Ductless vs. Ducted Range Hoods

Range hoods use fans to draw up grease and steam, along with food odors and excess heat, but not all hoods perform the task equally well. The difference between average and effective largely depends on the type of ventilation available: ductless or ducted.

  • Ductless models do not vent to the outside of your house. The fan on a ductless range hood draws in air and circulates it through a charcoal filter, which traps grease and some odors, but it’s usually not as effective as an exterior-vented model. The less expensive of the two styles, ductless range hoods can cost as little as $50, and go up from there to several hundred dollars.
  • Ducted range hoods are more effective than their ductless counterparts, and they, too, have a wide price range. Ducted range hoods draw in cooking air, then whisk it outside your home via a wall vent or upward through the ceiling joists and roof. More affordable options start under $100, but homeowners who want a high-efficiency or designer ducted hood could pay well over $1,000.

The option for ductless or ducted also applies to the popular and space-efficient microwave-hood combinations. Homeowners shopping for a new combination unit often (mistakenly) focus primarily on the features offered by the microwave. But it’s also important to weigh a unit’s ventilation capabilities to make sure you’re selecting one that’s sufficiently effective and efficient for your needs.



My range hood did not come with instructions. We dont know how to install it

If your range hood did not come with instructions, call the manufacturer and ask for instructions or check their website. You can also check out this video on how to install a range hood.

We have many instructional videos that you can find here. If these don’t help you out, check out our installation guide.

8. Are the ductwork connections ready too?

Your contractor needs to know what type of range hood you’re getting to prep the connections properly.

For example, if you’re venting to the outside wall, you’ll need a wall cap. If you’re venting to the roof, you’ll need a roof cap.

You might require an adapter to fit the range hood opening to the ductwork. Do you have 6-inch, 7-inch, 8-inch, or 10-inch duct? (The standard size is 7 inches, but a range of diameters is possible.) Some range hoods come with round connections; other ones have rectangular connections. Compare the opening of the ductwork with the duct opening of the range hood.

A damper is another potential component you might need if you’re venting to the exterior of your home and want to stop outside air from getting in. When you turn on your hood, the damper will open to let out the air; when you turn it off, the damper closes and seals. You can have one inside and outside, or one at both spots.

Some hoods have two discharge locations.

The moral of the story is: Stay in good communication with your contractor and HVAC installer.

Pro Tip: Provide to your contractor the specifications and installation document of your range hood. Manufacturers list parts, adapters, and kits supplied with the product.

Phase 3 – Location Support

Installation Height

There are several factors that affect how high a range hood should be installed above the cooking surface. First and foremost, check out the range hood manufacturer’s recommendations. Typical range hoods are installed in the 26-to-30 inch range above the cooktop, although this may vary from a low of 18 to a high of 36 inches.

For best performance, Futuro Futuro recommends installing our range hoods at 26 to 28 inches above the cooktop. Since the air polluted from cooking doesn’t rise in a perfectly straight line, but spreads out rather aggressively, it’s a good idea to position the range hood low enough to give it a good chance to capture the smoke/steam.

Also, it’s recommended to position the range hood at a height where the lights will be below eye level, which also keeps the control panel within easy reach and makes cleaning easier.

Proper Support

One of the most dangerous problems with range hood installation is attaching the unit to sheet-rock alone. Regardless of the weight, any range hood should be attached to structural beams or joists, in order to provide proper long-term support. If there is no beam/joist at the intended range hood location, a cross-brace made from 2×4’s, 3/4-inch plywood, or other strong material, is an acceptable substitute.

If a range hood is attached to sheetrock, it may initially appear to be stable, but over time, as it’s being used, the sheetrock anchors will loosen. Make sure your installer attaches the range hood the right way from the start.

Wall-Mount Hoods – Additional Considerations

Range hoods should always be installed over a backsplash. Don’t cut or frame a hood into a backsplash, for several reasons:

  • It’s a hassle to cut the stone or tiles around the hood, especially if curved or unusual shape.
  • Visible grout lines never look good.
  • If maintenance or service is needed in the future, the hood will have to be cut out from the grout before the technical can perform service.
  • Higher risk of damage (dents or scratches) to the range hood.

There should be a space between cabinet walls and the range hood. Some architects and designers provide only enough space between the cabinets to accommodate the exact width of the hood. This is a bad idea for several reasons:

  • Lack of space makes installation more difficult.
  • Any miscalculation may result in the hood not fitting into the space at all.
  • If cabinets expand or shift over time, they may crush the hood, causing stainless steel to bulge, or in case of hoods equipped with a glass panel, the glass may crack.
  • The confined crevices will accumulate dirt & grease, and make cleaning more difficult.

To avoid all these issues, leave a space of at least 1/2 inch between the edge of the wall-mount range hood and the cabinetry.


You need the right ventilation for your kitchen to function smoothly and be enjoyable to cook in. But we find that ventilation is often an afterthought. And buying the right range hood and blower and configuring your ductwork properly actually requires careful consideration.

However, it’s hard to know all the details when you buy. That’s why it’s so important to double-check them before installation day arrives.

After you’ve gone through all these questions and followed up on any you don’t know the answers to with your contractor, you’ll be ready for a smooth install.

Author Metin Ozkuzey As the president of Designer Appliances, Metin Ozkuzey was inspired to start this blog after noticing that most of his customers are overwhelmed by choices.

How to Install a Range Hood Vent Through Ceiling

By following down steps, you can install a range hood like a professional.

Separate it’s all pieces

To make the whole process easier, you have to detach all of its parts to carry and install a hood easily. The parts you to detach are the fan, filter, lights, and electrical housing. After disconnecting, you must ensure to keep all of these things in a safe place to prevent any damage.

Outline the ceilingNow next step is to outline where you have to fit the range hood vent. Take measure tape and measure the size of the duct—Mark precise points with a marker. Now put up the range hood vent to check the size.

Electrical Drilling

After marking, the foremost step is to make holes with an electrical driller. Must make holes accurately, here if you made any mistake, there would be no solution for this mistake, and range hood will fell. Make two more holes for passing wires.

Use a reciprocating saw to cut the holes from one point to another.

Make a hole on the roof

After making holes with the electrical driller, the next step is to make a hole on the roof to see the roof’s range hood vents. You have to choose the exact and nearest location to the range hood vent to make holes in this step. Now take the cutter to make the hole.

Fix the detached parts

In this step, you need someone to help carry the cable clamp to install the wire carefully. Now put all parts in its exact position. After fixing, the next step is the mounting of a range hood.

Mounting of range hood

Now the primary step for which you made this whole effort is installing a venting range hood. Pass the upper part from the holes and fit it there. To prevent any hazard, make sure all parts are fixed correctly. One tip is don’t wrap this duct with any wrap and let them move to make its position by itself.

  • Vent cap over the duct: To prevent passing any particles, it’s essential to put a vent cap over the chimney with roofing tar to effectively seal the parts. Learn repairing chimney cap.
  • Final step: now, the last step is to see all parts are attached correctly? If the fan is detached, then connect it with exact connecting wires. Now turn the range hood on.

Range Hood Installation Considerations

If you’re a handy do-it-yourselfer, it’s relatively simple to switch out an existing range hood with a newer model. Moving a range hood’s location during a kitchen renovation or installing one for the first time, however, will require some accommodations.


The standard width of a range hood is 30 inches (matching the width of a standard range), although wider wall-mounted and suspended island models are also available for custom kitchen designs.


For microwave-hood combinations, the bottom of the cabinet above the range should be at least 30 inches above the cooking surface to leave room for the installation. Fortunately, many contractors install this cabinet configuration in new homes for just that reason. The 30-inch distance is also the preferred upper-cabinet height for a range hood without a microwave, although individual models may have different requirements; once you’ve picked a keeper, read and follow the manufacturer’s recommended height specifications.

Power supply:

If you’ve chosen a combination model, you must have an electrical outlet in the cabinet above the unit in order to power the fan motor and microwave. While it’s not required by building code, many new-home contractors will go ahead and install that designated outlet on a separate 15 or 20 amp circuit with enough juice to run a microwave. If you’re installing a hood for the first time and there’s no nearby outlet, an electrician must install one near the location before you can proceed. The specs on your unit will indicate its power needs. Not all simple range hoods draw enough power to necessitate a designated outlet, but microwave-hood combinations should have their own circuit.



Both single hoods and microwave-hood combination units come with templates that mark exactly where to predrill or cut holes for screws, a power supply, and vent. The template will also show you where to attach the bracket that supports a hood combo on an exterior wall. If you are installing an outside-venting range hood, but you’re not mounting it on an exterior wall, the model you select should have the option of upward venting, as you’ll have to run the ducting through the ceiling.

Photo: istockphoto.com

Photo: istockphoto.com

Steps for Installing a Range Vent Hood

  1. Use a 6-inch-diameter hole saw to cut a hole through the interior wall surface, directly above the range. Collect the dust with wet/dry vacuum while cutting the hole.
  2. If the hole saw can’t cut through the interior wall in one pass, stop cutting, remove the plaster from the hole, and continue drilling.
  3. If necessary, use a multi-tool to cut wood lath from the 6-inch hole.
  4. Replace the hole saw with a ¼-inch-diameter bit and drill through the backside of the wall sheathing to the outdoors.
  5. From outside, use the 6-inch hole saw to cut through the siding and wall sheathing.
  6. Make a mounting plate by cutting 6-inch-diameter hole through a piece of PVC trim.
  7. Hold the PVC plate against the house siding, and trace around it with a pencil.
  8. Use an angle grinder to cut the siding along the pencil lines.
  9. Apply bead of silicone adhesive around the hole in wall. Press the PVC mounting plate tight to the wall, and secure with screws.
  10. Use duct tape to attach a 6-inch-diameter elbow to the vent cap.
  11. From outside, slide the vent cap into the hole and secure it to the mounting plate with self-tapping screws.
  12. From inside the kitchen, slide an elbow through hole and onto vent cap elbow. Secure with duct tape.
  13. Screw the vent-hood mounting brackets to kitchen wall; be sure to drive the screws into wall studs.
  14. Slide the vent hood into the brackets and secure with screws driven into wall studs.
  15. Make the electrical connections to provide power to the vent hood’s light and exhaust fan.
  16. Install the vertical cover to conceal the exposed ductwork.

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