Aprilaire 600 Whole Home Humidifier, Automatic High Output Furnace Humidifier, Large Capacity Whole House Humidifier for Homes up to 4,000 Sq. Ft.

Installing the humidifier went quite well. Since I have PEX on all my water lines I Tee'd into the piping and ran a line over near the solenoid valve and put a PEX shut-off at the end. The unit comes with a needle valve that is meant for copper pipe only. I had easy access to 120VAC for the transformer that supplies the solenoid valve. The humidifier drain was Tee'd into the 3/4" PVC drain line on the furnace. I put the outdoor air sensor for the humidistat on the intake of my HRV system close to the vent where it comes through the wall. I used 6" rigid duct and 90's to go from the humidifier to the return duct on the furnace. The unit comes with flexible 6" hose which I chose not to go with because the rigid won't have as much affect on air flow. I had to purchase the 18/5 and 18/2 thermostat wire needed to connect the humidistat to the furnace and solenoid valve and transformer. In summary I probably spent just over $100 on additional supplies ductwork, wiring and PEX pipe and fittings that was needed to install the humidifier. It took me a couple of days to put the system in and now it's up and running nicely controlling the relative humidity at 40%. So far I.m quite happy with the product.

The product itself: 9/10. Humidifies like the beast that it is. No leaks, no issues with it out of the box. One note is the controller unit could be better with showing target humidity, and show relative outside temp. The installation instructions assume their target audience knows what they are doing and knows how to read technical diagrams, which by that standard they are pretty fine. For other audiences, they might struggle with the assumptions the install instructions make. The install: For context, I’m an average DIYer. This was one of the harder DIY projects I have done on my house. It’s plumbing, electrical, and HVAC all in one project. You will be cutting metal, running wires, and running water lines. You will likely be spending at least half of the units cost on materials to install it, especially if you prefer copper water lines. The adjacent install kit is a waste of money if you want good materials for this unit. I come with a couple of recommendations: * if you have an older house, get your attic insulation sorted to retain heat well before this humidifier project. If your furnace has to run A LOT to keep up with the warmth of your older house, even this humidifier may not be able to keep up to the humidity level you need. * Wire the controller to the return first. This can be done independent of installing the unit and doing the water line. * do not use the solenoid that comes with the unit. They are notorious for leaking and not lasting the lifetime of the unit. Spend the money to get a better setup that will last you longer. * I also highly recommend using the same waterline material as coming from your water heater (likely copper or pex). * set up your water line second. This can also be done independent of the unit being mounted to the air supply. * wear long sleeves while cutting the metal for mounting the unit. It’s very easy to cut yourself. If you’re looking for a DIY adventure and a way to improve your own skills, this product is quite the challenge.

I recently purchased the Aprilaire 600 Whole Home Humidifier, and I couldn't be happier with the results! Living in a dry climate, I've struggled with uncomfortable indoor air for years, but this product has truly transformed my home environment. Installation was surprisingly straightforward, thanks to the comprehensive instructions provided. Even for someone like me who isn't particularly handy, it took just a few hours to set up the Aprilaire 600. The build quality is excellent, and it's clear that this product is designed to last. One of the things I appreciate most is the automatic control feature. It maintains the perfect humidity level in my home without me having to constantly adjust settings. This has not only made the air more comfortable but also helped me sleep better at night and reduced static electricity, which was a common annoyance in the winter months. The performance is outstanding. Within a short period of time, I noticed a significant improvement in the overall comfort of my home. My skin feels less dry, my allergies have improved, and even my furniture seems happier with the added moisture. It's also a relief to know that maintaining the optimal humidity level can help protect my wooden floors and prevent them from cracking. In summary, if you're tired of dealing with dry air and its negative effects on your health and home, the Aprilaire 600 Whole Home Humidifier is a fantastic solution. It's reliable, easy to install, and delivers noticeable results. I couldn't recommend it more highly – it's been a game-changer for me, and I'm sure it will be for you too!

I ordered my Aprilair 700 Humidifier and it arrived two days later as promised. Everything except the copper tubing, Drain tubing, Metal Screws and cabling was in the box. I followed the instructions and the install went smoothly once I bought the missing items, Instructions are clear and the template worked well. It took me 2 hours from start to finish, Straight forward, no help needed. I would recommend this humidifier, I have a large house and this humidifier does its job, no more guessing on the humidity setting, has a bright blue display of the relative humidity and it takes care of the adjustments itself, If you turn blower control on it will run the furnace fan for 2 minutes every hour to check the humidity, if the humidity is good it will stop, if not it will do its job and humidify the house, doesn't need the furnace to be running as it has fan control I would buy this again

My older AprilAire (44x series) whole house humidifier unit finally gave out after decades of service and outlasting the original furnace. I chose this unit as the replacement, hoping it would be an easy drop in. I was partially correct. The plenum cutout was entirely different. The new cutout required more total area, but the width was much narrower requiring the plenum to be patched with a sheet of galvanized sheet steel. Cutting the sheet before it was patched onto the plenum was easy, but enlarging the height of the existing plenum hole was a bit challenging to accomplish with normal tin-snips. I ultimately made the cut with a diamond cutoff wheel on my cordless angle grinder. After a few pop-rivets to marry the patch to the plenum and a few grinder sparks later, I was ready to mount the new humidifier. Be sure to follow the supplied template for creating the hole. Because this was a replacement for the previous generation humidifier, the water valve and piping, the hot-air bypass, and the humidistat were already present along with a sophisticated control and electronic interface module already set up to a well-know Minnesota manufacturer's electronics. The furnace also has an infinitely variable speed blower which maximizes the effectiveness of this humidifier. I took advantage of this maintenance activity and installed a condensate pump which allowed me to move the multiple hoses that previously ran across the floor, into the ceiling rafter space. This neatened up the entire installation, making routine cleaning of that area much easier. I turned the system on and the house was up to the 40% humidity set-point in a few hours. My system is smart enough that when the outdoor temperature dropped to -30 for a few days, the humidity was automatically reduced to avoid frost and ice build-up on the windows. It took a couple days to fine tune these settings, but I had less frost on the windows than I had in the past. I cannot speak to how the AprilAire-supplied humidistat might work because I used my own system that was already in place. For those who complain that this device uses too much water... the saddle valve is... a valve. Turn it down a bit. It is necessary to get enough water to wet the humidifier water pad, but that probably doesn't require you to run the water full blast. I adjusted mine by watching the water as it drained from the system "while in use, as used". In other words, adjust this with the furnace actually running and heating. As I currently have it adjusted, I get far more water from the furnace combustion product than I do from the humidifier.