went outside to figure out what was going on. Turned out a switch in my heat pump had developed some kind of glitch. Switching the system to all gas solved the problem until a service person could check it out. More importantly, it avoided burning out the compressor, which could have been quite expensive.
Last night the sound of a small rush of water woke me. Following the strange little noise, I found that my icemaker was stuck on refill for some reason, and water was pouring down the front of the frig and all over the hardwood floor. Switching off the icemaker stopped the flow. I mopped up the water and went back to bed.
Can't tell you the times I've ignored warning signals in my life. Giant red flag waving inches from my face? No problem. I just closed my eyes and my mind. This never, ever resulted in anything good.
So, it's only a heat pump and a frig, but maybe this means I'm making progress. It's about time.