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What are the differences between ResMed’s H5i™, H4i™ and HumidAire 3i™ humidifiers? Find answers to your most frequently asked questions about ResMed humidifiers here.
A. Yes, this is normal operation for the H5i. There are a number of differences between the H5i and H4i humidifiers that cause this:
A. Yes. The water level that’s left after use doesn’t give the best indication of how your humidifier is functioning. As the H5i provides constant moisture output, it only uses the amount of water needed to provide the required level of moisture. If set at the same Climate Control temperature throughout the year, the H5i will use significantly less water during summer than it will during the winter.
A. Yes. To confirm whether your H5i is functioning properly, complete the following steps;
A. Both the H4i and HumidAire 3i humidifiers are high-quality devices designed to improve your sleep apnea therapy. However, the H4i is the newer and more advanced model, providing 30 percent more humidification than HumidAire 3i. H4i also has 65 mL more water capacity to support humidification needs at higher flow rates and pressures.
Both humidifiers offer user-friendly humidity controls — simply start at setting 3, then customize for comfort. Both also have a snap-top cover that’s easy to use, set up and refill.
A. The H4i humidifier doesn’t have a ResMed logo on the front panel; rather, it’s located on the bottom of the device. The H4i also has a larger heater plate and offers a thumb notch on the rounded top cover. The HumidAire 3i’s cover is more slanted and does not offer a thumb notch.
A. Yes. The H4i water tub be used with the HumidAire 3i docking station by replacing the top cover and seal of the 3i with the new top cover and seal (PN 26953), H4i water tub (PN 26952) and cleaning plug (PN 26955). You can use either the standard or cleanable H4i water tubs on a HumidAire 3i docking station. However, you cannot use a HumidAire 3i water tub on the H4i docking station.
A. The humidification levels with H4i tubs used on a HumidAire 3i system will be equal to using the HumidAire 3i tubs. However, you’ll have the ability to take advantage of the larger 65mL water capacity for higher pressures and bilevel therapy. The H4i tubs are also offered at a lower cost than HumidAire 3i tubs.
A. Yes. You can purchase the H4i humidification system as a separate purchase (PN 26940). You may also purchase the H4i with a “cleanable” water tub (PN 26950) separately.
A. To use the cleanable tubs while using the HumidAire 3i docking station, you must purchase the flip-top cover and seal (PN 26953). You may then purchase the cleanable tub separately as needed (PN 26958).
Do you have a question about the differences among ResMed humidifiers that isn’t addressed here? Contact ResMed customer support at 1 (800) 424-0737, or click here to submit an online inquiry.
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