COSMO COS-QB90 36 in. Haven Under Cabinet Range Hood - Powerful 500

Our review of the COSMO COS-QB90 36 in. Haven under cabinet range hood finds it best suited for homeowners who want a solid, no-frills ventilation upgrade that balances power and convenience. The single biggest reason to buy is its 500 CFM airflow delivered by twin centrifugal motors, which clears cooking smoke and odors quickly while maintaining a compact under-cabinet profile. It pairs a brushed stainless steel finish with dishwasher-safe permanent filters and bright LED lights, so it fits modern kitchens that value both performance and low ongoing costs.

Key Features

• 500 CFM airflow: Strong extraction power vents heavy cooking fumes quickly to help keep air in the kitchen fresh during and after heavy use.
• Twin centrifugal motors: Dual motors provide consistent suction across the three fan speeds for more reliable ventilation when cooking at different intensities.
• Push-button controls: Simple mechanical buttons make it easy to switch fan speeds, lights, and power without a steep learning curve.
• Dishwasher-safe filters: Durable ARC-FLOW stainless steel filters are permanent and save money because they can be cleaned in the dishwasher instead of replaced.
• Energy-saving LEDs: Bright 1.5-watt LEDs provide clear cooktop illumination while using very little power for long-lasting light.
• Top-vented ducted design: Comes standard ducted with a 7.9 in round top vent and offers an optional carbon filter kit for ductless installations (sold separately).

Who It's For

This range hood is ideal for homeowners or renters with an existing under-cabinet installation who want a reliable, high-extraction solution without adding a full canopy hood. The 36 in width suits standard three-burner ranges and fits beneath cabinets for a clean, integrated look.

Shoppers who need ultra-quiet operation in every setting or prefer a plug-and-play ductless hood should note limitations: noise depends on ducting and placement, and a carbon filter kit must be purchased separately for ductless use. Those seeking specialty finishes or advanced touch controls may want a different model.

Pros & Cons

Pros

• Strong suction power with 500 CFM and twin motors for effective smoke removal.
• Low long-term cost thanks to permanent, dishwasher-safe ARC-FLOW filters.
• Energy-efficient LED lighting gives bright illumination with minimal power draw.
• Clean stainless steel styling that matches common kitchen appliances.

Cons

• Noise level varies with installation; under some conditions it can be louder than expected.
• Comes ducted by default and requires an extra carbon filter kit for ductless setups (sold separately).

Specifications

Brand	COSMO
Model	COS-QB90 36 in.
Airflow	500 CFM
Controls	Push-button, 3-speed fan
Lights	2 x 1.5-watt LED
Filter Type	ARC-FLOW permanent dishwasher-safe filters
Dimensions	35.75 in W x 22 in D x 10 in H

Our Verdict

The COSMO COS-QB90 is a practical choice for cooks who need strong extraction and simple operation under standard cabinetry. With permanent filters, bright LEDs, and a 500 CFM rating it delivers good value for kitchens that want performance without complicated controls, though buyers should plan for proper ducting to get the quietest operation.

Frequently Asked Questions

Can this hood be used ductless?
Yes, but it ships standard as ducted; an optional carbon filter kit is available for ductless installations and must be purchased separately.

Are the filters replaceable?
The ARC-FLOW filters are permanent and dishwasher-safe, designed to be cleaned rather than replaced under normal use.

How loud is the hood in typical use?
Noise depends on ducting and installation; under optimal rigid ducting it can reach as low as 40 dB on the lowest speed, but actual levels may be higher with flexible ducting.