Kohler K-6665 Series: The Core Instant-Hot Line
The Kohler K-6665-VS and K-6665-BV are under-sink instant hot water dispensers built around a 1500W immersion heating element and a 0.4-gallon (1.5-liter) stainless steel storage tank. Output temperature is adjustable between 190F and 210F via a thermostat dial on the tank body. At 190F, you get near-boiling water for instant oatmeal, French press coffee, and blanching vegetables without waiting for a stovetop kettle. Delivery rate is approximately 60 cups per hour under continuous demand.
K-6665-VS vs K-6665-BV: Finish Differences Only
The VS suffix denotes Vibrant Stainless finish on the dispenser faucet; BV is Brushed Vibrant Moderne Brushed finish. Both models use the identical tank and heating assembly (part K-1001082). The faucet body is 5.5 inches tall with a single spring-loaded lever that must be actively held to dispense -- a child-safety feature that prevents accidental scalds. Faucet flow rate is 0.42 GPM at the default thermostat setting of 200F.
Kohler WaterTile and Singletank: Specialty Dispenser Applications
The Kohler WaterTile overhead body spray panel (22895-G-CP) is a shower-side water panel rather than a kitchen dispenser. The Singletank undersink hot water storage vessel (K-72218) supplements the K-6665 by adding a second 0.4-gallon tank where demand exceeds single-tank capacity -- a setup used in catering prep kitchens. Neither replaces the K-6665 as a standalone kitchen instant-hot unit.
How Kohler Compares to InSinkErator and Moen
InSinkErator H770 and F-HC1100SN match Kohler at 1500W but offer a larger 0.5-gallon tank. Moen S5520SRS uses a 1/3-gallon tank -- smaller than the Kohler 0.4-gallon vessel. Kohler edges Moen on recovery capacity but trails InSinkErator slightly. Kohler faucet styling integrates more seamlessly into Kohler kitchen suite finishes (Vibrant Stainless, Oil-Rubbed Bronze) for homeowners already running Kohler fixtures throughout the kitchen.
Who Should Buy a Kohler Instant Hot Dispenser
Kohler instant hot dispensers suit kitchens where the homeowner has already selected Kohler faucets and wants finish continuity at the sink. The 0.4-gallon tank handles a household of 2-4 people for morning tea, instant soups, and pasta blanching without depletion. Households needing chilled or room-temperature filtered water should look at a separate countertop cooler -- Kohler does not manufacture a cold-water or bottleless cooler dispenser.