Aprilaire E100 Pro 100-Pint Dehumidifier for Home Humidity Control

Cary Wilson: Just had a new heat pump installed in a house that had not been modernized in quite some time. Which lead to a problem. The AC had so much condensation that it made a puddle under the house. Was told by the foundation people that if I didn’t fix the problem soon in 6 months I’d be replacing the floor joists. They even recommend this brand. It seem to have fixed the issue! I’m happy.

United States on Oct 05, 2023

Peter webb: It was easy to install, and I like to simplicity of it and it works great

United States on Sep 28, 2023

RK: I previously had the older model Aprilaire 1850, which unfortunately had to be replaced. This newer E100 unit is a straightforward install for a DIY'er. I would strongly recommend before buying one for the first time you download the install manual from Aprilaire, and read the recommended method of placing it inline in a specific way in the duct work. It does use 10" ducts, which tend to not be readily available at Home Depot stores, but are available online from Home Depot. The unit does need to drain the water it collects (no tank), so if there is any way you can place it in a raised position for a gravity feed to a drain or outside, it would be to your benefit (no pump to worry about). It does come with a threaded nipple fitting for a flexible drain hose (drain hose not included), but I just plumbed it in with PVC directly with a threaded PVC transition fitting and pipe from Home Depot. I built a frame that allowed for easy access to the unit, and also allowed for its easy replacement with this new model; thankfully I had room near the HVAC system for this. Just plan out your install, and follow the recommended examples for the duct work or it won't be able to do its job.

United States on Jul 30, 2023

Oxygen Addict: I cannot say enough good things about this little dehumidifier. When I first installed it, it ran continuously for probably a day or two, maybe even three. It is integrated into my HVAC in a return to supply configuration and controlled by my Nest learning thermostat, which has its own humidity sensor. While that is convenient, however, Nest settings graduate in increments of 5%. If I had to do it over, I would have left the dehumidifier sensor to control the dehumidifier and signal the HVAC to turn on the fan.

I put it in my basement (poured concrete) to keep it dry. During humid months it would go between 55-60%, which was too humid for me. I bumped it down to 45%, which is perfect.

If you have ever had a standalone low-end dehumidifier, this is NOT that. While they certainly work, and I’ve used them before, there is simply no comparison. You get what you pay for.

My E100 has been operating without a hitch for 9 months. I love it so much, I’m putting an E130 in my attic to dehumidify my main floor and 2nd story. I will definitely configure that one to use the internal sensor and the HVAC fan.

**** After 9 months of operation ****

I...

United States on Mar 20, 2023

jclark211jclark211: The humidity in our 3,200 sq. ft. 2 story house with finished basement was consistently hovering around 70% on all 3 floors. We purchased this AprilAire E100 Pro unit and had it vented directly into our existing HVAC system. Although it took almost 4 weeks to bring the whole house humidity down to 40%, this dehumidifier has worked flawlessly from the very beginning.

Be advised this humidifier will display a reminder on the control screen to check and clean the air filter every six months. My only complaint is that the access panels are secured to the unit with a #10-24 x 1/2" truss head machine screw, necessitating the use of a screwdriver to gain access to the air filter. I corrected this inconvenience by replacing the supplied screw with a #10-24 x 1/2" knurled round plastic knob thumbscrew. See photos. Now I am able to access the air filter every six months simply by turning the knob with my hand, instead of fumbling around looking for a screwdriver each time. Seems to me AprilAire should have thought of this by including in its packaging a knobbed thumbscrew to use as a replacement for one of the existing access panel machine screws.

Overall, we are very pleased...

United States on Dec 13, 2022