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Aprilaire Model 700 Automatic Whole House Power Furnace Humidifier for up to 4 vs AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Autom

Updated August 2026The Aprilaire Model 700 is the superior choice for larger homes needing robust humidity control, while the AprilAire 500 is a more budget-friendly option for smaller spaces.

The Aprilaire Model 700 is the superior choice for larger homes needing robust humidity control, while the AprilAire 500 is a more budget-friendly option for smaller spaces.

Why Aprilaire Model 700 Automatic Whole House Power Furnace Humidifier for up to 4 is better

larger coverage

Model 700 covers up to 4,200 sq. ft. vs 3,600 sq. ft. for 500

higher output

Model 700 releases up to 18 gallons of water per day

better health benefits

Model 700 alleviates more health issues related to dry air

Why AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Autom is better

lower price

AprilAire 500 costs C$400.00 compared to C$598.00 for Model 700

easier installation

AprilAire 500 includes a comprehensive installation kit

automatic control

AprilAire 500 has an automatic digital humidistat for precise control

Overall score

Aprilaire Model 700 Automatic Whole House Power Furnace Humidifier for up to 4
85
AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Autom
75

Specifications

SpecAprilaire Model 700 Automatic Whole House Power Furnace Humidifier for up to 4AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Autom
BrandAprilaireAprilaire
Model700500
TypePower FurnaceBypass Evaporative
Water PanelAnnual ReplacementAnnual Replacement
Warranty5 years5 years

Dimension comparison

Aprilaire Model 700 Automatic Whole House Power Furnace Humidifier for up to 4AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Autom

Overview of Both Humidifiers

When comparing the Aprilaire Model 700 Automatic Whole House Power Furnace Humidifier and the AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier, both products stand out for their functionality in maintaining optimal humidity levels in homes. The Model 700 is priced at C$598.00 and is designed for larger spaces, while the AprilAire 500 retails for C$400.00, catering to slightly smaller homes.

The Model 700 offers coverage for homes up to 4,200 square feet, making it ideal for larger residences. In contrast, the AprilAire 500 is suitable for spaces up to 3,600 square feet, indicating a slight limitation in its coverage area. Both products aim to enhance indoor air quality, but their target markets and functionalities differ significantly.

Humidity Control Features

The Model 700 excels with its built-in fan that pulls heated air directly from the furnace, ensuring efficient humidity distribution throughout larger areas. This model also releases up to 18 gallons of water per day, providing substantial moisture even in dry conditions. On the other hand, the AprilAire 500 incorporates an automatic digital humidistat that actively monitors the home's humidity levels and adjusts accordingly, removing impurities from the water before adding moisture to the air.

While both humidifiers aim to create a balanced indoor environment, the Model 700’s robust water output makes it more suitable for larger homes, whereas the 500's automatic control feature offers convenience for smaller spaces. The differences in their operational mechanisms cater to varying homeowner needs and preferences.

Health Benefits

Both humidifiers contribute significantly to health and comfort by addressing issues related to dry air. The Model 700 helps alleviate dry skin, sore throats, and flu symptoms, which are often exacerbated by low humidity levels. It ensures that moisture is evenly distributed, promoting overall family health.

In comparison, the AprilAire 500 focuses on preventing the formation of bacteria, viruses, and dust mites, which thrive in low humidity. This model also aids in preserving furniture and woodwork, making it an excellent choice for homeowners concerned about maintaining their property. While both products address health issues, the Model 700 offers broader benefits related to comfort, while the 500 emphasizes home preservation.

Installation and Maintenance

The installation process is simplified with the AprilAire 500, which comes with a comprehensive installation kit, including all necessary parts and instructions. This makes it a more accessible option for DIY enthusiasts or those looking to avoid hiring professional help.

The Model 700, while also user-friendly, does not specify an installation kit, which might require additional planning for homeowners. Maintenance for both units involves annual water panel replacement; however, the Model 700's lack of water tank filling adds to convenience, as it operates directly through the furnace system.

Price Comparison

Price is a critical factor when choosing between these two models. The Model 700 is priced at C$598.00, reflecting its higher capacity and advanced features tailored for larger homes. Conversely, the AprilAire 500 is more budget-friendly at C$400.00, appealing to homeowners looking for effective humidity control without breaking the bank.

While the price difference of C$198.00 may justify the additional features of the Model 700 for larger homes, the affordability of the 500 makes it an attractive option for those with smaller spaces. Ultimately, the decision may hinge on the balance between budget and specific home needs.

Coverage Area

Coverage area is a significant differentiator between the two humidifiers. The Model 700 can effectively serve homes up to 4,200 square feet, making it suitable for larger residences or those with multiple levels. This expansive coverage ensures that moisture reaches every corner of a bigger home.

In contrast, the AprilAire 500 is designed for homes up to 3,600 square feet, which could be a limiting factor for larger properties. Homeowners need to consider the size of their living spaces when selecting a humidifier, as inadequate coverage can lead to uneven humidity levels and compromised air quality.

Energy Efficiency

Energy efficiency is an essential consideration when choosing a humidifier, especially for those concerned about long-term operating costs. The Model 700’s built-in fan may consume more energy than the passive operation of the AprilAire 500, which relies on the existing blower fan in the HVAC system.

The AprilAire 500, with its automatic control system, optimally regulates humidity levels, potentially reducing energy consumption in the long run. Homeowners should weigh these factors against their specific energy efficiency goals and budgets, as both models offer different advantages in this regard.

Which should you buy?

Ultimately, the choice between the Aprilaire Model 700 and the AprilAire 500 depends on your specific needs and budget. If you have a larger home and prioritize robust humidity output and health benefits, the Model 700, priced at C$598.00, is likely the better option. However, if you are looking for a more affordable solution for a smaller space, the AprilAire 500 offers solid performance for C$400.00 with convenient installation and automatic humidity control. Consider your home's size, your health concerns, and your budget to determine which model will best meet your needs.

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Aprilaire Model 700 Automatic Whole House Power Furnace Humidifier for up to 4 vs AprilAire 500 12-gal. Whole-House Small Bypass Evaporative Humidifier with Autom | versusfinder