My washing machine has reminded me to clean its drum three times since June. The dishwasher nags about rinse aid. The coffee maker counts brew cycles and demands a descale on schedule, like a small appliance accountant.
Not one device in this house has ever mentioned the AC condensate line.
That's the gap in relying on apps for maintenance. They're diligent about the parts they can sense and completely silent about everything else, and late August, right before the season turns, is exactly when the silent list comes due. So here's the full pass, sorted by what your appliance apps catch and what they'll never see.
Credit where it's due: what the reminders cover
I'll say something nice about smart appliances for once. Maintenance reminders are the single most useful connected feature they offer. Better than remote start, better than voice control, and I'd choose them over both.
Why? Because they're counters, not guesses. A washer that's logged 38 cycles since the last drum clean prompts you at the right moment rather than on some calendar you'd ignore. Descaling alerts, tub clean prompts, rinse aid and filter warnings, door left open alarms: all covered, all reliably nagged about.
What they miss is everything without a sensor behind it. Which turns out to be most of the house.
Which AC Jobs Does No App Ever Mention?
Two jobs here, and only one of them ever appears in an app.
The filter is the famous one. ENERGY STAR's heating and cooling maintenance checklist says to inspect, clean, or change air filters once a month in a central air conditioner, furnace, or heat pump. Note the wording: monthly is a check, not automatically a swap. A dirty filter increases energy costs and damages the equipment, leading to early failure, which is the whole reason the interval is that short. After a summer of daily runtime, yours has earned a look. Some smart thermostats estimate filter life from runtime hours, and that beats nothing, but an estimate is not a look. Pull it out and look.
The condensate line is the one nobody mentions. Your AC pulls litres of water out of the air every day, and it all leaves through one narrow drain pipe that grows algae in the dark all summer. When it clogs, the drain pan overflows, and if the air handler sits in an attic or a closet, that overflow becomes a ceiling stain. A cup of plain white vinegar poured down the line's access tee every month or two of cooling season keeps the growth down. Takes ninety seconds. No app on earth will remind you.
The fridge: coils and gaskets
Even a fridge with a camera inside and a screen on the door won't tell you its condenser coils are furred with dust. Here the honest answer is narrower than most advice admits. Whirlpool says routine cleaning is typically not needed in a normal home, and that households with pets, heavy kitchen traffic, or construction dust should inspect and clean every three to six months. Two caveats before you drag the thing away from the wall: some models seal the condenser so it never needs cleaning, and on others only a technician can reach it. Check the use and care guide first.
While you're down there, check the door gasket. Close the door on a strip of paper. If it slides out without resistance, that section isn't sealing, and the compressor is paying for it all day. Wipe the gasket with warm soapy water either way; a sticky gasket tears.
Why Does a Clean Washer Still Smell?
Here the reminder actually fires. LG and Samsung both tell you to run the tub clean cycle monthly, and the app will pester you until you do.
What the prompt doesn't cover is the door gasket on a front loader. Peel back the rubber fold. In my experience that's where the smell actually lives, in the black residue the cleaning cycle never quite reaches, and the fix is a rag and ten minutes, not another cycle. Wipe it, then leave the door ajar between washes. If your machine isn't connected yet and you want the cycle counter doing this arithmetic for you, we've covered connecting a washing machine to Wi-Fi.
Dishwasher filter and range hood grease
The dishwasher filter takes two minutes: twist it out of the floor of the tub, rinse under the tap, done. Bosch says to clean the filter every few months, or monthly on hard water, and some connected models do track it. Most don't. If dishes come out gritty, this is why, and our smart dishwasher guide covers what else the machine should be doing for you.
The range hood is the forgotten one. Those metal grease filters have been collecting a whole summer of cooking, and a saturated filter barely pulls air. Drop them in the dishwasher or soak them in hot water with a degreaser before autumn stew season starts. Has any hood ever reminded anyone of this? Mine certainly hasn't, and it has an app.
What Should You Check Before the Weather Turns?
Three checks before the weather turns, none of them sensored.
- Window and door seals. Run a hand around each frame on a breezy day, or hold an incense stick near the edges and watch the smoke. Failed weatherstripping found now gets fixed in an afternoon; found in November, it gets endured until spring.
- Grout and caulk. Look along the tub and shower lines for cracks or gaps. Water that gets behind tile does its damage invisibly, and a tube of caulk costs a few euro while rot costs thousands. Dark staining on caulk means it's already past saving. Cut it out and redo it.
- Gutters. Do the first pass now, before the leaves come down, and check that downspouts actually discharge away from the foundation. You'll be doing it again in late autumn. That's just gutter ownership.
The honest version of the checklist
Trust the apps for what they count: drum cleans, descales, filters with sensors behind them. Then put the rest on a recurring calendar entry, because the most expensive failures in a house come from exactly the parts that can't speak up. What surprised me the first time I did this pass properly was the timing: the whole list fits in one weekend morning, condensate flush included.
The apps are good employees. They're just not the building manager. For the wider view of which connected features earn their keep, our smart home beginner's guide takes the whole house in one pass.