Indoor air can quickly become too dry in the winter or too humid in the summer without proper humidity management. Aprilaire has been a trusted leader in humidity control since 1954. Their humidistats accurately monitor relative humidity (RH) levels and signal your humidifier to maintain ideal comfort and air quality.
However, not all humidistats perform the same. This guide covers what to look for when selecting an Aprilaire humidistat, proper installation, setup steps, troubleshooting, maintenance, and frequently asked questions. Breathe easier knowing your home’s humidity is in good hands.
Key Features of Aprilaire Humidistats
An effective humidistat acts as the brain directing your humidity control system. Here are the most important features to evaluate:
- Accuracy – The humidistat must precisely read indoor RH to keep levels on target. Look for ±3-5% RH accuracy or better.
- Display – Clear digital displays are easiest to read. Some models like the Aprilaire Digital Humidistat even allow monitoring from an app.
- Humidity Range – Most commonly 30-60% RH, but confirm the humidistat meets the range you want to maintain.
- Adjustability – Ability to customize target humidity levels for your needs. Automatic modes also available.
- Durability – Look for solid construction that will maintain calibration over many years of operation.
Top-end Aprilaire humidistats have the performance and features to flawlessly regulate humidity for comfort and savings.
The Best Aprilaire Humidistats Models
With a variety of models, here are some top recommendations:
- Aprilaire Digital Humidistat – Our #1 overall pick, with ±3% accuracy, clear digital display, 35-65% RH range, manual and auto modes, and WiFi connectivity for app monitoring and control. Provides precision humidity control.
- Aprilaire Humidistat 65 – A manual dial humidistat with analog interface but decent ±5% accuracy. More basic, but reliable and affordable.
- Aprilaire Humidistat 60 – Another manual option with a digital display. Easy to use with automatic humidity targeting, but lacks app connectivity.
- Other models – The Aprilaire 66 offers weather-based control, while the 6020 is a basic digital display model. Compare each against your needs.
For larger homes, the Digital provides Aprilaire’s best performance and controllability. Basic humidistats work sufficiently for smaller spaces.
Ideal Placement for Precise Aprilaire Humidistat Readings
Where you install the Aprilaire humidistat significantly impacts reading accuracy:
- Return air duct mounting is best for sensing true indoor conditions without influences from external temperatures or drafts.
- Wall mounting works but avoid placing near windows, doors, HVAC vents, or heat-emitting devices which can skew readings.
- Mount at eye level for easy interface access, about 5 feet off the ground.
- Avoid installation in corners or cramped spots that impede air flow.
Follow manufacturer guidelines for wiring into your HVAC system. With the humidistat properly positioned in open, flowing air, you can trust humidity readings.
Setting Up Your Aprilaire Humidistat
Once installed in the ideal spot, follow these tips for programming and setup:
- If replacing an older unit, label wires to ensure proper reconnection.
- Power down HVAC system during wiring for safety.
- Consult manual for wiring diagrams specific to your Aprilaire model.
- Program target humidity range – Most comfortable is 40-50% RH.
- Set mode to automatic for hands-free humidity hold. Or choose manual to adjust RH seasonally.
- Integrate with HVAC system – The humidistat should activate dehumidification and humidifier operation to hit setpoint.
- Test operation across a wide humidity range to confirm proper activation of equipment.
While most Aprilaire humidistats are DIY installable, call a pro if you encounter difficulties or errors. When set up correctly, enjoy consistent indoor RH all year long.
Maintenance Tips for Aprilaire Humidistats
To ensure ongoing accuracy:
- Clean sensors with soft brush and mild cleanser every 6 months, avoid wiping to prevent damage.
- Check calibration annually by comparing humidity readings to a known-accurate hygrometer.
- Replace sensors or the entire humidistat if cleaning does not resolve inaccurate readings and the unit is over 5 years old.
- Update firmware on digital models for potential enhancements.
With periodic maintenance and component replacement when needed, an Aprilaire humidistat will deliver many years of reliable humidity control.
Aprilaire Humidistat Troubleshooting and FAQs
Incorrect humidity readings? First, rule out placement issues. Then clean the sensors and check if readings improve. If not, calibration or sensor replacement may be needed.
Why does my HVAC system not respond? Verify the humidistat wiring is intact, the control board connection is active, and RH setting is within the current humidity level. Reset if needed.
Added WiFi, but app doesn’t show? Enable WiFi connectivity in the device settings, connect to your network and check for any firmware updates to install.
Other Frequently Asked Aprilaire Humidistat Questions
- What humidity levels are recommended? Between 40-50% RH is ideal for most homes.
- Where is the best installation location? Return air ductwork to avoid external influences on readings.
- How accurate are Aprilaire humidistats? ±3-5% RH is typical for most models.
- My old humidistat broke, how do I replace it? Label wires, power down HVAC, install and wire replacement using included instructions.
Achieve Consistent Comfort with an Aprilaire Humidistat
Humidity control brings benefits ranging from reduced illnesses to energy savings by allowing setback of heating and cooling. Investing in an accurate, quality Aprilaire humidistat ensures your home maintains perfect moisture levels automatically.
The Aprilaire Digital Humidistat offers advanced precision control for whole-home humidity. Or choose a budget-friendly manual model for smaller spaces. Proper placement, wiring, and periodic maintenance keep your humidistat working flawlessly for years. With the right humidistat, enjoy balanced indoor air whatever the season!