--- product_id: 752077 title: "SU-3750: Penguin Ultrasonic Humidifier" brand: "spt" price: "Β£55.49" currency: GBP in_stock: true reviews_count: 5 category: "Spt" url: https://www.desertcart.co.uk/products/752077-su-3750-penguin-ultrasonic-humidifier store_origin: GB region: United Kingdom --- # Adorable penguin design 7.5L/day moisture output 1-year parts & labor warranty SU-3750: Penguin Ultrasonic Humidifier **Brand:** spt **Price:** Β£55.49 **Availability:** βœ… In Stock ## Summary > πŸ§πŸ’§ Breathe Better, Live Happier β€” The Penguin Humidifier Your Space Deserves! ## Quick Answers - **What is this?** SU-3750: Penguin Ultrasonic Humidifier by spt - **How much does it cost?** Β£55.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/752077-su-3750-penguin-ultrasonic-humidifier) ## Best For - spt enthusiasts ## Why This Product - Trusted spt brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safe & Smart Auto Shut-Off:** Peace of mind with automatic power-off when water runs lowβ€”no alarms, just seamless operation. - β€’ **Generous 1-Gallon Tank Capacity:** Less refilling, more continuous moisture for your home or office. - β€’ **Chic Penguin Design for Every Room:** Blend functionality with playful style that fits perfectly in bedrooms, nurseries, or workspaces. - β€’ **Effortless Maintenance, No Filters Needed:** Save time and money with easy cleaning and filter-free operation. - β€’ **Maximize Comfort with Ultrasonic Precision:** Experience whisper-quiet, heat-free humidity that soothes your space all year round. ## Overview The SU-3750 Penguin Ultrasonic Humidifier delivers up to 7.5 liters of cool, ultrasonic moisture daily from its large 1-gallon tank. Designed with a charming penguin shape, it operates quietly and safely with an auto shut-off feature, backed by a 1-year warranty. Ideal for bedrooms and offices, it requires no filters and offers hassle-free maintenance, making it a smart, stylish solution for year-round air comfort. ## Description Help your little ones breathe easier by adding moisture to the air with our adorable Penguin-shaped humidifier. Provides year-round relief from the drying effects of AC and Heater. Features super-quiet operation, 1-gallon tank capacity and auto shut-off protection (with no audible alarm) the perfect addition to any child’s room. Review: Troubleshooting Solutions for this Excellent Product - This is an excellent product. We own three and have used them for two years now. We even take one with us when we travel. Some of the common problems people have mentioned with this humidifier are easily solved if the unit is used correctly. For problems with the unit running for hours without the water level dropping, you have not properly seated the tank on the base. You need to be sure the white valve inside the tank pops up when the tank is placed on the base. If it is not properly seated the water will not enter the base, thus no mist. Next, for problems with the mist sinking to the ground, we had this problem before I realized what was happening. I had one unit placed on a thin fabric placemat thinking to protect the wooden nightstand. This only caused a problem. The unit needs to be placed on a completely flat, solid surface, not fabric of any kind. Try it - place the unit on a fabric surface and watch the mist fall. Then place it on a solid surface and the mist rises beautifully. I was making a problem where there wasn't one. Without the fabric the unit performed beautifully and the mist has never damaged the beautiful cherrywood surface. With the fabric underneath, the mist sunk and soaked said fabric, causing problems unnecessarily. Lastly, as to the comments about unit running, all put together properly, but no mist, we also had that issue. This was due to the base of the unit getting overfilled. Not sure how we managed that, because if you seat the tank on the base properly, only the right amount of water passes through. Easily solved, however. I dumped the water from the base, and put the filled tank back on and voila! Misting perfectly again. This product is super easy to fill, inexpensive, requires no filters, and works GREAT. It does require a little care, as the problems outlined above are all due to human error. If you have hard water it will definitely cause a white dust to form on the unit and possibly surrounding surfaces. This is easily cleaned and hasn't damaged anything we own, but you will have to do the appropriate cleanings as recommended. The only imperfection we found was that the light on the front to indicate the unit is on burned out quickly on all our units. This was not a problem for me, as I did not care for the bright red light anyway, as these are used in bedrooms at night. But for someone who relies on seeing the light to remember the unit is running, this could be an issue. Since it happened to all three of ours, I suspect it could be a broad issue. But it has no effect on the efficiency of the unit. The unit is cute but not cutesy. My kids love it, and my husband doesn't mind it. As with anything, you have to teach your children proper care around an appliance. The good thing is that the mist is cool, so no chance of burns. It's also quite sturdy and solid, it's not easy to knock over. We've had them for over two years in three rooms with kids who are now 3 and 7, and never yet had an incident. Not to say it couldn't happen, but with proper care this product should serve you well for a long time. I highly recommend this product. Review: Piece of junk unit quit working week 4 - The unit worked well to start. After 2 or 3 weeks we had a few instances where it wouldn't turn on right away - we changed outlets and it still didn't come on. Then it came back to life, so we didn't think much of it. After 4 weeks, it would come on for a minute, and then power would shut off. It would not come back on for at least a few hours. Then it would cut right back off again. There is only a 30 day return policy from manufacturer (convenient, right!?). So, now they tell me I can send it to them in CA for repair. I have to pay shipping to CA, but they will repair and ship back for free. OK - by the time I package this thing up and ship it to CA it will come close to or exceed the purchase price. NOT a good deal. desertcart's return policy is only 30 days as well, so again, it is not worth shipping it to KY for partial credit. Throwing this piece of junk in the garbage! What a waste. ## Features - 1-yr. parts and labor warranty - Ultrasonic (no heat) humidity - High humidity output - 1 gallon (3.75L) tank capacity - Moisture output up to 7.5 liters per day ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000O3LFPC | | Best Sellers Rank | #4,725,726 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #3,389 in Humidifiers | | Brand Name | SPT | | Capacity | 1 Gallons | | Color | Multicolor | | Control Method | Touch | | Customer Reviews | 3.4 3.4 out of 5 stars (131) | | Filter Type | Ultrasonic | | Global Trade Identification Number | 00876840002760 | | Included Components | auto shut-off float sensor, touch control panel/remote, user manual, cleaning brush | | Item Shape | Penguin | | Item Type Name | Penguin Ultrasonic Humidifier | | Item Weight | 6 Pounds | | Manufacture Year | 2018 | | Manufacturer | SUNPENTOWN | | Material | Plastic | | Model Name | Penguin Ultrasonic Humidifier | | Model Number | SU-3750 | | Operation Mode | Ultrasonic | | Other Special Features of the Product | Auto Shut Off, Quiet | | Power Source | Corded Electric | | Room Type | Bedroom, Living Room, Office | | Runtime | 0 minute | | UPC | 876840002760 884162666089 885536671791 882950608891 885822521014 885788559793 885618899297 956258014842 885442065165 885761624364 189707100111 882661187746 701722755451 885724524502 885201144902 971475361753 885401629780 885568871053 | | Warranty Description | 1 year manufacture warranty | ## Product Details - **Brand:** SPT - **Capacity:** 1 Gallons - **Color:** Multicolor - **Operation Mode:** Ultrasonic - **Special Feature:** Auto Shut Off, Quiet ## Images ![SU-3750: Penguin Ultrasonic Humidifier - Image 1](https://m.media-amazon.com/images/I/61Ml0oVDVoL.jpg) ![SU-3750: Penguin Ultrasonic Humidifier - Image 2](https://m.media-amazon.com/images/I/717TvnKzhxL.jpg) ![SU-3750: Penguin Ultrasonic Humidifier - Image 3](https://m.media-amazon.com/images/I/612QmltVtWL.jpg) ![SU-3750: Penguin Ultrasonic Humidifier - Image 4](https://m.media-amazon.com/images/I/51cnv7jlKQL.jpg) ![SU-3750: Penguin Ultrasonic Humidifier - Image 5](https://m.media-amazon.com/images/I/717tPeOwI0L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Troubleshooting Solutions for this Excellent Product *by L***E on January 31, 2011* This is an excellent product. We own three and have used them for two years now. We even take one with us when we travel. Some of the common problems people have mentioned with this humidifier are easily solved if the unit is used correctly. For problems with the unit running for hours without the water level dropping, you have not properly seated the tank on the base. You need to be sure the white valve inside the tank pops up when the tank is placed on the base. If it is not properly seated the water will not enter the base, thus no mist. Next, for problems with the mist sinking to the ground, we had this problem before I realized what was happening. I had one unit placed on a thin fabric placemat thinking to protect the wooden nightstand. This only caused a problem. The unit needs to be placed on a completely flat, solid surface, not fabric of any kind. Try it - place the unit on a fabric surface and watch the mist fall. Then place it on a solid surface and the mist rises beautifully. I was making a problem where there wasn't one. Without the fabric the unit performed beautifully and the mist has never damaged the beautiful cherrywood surface. With the fabric underneath, the mist sunk and soaked said fabric, causing problems unnecessarily. Lastly, as to the comments about unit running, all put together properly, but no mist, we also had that issue. This was due to the base of the unit getting overfilled. Not sure how we managed that, because if you seat the tank on the base properly, only the right amount of water passes through. Easily solved, however. I dumped the water from the base, and put the filled tank back on and voila! Misting perfectly again. This product is super easy to fill, inexpensive, requires no filters, and works GREAT. It does require a little care, as the problems outlined above are all due to human error. If you have hard water it will definitely cause a white dust to form on the unit and possibly surrounding surfaces. This is easily cleaned and hasn't damaged anything we own, but you will have to do the appropriate cleanings as recommended. The only imperfection we found was that the light on the front to indicate the unit is on burned out quickly on all our units. This was not a problem for me, as I did not care for the bright red light anyway, as these are used in bedrooms at night. But for someone who relies on seeing the light to remember the unit is running, this could be an issue. Since it happened to all three of ours, I suspect it could be a broad issue. But it has no effect on the efficiency of the unit. The unit is cute but not cutesy. My kids love it, and my husband doesn't mind it. As with anything, you have to teach your children proper care around an appliance. The good thing is that the mist is cool, so no chance of burns. It's also quite sturdy and solid, it's not easy to knock over. We've had them for over two years in three rooms with kids who are now 3 and 7, and never yet had an incident. Not to say it couldn't happen, but with proper care this product should serve you well for a long time. I highly recommend this product. ### ⭐ Piece of junk unit quit working week 4 *by B***R on May 27, 2011* The unit worked well to start. After 2 or 3 weeks we had a few instances where it wouldn't turn on right away - we changed outlets and it still didn't come on. Then it came back to life, so we didn't think much of it. After 4 weeks, it would come on for a minute, and then power would shut off. It would not come back on for at least a few hours. Then it would cut right back off again. There is only a 30 day return policy from manufacturer (convenient, right!?). So, now they tell me I can send it to them in CA for repair. I have to pay shipping to CA, but they will repair and ship back for free. OK - by the time I package this thing up and ship it to CA it will come close to or exceed the purchase price. NOT a good deal. Amazon's return policy is only 30 days as well, so again, it is not worth shipping it to KY for partial credit. Throwing this piece of junk in the garbage! What a waste. ### ⭐⭐⭐⭐⭐ Great humidifier *by T***E on February 17, 2010* I like to make it short Pro 1) Quiet 2) put out just right amount of mist for my 20 x 16' bedroom 3) Cheap and good looking design 4) Filter-less - save money on filter Con 1) White dust build up if using tap water - 2 days of using it 2) Expensive if using distilled water as recommended by manufacturer- $1/day - I used distilled water for 3 days and it is free of white dust I ended up using filtered water after 5th day instead for cost saving, but I have to let it stand for 24 hours before I fill the tank up just to let the fluorine getting out. This works best me. No more white dust, no more frequent trip to grocery store for distilled water, and best of it, no filter replacement but just my drinking water filter only --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/752077-su-3750-penguin-ultrasonic-humidifier](https://www.desertcart.co.uk/products/752077-su-3750-penguin-ultrasonic-humidifier) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-03*