Vicks V150 vs V745 (2026): Steam or Warm Mist?

This is the difference that generates every other difference, and it is worth being precise about. The V150 boils. Current passes between two electrodes in the tank, the water's own dissolved minerals carry that current, resistance heats the water to a boil, and the machine releases real steam. The V745 heats but does not release steam. It warms the water and then cools the resulting mist inside the housing, so what reaches the room is warm and moist rather than hot.

Both approaches share the advantages of heating: no wick filter to replace, so no annual consumable cost, and no white mineral dust, because unlike an ultrasonic disc neither unit atomizes dissolved minerals into the air. Both also share the corresponding obligation, which is that heating concentrates minerals in the base, so both need emptying and rinsing daily and descaling with white vinegar on the manual's schedule.

The single feature that keeps people inside the Vicks lineup rather than buying a cheaper or larger Levoit is the medicine cup, a shallow well on top of the unit designed to hold Vicks VapoSteam. Vapor rising past the cup carries camphor and menthol scent into the room. The V150 and V745 both have one. This axis is a tie, and it is the reason the comparison is between these two units rather than between one of them and a smart humidifier.

The rule that goes with it: VapoSteam belongs in the medicine cup, never in the tank water, and never in an ultrasonic or cool-mist humidifier, where it can damage the plastics and will not vaporize as intended. An 8 ounce bottle is $9.98, verified via the Amazon Creators API on September 5, 2026, which makes it the cheapest part of either setup. Detail in the VapoSteam review and can you put Vicks in a humidifier.

If your preference is a dry pad rather than a liquid, note that the standard V150 and the V745 both use cups rather than pad slots. The night-light version of the V150 at $34.76 adds a VapoPads slot, and the economics of pads versus liquid are worked out in the VapoPads review.

Tank goes to the V150, decisively. It holds 1.5 gallons against the V745's 1 gallon, and Vicks publishes a run time of about 24 hours per fill for it. Vicks publishes no run time for the V745 at all, and this page will not derive one, because the variable that would let us do that, output rate, is also unpublished.

What partially offsets the gap is the V745's low speed. A unit run at reduced output empties its tank more slowly, so a 1 gallon tank on low can outlast expectations, while a single-speed V150 runs at whatever rate it runs at. That is a real mitigation and it is also unquantified, so treat it as a reason not to overstate the V150's advantage rather than as a reason to ignore it.

The purchase gap is $19.70: $19.79 against $39.49, verified via the Amazon Creators API on September 5, 2026. The running cost gap is zero, because both units are filter-free. That is worth dwelling on, because it is the strongest financial argument for either machine against the rest of the category.

An evaporative humidifier draws air through a wick that must be replaced several times a season; Honeywell's Filter A three-pack is $29.21 at our verification. Over three winters that is real money, and neither Vicks unit asks for any of it. The only consumable either machine has is VapoSteam at $9.98, and that is optional.

If the room belongs to a baby or a mobile toddler, this entire comparison is the wrong question. Both the V150 and the V745 heat water, and the American Academy of Pediatrics prefers cool-mist humidifiers in children's rooms specifically because warm-mist and steam units hold hot water that can scald a child who tips or reaches the machine. Cooling the mist, as the V745 does, protects the room; it does not empty the reservoir.

So for a nursery: buy cool mist. Within the Vicks range that is the Filter-Free Ultrasonic at $68.97 or the cheaper Cool Plus at $49.99 with its published 1.2 gallon tank. Outside it, the full ranked field is in the best cool mist humidifiers and the nursery-specific picks are in the best humidifier for baby.

For an adult bedroom, or an older child's room where you control placement, either unit is fine with the same discipline: on the floor, on a hard surface, roughly four feet from the bed, cord routed where nobody catches it, out of reach. And keep the room in the commonly cited 30 to 50 percent relative humidity band, because past roughly 60 percent you are encouraging mold and dust mites rather than helping anybody breathe. See ideal humidity for a bedroom.