---
product_id: 586643259
title: "AprilAire 800 Whole-House Steam Humidifier, Automatic Steam Humidifier, Large Capacity Whole-House Humidifier for Homes up to 10,300 Sq. Ft., White"
brand: "aprilaire"
price: "฿121342"
currency: THB
in_stock: true
reviews_count: 4
category: "Aprilaire"
url: https://www.desertcart.co.th/products/586643259-aprilaire-800-whole-house-steam-humidifier-automatic-steam-humidifier-large
store_origin: TH
region: Thailand
---

# Electrode tech, no water filter needed Covers up to 10,300 sq ft Auto dual sensors for perfect humidity AprilAire 800 Whole-House Steam Humidifier, Automatic Steam Humidifier, Large Capacity Whole-House Humidifier for Homes up to 10,300 Sq. Ft., White

**Brand:** aprilaire
**Price:** ฿121342
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your home's air game—comfort that’s smart, seamless, and seriously impressive.

## Quick Answers

- **What is this?** AprilAire 800 Whole-House Steam Humidifier, Automatic Steam Humidifier, Large Capacity Whole-House Humidifier for Homes up to 10,300 Sq. Ft., White by aprilaire
- **How much does it cost?** ฿121342 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/586643259-aprilaire-800-whole-house-steam-humidifier-automatic-steam-humidifier-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

- • **Health & Home Preservation:** Reduces allergens, respiratory irritants, and protects wood, paint, and furnishings from dry air damage—breathe better, live better.
- • **Whole-Home Comfort Mastery:** Effortlessly humidifies spaces up to 10,300 sq ft—your entire home, perfectly balanced.
- • **Smart Auto-Humidity Control:** Dual sensors monitor indoor & outdoor conditions to maintain ideal 40-60% humidity 24/7—set it and forget it.
- • **Durable, Made in USA Quality:** Crafted by Aprilaire, the pioneer in whole-home humidification, backed by a 5-year warranty for peace of mind.
- • **No-Fuss Electrode Technology:** Innovative electrode system heats water efficiently without requiring purified water or filters—cut installation and maintenance costs.

## Overview

The AprilAire 800 is a high-capacity, automatic whole-house steam humidifier designed for homes up to 10,300 sq ft. Utilizing advanced electrode technology, it delivers 11.5 to 34.6 gallons of moisture daily without requiring water filtration. Featuring dual sensors for precise humidity control based on indoor and outdoor conditions, it maintains optimal 40-60% humidity to improve health and protect your home. Made in the USA by Aprilaire, it offers easy maintenance with replaceable steam canisters and a 5-year warranty.

## 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 – including steam humidifiers. AprilAire steam humidifiers use electrode technology and are simple to install, operate, and maintain. With electrode technology, electrical current flows between submerged electrodes, resistance of the water to the electric current heats the water. The submerged electrodes are found in a replaceable canister. At the end of a humidifier season, the canister – including the electrodes, is replaced. No cleaning, no scrubbing, simply replace the canister and you’re ready for the next humidifier season. Electrode technology requires impurities in the water to promote the transfer of electricity. For this reason, water filtration is not required with electrode technology, minimizing the complexity of the installation and on-going operating costs. This unit will operate with water hardness between 3 and 36 grains – a very wide range. If reverse osmosis or deionized water is present, plumb the steam humidifier to a water line before the water flows through the reverse osmosis or deionization equipment. INCLUDED IN THE BOX: Installation instructions, steam humidifier, Model 62 automatic digital humidifier control with sensor, outdoor temperature sensor, dispersion tube, steam hose (6 feet), 7/8 inch drain tubing (10 feet), hose clamps, saddle valve, mounting screws, Model # 80 steam canister From the Manufacturer The Aprilaire Model 800 Residential Steam Humidifier features truly automatic control, so there's no need to manually control the humidifier - though it can be installed in manual mode, if desired.

Review: If you need a good whole home humidifier, this is the one to get! - I read many reviews on this both good and bad before purchasing. I spoke with a handyman about helping me install one, he said Aprilaire is a good brand. After comparing EVERYTHING, I decided on The Aprilaire 800, glad I did. Shipping was super quick. We live in Utah and winters are brutal, near zero humidity and my wife has a serious problem with low humidity. Overall, installing the unit was not complicated, but it took us 4 hours to run the electrical wire, and about 4 hours to install the system. Installing the Electrical It took us several hours to run the 220V line from the basement to the top floor, but we did it without tearing up the house. We had to consolidate two smaller breakers to free up a space for the new 220 breaker. We ran the wire from the break box into the ceiling and upstairs through the walls. From the floor in the furnace room (two floors up), we ran flex conduit from the floor directly into the unit and connected the wire through the conduit to the unit. Installing the Main Unit First, we mounted the unit to the wall and hooked up the 220 power. Next we tapped into the cold water feed above the water heater by installing a copper "T" and a new valve and connected the unit water feed. Next we tapped into the the drain line for the A/C by installing a PVC "T" and connected the unit drain line. Finally, we drilled a hole in the side of the furnace outflow duct above the furnace, and inserted and mounted the steam jet into the duct, then connected the steam line from the unit. Installing the Controller You have to install the humidistat controller on an inflow duct as that's where it measures the humidity. Luckily, there is an intake vent on the opposite side of the wall so we mounted the humidistat controller on the wall inside the furnace room about 6 feet from the furnace. We drilled a hole in the drywall and through the metal duct, and mounted the humidistat controller over the hole. Next, we connected the wiring from the humidistat controller to the main unit. Next, we connected the second wiring from the humidistat controller to the furnace. We had a little trouble figuring out how to connect the wiring from the controller to the furnace to get it to operate the way we wanted, but with a little persistence and two of us reading the manuals, we finally figured it out (we wanted the humidifier to operate the furnace fan by itself and independently instead of only operating when the furnace is running - there are several configurable operating options). Operating the Unit We installed the filter/heater cartridge into the main and fired it up. The unit ran through the test cycle, filled with water, drained, made some noises and turned indicator lights on and off, but when it finished the test cycle, nothing happened. We thought we had done something wrong, but based on the way we had configured it, the Aprilaire unit will wait for an hour to start up the furnace fan unless it comes on by itself. You can preempt that by turning on the furnace fan manually for a few seconds. Once its running, it will control the fan itself. So you have to either wait for the furnace to run by itself in order to trigger the unit to operate, or you can force it on by turning on the furnace fan manually. We turned on the furnace fan which triggered the unit to start up, so we shut off the furnace fan, and the Aprilaire unit turned it back on by itself. Within less than a minute, we could feel some heat through the steam line so we knew it was working. My house is 2 stories about 2,800 ft sq. The temperature outside was about 10 F (-12 C), we keep our inside temperature at 78 F (25.5 C). The humidity was 4% before we turned on the system. The humidistat controller has a range from 0 to 7, we set it on 4. It took the system about 6 hours to bring the humidity up to 30% and we could feel the humidity in the house, it was great. The unit shut off at about 38% humidity, so we cranked it up to number 6. We ran the system all night, and when we woke up, it was 66%. It felt like Florida in mid-summer, oh yah!. Many of the windows were fogged up on the inside, some had water all over the window sills. OK, we went a little crazy, 66% is too high. We don't run the system at night after we go to bed anymore because the air is cool coming out of the ducts when it's just the humidity running, so we crank it up before bedtime to about 55%, and then shut it off. The humidity by morning is usually around 35% to 40% and we keep the house around 35% and 40% during the day until just before bed. We've been using this since September, it's now March (7 months). We couldn't be happier with this system. I bought a spare filter/heater cartridge in case ours stopped working, but so far, we have not used it. This thing automatically fills and purges the filter once in a while (not sure exactly how often it does it), but so far we've had this running pretty much all winter, and it has worked flawlessly.
Review: Very Good Design, Very Good Device - I went through two Honeywell Truesteam units before switching to the Aprilaire 800. The design of the Aprilaire is superior to the design of the Honeywell. It's really night and day. The Honeywell ran incredibly hot, and the circuitry is immediately above where the water boils (i.e., in a very hot place), and the parts are not near the quality of the Apriliare. Please trust me on this--the Honeywell is a toy compared to the Aprilaire. To be fair, the Honeywell only hooked up to 110 volt power, whereas the Aprilaire can hook up to 110 or 220 volts (another sign of a good design, BTW) as well as 11.5 or 16.5 amps. I have the Aprilaire hooked up to 220 at 11.5 amps and man does it work quick. It's amazingly fast. I've had it hooked up for three weeks now and it has easily kept the relative humidity at a near constant 45%. I ended up hooking it up to the Honeywell TrueIAQ humidistat that I already had installed, and everything is working beautifully. The Honeywell continually had issues, and I had to deal with them every single day until I just couldn't get it working anymore. The Aprilaire has had zero issues and I simply let it run. I don't take it for granted because I was trained by the Honeywell to check on it multiple times a day. Now whenever I check on the Aprilaire I do it with a smile on my face because it's always working exactly as it should. I'm so much more confident with this device because of the design. The other thing the Aprilaire handles well is that it works with either hard or soft water--each have their own pros and cons, whereas the Honeywell has to have soft water if you want to get any longevity out of it. I happen to have a water softener so this wasn't an issue with me, but I point it out because the Aprilaire is well designed even in this respect. If you have hard water you will replace the inner cannister more, but your unit will work well because the water will boil more efficiently. I should also note that my unit is a remote installation. It is installed in my linen closet about 6 feet away from my furnace. Even the hose that takes the steam from the unit to the furnace is superior when compared to the Honeywell. I haven't had any issue with the remote installation. When I first installed it and tested it, my humidistat was reading 45%, so I set humidity at 50% and it took only 40 minutes to get my entire 2000 square foot home up to 50%. I know it's not a big home, but it would've taken the Honeywell a lot, lot longer to make a 5% move. I'm telling you, it's night and day with this device compared to the Honeywell. Do not buy the Honeywell. Please. Look on the Internet by comparing the two and you'll see a lot of bad words for the Honeywell, including at least one of the reviews here at desertcart. Don't make the same mistake I made.

## Features

- BUY WITH CONFIDENCE This high output steam humidifier was designed with electrode technology and manufactured in the U. S. A. by Aprilaire – the inventor of the whole home evaporative humidifier, and the leader in indoor air quality solutions
- FULL COVERAGE up to 10,300 square feet in tightly built homes. Choose from 6 levels of output adding 11. 5 to 34. 6 gallons of moisture into the air per day based on voltage and installation
- AUTOMATIC HUMIDIFIER with dual sensors to monitor and respond to both outdoor temperature and indoor relative humidity to deliver optimum humidity 24/7 throughout the home – simply set it and forget it
- PURIFIED WATER NOT REQUIRED Electrode technology requires impurities in the water to promote the transfer of electricity. Water filtration is not recommended – minimizing installation complexity and operating costs
- HUMIDITY FOR HEALTH Aprilaire Humidifiers can help you maintain optimal humidity in your home of 40% – 60% which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses, fungi, and dust mites. In addition, 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 | B0CM85KV9F |
| Assembly required | Yes |
| Batteries required | No |
| Best Sellers Rank | #106,598 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #254 in Humidifiers |
| Brand | Aprilaire |
| Care instructions | Refer to Owner's Manual, Replace Steam Canister Yearly As Directed |
| Color | Gray |
| Customer Reviews | 4.5 4.5 out of 5 stars (479) |
| Floor Area | 10300 Square Feet |
| Global Trade Identification Number | 00686720008009, 00686720021596, 00686720118005 |
| Import | Imported |
| Included Components | 6-foot Steam Hose, 7/8-inch x 10-feet Drain Tubing, Valves, Installation Instructions |
| Is Discontinued By Manufacturer | No |
| Item Weight | 23 pounds |
| Item model number | 800 |
| Manufacturer | Research Products Corporation |
| Model Name | Humidifiers Steam |
| Number of pieces | 1 |
| Operation Mode | Steam |
| Product Dimensions | 7.13"D x 10.13"W x 20.88"H |
| Room Type | Whole-House |
| Shape | Rectangular |
| Special Feature | Adjustable Humidity Control, Auto Shut Off, Digital Display, Humidistat, Service Filter Indicator |
| Thickness | 19 Inches |
| UPC | 686720008009 686720118005 785577870972 |
| Unit Count | 1.0 Count |
| Voltage | 120 Volts (AC) |
| Warranty Description | 5 Year Manufacturer |

## Product Details

- **Brand:** Aprilaire
- **Capacity:** 11.5 G/day
- **Color:** Gray
- **Floor Area:** 10300 Square Feet
- **Special Feature:** Adjustable Humidity Control, Auto Shut Off, Digital Display, Humidistat, Service Filter Indicator

## Images

![AprilAire 800 Whole-House Steam Humidifier, Automatic Steam Humidifier, Large Capacity Whole-House Humidifier for Homes up to 10,300 Sq. Ft., White - Image 1](https://m.media-amazon.com/images/I/61DC-UZWceL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ If you need a good whole home humidifier, this is the one to get!
*by D***S on March 12, 2017*

I read many reviews on this both good and bad before purchasing. I spoke with a handyman about helping me install one, he said Aprilaire is a good brand. After comparing EVERYTHING, I decided on The Aprilaire 800, glad I did. Shipping was super quick. We live in Utah and winters are brutal, near zero humidity and my wife has a serious problem with low humidity. Overall, installing the unit was not complicated, but it took us 4 hours to run the electrical wire, and about 4 hours to install the system. Installing the Electrical It took us several hours to run the 220V line from the basement to the top floor, but we did it without tearing up the house. We had to consolidate two smaller breakers to free up a space for the new 220 breaker. We ran the wire from the break box into the ceiling and upstairs through the walls. From the floor in the furnace room (two floors up), we ran flex conduit from the floor directly into the unit and connected the wire through the conduit to the unit. Installing the Main Unit First, we mounted the unit to the wall and hooked up the 220 power. Next we tapped into the cold water feed above the water heater by installing a copper "T" and a new valve and connected the unit water feed. Next we tapped into the the drain line for the A/C by installing a PVC "T" and connected the unit drain line. Finally, we drilled a hole in the side of the furnace outflow duct above the furnace, and inserted and mounted the steam jet into the duct, then connected the steam line from the unit. Installing the Controller You have to install the humidistat controller on an inflow duct as that's where it measures the humidity. Luckily, there is an intake vent on the opposite side of the wall so we mounted the humidistat controller on the wall inside the furnace room about 6 feet from the furnace. We drilled a hole in the drywall and through the metal duct, and mounted the humidistat controller over the hole. Next, we connected the wiring from the humidistat controller to the main unit. Next, we connected the second wiring from the humidistat controller to the furnace. We had a little trouble figuring out how to connect the wiring from the controller to the furnace to get it to operate the way we wanted, but with a little persistence and two of us reading the manuals, we finally figured it out (we wanted the humidifier to operate the furnace fan by itself and independently instead of only operating when the furnace is running - there are several configurable operating options). Operating the Unit We installed the filter/heater cartridge into the main and fired it up. The unit ran through the test cycle, filled with water, drained, made some noises and turned indicator lights on and off, but when it finished the test cycle, nothing happened. We thought we had done something wrong, but based on the way we had configured it, the Aprilaire unit will wait for an hour to start up the furnace fan unless it comes on by itself. You can preempt that by turning on the furnace fan manually for a few seconds. Once its running, it will control the fan itself. So you have to either wait for the furnace to run by itself in order to trigger the unit to operate, or you can force it on by turning on the furnace fan manually. We turned on the furnace fan which triggered the unit to start up, so we shut off the furnace fan, and the Aprilaire unit turned it back on by itself. Within less than a minute, we could feel some heat through the steam line so we knew it was working. My house is 2 stories about 2,800 ft sq. The temperature outside was about 10 F (-12 C), we keep our inside temperature at 78 F (25.5 C). The humidity was 4% before we turned on the system. The humidistat controller has a range from 0 to 7, we set it on 4. It took the system about 6 hours to bring the humidity up to 30% and we could feel the humidity in the house, it was great. The unit shut off at about 38% humidity, so we cranked it up to number 6. We ran the system all night, and when we woke up, it was 66%. It felt like Florida in mid-summer, oh yah!. Many of the windows were fogged up on the inside, some had water all over the window sills. OK, we went a little crazy, 66% is too high. We don't run the system at night after we go to bed anymore because the air is cool coming out of the ducts when it's just the humidity running, so we crank it up before bedtime to about 55%, and then shut it off. The humidity by morning is usually around 35% to 40% and we keep the house around 35% and 40% during the day until just before bed. We've been using this since September, it's now March (7 months). We couldn't be happier with this system. I bought a spare filter/heater cartridge in case ours stopped working, but so far, we have not used it. This thing automatically fills and purges the filter once in a while (not sure exactly how often it does it), but so far we've had this running pretty much all winter, and it has worked flawlessly.

### ⭐⭐⭐⭐⭐ Very Good Design, Very Good Device
*by S***N on October 23, 2013*

I went through two Honeywell Truesteam units before switching to the Aprilaire 800. The design of the Aprilaire is superior to the design of the Honeywell. It's really night and day. The Honeywell ran incredibly hot, and the circuitry is immediately above where the water boils (i.e., in a very hot place), and the parts are not near the quality of the Apriliare. Please trust me on this--the Honeywell is a toy compared to the Aprilaire. To be fair, the Honeywell only hooked up to 110 volt power, whereas the Aprilaire can hook up to 110 or 220 volts (another sign of a good design, BTW) as well as 11.5 or 16.5 amps. I have the Aprilaire hooked up to 220 at 11.5 amps and man does it work quick. It's amazingly fast. I've had it hooked up for three weeks now and it has easily kept the relative humidity at a near constant 45%. I ended up hooking it up to the Honeywell TrueIAQ humidistat that I already had installed, and everything is working beautifully. The Honeywell continually had issues, and I had to deal with them every single day until I just couldn't get it working anymore. The Aprilaire has had zero issues and I simply let it run. I don't take it for granted because I was trained by the Honeywell to check on it multiple times a day. Now whenever I check on the Aprilaire I do it with a smile on my face because it's always working exactly as it should. I'm so much more confident with this device because of the design. The other thing the Aprilaire handles well is that it works with either hard or soft water--each have their own pros and cons, whereas the Honeywell has to have soft water if you want to get any longevity out of it. I happen to have a water softener so this wasn't an issue with me, but I point it out because the Aprilaire is well designed even in this respect. If you have hard water you will replace the inner cannister more, but your unit will work well because the water will boil more efficiently. I should also note that my unit is a remote installation. It is installed in my linen closet about 6 feet away from my furnace. Even the hose that takes the steam from the unit to the furnace is superior when compared to the Honeywell. I haven't had any issue with the remote installation. When I first installed it and tested it, my humidistat was reading 45%, so I set humidity at 50% and it took only 40 minutes to get my entire 2000 square foot home up to 50%. I know it's not a big home, but it would've taken the Honeywell a lot, lot longer to make a 5% move. I'm telling you, it's night and day with this device compared to the Honeywell. Do not buy the Honeywell. Please. Look on the Internet by comparing the two and you'll see a lot of bad words for the Honeywell, including at least one of the reviews here at Amazon. Don't make the same mistake I made.

### ⭐⭐⭐⭐⭐ Review
*by T***R on December 20, 2025*

Works very well does the job

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/586643259-aprilaire-800-whole-house-steam-humidifier-automatic-steam-humidifier-large](https://www.desertcart.co.th/products/586643259-aprilaire-800-whole-house-steam-humidifier-automatic-steam-humidifier-large)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-25*