Kitchen exhaust upgrades: ask what leaves the house

Questions covered in this guide

Describe the cooking setup

List the cooking equipment, hood or microwave arrangement and any concern you want addressed. Note whether the existing device is known to vent outdoors or only circulates air in the room. If that is unclear, mark it for inspection. Give the contractor the actual appliance and room details instead of selecting a fan from a headline airflow number.

Ask for the complete exhaust explanation

EPA distinguishes range hoods that exhaust outdoors. Its cooking guidance also calls for grease-filter care. Have the installer identify the proposed discharge route and any changes needed around the cooking appliance. Ask the responsible professional to confirm applicable requirements, including any make-up-air or interaction concerns for the home. Do not assume a larger exhaust device can simply be attached to an existing route.

Compare the supporting work

Create rows for hood model, duct route, termination, controls, electrical work, cabinet changes and finish restoration. Ask which trade handles each part and whether any assessment is needed for other fuel-burning equipment or building pressure. Request the intended operation and maintenance instructions, including access to filters. If one proposal retains a recirculating arrangement, have the bidder clearly explain that scope rather than treating it as equivalent to outdoor exhaust. Keep the same appliance and cooking arrangement in every comparison.

Budget a usable completed installation

Request a complete installed total and a final operating demonstration. Save the product identifiers and route information with the kitchen records. Use a supplied-price worksheet for this work; the HVAC calculator does not design kitchen ventilation or price custom duct and cabinet alterations. The goal is an understandable proposal, with remaining air-quality concerns addressed by the appropriate professional rather than an unsupported promise from a fan upgrade.

Sources and supported claims

EPA distinguishes range hoods that exhaust outdoors.
Source ↗ · national · Checked 2026-10-12

Its cooking guidance also calls for grease-filter care.
Source ↗ · national · Checked 2026-10-12