Broan-NuTone AE110 InVent Flex 110 CFM Bathroom Fan - Quiet

In this review of the Broan-NuTone AE110 InVent Flex fan the bottom line is straightforward: this is a practical, ENERGY STAR certified exhaust fan for homeowners who need reliable, room-side installation and steady ventilation up to about 105 sq. ft. The biggest reason to buy is its combination of efficient 110 CFM airflow and TrueSeal damper technology, which reduces air leakage and improves overall home performance. The unit also pairs with a NuTone WVK2A flexible wall ducting kit for a complete replacement job without attic access.

Key Features

• ENERGY STAR certified: Provides efficient 110 CFM ventilation while using less energy than non-certified fans, lowering operating cost over time.
• Quiet operation: Rated at 1.0 sones so the fan runs relatively quietly and keeps bathroom noise to a minimum during use.
• TrueSeal damper technology: Cuts air leakage by up to 50% versus competitive models, which helps reduce drafts and improve blower-door performance.
• Room-side retrofit installation: Designed for retrofit installs from inside the room with an ExDuct connector so attic access is not required.
• Complete ducting kit included: The NuTone WVK2A 9-piece kit adds 5 ft of 4-in flexible ducting, a 3-in to 4-in adapter and durable resin parts to replace old duct runs.

Who It's For

This fan suits homeowners renovating bathrooms or replacing an old exhaust fan who want an ENERGY STAR model that balances airflow and noise. It is also a good choice for renters or DIYers who need a straightforward retrofit that can be completed from the room-side without attic work.

Those who need ultra-silent operation below 1.0 sones or specialized smart features should look elsewhere; similarly, very large spaces beyond about 105 sq. ft. will require a higher CFM model to clear humidity quickly.

Pros & Cons

Pros

• Easy to install in retrofit situations with room-side access, saving time and hassle.
• Effective 110 CFM airflow clears humidity and reduces fogged mirrors after showers.
• TrueSeal damper reduces backdrafts and air leakage for better home efficiency.
• The NuTone WVK2A ducting kit provides all required 4-in flexible ducting and adapters for a tidy replacement.

Cons

• Noise level is rated at 1.0 sones and while many find it quiet, some users report it is not as silent as premium models.

Specifications

Brand	Broan-NuTone
Model	AE110 InVent Flex
Airflow	110 CFM
Sound level	1.0 sones
Duct diameter	4 in (flexible ducting included)
Coverage	Up to about 105 sq. ft.
Included kit	NuTone WVK2A 9-piece ducting kit with 5 ft 4-in duct and 3-in to 4-in adapter

Our Verdict

The AE110 InVent Flex is a sensible choice for most bathroom replacement projects because it combines ENERGY STAR efficiency, solid 110 CFM airflow and a retrofit-friendly design that avoids attic work. It delivers good value when paired with the WVK2A ducting kit, though buyers seeking the absolute quietest operation may prefer a higher-end low-sone model.

Frequently Asked Questions

Can this fan be installed without attic access?
Yes. The AE110 is designed for room-side retrofit installation using the ExDuct connector so attic access is not required.

Does the included kit include ducting and adapters?
Yes. The NuTone WVK2A kit supplies 5 ft of 4-in flexible ducting, a 3-in to 4-in adapter and the resin fittings needed for a replacement run.

Is this fan quiet enough for a small bathroom?
It is rated at 1.0 sones, which most users find reasonably quiet, though some may notice it more than ultra-low sones specialty fans.