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pureguardian H4500 Humidifier Review (Formerly Germ Guardian H4500)

Pure Guardian H4500 Humidifiers
pureguardian H4500 Humidifiers

The pureguardian H4500 humidifier is stylish, simple to operate and maintain. As with the other pureguardian humidifier models, the H4500 features a similar retro-feel design and is equipped with many of the same operational features. However, due to its higher capacity tank and humidity output, the H4500 will provide that extra oomph of moisture required for a decent sized bedroom. Overall, we feel confident that the pureguardian H4500 humidifier will provide comfort, relief and better indoor air quality for medium-sized bedrooms up to 500 square feet.

1. Room Coverage
2. Level of Quietness
3. Filter Life & Cost of Replacement Cartridges
4. Amount of Maintenance Required
5. Anti-bacterial Features
6. Ease of Filling
7. Ease of Operation and Filter Replacement
8. Quality of Construction
9. Humidistat to select desired humidity level & hygrometer to display the actual humidity in the room Not Applicable
10. Frequency of Filling
11. Value for Price




Due to its higher capacity tank and simple operation, we found the pureguardian H4500 to be the right humidifier for those who wish to keep an acceptable amount of moisture in a medium-sized bedroom without having to constantly refill the water tank. When set on its highest fan speed, the H4500 was able to emit a powerful cool mist for close to 25 hours without the tank running on empty. When on its lowest speed it can consistently run for up to 5 days without refilling. However, running times can vary depending on the atmospheric conditions inside and outside. If under extremely dry conditions, a higher output of moisture will be needed. The H4500 isn’t equipped with a humidistat or hygrometer for those who desire a specific humidity reading in a room. Additionally, it will not provide sufficient moisture for large areas exceeding 500 square feet. Nevertheless, we were still impressed with how the H4500 quietly provided an adequate level of humidity that made a once dry environment comfortable again.

This humidifier is almost completely silent and basically cannot be heard when placed across the room. However, there is a bluish/green “power on” indicator light which emits a faint glow. Those who are extremely sensitive to light while sleeping may find this bothersome. In contrast, for those who prefer a night light and comfort, the night lamp button will emit a soothing bluish circle around the control panel.

Compared to many of the humidifiers we offer, the pureguardian humidifiers feature Silver Clean technology to fight the growth of mold and bacteria that typically form in the water tank. As a result, this means less hassle and costs when compared to replacing filter wicks, pads or UV bulbs. For those who may be concerned about white dust we do offer an optional decalcification filter cartridge. Another feature which sets the pureguardian humidifiers apart is its “retro radio-like” design that both adults and children find fun and appealing. Overall, the pureguardian H4500 Humidifier is a functional and practical humidifier which will humidify a decent sized room without frequent refills or constant maintenance.

Links: pureguardian H4500 Humidifiers | pureguardian Humidifiers | Humidifiers

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