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Sunpentown SU-4010 Ultrasonic Dual Mist Humidifier with ION Exchange Filter SPT


SU-4010 Size: 13.2W x 5.3D x 12.4H inches

In San Diego, it can get very dry either warm and cool conditions at the same place that make us looking for a humidifier for our bedroom. And then we have got this one in January 2010 after too many choices of product comparisons. So far it's been used for over a year on practically a daily basis. So my wife and I feel that the air is more pleasant to sleep and our cats certainly agree. I set it to keep the humidity between 50 - 60% that seems to be good for us. I have an electronic temperature and humidity indicator that I check when making adjustments and use that to get an idea whether to increase or decrease the setting.

Here are some reasons that might be make decision easier to get Sunpentown SU-4010 Ultrasonic Dual Mist Humidifier :

- It is ultrasonic to make a vaporizer humidifier , so no need to changing filters and the amount of mist can be varied. It can work through a tank in 12 hours or several days, depends on the setting, the weather and the size of the room that you place it in.
- Easy to refill the tank.
- Besides a very low hum, the unit does make an occasional gurgling sound, which you will get used to in a few days. I don't even notice it anymore.
- The warm mist is not exactly hot but it is warmer than the room air, so that's nice.
- Don't worry about leaving it on, it will stop itself when a red light show up. Very informative.
- Based on the visual level of the water and the setting, you will have a rough idea of how long the unit will take to run out of water.
- We use filtered water, which still has some minerals in it (we live in San Diego - hard water capital of the world), and even though all water goes through the filter, some white deposits do accumulate on the underside of the tank. You might want to clean this stuff off (mostly it comes off pretty easily) every few months. In any case, it's on the underside of the filling unit, you only see it when you turn the tank upside down to fill it.
Altogether, we are 100% satisfied with this unit. If it broke down, we'd buy another in a heartbeat.

Read review from customers

Crane Drop Shape Cool Mist Humidifier

Posted in


I purchased the Crane cool mist humidifier in December 10 and it works great for many months. I've read some of the negative reviews which I almost didn't purchase this machine but I'm glad I did, because it works really well for a mid size/capacity humidifier.

First of all, This humidifier has used a 2.3 gallon per day maximum output with a 0.9 gallon tank. Amazon's initial title for this mentions daily output capacity rather than tank size. This may be confusing, although the correct specs are prominently listed on the Amazon page - fifth bullet point in the "product features" section. The reviewers
complaining about the "misleading name" should try emailing Amazon suggesting a title change on their website... instead of writing a 1 or 2 star review of the product. That would be more helpful and more fair.

As for the product itself:

A few buyers obviously received defective machines; this has to be expected on some level with any manufacturer.

But having read over the negative reviews, I realized that most of the complaints were due to improper use of the machine.
It is essential to read the instruction manual and use the machine as intended by design. Doing so will avoid the pitfalls described by most of these 1-2 star review writers. For reference, I have addressed their most common complaints below:

1) White dust buildup in the room: use filtered or distilled water. This is important if you have hard tap water. (85% of American homes do.) I run my tap water through a Brita filter; the exchange ion resin lowers the concentration of calcium carbonates, accordingly softening tap water. It also helps keep the humidifier cleaner by removing organic impurities, and I have had no white dust buildup.
***If your water is particularly high in mineral content, you should use distilled water, or else opt for a vaporizer-type (humidifying) machine, which creates water vapor free of white dust.***

2) Limited effectiveness: you are trying to humidify too large a room. In my

Four Types of Ionization Air Purifiers

Four Types of Ionization Air Purifiers
Normally, people are unaware that there are four differences of ionic air purifiers in use nowadays. Ionizers in general have been around for many years.

Definition of an ion: an atom or molecule, electrically charged, which has lost or gained one or more electrons, making it either positively or negatively charged.

A simplified explanation of the process. The ionic purifier produces an ions then ions collide with and attach themselves to particles in the air (opposite charges attracted). The particles attach themselves to other particles, collection devices or filters or solid surfaces and removed from the air. The exact process depends on the type of ionic air purifier used.

Ionization is produced and present around you in the air we breathe outside. Ions are measured by how many present in a cubic centimeter. "Typical" clean air outside contains 3,000 positive+ and 4000 negative - ions per cm3. This amount can be influenced by a myriad of factors and is constantly changing and constantly replenished by sun, wind and storms.

By the research that the natural balance of ions outdoors is generally better than most of our indoor environments.

Have you ever felt like getting outside to get a breath of fresh air? Interestingly enough, some scientists point to +/- ions as part of the reason for outside air "feeling right". Unfortunately indoor air generally presents a problem for ions. In most cases the number of ions present is much less compared to outside air.

Sometimes there are too many positive ions and an imbalance occurs in house. Generally the imbalance leans towards the positive but another problem could occur if too many negative ions are present. A balance is the best just like outside.

Ok, great you say, now what about cleaning the air with air purifiers....




These are Four Basic Ionic Air Purifier Technologies:

1. Electrostatic precipitators and charged media filters: mainly passive technologies; most of the ionization occurs inside the air purifier. As air enters the purifier, an electronic charge is

Surround Air XJ-3800 Sensor technology monitors Intelli-Pro Air Purifier





Customer Reviews
Ultra Load,
by Amanda King
For the first time, It's bigger than it looks in the pictures: Stands about thigh-high. This put me off at first but then I plugged it in.
First impression: It's not doing anything then After two days: I want to have it's babies.

I have allergies miserable miserable allergies and I just moved back to Maryland during the worst allergy season I've seen in years.
To a house with three smokers. And Two Dogs. And Two Cats. This house has clutter (re: dust) and mold and four plants in the livingroom and old carpets. It has old furniture and crummy filters but it DOES have ceiling fans!

This house is allergy hell and this purifier? Ah!!! I swear I can breathe again. It cleans up the air (auto setting rocks!) of the entire 500 sq/ft first floor from *awful* to *clear* in roughly 20 minutes, and if it's running constantly, it never gets intolerable. In fact, it barely ever gets to worse than "do you smell something?" for more than a minute or two, even if there has been cooking and smoking and the dogs were in the rain.
Even if it only lasted 6 months before it totally broke down, it would be worth the price to pay every six months to get another one.

I am in love.
Make more of these.
Buy it. Buy ten and give them to your friends. Send this link to anyone with allergies. Or gas.



Air purifier for allergies, Honeywell 18155 SilentComfort Permanent







(Discount for 35%)
Product DescriptionHoneywell SilentComfort True HEPA Air Purifier with Advanced airflow design for ultra quiet high speed operation. This True HEPA air purifier removes at least 99.97% of airborne particles as small as 0.3 microns from the air that passes through the filter. 150 CADR / Recommended Room Size 15' x 15'. Replacement Carbon Universal Prefilter: 38002.

Designed for ultra-quiet, high-speed air purifying, Honeywell's SilentComfort HEPA air purifier removes at least 99.97 percent of airborne particles as small as 0.3 microns from rooms up to 225 square feet. The unit's no-draft technology provides efficient air cleaning without the cool-air exhaust. An Intelli-Check indicator lets you know when the filter needs to be cleaned. The SilentComfort also features two filtration systems; a true HEPA filter, and a carbon pre-filter that keeps larger particles from clogging the HEPA filter and helps reduce household odors. The purifier is equipped with a 3-speed fan that speedily removes dust, pollen, tobacco smoke, and cat dander from the air. The purifier also helps reduce airborne germs, bacteria, mold spores and fungus with up to 100-percent efficiency as well. And, the unit's advanced airflow design provides ultra quiet operation while room air is fully processed once every 12 minutes. The permanent HEPA filter is easy to clean and only needs it twice a year under normal circumstances. No more expensive HEPA filters to replace!

Product Features- Electronic filter clean reminder: quietly cleans the air with no cold exhaust draft.

Honeywell HHT-011 Compact Air Purifier with Permanent HEPA Filter



Product Description
Honeywell Permanent HEPA-Type Tabletop Air Purifier is 99.03% efficient at reducing airborne particles such as dust, tobacco smoke, pollen, cat dander & mold spores from the air that passes through the filter.

Product Features
- Compact tabletop air purifier for rooms up to 85 square feet in size
- Permanent HEPA-Type filter captures up to 99 percent of mold spores, pollen, pet dander, smoke and dust
- Optional ionizer for extra cleaning power; washable pre-filter
- Nightlight feature provides soft illumination
- Measures 10 inches by 6 inches by 11 inches; 3-year limited warranty

Our Customer Experiences
quiet little air purifier

I brought this one recently to replace the sharper image's ionizer purifier, since I want something to shut off the ionizer -- the air has some smell from those ions.

Hamilton Beach Air Purifier Model - #4492


Product Description
- Hamilton Beach® True Air® High Efficiency Air Purifier Model 4491
- Effective performance for large 180 square foot rooms
- Air quality sensor
- Easy HEPA filter replacement
- Quiet operation
- Energy efficient
- Style that fits your lifestyle

Product Features
- Hamilton Beach 04492 Trueair Tower Ironizer Air Purifier Filter
- HAMILTON BEACH/PROCTOR SILEX

Our Customer Experience
a True Energy Star
Kill-a-watt meter says: 42 watts on low, 54 watts on high. I started with one of these in my bedroom. The air is so clean it refreshes you like diving in a pool of water. I bought another one for the living room. I run both on high power all day, and on low power at bedtime. My Cats like to sleep in front of the unit, letting the fresh air blow on them.