Zephyr · Installation
Zephyr Outdoor Hood Install: Duct, Power, Mount
Zephyr Pro Collection outdoor hoods need a 10" round duct, 120V/60Hz power to the hood housing, and either wall backing (Cypress) or a custom cabinet surround (Spruce).
By Reed · Updated November 10, 2026
What you need
- 10" round duct components
- 120V outlet or hardwire point in the hood housing
- Stud finder (Cypress wall mount)
- Install PDF for your exact model + size from zephyronline.com
Step by step
Pull the install PDF for your model + size
Cypress and Spruce have different mounting procedures, and 36" vs 48" have different cutout dimensions. Go to zephyronline.com and download the install PDF before cutting anything.
Plan the duct route — 20 equivalent feet or less
Count every 90° elbow as 10-15 feet of straight run. Target total equivalent length under 20 feet. Longer runs need a booster blower or an upsize to Zephyr's indoor Pro Collection.
Rough the 120V electrical to the hood housing location
Outdoor hood electrical connects inside the housing — typically a junction box. Route the cable to this point before finish work closes the wall or cabinet.
For Cypress: locate wall studs or install blocking
The hood weighs 40-60 lbs with the stainless chimney. Lag bolts into studs; if the hood location doesn't align with studs, install 2x6 blocking between studs during framing.
For Spruce: build the custom surround cabinet first
The insert drops into a custom cabinet you build. Leave access around the blower for service. The surround MUST be non-combustible (fire-rated drywall, cement board, stone) — not plain wood framing against the blower housing.
Mount the hood, connect duct, then power
Mount first (empty hood is lighter + easier to position). Connect the duct with sheet-metal screws + mastic for the airtight seal. Power last — test the blower, lights, and speed settings before closing up the housing.
Common mistakes
- Framing the hood opening before downloading the install PDF. The install PDF has the exact cutout. Framed too small and the hood won't drop; framed too large and the stainless rim won't cover the gap.
- Running the duct with flexible aluminum 'dryer' hose. Flex hose doubles the pressure loss. Zephyr specifies rigid galvanized round duct for the 1200 CFM rating.
- Powering the hood from a shared outdoor circuit. The blower pulls 400-600W at full speed. On a shared circuit with grill accent lighting + icemaker, the breaker trips. Dedicate a 120V 15A or 20A circuit.
Hands-on tips
- Order the duct components + hood at the same time — delivery lead times align and you can stage the install.
- Keep the install PDF in the enclosure after finishing — future service techs will need the exact model + mounting dimensions.
Questions people ask
Can I use the same hood indoors and outdoors (as the naming suggests)?
Yes — Zephyr labels these 'Outdoor/Indoor' meaning they're certified for both. The outdoor certification adds corrosion-resistant finish + sealed components to an otherwise indoor-capable hood.
Can I ducted-mount the Cypress on an exterior wall with the discharge going straight through?
Yes — a straight horizontal run of 3-5 feet through an exterior wall is the ideal install. Use an approved exterior wall cap with backdraft damper.
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