--- product_id: 6275300 title: "AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray" brand: "aprilaire" price: "VT211807" currency: VUV in_stock: true reviews_count: 13 category: "Aprilaire" url: https://www.desertcart.vu/products/6275300-aprilaire-700m-whole-house-fan-powered-humidifier-manual-control-large store_origin: VU region: Vanuatu --- # Covers up to 5,300 sq. ft. 18 gallons/day humidification capacity Manual humidity control with built-in sensor AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray **Brand:** aprilaire **Price:** VT211807 **Availability:** βœ… In Stock ## Summary > πŸ’¨ Elevate your home's air game β€” breathe smarter, live better! ## Quick Answers - **What is this?** AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray by aprilaire - **How much does it cost?** VT211807 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/6275300-aprilaire-700m-whole-house-fan-powered-humidifier-manual-control-large) ## Best For - aprilaire enthusiasts ## Why This Product - Trusted aprilaire brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Hydration Powerhouse:** Delivers a robust 18 gallons of moisture daily to maintain optimal indoor humidity levels between 40%-60%. - β€’ **Precision Manual Control:** Take charge with a built-in sensor and manual humidistat for tailored humidity settings that suit your lifestyle. - β€’ **Seamless HVAC Integration:** Built-in fan pulls heated air directly from your furnace, maximizing efficiency and comfort without extra noise. - β€’ **Whole-Home Comfort Mastery:** Effortlessly humidifies large spaces up to 5,300 sq. ft., ensuring every corner of your home breathes easy. - β€’ **Trusted American Innovation:** Proudly designed and manufactured in the USA by AprilAire, pioneers in whole-home evaporative humidification since 1954. ## Overview The AprilAire 700M Whole-House Fan Powered Humidifier is a high-capacity, manual control evaporative humidifier designed to cover up to 5,300 sq. ft. It delivers 18 gallons of moisture per day, maintaining ideal indoor humidity levels (40%-60%) for health and home preservation. Featuring a built-in fan that integrates with your furnace system, it ensures efficient humidification with minimal noise. Manufactured in the USA by AprilAire, the industry leader since 1954, this unit offers reliable, precise manual humidity control with a built-in sensor, making it a trusted choice for whole-home comfort. ## Description Product Description AprilAire introduced the first evaporative humidifier for forced air furnace systems back in 1954. Since that time, AprilAire continues to lead the industry in whole home humidification systems. Our evaporative humidifiers work by piping water into the distribution tray located at the top of the humidifier. The water is uniformly distributed across the width of the tray and through a scientifically designed system of outlets. It flows by gravity over the Water Panel evaporator. Dry, hot air from the HVAC system is moved through the moisture-laden Water Panel evaporator. Natural evaporation takes place, the water is turned to vapor, and the humidified air is circulated throughout the home. INCLUDED IN THE BOX: Installation instructions and template, humidifier with built-in fan, 24 VAC transformer, manual humidifier control with sensor, saddle valve, solenoid valve, and Model # 35 Water Panel. From the Manufacturer The Aprilaire Model 700M Whole-House Humidifier features a built-in bypass damper. The bypass damper is conveniently labeled for both summer and winter settings, allowing you to set it for the entire season with no guesswork involved. The Aprilaire Model 700 Whole-House Humidifier is simply the best performing bypass humidifier on the market. Review: these should be manditory on all furnace installs. love this unit! - OK, this is exact same as the automatic except it has the manual humidistat. I was a bit nervous about installing this because of how little room to install this. There is literally 1/2" between the wall and this now. But works amazing! Straight forward installation. Installed on the supply plenum. One thing, don't use the saddlevalve they give you. Go buy a sharkbite valve. Super easy to install with no soldering required. List of supplies used. 1. Metal tape (duct tape for the plenum but made of metal) 2. Tin snipe. (To cut the plenum) 3. 3/4" sheet metal drill bit (titanium or better) 4. Sharkbite valve (connect to water line. Just push pipe in both sides((1/2" osd)) 5. Sharkbite 1/2" to 1/4" on/off valve 6. 1/4" osd foggy plastic hose (connects to the water inlet on humidifier) 7. 1/2" clear tube (for the drainage tube on humidifier to drai ) 8. 18x2 thermostat wire, wire nuts, and plastic tube to hide wires. 9. 1/2" copper tube. Maybe need only 3"-5" (extends the sharkbite valve) 10. 20' outdoor extension drop cord (only if you don't have plug near supply plenum) 11. Level 12. Electric drill 13. Yellow handle tin snips (yellow means cuts strait lines or curved) 14. #8 self tapping sheet metal screws. 1", and only 4-6 is needed. 15. Pipe cutter 16. 13mm open socket wrench Shut off breaker to furnace. Do not install before you do this. So, the toughest part on the install was cutting the plenum. I didn't have enough room for the drill to drill hole, but was creative and got one made. The instructions are the template for the humidifier base. Used a level and made sure it was on level. I chose to use the supply plenum to install so I wouldn't need to use hot water. Save a few gallons of water daily. After the square hole was cut, I used a hammer and pliers to make sure the edges were even. Then mounted the base, and screwed it in. Next, used the metal duct tape (do not use regular tape, must be the metal kind) to tape around the base. Take your time and make it look good. Next, wiring. The bottom of the base has two brown wires. Using the 18x2 thermostat wires, connect one brown wire to the common circuit on the furnace circuit. Should be labeled C. Next, connect the other wire to the W (24v aux). Connect that wire to one terminal on the humidistat. First mount the humidistat where you want it. After the the power wire is connected to the humidistat, add another wire to the other post in the humidistat. Doesn't matter which one you use. Take that wire and connect it to the other brown wire on the base of the humidifier. Next is the water. If you have a water softener, you will be using the copper line going from there to the water heater. Shut off the main valve and grab a small bucket (water will drain from the line) and place under where you want to install the sharkbite adaptor. Use a black marker and mark the pipe. Then measure 1" both left and right. This is where you want to make your cut. Cut the pipe in both spots so you have a 2" space between ends. Slide the sharkbite adaptor in between and press the adaptor hard in each side. It will lock in to place. Cut a 3"-5" piece of spare copper pipe and push in the middle of the adaptor. Then attach the 1/2" to 1/4" sharkbite valve. Push it hard and it snaps in. Take off the 1/4" but and the copper coupling inside. Slide the foggy 1/4" tube through the but and then the coupling and in to the valve. Using a #13 wrench, tighten the but down as much as you can without breaking it. Connect the other side of the tube to the bottom of the humidifier base. Using the same method of through the but and coupling, then tighten down a lot. Otherwise this will leak. Next connect the 1/2" drain line. Run it from the bottom of the humidifier base to your drain near the water heater or softener. If there isn't one, you will need to buy a pump and attach it to there and pump it out of the house or to a drain. Last, use the extension cord, connect from outlet to plug on the humidifier. Use the black tube to conseal the wires if you want. Turn on the water to make sure no leaks. If there are some at the valve and base of humidifier, tighten those nuts down. It will stop leaking. May seem like you will break the sylanoid on the base, but it won't. Turn on the furnace breaker, set the heat to high to you can monitor the humidifier. It should be working fine. Alternative install. Use the transformer and connect to the HUM spot on the circuit board and the other to Neutral, the the humidistat to one of the back side and other goes direct to the brown wire on the base of humidifier. I am not a HVAC tech. So if you have questions I can't really help. But installing yourself will take 3-5 hours depending on trips to the hardware store. It will also save you between $350-$500. The total cost of the parts were right around $100. But because I didn't have the drill bit, the pipe cutter, yellow tin snips, metal tape, extension cord, or tubing. If you have those, the sharkbite adaptors will be around $25. So far we have felt an immediate impact on the air quality. Well worth the price. Review: Perfect replacement for 700M - I barely write review, but let me tell ya something. The new 720M is 10x better than the 700M. Uses very little water, does not leak and quality is amazing. No noise at all. Low power and great functionality. Best of all, it fits in the same cutout as the 700M! It’s basically a plug and play if you have an older 700M or 760 series unit. Get it! ## Features - BUY WITH CONFIDENCE This humidifier was designed and manufactured in the USA by AprilAire – the inventor of the whole home evaporative humidifier, and the leader in indoor air quality solutions - FULL COVERAGE up to 5,300 square feet in tightly built homes with a capacity of 18 gallons per day - MANUAL HUMIDIFIER with a single sensor built into the standard control monitors indoor relative humidity for use in manually setting the percent humidity in your home - BUILT-IN FAN pulls heated air directly from the furnace through the humidifier - HUMIDITY FOR HEALTH AprilAire Humidifiers can help you maintain optimal humidity in your home of 40% – 60% so you’ll feel more comfortable while also preserving items in your home susceptible to damage from changing humidity or dry conditions ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00DJVISBK | | Best Sellers Rank | #524,069 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #429 in Humidifiers | | Brand | Aprilaire | | Brand Name | Aprilaire | | Capacity | 18 G/day | | Color | Gray | | Control Method | Touch | | Customer Reviews | 4.6 out of 5 stars 888 Reviews | | Filter Type | Evaporative | | Floor Area | 4200 Square Feet | | Global Trade Identification Number | 00686720207006, 00686720704000 | | Included Components | 24VAC Transformer, Humidifier Control, Valves, Instructions, 5ft Cord | | Item Dimensions D x W x H | 11.35"D x 15.91"W x 18"H | | Item Shape | Rectangular | | Item Type Name | Humidifiers Evaporative | | Item Weight | 11.7 Pounds | | Manufacturer | Research Products Corporation | | Material | Plastic | | Model Name | Humidifiers Evaporative | | Model Number | 700M | | Operation Mode | Evaporative | | Other Special Features of the Product | Adjustable Humidity Control, Auto Shut Off, Humidistat | | Part Number | 700MZ | | Power Source | ac | | Room Type | Whole-House | | Runtime | 0 minute | | Smart Home Compatibility | Not Smart Home Compatible | | Special Feature | Adjustable Humidity Control, Auto Shut Off, Humidistat | | UPC | 686720207006 068672070400 686720704000 | | Unit Count | 1.0 Count | | Voltage | 120 Volts (AC) | | Warranty Description | 5 Year Manufacturer | | Wattage | 120 watts | ## Product Details - **Brand:** Aprilaire - **Capacity:** 18 G/day - **Color:** Gray - **Floor Area:** 4200 Square Feet - **Special Feature:** Adjustable Humidity Control, Auto Shut Off, Humidistat ## Images ![AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray - Image 1](https://m.media-amazon.com/images/I/71AG9QVe6DL.jpg) ![AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray - Image 2](https://m.media-amazon.com/images/I/71dyQYy78TL.jpg) ![AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray - Image 3](https://m.media-amazon.com/images/I/719kFbyO7WL.jpg) ![AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray - Image 4](https://m.media-amazon.com/images/I/71RRnKXNJXL.jpg) ![AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray - Image 5](https://m.media-amazon.com/images/I/81Sdbu2lsGL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ these should be manditory on all furnace installs. love this unit! *by R***Y on November 4, 2013* OK, this is exact same as the automatic except it has the manual humidistat. I was a bit nervous about installing this because of how little room to install this. There is literally 1/2" between the wall and this now. But works amazing! Straight forward installation. Installed on the supply plenum. One thing, don't use the saddlevalve they give you. Go buy a sharkbite valve. Super easy to install with no soldering required. List of supplies used. 1. Metal tape (duct tape for the plenum but made of metal) 2. Tin snipe. (To cut the plenum) 3. 3/4" sheet metal drill bit (titanium or better) 4. Sharkbite valve (connect to water line. Just push pipe in both sides((1/2" osd)) 5. Sharkbite 1/2" to 1/4" on/off valve 6. 1/4" osd foggy plastic hose (connects to the water inlet on humidifier) 7. 1/2" clear tube (for the drainage tube on humidifier to drai ) 8. 18x2 thermostat wire, wire nuts, and plastic tube to hide wires. 9. 1/2" copper tube. Maybe need only 3"-5" (extends the sharkbite valve) 10. 20' outdoor extension drop cord (only if you don't have plug near supply plenum) 11. Level 12. Electric drill 13. Yellow handle tin snips (yellow means cuts strait lines or curved) 14. #8 self tapping sheet metal screws. 1", and only 4-6 is needed. 15. Pipe cutter 16. 13mm open socket wrench Shut off breaker to furnace. Do not install before you do this. So, the toughest part on the install was cutting the plenum. I didn't have enough room for the drill to drill hole, but was creative and got one made. The instructions are the template for the humidifier base. Used a level and made sure it was on level. I chose to use the supply plenum to install so I wouldn't need to use hot water. Save a few gallons of water daily. After the square hole was cut, I used a hammer and pliers to make sure the edges were even. Then mounted the base, and screwed it in. Next, used the metal duct tape (do not use regular tape, must be the metal kind) to tape around the base. Take your time and make it look good. Next, wiring. The bottom of the base has two brown wires. Using the 18x2 thermostat wires, connect one brown wire to the common circuit on the furnace circuit. Should be labeled C. Next, connect the other wire to the W (24v aux). Connect that wire to one terminal on the humidistat. First mount the humidistat where you want it. After the the power wire is connected to the humidistat, add another wire to the other post in the humidistat. Doesn't matter which one you use. Take that wire and connect it to the other brown wire on the base of the humidifier. Next is the water. If you have a water softener, you will be using the copper line going from there to the water heater. Shut off the main valve and grab a small bucket (water will drain from the line) and place under where you want to install the sharkbite adaptor. Use a black marker and mark the pipe. Then measure 1" both left and right. This is where you want to make your cut. Cut the pipe in both spots so you have a 2" space between ends. Slide the sharkbite adaptor in between and press the adaptor hard in each side. It will lock in to place. Cut a 3"-5" piece of spare copper pipe and push in the middle of the adaptor. Then attach the 1/2" to 1/4" sharkbite valve. Push it hard and it snaps in. Take off the 1/4" but and the copper coupling inside. Slide the foggy 1/4" tube through the but and then the coupling and in to the valve. Using a #13 wrench, tighten the but down as much as you can without breaking it. Connect the other side of the tube to the bottom of the humidifier base. Using the same method of through the but and coupling, then tighten down a lot. Otherwise this will leak. Next connect the 1/2" drain line. Run it from the bottom of the humidifier base to your drain near the water heater or softener. If there isn't one, you will need to buy a pump and attach it to there and pump it out of the house or to a drain. Last, use the extension cord, connect from outlet to plug on the humidifier. Use the black tube to conseal the wires if you want. Turn on the water to make sure no leaks. If there are some at the valve and base of humidifier, tighten those nuts down. It will stop leaking. May seem like you will break the sylanoid on the base, but it won't. Turn on the furnace breaker, set the heat to high to you can monitor the humidifier. It should be working fine. Alternative install. Use the transformer and connect to the HUM spot on the circuit board and the other to Neutral, the the humidistat to one of the back side and other goes direct to the brown wire on the base of humidifier. I am not a HVAC tech. So if you have questions I can't really help. But installing yourself will take 3-5 hours depending on trips to the hardware store. It will also save you between $350-$500. The total cost of the parts were right around $100. But because I didn't have the drill bit, the pipe cutter, yellow tin snips, metal tape, extension cord, or tubing. If you have those, the sharkbite adaptors will be around $25. So far we have felt an immediate impact on the air quality. Well worth the price. ### ⭐⭐⭐⭐⭐ Perfect replacement for 700M *by S***L on February 2, 2026* I barely write review, but let me tell ya something. The new 720M is 10x better than the 700M. Uses very little water, does not leak and quality is amazing. No noise at all. Low power and great functionality. Best of all, it fits in the same cutout as the 700M! It’s basically a plug and play if you have an older 700M or 760 series unit. Get it! ### ⭐⭐⭐⭐⭐ Eureka!! Wiring setup with Ecobee4 -- Works Perfectly! *by D***H on December 31, 2017* I got the Aprilaire 700M (manual) version because with a smart thermostat, you don't need an outdoor sensor to tell the temperature. The idea is that the relative humidity (RH) inside your house should decrease as the outside temperature also decreases. Otherwise you'll get condensation on the windows and other parts of your home, leading to frost, freezing, dry-rot in your attic or window sills, etc. The Ecobee4 knows the temperature at your location (via Wi-Fi connection) and has a "Frost Control" setting that will automatically adjust the home's humidity level accordingly; no need to use the manual humidistat and constantly change the humidity setting as temperatures change. I've attached a diagram of the exact wiring I used -- even the colors are the same. It took combining about 4 different diagrams that only told part of the story, a call to customer service, an email to an HVAC guy, and bit of trial and error (e.g. I had to learn not to use the HUM connection on my furnace because it's only charged when blowing heat) but my Aprilaire 700M and Ecobee4 now work PERFECTLY together! When I need humidity in my house, my thermostat will turn on the furnace fan and the humidifier to add humidity without heat... as well as with heat, if needed. IMPORTANT Instructions: 1) You DO NOT need to use/wire the humidistat control (dial-a-humidity level) because the Ecobee4 perfectly takes it's place (actually, it does a much better job). 2) You have to know that when you set up your humidifier with Ecobee, you have to tell it that it's a "steam" humidifier, NOT an evaporative one. This is not true, but it will allow the Ecobee to call for humidity even without heat blowing. 3) You need to purchase an extra relay to make the call for humidity without heat to work. Aprilaire recommends the Aprilaire 4851 relay. I'm not convinced there isn't a less expensive relay that will make this work, but I know the 4851 will work. 4) Take note that the G (green) wire needs to be disconnected from your furnace control board. This is according to the 4851 relay instructions. There are a few other oddities with the wiring too, so pay close attention. 5) Be sure to use 18-guage wire for 24 volt purposes (which is all this diagram shows) 6) I used the 2-wire setup for my Ecobee; there is a 1-wire installation, but I couldn't get it to work. 7) I did not need to use the transformer the Aprilaire 700M came with (because I didn't need extra 24v power). 8) When using no-heat with your humidifier, please note that Aprilaire recommends installing the humidifier on the hot-air service side of your furnace plenum, and to use hot water to flow into your 700M. This will allow the water to evaporate better. I'm going to add insulation around my 1/4" OD (outside-diameter) copper tubing (sold seperately needed for installation, with compression fasteners) to keep the water a little hotter. I used a SharkBite valve (Model # 24983A; 1/2" push-to-connect, 1/2" push-to-connect, and 1/4" compression fitting) to tap into my hot water line. The SharkBite fittings made it super easy to install onto my PEX hot water pipe. You may want to use something similar if you don't want to use the saddle valve the 700M came with (which I couldn't, nor did I want to run the risk). I had virtually no plumbing or electrical experience before doing this install, so you can do it too! I've attached a few other photos and the diagram that came with the 4851 relay, and the Ecobee4. I hope this helps! And enjoy your new perfectly comfortable home! p.s. Be sure to go to your electric company's website and look for a rebate on smart thermostats; the two main ones here in Colorado Springs both offer a $50 rebate!!! Free money. ## Frequently Bought Together - AprilAire 700M Whole-House Fan Powered Humidifier, Manual Control, Large Capacity, Up to 5,300 Sq. Ft., 18GPD, Gray - AprilAire 5845 Installation Kit for Whole Home Fan Powered Humidifier with Manual Control, Compatible with AprilAire 700M, Black - AprilAire 35 Water Panel Humidifier Filter Replacement for AprilAire Whole-House Humidifier Models 300, 350, 360, 560, 560A, 568, 600, 600A, 600M, 700, 700A, 700M, 760, 760A, 768 (Pack of 10) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/6275300-aprilaire-700m-whole-house-fan-powered-humidifier-manual-control-large](https://www.desertcart.vu/products/6275300-aprilaire-700m-whole-house-fan-powered-humidifier-manual-control-large) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-10*