--- title: "Hood Ducting and Fan Installation" description: "A hood hung and ducted outdoors at full size, with a working damper and makeup air planned." url: "https://applianceinstallation.center/services/hood-ducting-and-fan-installation/" --- # Hood Ducting and Fan Installation A hood hung and ducted outdoors at full size, with a working damper and makeup air planned. ## What the hood ducting and fan installation involves. A hood ducting and fan installation is where a kitchen's ventilation is decided, because the fan the maker rates can only do its job through the duct it is given. It covers wall chimney hoods, island hoods, insert liners inside custom cabinetry, under-cabinet hoods, downdraft units behind a cooktop and over-the-range microwaves with a vented fan. The plan starts with the duct: the diameter the instructions call for, never reduced along the way; the shortest route to the outside, through the wall or the roof; as few elbows as possible; and a wall or roof cap with a damper that opens freely and closes against drafts. The hood is mounted at the height above the cooking surface its maker specifies, level and square to the counter, on blocking or a bracket that carries its weight. The ducting joints are sealed, and a run through cold space is insulated so grease-laden moisture does not condense inside it. Stronger fans raise the makeup air question: many local codes require outside air to replace what a large hood removes, and a house with a gas water heater or a fireplace has to be checked for backdraft. A recirculating model gets its charcoal filters. Power is a receptacle in the chimney or a junction box that an electrician provides. How the visit goes ### What it usually costs Moderate to highest · Wall, island, insert or downdraft hood mounted and ducted outdoors at full size, damper and cap fitted, fan and lights tested Swapping a hood onto an existing duct of the right size is the lighter case. A new route through a wall or roof, an island hood hung from the ceiling or ducting enlarged to meet a bigger fan takes much longer. ### Answers 3 problems Hood Not Drawing Smoke: Duct Size, Damper and Makeup Air Breaker Trips on the First Run: Leave It Off and Find Out Why · Appliance Installation Code on a New Unit: Setup Modes and Hookup Messages ### Comes up most on Cooking appliances ## Hood ducting and fan installation, step by step. Run each fan speed and the lights, confirm the damper opens, and check for backdraft on any gas-burning appliance nearby. 01 Check the model's required duct size, mounting height and maximum run against the kitchen's walls, ceiling and roof. 02 Mount the hood or liner level at the maker's height on framing or brackets strong enough for its weight. 03 Run the duct at full size to a wall or roof cap with a working damper, joints sealed and elbows kept few. 04 Connect the fan to the receptacle or junction box already provided, and fit charcoal filters on a recirculating model. 05 Run each fan speed and the lights, confirm the damper opens, and check for backdraft on any gas-burning appliance nearby. ## The problems it answers. 3 of them, from hood not drawing smoke: duct size, damper and makeup air to appliance installation code on a new unit: setup modes and hookup messages. [All problems](https://applianceinstallation.center/problems/) Most common ### Hood Not Drawing Smoke: Duct Size, Damper and Makeup Air 6 causes, cheapest first Before you call ### Tell us this when you book 1. The hood model and its fan rating, and the cooking appliance it sits over 2. Whether an old duct already goes outside, and through which wall, ceiling or roof 3. Whether there is a receptacle or a junction box where the hood will hang 4. Any gas water heater, furnace or fireplace in the house, which matters for makeup air It also answers - [**Breaker Trips on the First Run: Leave It Off and Find Out Why** 6 causes · hazard after a hookup](https://applianceinstallation.center/problems/breaker-trips-on-first-run/) - [**Appliance Installation Code on a New Unit: Setup Modes and Hookup Messages** 8 causes](https://applianceinstallation.center/problems/appliance-installation-code/) ## Moderate to highest, on the site's scale. Swapping a hood onto an existing duct of the right size is the lighter case. A new route through a wall or roof, an island hood hung from the ceiling or ducting enlarged to meet a bigger fan takes much longer. [Read the full cost guide](https://applianceinstallation.center/cost/) | Installation | Relative cost | | --- | --- | | [New gas range, cooktop, wall oven or dryer connected with a new connector, conversion kit fitted if needed, every joint leak-tested and the first flame read](https://applianceinstallation.center/services/gas-hookup-and-leak-check/) | | | [New supply line and quarter-turn stop for a refrigerator, ice maker, dish care machine or laundry pair, flushed and tested under pressure](https://applianceinstallation.center/services/water-supply-and-shutoff-connection/) | | | [Drain hose routed through a high loop, an air gap or into a standpipe, disposer knockout removed, first drain checked](https://applianceinstallation.center/services/drain-and-air-gap-connection/) | | | [Metal exhaust transition and reachable wall run fitted from a new dryer to the outside hood, joints taped, airflow confirmed](https://applianceinstallation.center/services/laundry-exhaust-run-installation/) | | | **Wall, island, insert or downdraft hood mounted and ducted outdoors at full size, damper and cap fitted, fan and lights tested** | moderate to highest | | [Built-in column, integrated drawer, wall oven or panel-ready model set to its cutout, anchored, connected and its panels or trim aligned](https://applianceinstallation.center/services/built-in-and-panel-ready-fitting/) | | | [Laundry pair stacked with the maker's kit or raised on pedestals, leveled, connected and run together](https://applianceinstallation.center/services/stacking-kit-and-pedestal-installation/) | | | [Anti-tip bracket fastened and engaged, leveling legs set, doors squared on a range, cold storage unit, dish care machine or laundry machine](https://applianceinstallation.center/services/anti-tip-bracket-and-leveling/) | | | [Old appliance shut off, disconnected, capped and carried out, opening cleaned, disposal or recycling arranged](https://applianceinstallation.center/services/old-appliance-disconnect-and-removal/) | | ## Where it comes up most. Most bookings: Cooking appliances. [All appliance types](https://applianceinstallation.center/types/) Often the same visit - [**Pre-installation site check** 3 problems in common](https://applianceinstallation.center/services/diagnostic-visit/) - [**Anti-tip bracket and leveling** 1 problem in common · lowest](https://applianceinstallation.center/services/anti-tip-bracket-and-leveling/) - [**Gas hookup and leak check** 1 problem in common · low to moderate](https://applianceinstallation.center/services/gas-hookup-and-leak-check/) ### Cooking appliances ## The makes we see it on. 37 makes on this site, and the hood ducting and fan installation on any of them. Each mark opens that make's own page. [All 37 brands](https://applianceinstallation.center/brands/) ## Hood ducting and fan installation, where we come out. The home, the climate and the building all change how the hood ducting and fan installation goes. These notes are about that, metro by metro. [All service areas](https://applianceinstallation.center/locations/) [Tampa Bay](https://applianceinstallation.center/locations/tampa-bay/) FL · 31 areas A new outdoor kitchen on a Tampa Bay lanai often gets its own hood, and hood ducting and fan installation there fits a unit rated for outdoor use and runs the duct so rain driven by summer storms cannot get into the fan. - [Hyde Park](https://applianceinstallation.center/locations/tampa-bay/hyde-park/) - [Davis Islands](https://applianceinstallation.center/locations/tampa-bay/davis-islands/) - [Palma Ceia](https://applianceinstallation.center/locations/tampa-bay/palma-ceia/) - [Westchase](https://applianceinstallation.center/locations/tampa-bay/westchase/) - [Carrollwood](https://applianceinstallation.center/locations/tampa-bay/carrollwood/) - [Belleair](https://applianceinstallation.center/locations/tampa-bay/belleair/) - [St. Pete Beach](https://applianceinstallation.center/locations/tampa-bay/st-pete-beach/) - [Palm Harbor](https://applianceinstallation.center/locations/tampa-bay/palm-harbor/) [Orlando](https://applianceinstallation.center/locations/orlando/) FL · 30 areas Orlando builder kitchens often came with a recirculating microwave above the cooktop, and when a homeowner upgrades, hood ducting and fan installation there checks whether a real duct to the outside exists or can be added through the attic. - [Winter Park](https://applianceinstallation.center/locations/orlando/winter-park/) - [Windermere](https://applianceinstallation.center/locations/orlando/windermere/) - [Dr. Phillips](https://applianceinstallation.center/locations/orlando/dr-phillips/) - [Bay Hill](https://applianceinstallation.center/locations/orlando/bay-hill/) - [Lake Nona](https://applianceinstallation.center/locations/orlando/lake-nona/) - [Heathrow](https://applianceinstallation.center/locations/orlando/heathrow/) - [Celebration](https://applianceinstallation.center/locations/orlando/celebration/) [Miami / South Florida](https://applianceinstallation.center/locations/south-florida/) FL · 47 areas A new hood in a South Florida condo is usually hung under a cabinet over the old electrical box, and hood ducting and fan installation there sets it up for recirculation with the maker's charcoal kit, because the tower's walls cannot take a new duct. - [Brickell](https://applianceinstallation.center/locations/south-florida/brickell/) - [Coconut Grove](https://applianceinstallation.center/locations/south-florida/coconut-grove/) - [Coral Gables](https://applianceinstallation.center/locations/south-florida/coral-gables/) - [Pinecrest](https://applianceinstallation.center/locations/south-florida/pinecrest/) - [Key Biscayne](https://applianceinstallation.center/locations/south-florida/key-biscayne/) - [Aventura](https://applianceinstallation.center/locations/south-florida/aventura/) - [Sunny Isles Beach](https://applianceinstallation.center/locations/south-florida/sunny-isles-beach/) - [Bal Harbour](https://applianceinstallation.center/locations/south-florida/bal-harbour/) - [Miami Beach](https://applianceinstallation.center/locations/south-florida/miami-beach/) - [Golden Beach](https://applianceinstallation.center/locations/south-florida/golden-beach/) - [Weston](https://applianceinstallation.center/locations/south-florida/weston/) - [Boca Raton](https://applianceinstallation.center/locations/south-florida/boca-raton/) - [Palm Beach](https://applianceinstallation.center/locations/south-florida/palm-beach/) [New York Metro](https://applianceinstallation.center/locations/new-york/) NY · 75 areas In New York apartments a new hood usually cannot vent outside, so hood ducting and fan installation there fits a recirculating unit with the right charcoal filters, or connects to an existing building duct if the board has approved it. - [Upper East Side](https://applianceinstallation.center/locations/new-york/upper-east-side/) - [Upper West Side](https://applianceinstallation.center/locations/new-york/upper-west-side/) - [Tribeca](https://applianceinstallation.center/locations/new-york/tribeca/) - [SoHo](https://applianceinstallation.center/locations/new-york/soho/) - [Greenwich Village](https://applianceinstallation.center/locations/new-york/greenwich-village/) - [Battery Park City](https://applianceinstallation.center/locations/new-york/battery-park-city/) - [Brooklyn Heights](https://applianceinstallation.center/locations/new-york/brooklyn-heights/) - [Park Slope](https://applianceinstallation.center/locations/new-york/park-slope/) - [DUMBO](https://applianceinstallation.center/locations/new-york/dumbo/) - [Forest Hills](https://applianceinstallation.center/locations/new-york/forest-hills/) - [Great Neck](https://applianceinstallation.center/locations/new-york/great-neck/) - [Southampton](https://applianceinstallation.center/locations/new-york/southampton/) - [Scarsdale](https://applianceinstallation.center/locations/new-york/scarsdale/) [Houston](https://applianceinstallation.center/locations/houston/) TX · 36 areas Houston's pro-style gas kitchens pair large burners with large fans, and hood ducting and fan installation there matches the duct diameter to the fan's outlet and flags when the maker or local code calls for makeup air in a tight new house. - [River Oaks](https://applianceinstallation.center/locations/houston/river-oaks/) - [Memorial](https://applianceinstallation.center/locations/houston/memorial/) - [Tanglewood](https://applianceinstallation.center/locations/houston/tanglewood/) - [Greater Heights](https://applianceinstallation.center/locations/houston/greater-heights/) - [Kingwood](https://applianceinstallation.center/locations/houston/kingwood/) - [Bellaire](https://applianceinstallation.center/locations/houston/bellaire/) - [Bunker Hill Village](https://applianceinstallation.center/locations/houston/bunker-hill-village/) - [Piney Point Village](https://applianceinstallation.center/locations/houston/piney-point-village/) - [Hunters Creek Village](https://applianceinstallation.center/locations/houston/hunters-creek-village/) - [Sugar Land](https://applianceinstallation.center/locations/houston/sugar-land/) - [Cinco Ranch](https://applianceinstallation.center/locations/houston/cinco-ranch/) - [The Woodlands](https://applianceinstallation.center/locations/houston/the-woodlands/) - [West University](https://applianceinstallation.center/locations/houston/west-university/) [Chicago](https://applianceinstallation.center/locations/chicagoland/) IL · 50 areas Chicagoland hoods that vent through an outside wall face hard winters, and hood ducting and fan installation there fits a damper that closes firmly and a wall cap that keeps cold air and snow from coming back down the duct. - [Lincoln Park](https://applianceinstallation.center/locations/chicagoland/lincoln-park/) - [Near North Side](https://applianceinstallation.center/locations/chicagoland/near-north-side/) - [West Loop / Near West Side](https://applianceinstallation.center/locations/chicagoland/west-loop-near-west-side/) - [Wilmette](https://applianceinstallation.center/locations/chicagoland/wilmette/) - [Winnetka](https://applianceinstallation.center/locations/chicagoland/winnetka/) - [Glencoe](https://applianceinstallation.center/locations/chicagoland/glencoe/) - [River Forest](https://applianceinstallation.center/locations/chicagoland/river-forest/) - [Oak Park](https://applianceinstallation.center/locations/chicagoland/oak-park/) - [Hinsdale](https://applianceinstallation.center/locations/chicagoland/hinsdale/) - [Lake Forest](https://applianceinstallation.center/locations/chicagoland/lake-forest/) - [Highland Park](https://applianceinstallation.center/locations/chicagoland/highland-park/) - [Gold Coast](https://applianceinstallation.center/locations/chicagoland/gold-coast/) - [Lakeview](https://applianceinstallation.center/locations/chicagoland/lakeview/) [Los Angeles](https://applianceinstallation.center/locations/los-angeles/) CA · 95 areas In Los Angeles hillside houses a hood often vents through a roof above a vaulted ceiling, and hood ducting and fan installation there sizes the duct to the fan, seals every joint with foil tape and sets the cap to shed rain. - [Beverly Hills](https://applianceinstallation.center/locations/los-angeles/beverly-hills/) - [Bel Air](https://applianceinstallation.center/locations/los-angeles/bel-air/) - [Holmby Hills](https://applianceinstallation.center/locations/los-angeles/holmby-hills/) - [Brentwood](https://applianceinstallation.center/locations/los-angeles/brentwood/) - [Pacific Palisades](https://applianceinstallation.center/locations/los-angeles/pacific-palisades/) - [Santa Monica](https://applianceinstallation.center/locations/los-angeles/santa-monica/) - [Hancock Park](https://applianceinstallation.center/locations/los-angeles/hancock-park/) - [Studio City](https://applianceinstallation.center/locations/los-angeles/studio-city/) - [Calabasas](https://applianceinstallation.center/locations/los-angeles/calabasas/) - [Manhattan Beach](https://applianceinstallation.center/locations/los-angeles/manhattan-beach/) - [Palos Verdes Estates](https://applianceinstallation.center/locations/los-angeles/palos-verdes-estates/) - [Pasadena](https://applianceinstallation.center/locations/los-angeles/pasadena/) - [San Marino](https://applianceinstallation.center/locations/los-angeles/san-marino/) - [Malibu](https://applianceinstallation.center/locations/los-angeles/malibu/) [San Diego](https://applianceinstallation.center/locations/san-diego/) CA · 31 areas San Diego's coastal kitchens often open onto a patio, and hood ducting and fan installation there places the outside cap away from doors and windows so smoke leaves the house instead of drifting back in on the breeze. - [La Jolla](https://applianceinstallation.center/locations/san-diego/la-jolla/) - [Carmel Valley](https://applianceinstallation.center/locations/san-diego/carmel-valley/) - [Point Loma](https://applianceinstallation.center/locations/san-diego/point-loma/) - [Del Mar](https://applianceinstallation.center/locations/san-diego/del-mar/) - [Rancho Santa Fe](https://applianceinstallation.center/locations/san-diego/rancho-santa-fe/) - [Coronado](https://applianceinstallation.center/locations/san-diego/coronado/) - [Encinitas](https://applianceinstallation.center/locations/san-diego/encinitas/) - [Solana Beach](https://applianceinstallation.center/locations/san-diego/solana-beach/) [San Francisco Bay Area](https://applianceinstallation.center/locations/bay-area/) CA · 74 areas Bay Area induction remodels still need a hood, and hood ducting and fan installation there often reuses the old gas-era duct, checking that its diameter and route suit the new fan before the insert is fixed in the cabinet. - [Pacific Heights](https://applianceinstallation.center/locations/bay-area/pacific-heights/) - [Presidio Heights](https://applianceinstallation.center/locations/bay-area/presidio-heights/) - [Russian Hill](https://applianceinstallation.center/locations/bay-area/russian-hill/) - [Noe Valley](https://applianceinstallation.center/locations/bay-area/noe-valley/) - [Sea Cliff](https://applianceinstallation.center/locations/bay-area/sea-cliff/) - [Hillsborough](https://applianceinstallation.center/locations/bay-area/hillsborough/) - [Atherton](https://applianceinstallation.center/locations/bay-area/atherton/) - [Woodside](https://applianceinstallation.center/locations/bay-area/woodside/) - [Palo Alto](https://applianceinstallation.center/locations/bay-area/palo-alto/) - [Los Altos Hills](https://applianceinstallation.center/locations/bay-area/los-altos-hills/) - [Tiburon](https://applianceinstallation.center/locations/bay-area/tiburon/) - [Piedmont](https://applianceinstallation.center/locations/bay-area/piedmont/) - [Marina](https://applianceinstallation.center/locations/bay-area/marina/) For the heart of your home. ## Questions about the hood ducting and fan installation. ### Can a new hood be connected to the smaller duct from the old one? Reducing the duct below the size in the instructions chokes the fan, makes it louder and cuts the airflow it was bought for. The duct is enlarged to the required size where it can be reached, or a hood is chosen to suit the duct. ### What is makeup air, and when is it needed? It is outside air brought in to replace the air a hood removes. Many residential codes require it above a set fan rating, often around four hundred cubic feet per minute, and your local building department has the exact rule. ### Is a recirculating hood a real alternative to ducting outside? Where no duct route exists, a recirculating hood with charcoal filters catches grease and some odor. It returns the heat and moisture to the kitchen, so a ducted hood is preferred wherever a path outside can be made. --- **[Read on the site: Hood Ducting and Fan Installation](https://applianceinstallation.center/services/hood-ducting-and-fan-installation/)** **[Book a visit with ApplianceInstallation.center](https://applianceinstallation.center/schedule/)**