What are the whole house humidifiers with the easiest installation process?
This page compares 10 whole house humidifiers with verified specifications and prices. Top options include AprilAire Model 700M 18 gal Whole-House Fan-Powered Evaporative Humidifier, AprilAire Model 620A 18 Gal Water-Saving Humidifier with Automatic Digital Control, AprilAire 300 Self-Contained Evaporative Humidifier. Prices range from £133 to £883. All data is sourced from manufacturer documentation and specialist retailers.
| Product ⇅ | Price ⇅ | Humidifier Capacity (gpd) ⇅ | Coverage Area (sq ft) ⇅ | Humidistat Included ⇅ | Auto Shutoff ⇅ | Water Tank Capacity (gal) ⇅ | Energy Efficiency Rating ⇅ |
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AprilAire Model 700M 18 gal Whole-House Fan-Powered Evaporative Humidifier
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£355.01 ≈ | 18 | 5300 | ✓ | ✓ | — | — |
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The AprilAire 700M is a fan-powered evaporative whole-house humidifier that delivers up to 18 gallons of moisture per day and covers homes up to 5,300 square feet. It includes manual humidity control, integrates with a forced-air HVAC system, and is designed for large, tightly constructed homes. ★ Ideal forThis suits people seeking the easiest whole-house humidifier installation because it includes a humidistat, water panel, transformer, outdoor temperature sensor, saddle valve, and installation instructions, while its fan-powered design connects directly to a ducted HVAC system.
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AprilAire Model 620A 18 Gal Water-Saving Humidifier with Automatic Digital Control
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£255.90 ≈ | 18 | 5300 | ✓ | — | — | — |
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The AprilAire 620A is a whole-house bypass evaporative humidifier delivering 18 gallons per day for homes up to 5,300 square feet. Its automatic digital control, water-saving recirculation valve, adjustable damper, and replaceable HydroCore water panel suit homeowners seeking efficient central humidification with simplified maintenance. ★ Ideal forThis product suits homeowners seeking whole-house humidifiers with an easier installation process because it includes an automatic digital control, installation template, reversible design, adjustable damper, and HydroCore cartridge system designed for faster setup and maintenance.
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AprilAire 300 Self-Contained Evaporative Humidifier
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£882.73 ≈ | 13 | 1950 | ✓ | — | — | — |
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The AprilAire 300 is a self-contained evaporative whole-house humidifier producing up to 13 gallons of moisture per day and covering up to 1,950 square feet. It includes a Model 65 digital manual humidistat, onboard humidity sensing, mounting brackets, and a saddle valve, making it suitable for homes with boilers, mini-splits, radiant heat, ductless systems, or forced-air heating. ★ Ideal forIt suits homeowners seeking easy installation because it is self-contained, includes mounting brackets and a digital humidistat, and supports simple between- or below-joist installation without requiring a central forced-air furnace.
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AprilAire Fan-Powered Evaporative Whole-House Humidifier with Manual Control and Installation Kit 700MKH
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£362.40 ≈ | 18 | 5300 | ✓ | — | — | — |
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This fan-powered evaporative humidifier delivers up to 18 gallons of moisture per day and is designed for homes up to 5,300 square feet. It includes a manual humidistat and installation kit, making it suitable for connecting to an existing ducted HVAC system. ★ Ideal forIt suits shoppers seeking an easier installation process because it includes a manual humidistat, water panel, transformer, outdoor temperature sensor, saddle valve, and installation instructions in the kit.
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AprilAire 600 Large Bypass Humidifier
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£295.84 ≈ | 17 | 5000 | ✓ | — | — | — |
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The AprilAire 600 is a whole-house bypass evaporative humidifier that delivers up to 17 gallons of moisture per day and covers homes up to 5,000 square feet. It includes an automatic digital humidistat, outdoor temperature sensor, water panel, and built-in bypass damper for ducted HVAC systems. ★ Ideal forThis model suits homeowners seeking easy installation because its built-in bypass damper reduces the number of parts required, while the included automatic digital humidistat simplifies setup and ongoing humidity control.
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AprilAire 500 Small Bypass Evaporative Humidifier
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£177.51 ≈ | 12 | 3600 | ✓ | — | — | — |
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The AprilAire 500 is a duct-mounted bypass evaporative humidifier that produces 12 gallons of moisture per day and covers tightly constructed homes up to 3,600 square feet. It includes an automatic digital humidistat and is designed for whole-house humidification through an existing HVAC system. ★ Ideal forIt suits homeowners seeking an easier-installation whole-house humidifier because it has a built-in bypass damper, direct water-line connection, included automatic digital humidistat, and fewer installation parts than larger models.
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AprilAire 620A Whole-House, Large Bypass Evaporative Humidifier
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£255.90 ≈ | 18 | 5300 | ✓ | — | — | — |
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The AprilAire 620A is a whole-house bypass evaporative humidifier rated for 18 gallons per day and coverage of up to 5,300 square feet. It includes an automatic digital humidistat, water-recirculation technology that reduces wastewater, a reversible bypass design, and a replaceable HydroCore water panel. ★ Ideal forIt suits homeowners seeking easy installation because it includes the automatic digital humidistat, transformer, saddle valve, installation template, reversible bypass configuration, and a distribution tray that tolerates up to 3 degrees of leveling variation.
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AprilAire 720A Fan-Powered Evaporative Humidifier
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£396.42 ≈ | 21 | 6250 | ✓ | — | — | — |
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The AprilAire 720A is a whole-house, fan-powered evaporative humidifier that delivers 21 gallons per day for homes up to 6,250 square feet. It includes automatic digital humidity control, a reversible fan design, a water-saving recirculation valve, and a one-piece HydroCore water panel. ★ Ideal forIt suits people seeking easy installation because it includes the automatic digital control, transformer, saddle valve, installation template, reversible fan module, and a distribution tray that tolerates installation up to 3 degrees out of level.
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AprilAire Model 300 Self-Contained Whole-House Evaporative Humidifier
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£488.14 ≈ | 13 | 1950 | ✓ | — | — | — |
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The AprilAire Model 300 is a self-contained evaporative humidifier producing up to 13 gallons of moisture per day for homes up to 1,950 square feet. It includes a digital humidistat, onboard humidity sensor, mounting brackets, saddle valve, water panel, and power cord, and works with ducted and ductless heating systems. ★ Ideal forIt suits homeowners seeking easy installation because it is self-contained, includes mounting brackets and installation components, and can be installed between or below joists without requiring a central forced-air furnace.
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AprilAire Model 400M Water Saver 17 Gal Whole-House Evaporative Humidifier
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£133.12 ≈ | 17 | 5000 | ✓ | ✓ | — | — |
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The AprilAire 400M is a water-saving whole-house evaporative humidifier rated for 17 gallons per day and coverage up to 5,000 square feet. It includes a manual humidistat, uses a reservoir to reuse water, and has safety features that help prevent overflows. ★ Ideal forThis model suits homeowners seeking easy installation because it includes a manual humidistat, water panel, transformer, saddle valve, and installation instructions, while its built-in safety floats provide automatic shutoff protection.
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