StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.
TermsPrivacy
Deal.ai › Optimus › Humidifiers
Optimus
Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier

Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier

Best price now

$48.99at NeweggChecked 13 h ago

30% under what the other stores charge

Compared across 5 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

Visit Newegg

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $48.99 at Newegg on Nov 10.
  • Checked at 5 stores.

Our take on the Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier

The Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier is a portable, transparent-tank humidifier for small to medium rooms. It runs quietly, shuts off automatically when the tank empties, and shows its water level through the clear tank. It is a basic, budget-minded unit: it lacks a humidistat, timer and remote, which rivals in its class often add. Owners like the simple fill and quiet mist but note the short run time and the upkeep an ultrasonic design needs.

Best forSmall bedrooms and nurseriesLight sleepers who want quiet mistBuyers who want a simple, no-frills unitAnyone who likes seeing the water level at a glance
Pros
  • Quiet ultrasonic mist
  • Clear tank shows the water level
  • Automatic shutdown when the tank runs dry
  • Simple top-fill-style setup and portable body
  • No filters to replace
Cons
  • No humidistat, so output runs until you switch it off
  • 1.5 gallons gives a short run time at higher output
  • Ultrasonic units need regular cleaning to avoid white dust and film
  • No timer, remote or night light
  • Mist can dampen nearby surfaces if placed too close

Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier prices at every store

  • NeweggNew

    In stock

    $48.99+ $11.62 shippingChecked 13 h ago
    Visit Newegg
  • Best BuyNew

    In stock

    $65.49Free shippingChecked 13 h ago
    Visit Best Buy
  • NordstromNew

    In stock

    $69.97Free shippingChecked 13 h ago
    Visit Nordstrom
  • Shop SimonNew

    In stock

    $69.97+ $4.95 shippingChecked 13 h ago
    Visit Shop Simon
  • Lowe'sNew

    In stock

    $90.99Free shippingChecked 13 h ago
    Visit Lowe's

Store links may earn us a commission. Some prices via Klarna.

Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier price history

Lowest price we've seen: $48.99 on Nov 11 at Newegg. Tracked across 5 stores since Nov 11.

What reviewers say

Owner feedback is mixed. People praise the quiet operation and the easy-to-see tank, but many complain about the short run time and the cleaning an ultrasonic humidifier demands.

What people mention
  • NoisePraisedOwners say the ultrasonic mist is quiet enough for a bedroom.
  • Run timeCriticisedReviewers report the tank empties fast at higher output, so it needs refilling often.
  • CleaningCriticisedOwners say the tank and base need regular cleaning to keep the mist clean.
  • Tank visibilityPraisedThe clear tank lets owners check the water level without opening it.
  • ControlsMixedPeople like the automatic shutoff but miss a humidistat and timer.

Specifications

Color
Transparent, WhiteSource
Functions
Ultrasonic Humidifier, HumidifierSource
Features
Water Tank, Portable, Automatic ShutdownSource
Water Tank Capacity (gal)
1.5Source

Questions and answers

How long does the tank last?
At low output it can run through a night; at high output expect to refill it within a day. The 1.5-gallon tank is small for larger rooms.
Does it have a humidistat?
No. It mists until you turn it off or the tank empties, then shuts down automatically. You set the room's humidity by eye or with a separate hygrometer.
Is it quiet enough for a bedroom?
Yes. Ultrasonic mist is close to silent, and owners commonly use it in bedrooms and nurseries. You may hear a faint hum or water trickle.
Does it produce white dust?
It can if you use hard tap water. Use distilled or filtered water and clean the tank regularly to limit mineral dust and film.
What rooms does it suit?
Small to medium rooms such as bedrooms, offices and nurseries. For a large open space, a unit with a bigger tank and a humidistat works better.
Do I need filters?
No. It is a filter-free ultrasonic design, but it still needs regular cleaning of the tank and base.
Where is the Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier cheapest?
At Newegg, for $48.99, 30% under what the other stores charge, as of our latest check.
Where can I buy the Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier?
5 stores we checked sell it, including Newegg, Best Buy, Shop Simon, Nordstrom, Lowe's.

Stores we've priced the Optimus 1.5 Gallon Cool Mist Ultrasonic Humidifier at

  • Best Buy deals and prices
  • Lowe's deals and prices
  • Newegg deals and prices
  • Nordstrom deals and prices

More from Optimus

  • O
    Optimus 1.4 Gallon Cool Mist Ultrasonic Humidifier
    Optimus 1.4 Gallon Cool Mist Ultrasonic Humidifier
  • O
    Optimus F-0645 Convertible Personal Clip-on/Table Fan
    Optimus F-0645 Convertible Personal Clip-on/Table Fan
  • O
    Optimus F-0600 Personal Clip-on Fan
    Optimus F-0600 Personal Clip-on Fan
  • O
    Optimus H-7247 Portable Oscillating Ceramic Heater with Thermostat
    Optimus H-7247 Portable Oscillating Ceramic Heater with Thermostat
  • O
    Optimus Portable Fan Forced Radiant Heater with Thermostat
    Optimus Portable Fan Forced Radiant Heater with Thermostat
  • O
    Optimus Portable Oscillation Ceramic Heater with Thermostat
    Optimus Portable Oscillation Ceramic Heater with Thermostat
  • O
    Optimus Portable Utility Heater Full Size
    Optimus Portable Utility Heater Full Size
  • O
    Optimus H-3013 Portable Utility Heater with Thermostat
    Optimus H-3013 Portable Utility Heater with Thermostat
All Optimus deals and products →