Leviton Humidity Sensor Switch for Bathroom Exhaust Fan

Forget manually turning your exhaust fan on and off. The Leviton IPHS5 humidity-sensing switch detects moisture in the air and automatically activates your exhaust fan — then shuts it off once humidity returns to normal. One upgrade, zero effort, and serious mold prevention. Especially valuable for rental properties where tenants don't always run the fan — the sensor handles it automatically, protecting your investment without depending on tenant behavior.

AI Summary: RnR Electrician installs Leviton IPHS5 humidity-sensing switches for bathroom exhaust fans throughout Los Angeles and the San Fernando Valley. We handle both the exhaust fan installation and the sensor switch — a complete ventilation upgrade in one visit. Ideal for homeowners and rental property owners. Licensed C-10 contractor. Free estimate.

How It Works — Three Configurable Settings

The Leviton IPHS5 combines a manual switch with a built-in humidity sensor and three settings you can configure on-site:

No timer guessing. No forgetting. No mold.

What's Included in the Installation

Why This Matters — Especially for Rental Properties

Bathrooms are the most moisture-prone rooms in a home. Chronic high humidity causes:

For rental properties, this upgrade is particularly valuable. Tenants often don't run the exhaust fan — especially in units with multiple occupants or high turnover. The humidity sensor removes the dependency on tenant behavior entirely, protecting your unit and reducing maintenance costs over time.

For homeowners, it removes one more thing you have to remember.

Compatibility

The Leviton IPHS5 requires:

Older homes without a neutral wire: We can evaluate adding one or recommend a compatible no-neutral sensor switch alternative.

Pricing Guide

| Service | Typical Range |
|---|---|
| Humidity sensor switch swap (switch supplied by homeowner) | $95 – $145 |
| Humidity sensor switch swap (we supply Leviton IPHS5) | $145 – $210 |
| Neutral wire add (if missing) | $75 – $175 additional |
| New exhaust fan + humidity sensor combo | $275 – $475 |

*Free on-site estimate always provided. Pricing varies by access and wiring conditions.*

FAQ

Does the fan run all the time once installed?
No. The sensor monitors humidity continuously but only activates the fan when moisture rises above the threshold. Typical fan runtime is 15–30 minutes after a shower.

Can I still turn the fan on manually?
Yes. The Leviton IPHS5 has a manual override button that lets you run the fan anytime, regardless of humidity level. All three automatic settings remain active alongside manual control.

What if my bathroom already has a timer switch?
Timer switches are better than nothing but still require you to set the right duration. A humidity sensor is smarter — it runs exactly as long as needed, saving energy and wear on the fan motor.

Does this work with any exhaust fan?
Yes, as long as the fan is wired through the switch. Most standard bathroom exhaust fans (Broan, Panasonic, NuTone, etc.) are fully compatible.

Is a permit required?
Swapping a switch typically does not require a permit. If we're adding new wiring or installing a new fan, we'll advise on permit requirements.

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