Aprilaire - Model 600

We just installed the Aprilaire 600m w/ auto sensor right after installing new hardwood floors. Haven't used it long enough yet to comment on performance other than to say it smells. There is a definite (chemical) smell coming up my bedroom vents, particularly right after the furnace shuts off. It's pretty strong and unpleasant. We already swapped out the filter after 1 month use. New filter stunk immediately. One of the service guys suggested we try a cheaper filter made out of cloth material. I'll give that a shot next. Also, on the times the humidifier kicks on, I hear a loud pipe bang when the furnace/humidifier shuts off. It kept waking me up the 1st couple of nights because it was running every time the furnace kicked on. Now, the humidifier only runs every so often. Maybe after a few months, I won't notice the noise as much? Full disclosure: the furnace is only 15 ft away in the basement. I'm giving some thought to shutting it down and just setting bowls of water on registers in each room thru the winter months since I don't have pets. Could have saved $790 if I knew ahead of time. I have no idea if this is normal or not. I live in a modest 1,150 sq ft ranch home for reference. Yes, the 600 is probably overkill. I wanted the 400, but installer only carried the 600 and wasn't willing to order a 400 for me because he buys 600's in bulk and said it wouldn't matter. So that's been my experience so far. Good luck.

i would never advise anyone to get a steam humidifier who does not have to. buy an aprialaire 600 bypass with the 65 controller that can run your furnace fan until humidity reaches setpoint. too much discharge water is because the orifice isnt right. they sell orifices. also, dont use piercing valves. they sell 1/4 turn valves. use that. you can control water excess with the 1/4 turn valve and the orifice. steam humidifiers are absolutely ridiculous.

Depends on what brands your getting quoted aprilaire is the king here and most others I've seen tend to junk out after a few years that's a fair price for the work being done

We charge about $1200 for an Aprilaire Model 600. Includes water line, low voltage wiring, 120 connected to transformer, bypass duct, humidistat controller, everything. I thought everyone does Aprilaire. Is your house, huge? Is there some reason you're asking for these 2 specific models? Edit: oh I see that first one is an Aprilaire. It's just a different type of humidifier. Unfortunately I'm not as familiar with them. But again, I'd question why you want that one instead of an Aprilaire Model 600 (by FAR the most common in my experience).

All you need is an Aprilaire Model 600. Easiest most common. Find someone to do it in the 900-1400 range. Depending on pricing in your area. Easy peasy. If you're in MN we will do it for you haha. Just my 2 cents. Been with my company 7.5 years and in sales just over 2 years.

Some clarification on his comment, I also wouldn't recommend a saddle valve (I call it a piercing valve) but the first quote is saying, I believe, "replace the saddle valve with a turn-ball valve". Regardless, it sounds like do not go with that first quote. WAY too high. The condensate pump, don't you already have condensate, for sure for an A/C cooling coil above the furnace, and maybe also for the furnace if it is high efficiency with PVC vent pipes. Shouldn't need a new condensate pump, but I'm not 100% sure you're setup. More just assuming. Otherwise yeah the 2nd quote might be just a bit high. Either use them or get one more quote. Again, I would just do an Aprilaire Model 600. Or a basic similar bypass humidifier. Should be 900-1400 I don't know if you're rural or city.

I feel your pain. We moved to Colorado a few years ago and finally found a solution that works. At first I had a whole home unit (AprilAire 600) hooked up to my furnace but since I have a tankless water heater so it will only run when the heat is on which is not long enough to increase the humidity to a decent level. So here is the unit I found on Amazon and for the last 3 days it has put 18 gallons of water into the air in my home and increased the humidity from low 20's to 40%. Not just one room either, my whole home. Let me know if you have any questions. [https://www.amazon.com/dp/B0CGR1N9T6?ref=ppx\_yo2ov\_dt\_b\_fed\_asin\_title](https://www.amazon.com/dp/B0CGR1N9T6?ref=ppx_yo2ov_dt_b_fed_asin_title) EDIT: Oh yeah, it is an evaporative unit so no white dusk and it is very easy to clean.

Humidifiers make water. I install them on the return side so that if there is a water issue it's into your duct work, not onto your heat exchanger (furnace). The 600m is fine and less technology means fewer points of failure.

If you have central heating and air I HIGHLY recommend looking into a central humidifier especially if you are in a very dry area. Set and forget with auto water feeding and humidity setting with minimal (like 1x a year) maintenance. They are usually not super expensive to install either. I like the Aprilaire units.

600 is a bypass air humidifier. 720 is fan powered. 800 is steam. 720 is 60% more water efficent over 600 model, has an easy to change hydrocore, and is better performing. While having no performance drop on 2 stage and variable speed furnaces. I'd go 720

Ive never heard of a single stage A/C that can't be paired to a two stage or modulating furnace before. Blower speed for the furnace heating will be variable, however for A/C cooling it will be a single constant airflow speed. To be honest with your current configuration the 600 will do just fine. However if you are considering a two stage model, which I will highly recommend, it should be paired to a 720 series.

As long as your return is 10” wide a 600 or 620 should work, good thing to know about the Automatic stat is it really needs a ODT to function the way it’s designed. Still nice to control the humi with the blower though if you can’t do get an ODT to work anywhere

Get the 720a. The 600 and 700 are good units but old designs. They are great and I recommend, install, and sell them all the time. I didn’t know April air came up with a new unit and I looked it up from seeing this post. The 720a looks like it solves A LOT of problems those two older models have. The old units use a ton of water, run a lot, and sometimes leak. The 600 is good if you don’t have a 120v plug nearby. The 700 is good for tight spaces, but you need a plug. If you really want a super high end humidifier you should get the steam model. You can make your 4600 sq ft house the Amazon rain forest with those. But they are expensive, have expensive maintenance, and are sometimes over kill.

A 600 can be 1300. 700 will be the same but in Maryland it has to have its own gfi plug so it ends up being 2300. The 720a should be the same. But honestly, anyone with a pair of tin snips and the ability to read the install manual should be able to do this on their own.