How high should I position the range hood above the stove?

How high should I position the range hood above the stove?

Range hood height does not depend on fan size

Range hoods of all sizes must be mounted either between 28 and 36 inches above the cooktop for indoor hoods or 36 to 42 inches above the cooktop for outdoor hoods.

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Phase 2 – Planning For Installation

Ducted or Ductless?

Range hoods can be installed in 2 configurations: ducted (“vented”) or ductless (“ventless” or “recirculating”). In a ducted installation, a duct carries the air from the range hood to the outside of the house; in a ductless installation, the air is scrubbed by an additional set of charcoal filters, and then returned to the kitchen.

Whenever possible, it’s recommended to connect a range hood to an outside duct. Not only will this result in better performance compared to ductless installations, but also lower noise.

Ducted Installation

You should always follow the manufacturer’s recommendations for the duct size and type when installing a range hood. Connecting a range hood to a smaller duct than specified will lead to loss of performance, and may even cause overheating problems leading to mechanical failure.

Almost all high-performance range hoods require the use of rigid ducting. The reason is simple: flexible ducting has ridged walls, which create turbulence. Instead of a smooth stream, the airflow is randomized, causing loss of performance and additional noise. Conversely, a rigid duct has smooth walls which help to keep the airflow laminar, which is especially important for range hoods that extract more than 200-300 cubic feet per minute.

Flexible ducting is also susceptible to cracking and rupture, which could cost hundreds of dollars to locate and repair. Rigid ducting may be slightly more expensive and a little harder to install, but it’s the right way to go. (Also, many local building codes require the use of rigid ducting for kitchen ventilation).

In a ducted installation, charcoal filters should not be used.

Ducted Installation – Outside Discharge

One of the most serious mistakes in range hood installation is terminating the duct in an enclosed space, e. g. the attic.

This will cause the range hood to operate improperly (if it operates at all), due to the back-pressure from the enclosed space. No matter how big the space is, air won’t be compressed – range hoods are high-airflow devices, not high-pressure.

In addition, venting warm moist air from the kitchen into attic space is a recipe for a major mold growth problem.

If the range hood doesn’t suction air after installation, or you actually feel air blowing out from the filter surface – definitely check the ductwork.

Ducted Installation – Duct Caps / Roof Caps

An outside duct that exits through a side wall should end with a duct cap, while roof-mounted ducts are sometimes terminated with a “U” shaped elbow, allowing the air to exit while keeping out the rain and snow.

Make sure the cap is the same size/diameter as the duct – using a smaller cap will cause problems with airflow and static pressure. Some installers think it’s OK to terminate a 6-inch duct with a 4-inch cap… but it’s not OK. Not even close.

Regardless of the type of termination, it’s important to have a damper (also called “backdraft” or “airflow controller”) at the end of the duct. The damper keeps outside air from back-flowing into the duct, as well as keeping out unpleasant surprises in the form of birds, insects, and squirrels.

It’s a good idea to check the condition of the duct cap at least once every couple of years – make sure it’s not clogged, and the louvers and/or backdraft operate freely and smoothly.

Ductless (Recirculating) Installation

Although it’s always recommended to connect the range hood to an outside duct, there are situations where this is simply impossible. Many high-rise condominiums and co-operative buildings prohibit any modifications that pierce the outside walls of the building. Ultra-modern condos with concrete ceilings and floor-to-ceiling glass windows also exclude the possibility of an outside duct.

The solution is installing the range hood in “ductless”, also called “recirculating” mode. In this situation, in addition to the metal filters that absorb the grease droplets, the hood uses charcoal filters (aka “carbon filters”) to absorb odors. After the air has been de-greased and de-odorized, it’s released back into the room.

If you intend to install your range hood in ductless mode, you would also need to:

  • Order charcoal filters (sold separately)
  • Make sure the charcoal filter is installed in the hood
  • Change the filter every 6 months

One of the most important things to keep in mind with ductless hoods, is that the charcoal filter should be changed regularly. Eventually, it becomes clogged with grease and odor particles, and will restrict airflow, which could cause the blower motor to overheat and fail prematurely. If you can’t replace the charcoal filter, it’s actually better to remove the it, than to operate the range hood with a clogged filter.

Replacement filters are available on our website, in the “Range Hood Accessories” category. Note that there are several types of carbon filters – please confirm which type your range hood model uses, prior to purchasing.

Electrical

The 2 most important considerations for the power connection to the range hood are: don’t cut the plug, and make sure the hood is connected to a dedicated line.

Don’t Cut The Plug

One of the most common problems with appliance installation is the electrical connection. The rule-of-thumb (and the UL regulation, BTW) is simple: if an appliance comes with exposed wires, it must be hardwired; if it comes with a plug, it must be plugged in. Following this rule will avoid problems with manufacturer’s warranty, as well as potential issues with inspection. All Futuro Futuro range hoods are equipped with a power cord that has a US/Canada standard, 3-pin grounded, 110-volt plug.

Some installers like to save a few minutes (versus installing an outlet) and cut the plug & splice it directly into the electrical line instead. Don’t let them do this! Not only is hardwiring a bad idea from the viewpoint of regulations and inspection, but if there’s a need to service the range hood, the technician must be able to disconnect the hood and plug in the diagnostic equipment. If the hood is hardwired, only a licensed electrician is allowed to modify the wiring. Avoid this problem by making sure the plug is not cut and the hood is plugged into an outlet.

Don’t Share The Line

Another good rule to follow is connecting each major appliance – including the range hood – to its own separate (dedicated) electrical line. It’s not a question of amperage (or “load”) on each wire, but rather ensuring that each appliance does not interfere with the others by causing voltage drops or introducing electrical noise into the line.

Devices like gas stove ignitors, refrigerator compressors, and microwave magnetrons, can place a momentary but significant load on the circuit. Mixing and matching different devices on the same line is never a good idea, but especially so when one of the devices is equipped with sensitive electronics or lighting transformers.

Please make sure there’s a dedicated line available for the range hood, that’s not shared with any other appliances, or dimmable lights. This will not only ensure longer service life, but makes troubleshooting and isolating potential problems a lot easier.

How do I know if my range hood is working?

Here are 3 signs to look for that may indicate a range hood issue: Issue #1: Even on the highest setting, the range hood will not clear the smoke from the room. Issue #2: The motor is very loud or constantly humming. Issue #3: Lights or buttons won’t work properly.

What is the best height for a wall oven?

An open door will add about 20 inches to the depth, so make sure that area is clear. Height: Around 27 to 29 inches of height is standard for most single wall ovens.

Phase 4 – Installation Process

Protective Film

The vertical chimney of Futuro Futuro range hoods is covered with a protective plastic film, to avoid scratches during installation. This film should not be removed until the installation process is complete – please make sure your installer is aware of this.

Miscellaneous

On some models, the grease filters may also feature a protective film (usually translucent blue). This film should be removed prior to using the hood.

Models that feature extensive glass elements, such as the Skylight, Luxor, Acqualina, Quest, Wave, and others, should NOT be lifted by the glass during installation. This may seem like common sense, but once in a while, installers think it’s a good idea to lift a 100-pound appliance by a decorative glass panel.

After installation, dirt & fingerprints can be easily removed by spraying some WD-40 or other non-abrasive cleaner onto a paper towel, and wiping the stainless steel surfaces. Do not use stainless steel polishes (for example, Barkeeper’s Friend), since they may scratch or discolor the surface.

What are Ducted and Ductless Range Hoods?

As mentioned above, exhaust hoods that are not connected to either wall ventilation or in-ceiling ventilation collect the air from your kitchen, condition it, and push it back into your kitchen as fresh air. Naturally, the impeller blade creating the air pressure that sucks the air in can only work to a certain point of air pressure; air pressure higher than the manufacturers specifications will result in a downgrade in performance and possibly damage to your range hood.

Does this mean ductless range hoods are bad? Not at all! They provide enough performance to keep the air condition in smaller kitchens clean and comfortable.

On the other hand, a range hood that’s connected to your home’s ductwork allows for more air pressure, and more air pressure equates to greater performance.

Keep in mind, though, there is a fine line between just enough and too much. In fact, some range hoods have been known to create negative pressure within the home. When this happens, your home begins to draw in air from new spaces to fill the gap.

Oftentimes, this can be from an attic, improperly weatherproofed doors and windows, and ceiling ducts, which are havens for dust, mildew, and bacteria. In other words, too much performance isn’t always a positive when it comes to kitchen range hoods.

Ventilation Hoods to Avoid

Downdrafts

BEST Downdraft behind the cooktopBEST Downdraft behind the cooktop

Ventilation mistakes have been a big part of our webinars. Our “Appliances You Should Never Buy” webinar featured downdrafts as the number one appliance you should avoid.

Downdrafts reverse gravity and have zero capture area. Most of the power burners are now on the front of ranges, and yet a downdraft is behind the range. 

Read More: Can You Install a Downdraft Vent Behind a Range?

Over-the-Range Microwaves

Samsung Over-the-Range Microwave above a freestandSamsung Over-the-Range Microwave above a freestanding gas range

Over-the-range microwaves centralize your cooking. I love them as a concept, yet their CFM is only 310 with little capture area.

You may want to think about a hood and placing the microwave elsewhere.

Read More: Are Over-the-Range Microwaves Going Out of Style?

Cirrus Hoods

BEST Cirrus Hood inserted into the ceilingBEST Cirrus Hood inserted into the ceiling

These hoods are new, Italian-inspired, and beautiful. However, by placing the hood in the ceiling, some of the smoke will dissipate before being extracted.

If you cook a lot, then I would consider other options.

How do you mount an island range hood?

Mounting your island range hood is different than walls and under cabinets. Since this hood is free-standing above an island, you need to make several marks on the ceiling and ensure that it is supported with extra support brackets.

Before you do anything, gather the right materials!

Because you need more support for an island hood compared to a wall or under cabinet hood, there are four steps to take before you can hang it.

The first one is the most similar – again, you’ll be making measurements and finding a place where you want to mount your hood that is supported by joists. But this time you’ll be making marks on your ceiling, so be sure to grab a ladder.

The first two things you’ll do are:

  1. Locate two ceiling joists and mark them with a pencil or marker on your ceiling. Your ceiling bracket will mount to these joists.
  2. Draw a square in the center of the installation area on your ceiling. A laser level works great to find this exact center area. The size of the installation area depends on the size of your ductwork.

Note: You need some room to install your ceiling brackets, though, so don’t mark your installation area too close to the ductwork.

Leave at least a few inches of space between the installation area markings and your ductwork (You’ll trace the ductwork out near the end of Step 1).

Higher-CFM range hoods require larger ductwork. In addition, since island range hoods are exposed to your kitchen air on all sides, they require more CFM than walls or undercabinets to keep all the unwanted air outside your home.

In some cases, the ductwork size depends on the model. You can find the duct size for every model on Proline’s product pages. If you have any questions, call us at (877) 901-5530.

Step 2 and 3 involve the extra support I mentioned

Step 2 and 3 involve the extra support I mentioned above: the ceiling bracket and your support brackets:

Since an island hood is free-standing, the chimney

Since an island hood is free-standing, the chimney needs to be installed before it is mounted, unlike wall and under cabinet range hoods. This is part of the reason that the ceiling bracket and support brackets are so important. They keep the chimney firmly in place.

Now you can mount your island range hood. Island r

Now you can mount your island range hood. Island range hoods do not mount using a bracket. Instead, they fasten into the supporting bracket. Here’s how:

  1. Set your hood directly under the chimney you installed in step 4.
  2. Screw it into all four supporting brackets.
  3. Slide the telescoping chimney down until it meets the top of your range hood.

Conclusion

The correct installation height of your range hood depends on the type of range you have. For maximum efficiency in your kitchen, remember these recommended height ranges:

 

  • If you have a gas range, install your range hood 24 to 36 inches above your cooktop. 
  • If you have an electric range, install your range hood 20 to 24 inches above your cooktop.
  • If you have an outdoor grill, install your range hood 36 to 42 inches above your cooktop.

 

Besides the type of range, other factors in choosing a range hood include the cubic feet per minute and your kitchen layout.

Considering these criteria carefully will help you choose the best range hood for your specific kitchen needs.

Good luck installing your brand new range hood! You should be good to go as long as you follow all of our instructions and essential pointers.

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