990-13 Humidifier Vapor Pad Filter for GeneralAire 709 990 1040 1042

Humidifier Vapor Water Pad Filter 990-13 — 3-Pack Replacement for GeneralAire Models

Keep your whole-home humidifier running at peak efficiency with this 3-pack of 990-13 Replacement Evaporator Pad Filters, designed as a direct replacement for GeneralAire 990-13 G13 humidifier units. Made from durable wood pulp paper media, these vapor pads efficiently trap hardness minerals in the water, preventing white powder deposits from circulating into your room air and settling on surfaces. Made in Mainland China.

Key Features

• Compatible Models: Fits GeneralAire 709, 990, 1040, 1042, 1137, and SL16 humidifiers
• Replaces: GeneralAire 990-13 / G13 evaporator pad media filter
• Mineral Capture: Effectively traps water hardness minerals to prevent white powder from entering your living space
• Easy Installation: Tool-free swap — simply slide out the old pad and insert the new one
• Pack of 3: Stock up and stay on schedule with your maintenance routine
• Recommended Replacement Cycle: Every 2–3 months, depending on water hardness and usage conditions
• Material: Wood pulp paper media for reliable moisture absorption and mineral filtration

What's in the Box

• 3 × Humidifier Vapor Water Pad Filter (990-13)

Why Replace Your Humidifier Pad Regularly?

Over time, evaporator pads become coated with mineral scale from hard water, reducing moisture output and forcing your humidifier to work harder. Replacing the pad every 2–3 months helps maintain optimal humidity levels in your home and extends the life of your humidifier. The U.S. Environmental Protection Agency (EPA) recommends maintaining indoor relative humidity between 30–50% for comfortable, healthy air quality — a well-maintained humidifier pad is essential to achieving this. Learn more at EPA Indoor Air Quality Resources.

Installation Tips

1. Turn off your humidifier and disconnect power before servicing.
2. Open the humidifier cabinet and locate the evaporator pad tray.
3. Slide out the old 990-13 pad and dispose of it.
4. Insert the new replacement pad into the tray — no tools needed.
5. Close the cabinet, restore power, and resume normal operation.

Note: Slight color variation may occur due to screen display settings. Measurement tolerance is ±1–3 cm.

Frequently Asked Questions

Q: Which humidifier models are compatible with the 990-13 replacement evaporator pad filter?

A: This 990-13 vapor water pad filter is compatible with GeneralAire models 709, 990, 1040, 1042, 1137, and SL16. It is a direct replacement for the GeneralAire 990-13 G13 evaporator pad media filter.

Q: How often should I replace the 990-13 humidifier vapor pad?

A: It is recommended to replace the humidifier vapor pad every 2–3 months. However, if your home has hard water or your humidifier runs frequently, you may need to replace it more often to maintain efficient performance and prevent mineral buildup.

Q: What material is this humidifier evaporator pad made from?

A: The 990-13 replacement pad is made from wood pulp paper media, which is designed to absorb water effectively while capturing dissolved minerals to help prevent white powder residue from being dispersed into your home's air.

Q: Is installation of the 990-13 humidifier pad difficult?

A: Not at all. Installation is tool-free — simply open your humidifier cabinet, remove the old evaporator pad, and slide the new one into place. The entire process typically takes just a few minutes.