A useful smart-home upgrade does not have to connect to Wi-Fi. An instant hot-water dispenser can make everyday kitchen tasks easier simply by giving you hot water when you need it. In a September 10, 2026 article, Bertel King described the under-sink Waterdrop K6 as his favorite kitchen upgrade and the countertop Waterdrop M6CG as an alternative. Neither dispenser is internet-connected, so their appeal is convenience—not app or smart-home integration.
What makes an unconnected appliance feel smart?
“Smart” can describe a practical improvement to a routine, not just a device that communicates with an app, hub, or network. If you regularly wait for water to heat for tea or use small amounts of hot water for kitchen cleanup, a dispenser designed to provide hot water on demand may remove a step from those routines.
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That is the distinction behind King’s example: the K6 is a single-purpose kitchen upgrade, not a connected endpoint. The article describes personal experience, not an independent performance test. It does not establish measured time, energy, or cost savings, or independently verify water quality.
Under-sink or countertop: which setup fits?
| Consideration | Waterdrop K6 | Waterdrop M6CG |
|---|---|---|
| Placement | Under the sink, connected to the water supply, as described by King. | Countertop unit with a tank that requires manual refilling, as described by King. |
| Installation trade-off | Requires an under-sink installation; the article does not establish the requirements for every home. | Avoids an under-sink installation, but takes counter space and requires tank upkeep, according to the article. |
| Controls and dispensing | Specific control options and dispense amounts are not stated in the article’s extracted details. | King reports selectable temperatures and pour amounts. His unit reportedly offered temperature adjustments in increments of around 20 degrees and 4-, 8-, 16-, or 20-ounce pours; these are his reported details, not verified specifications for every unit or revision. |
| Connectivity | Not internet-connected, according to the article. | Not internet-connected, according to the article. |
Choose under-sink if you want an out-of-sight setup
The K6 is the fit King favors if you have a suitable place beneath the sink and are comfortable with the installation. His account says that setup avoids the countertop model’s visible footprint and manual tank refills. Those are reported ownership observations, not a guarantee that installation or upkeep will be the same in every kitchen.
#1 Best Overall
- HOT250 INSTANT HOT WATER DISPENSER: 8.21-inch faucet height, 2.97-inch width, single-handle faucet for kitchen sink in satin nickel and 750-watt, 2/3-gallon, stainless steel tank with adjustable temperature controls for near-boiling, instant hot water
- ON-DEMAND, NEAR-BOILING WATER: Instant hot water (approximately 200 degrees F) right next to the main kitchen faucet when you need it, for cooking, cleaning, and more; a time, space, and energy saver that lets you get on with more important things in life
- STYLISH, SMART DESIGN: Transitional faucet that complements most kitchen decor, with spout that swivels 360 degrees for convenience and a pull-forward handle to prevent interference with backsplashes or walls
- EASY DIY: Installation with just a standard 1 3/8-inch hole for faucet and under-sink outlet for tank’s power cord; tool-free tank connections, plus assurance of dry start protection for hot water tank if it accidently is plugged in without water
- 3-YEAR LIMITED SERVICE WARRANTY: Backed by InSinkErator's 3-Year "We Come to You" Limited Service Warranty; HOT250 instant hot water heater and dispenser system that is compliant with NSF/ANSI/CAN 372 and NSF/ANSI/CAN 61: Q<1 lead-free standards
Choose countertop if avoiding under-sink work matters more
The M6CG is the alternative described for someone who does not want an under-sink installation. In exchange, you need space on the counter and must refill the tank. King’s account also identifies limits in temperature increments and available pour sizes; check the specifications for the exact revision you are considering rather than assuming his unit’s controls apply to all versions.
Compare with a kettle or stove-heated water
A conventional kettle or heating water on the stove may already suit your routine. The practical question is whether you value having a dispenser at the sink or counter enough to accept its installation, footprint, and upkeep. The article offers personal impressions about convenience, not a measured comparison of speed, operating cost, energy use, or capacity against a kettle or stove.
Rank #2
- Includes Satin Nickel finish instant hot water dispenser and unique Hot100 2/3 gallon stainless steel hot water tank
- Delivers up to 60 cups/hour of 200 degree f near-boiling water
- We come to you 1-year in-home limited
- Tool-free tank connections and dry-start protection to ease installation
- Easy-to-adjust temperature control. Spout height-6.25 inch. Spout Reach-5.38 inch
How does this differ from a connected kitchen appliance?
Connected appliances are a separate option for people who want app monitoring, remote control, alerts, or voice control. Whirlpool says Matter 1.3 added appliance categories including microwaves, ovens, vent hoods, and cooktops, while noting that manufacturers could implement those categories in future designs and that Matter-enabled products would take time to reach consumers. That announcement describes a standard’s scope, not support in every appliance currently available.
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Bosch describes Matter as providing core appliance control and monitoring across platforms, while its Home Connect app retains broader features for supported appliances. KitchenAid describes app monitoring, connected cooking, voice control, and alerts on select smart appliances, with capabilities varying by model. In other words, a Matter label or an app does not by itself establish that a specific appliance exposes every function you want.
Rank #3
- HOT250 HOT/COLD INSTANT HOT WATER DISPENSER: 8.21-inch T x 3.96-inch W, 2-handle, satin nickel faucet for kitchen sink and 750-watt, 2/3-gallon, stainless steel tank with adjustable temperature for near-boiling hot water and filter-ready cold water
- ON-DEMAND, NEAR-BOILING WATER: Instant hot water (approximately 200 degrees F) right next to the main kitchen faucet when you need it, for cooking, cleaning, and more; a time, space, and energy saver that lets you get on with more important things in life
- FILTER-READY COLD DRINKING WATER FAUCET: Option to add an InSinkErator water filter to instant hot water heater and dispenser, ensuring hot and cold drinking water tastes and smells great and improving water quality by reducing harmful impurities
- EASY DIY: Installation with just a standard 1 3/8-inch hole for faucet and under-sink outlet for tank’s power cord; tool-free tank connections, plus assurance of dry start protection for hot water tank if it accidently is plugged in without water
- 3-YEAR LIMITED SERVICE WARRANTY: Backed by InSinkErator's 3-Year "We Come to You" Limited Service Warranty; HOT250 instant hot and cold water dispenser system that is compliant with NSF/ANSI/CAN 372 and NSF/ANSI/CAN 61: Q<1 lead-free standards
Check the exact model before buying for an ecosystem feature
- Confirm that the specific model supports the app, voice assistant, or Matter function you plan to use.
- Check which controls are available through Matter and which require the manufacturer’s app.
- Review setup requirements for that model. KitchenAid, for example, notes a 2.4 GHz Wi-Fi requirement for its connection process and says capabilities vary by model.
Whirlpool’s announcement quotes its director of global IoT strategy, Ryan Craig, saying the company’s work with Matter aims to give consumers flexibility to create a smart home that fits daily life. That is Whirlpool’s stated goal, not an independent assessment of how well a particular appliance works.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is an instant hot-water dispenser worth it?
It may be worth considering if you regularly want hot water and prefer a dispenser built into the kitchen over heating water separately. The choice depends less on whether it is “smart” in the connected-device sense and more on which trade-off suits your kitchen: under-sink installation or a countertop footprint and tank refills. If your main goal is remote control or ecosystem integration, these two dispensers do not answer it; look for a connected appliance whose exact model supports the functions you need.
Quick Recap
Best Value
- HOT250 INSTANT HOT WATER DISPENSER: 8.21-inch faucet height, 2.97-inch width, single-handle faucet for kitchen sink in matte black and 750-watt, 2/3-gallon, stainless steel tank with adjustable temperature controls for near-boiling, instant hot water
- ON-DEMAND, NEAR-BOILING WATER: Instant hot water (approximately 200 degrees F) right next to the main kitchen faucet when you need it, for cooking, cleaning, and more; a time, space, and energy saver that lets you get on with more important things in life
- STYLISH, SMART DESIGN: Transitional matte black faucet that complements most kitchen decor, with spout that swivels 360 degrees for convenience and a pull-forward handle to prevent interference with backsplashes or walls
- EASY DIY: Installation with just a standard 1 3/8-inch hole for faucet and under-sink outlet for tank’s power cord; tool-free tank connections, plus assurance of dry start protection for hot water tank if it accidently is plugged in without water
- 3-YEAR LIMITED SERVICE WARRANTY: Backed by InSinkErator's 3-Year "We Come to You" Limited Service Warranty; HOT250 instant hot water heater and dispenser system that is compliant with NSF/ANSI/CAN 372 and NSF/ANSI/CAN 61: Q<1 lead-free standards
Rank #4
- INSTANT HOT WATER DISPENSER: This instant hot water system features a chrome side faucet & a 2/3 gallon stainless steel tank with easy-to-adjust temperature control that delivers instant, near-boiling water.
- ORIGINAL DESIGN & EASY TO INSTALL: Our original dispenser style not only features a twist top handle for effortless use, it is easy to install with a single hole in your counter top and electricity under your sink.
- HOT WATER ON DEMAND: Whether you're cooking, cleaning or preparing hot beverages, instant hot water dispensers sit on the edge of your kitchen sink ready to dispense near-boiling water when you need it. Save time, space & energy in the kitchen.
- FASTER, CLEANER, SMARTER: From meal prep to cleanup, InSinkErator helps make it fast & easy to keep your kitchen clean with our iconic appliances: garbage disposals & instant hot water dispensers. Housing Material-Plastic
- A HISTORY OF INNOVATION FOR THE SINK: We invented garbage disposals in 1927, & we're the world’s largest manufacturer of garbage disposals & instant hot water dispensers for home & commercial use.
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