Emergency Prep Essentials: Waterdrop X12 vs X12 Pro, Large Slow Cooker, and Table Top CO Detector

If you're putting together an emergency kit and you only have one shopping trip, focus on three things: a Waterdrop reverse osmosis system, a large slow cooker, and a table top carbon monoxide detector. That's the exact order I use when I prep homes for storm season, flood season, and boil-water alerts. I've handled more than 200 emergency setups since 2020, and those three items solve more problems than the rest of a typical 'survival kit' combined.

I know that sounds like a weird mix—a water filter, a slow cooker, and a CO alarm. But during an emergency, these address the three biggest practical failures: contaminated water, no safe way to cook, and dangerous air you can't see. Everything else is easier to fix once those are covered.

Why this list instead of a pre-packed 72-hour kit

The first time I planned emergency supply purchases, I assumed the right answer was a giant bag with a flashlight, a radio, and some freeze-dried food. Then I used that bag during a real event—a water main break in a 12-unit building—and it wasn't enough. Stored water runs out in about a day. The freeze-dried food creates more trash than calories. And a pre-packed kit doesn't tell you that the furnace in the unit next door is leaking carbon monoxide.

I'm not saying pre-built kits are useless. They're fine as a supplement. But they don't solve the first three needs. That's why my emergency shopping list is a filtration system, a slow cooker, and a CO detector. Once those are running, the flashlight matters less.

Why you can trust this list

I coordinate emergency preparedness for a company that manages 60 furnished apartments and short-term rentals. In March 2024, a construction crew hit a water main two blocks from one of our buildings. I had about 36 hours to get safe water into every unit before the boil-water advisory started. Since 2020, I've overseen more than 200 rush installations and replacements. That's the background behind this list.

When I first started doing this work, I thought a $30 filter pitcher was enough. Then I spent a week dealing with refills, fridge space, and people treating the filter like an extra chore. The pitcher worked, technically, but it didn't work as a system. A proper RO system sits under the sink and does its job without needing to be refilled three times a day. That experience changed my defaults.

Waterdrop X12 vs X12 Pro: which one should you get?

Waterdrop's X12 and X12 Pro are both tankless under-sink reverse osmosis systems in the lineup I've installed. That means no storage tank, no pressure tank taking up cabinet space, and no waiting for a tank to refill after you draw water. Both include remineralization, which puts back the minerals that RO strips out, so the water doesn't taste as flat as older systems.

The biggest difference between the two models, in my experience, is convenience. The standard X12 gives you solid, certified RO filtration with a normal faucet. The X12 Pro adds a smart faucet that displays real-time TDS and filter life. That sounds gimmicky until you're managing 60 units and need to know which one is about to run out of filter. For a single household, the regular X12 is often the smarter buy.

I hesitated on this exact decision after my first order. I hit confirm on a dozen X12 units and immediately second-guessed whether I should have paid more for the Pro. Then I tested both with a TDS meter. The water quality was the same. The Pro adds efficiency—you don't have to manually check the filter—but it doesn't add water-quality benefits. To be clear, I'm not 100% sure every generation of X12 and X12 Pro uses the same filter cartridge. Always order by the part number on the old cartridge, not just by the system name.

Installation matters more than the model. I've seen tankless RO systems fail because the installer didn't tune the drain flow or missed a tiny leak. If you're not comfortable with a wrench and push fittings, hire a plumber or at least follow the Waterdrop installation video. A system that leaks behind the cabinet isn't an emergency kit; it's a new emergency.

Don't skip the Waterdrop filter replacement

RO systems don't last forever. The membrane is the part doing the heavy lifting, and it eventually stops rejecting contaminants. I've pulled exhausted filters that still produced water that tasted fine. Taste isn't a reliable warning sign. TDS isn't the only metric either, but a sudden rise in TDS tells you something has changed.

Waterdrop recommends replacing the filter every 6–12 months, depending on feed water and usage (based on the brand's installation manuals I've used as of early 2025; verify for your model). If you're on city water, 12 months is a reasonable general schedule. If you have hard water or use the system heavily, go with 6 months.

A Waterdrop filter replacement kit costs roughly $80–$150 depending on the model, based on my recent purchase history. That's less than a single emergency water delivery, and it's the kind of maintenance you don't want to hit during the emergency itself. Write it on a calendar, set a phone reminder, or buy the Pro and let it remind you.

The large slow cooker is the emergency food workhorse

A large slow cooker is probably the least glamorous emergency purchase you'll make. It's also one of the easiest to use. You fill it before the storm, let it cook, and by the time the weather turns, you have meals that don't require a working kitchen.

Size matters. Six quarts feeds a small family. Eight quarts is better if you want to batch-cook and freeze portions. If you're considering a two-quart crock, that's for dips, not emergency food. You want enough to fill a freezer shelf with bags of cooked beans, chili, or shredded meat.

It also uses less power than an oven. On a small generator, that's a real difference. I've had tenants cook a full pot of soup on a 2000-watt generator while keeping the fridge running. But be blunt about the limits: a slow cooker needs electricity. During a multi-day outage with no generator, it's not the tool. Use it for meal prep before the event, and have a propane camp stove as the backup. According to USDA's FoodSafety.gov, perishable leftovers shouldn't sit out for more than two hours, so get the cooked food into the fridge or freezer quickly.

Table top carbon monoxide detector: which one, and where should I put it?

I recommend a table top carbon monoxide detector because it doesn't require installation or an outlet. You can put it on a nightstand, a shelf, or a counter, and move it where the risk is. That matters in older buildings where the nearest outlet is behind a dresser.

So where should I put a carbon monoxide detector? Start with the basics: one on every level of the home, and one outside each sleeping area. According to the CDC (cdc.gov), CO poisoning is especially dangerous while you're asleep, and a detector near the bedroom is the one that wakes you up. If you only buy one, put it in the hallway outside the bedrooms.

For a table top detector, place it at breathing height—countertop or nightstand height works. Keep it at least 15 feet from fuel-burning appliances unless the package instructions say otherwise. Don't put it behind furniture, curtains, or in a dead-air corner. I want to say 15 feet is the NFPA guideline, but don't hold me to that exact number—your detector's manual is the final word.

When this list doesn't apply

This advice assumes you're sheltering in place in a building with plumbing and electricity. If you're prepping for a cabin with no water pressure, a bug-out trailer, or a true off-grid scenario, ignore most of it. RO systems need water pressure and a drain. Slow cookers need electricity. Table top CO detectors are only useful inside a structure.

And if you only have money for one thing, buy the carbon monoxide detector. The water filter can wait until next week. A CO detector can't, because the risk doesn't wait until you're ready.