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AprilAire

AprilAire 620MKZ Whole-House, Large Bypass Evaporative Humidifier – 18 Gallons Per Day, Water Saving with Manual Control and Installation Kit for up to 5,300 Sq. Ft.

AprilAire 620MKZ Whole-House, Large Bypass Evaporative Humidifier – 18 Gallons Per Day, Water Saving with Manual Control and Installation Kit for up to 5,300 Sq. Ft.

Regular price $526.49 USD
Regular price Sale price $526.49 USD
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About This

  • Included Installation Kit – The installation kit includes a 6" Round Duct Collar, 6" Round Flex Duct (2 ft.), push-to-connect adaptor, Water Supply Tube (25 ft.), Drain Tube (10 ft.), Hose Clamp, 18/2 Thermostat Wire (10 ft.), (4) Mounting Screws, (8) Hex Head Screws, and (4) Twist-On Wire Nut Connectors
  • Best-In-Class Performance and Efficiency* – Recycles water to minimize water usage while maintaining optimal panel saturation for increased output *Vs. leading competitors' UL rated bypass humidifiers of similar size with 6" duct opening
  • Superior Capacity – Delivers 18 gallons per day of humidification and balances humidity quicker than ever
  • 55% Less Waterwater* – Built with superior sustainability in mind. The innovative recirculation valve recycles water to deliver 3X more water across the panel*, while simultaneously reducing wastewater and saving up to 4,650 gallons of water per year^ *Compared to AprilAire 600 Humidifier ^Vs. previous AprilAire models at rated capacity for 5-month season
  • Humidity for Health – Achieve balanced humidity in the home which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria, viruses, fungi, and dust mites
  • Simple Maintenance – The one-piece disposable HydroCore water panel cartridge quickly pops in and out for fast replacement and is made with recycled plastic. Annual maintenance is now easier than ever.
  • Adjustable Damper Positions - New intermediate damper positions provide a simple solution to optimize air flow for high pressure systems
  • Easy Installation – Innovative design now allows for imperfect installation, up to 3 degrees out of level
  • Leak Prevention – All the surfaces of the unit are designed to funnel towards the catch all drain basin at the bottom of the unit to help prevent leaks
  • Reversible Design – The bypass module can be reconfigured to fit tight installs and optimize performance on any furnace configuration. Easily install with the bypass on the left (standard configuration) or right (reconfigured).

Overview

  • Brand : Aprilaire
  • Special Feature : Adjustable Humidity Control, Auto Shut Off, Humidistat, Quiet
  • Color : Gray
  • Capacity : 18 G/day
  • Floor Area : 5000 Square Feet
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What Our Customers Say

Real reviews from real customers

S

Sarah M.

Verified

The quality of the bedroom furniture exceeded my expectations. The mattress is incredibly comfortable and has improved my sleep quality significantly.

May 15, 2026
J

James K.

Verified

Absolutely love my new bed frame! It's sturdy, elegant, and fits perfectly in my bedroom. The delivery was fast and assembly was straightforward.

May 10, 2026
E

Emily R.

Verified

The pillows are a game changer! They provide the perfect support and I wake up without any neck pain. Highly recommend Soft Frame products.

May 8, 2026
M

Michael T.

Verified

Outstanding customer service and premium quality furniture. The nightstand is beautifully crafted and adds a touch of elegance to my bedroom.

May 5, 2026

Soft Frame


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Frequently Asked Questions

Our products are crafted with love and attention to detail, ensuring the highest quality for our customers.

We typically ship within 2–3 business days, and delivery usually takes 3–8 business days depending on your location. Some products may take longer to arrive. If there are any delays, we will notify you by email.

We offer a 30-day return policy for all unused items in their original packaging. Customer satisfaction is our priority!

We currently ship within the United States only. Unfortunately, we are unable to ship to other countries at this time.