My tankless heater's been acting up lately—sometimes the water's hot, sometimes it's lukewarm at best. Did a bit of googling and seems like it could be anything from mineral buildup to sensor issues. I'm kinda handy, but not exactly a plumbing wizard, you know? Wondering if it's worth trying to flush it out myself or if I should just bite the bullet and call someone who actually knows what they're doing. What do you guys usually do in this situation?
Had pretty much the same issue last winter—water temp was all over the place, drove me nuts. Thought I'd save a few bucks and flush it myself... ended up soaked, frustrated, and still lukewarm. Turns out mine had a sensor issue anyway, so flushing didn't even help. If you're feeling brave, give it a shot (maybe you'll have better luck than me?), but honestly, sometimes it's worth just calling in someone who won't flood your laundry room.
