How Excessive Ought to Vary Hood be from the Range

The fan dimension doesn’t have an effect on vary hood top
  • For outdoor, vary hoods ought to be put in between 36 to 42 inches above the stoves for all of the sizes. Nevertheless, it’s possible you’ll maintain the space between 28 and 36 inches above the stoves indoors.
Kitchen hood top
  • Vary hood mounting doesn’t have an effect on the peak at which the set up is made, together with dimension.
  • Outside and indoor hoods have totally different set up heights.
Commonplace vary hood heights
  • The usual vary hood top above the fuel vary and vary hood top above the electrical range are between 28 and 36 inches from the range. It’s lower than 28 inches, it could injury the kitchen, whereas whether it is greater than 36 inches, your hood can not cross air away from the range successfully. This formulation is relevant to island vary hoods, wall mount vary hoods, and vary hood inserts.
  • Many of the vary hood producers recommend extending the vary hood between 20 to 24 inches above your kitchen vary, however professionally 28 inches is the perfect top for highly effective vent hoods.
  • If the vary hood is above the fuel vary, the tough distance ought to be between 25 and 30 inches, until outlined otherwise. 
  • Don’t mount it beneath the stated top, as it’s important for security functions. 
  • Equally, keep away from putting in it past the higher restrict, because it might not be appropriate to your hood’s general effectivity.
  • It’s important to verify your vary hood’s top as a result of the flames might trigger extreme injury, and you could have an accident.
  • Nevertheless, it will assist if you weren’t panic concerning the hood within the kitchen, and it’s the space in case of an electrical range. 


Further Options That Might (or Might Not) be Price Your Cash

Photograph by Courtesy of IKEA
  • A number of fan speeds: You actually need solely excessive and low settings. If you happen to’ve obtained all of the burners cranked up, you will want extra air flow. However a low velocity ought to suffice when utilizing only one or two pans over medium warmth.
  • Warmth sensors: By sensing temperature modifications, some models will activate the fan routinely or alter to the suitable velocity.
  • Distant management: This may be helpful for hard-to-reach island hoods or for occasions while you’re (briefly) away from the range.
  • Exhaust timers: After a sure time frame, sometimes 10 minutes, this characteristic shuts off the blower routinely—helpful if you wish to depart the fan working to deal with lingering odors.
  • Constructed-in storage: Brief on cupboard and counter house? Search for a hood with rails across the entrance and sides for hanging small pans and utensils. Sure designs additionally create a shallow shelf on the fringe of the hood.

Proven: A built-in shelf and rails maintain spices and utensils. IKEA Datid hood, about $680; for shops

How excessive ought to an out of doors vary hood be from the range?

Out of doors vary hoods ought to be mounted between 36 and 42 inches out of your cooktop. The additional distance is required as a result of intense warmth of outside grills.

Different Elements to Take into account

Some extent not taken into consideration by many is the perfect top in relation to the individual most definitely to be cooking. The very last thing you want is a hood that will get in your approach. Chances are you’ll wish to maintain it above eye-level and undoubtedly not ready the place you'd knock your head. That is one thing you’ll most definitely uncover after the set up is full, if not rigorously thought-about beforehand.

Probably crucial issue is the CFM, or cubic ft per minute, of the unit you may be putting in. Relying on the capability of your vary hood, you might be able to set up it at a farther distance or set up it nearer for much less highly effective fashions. Don’t set up decrease than the advisable minimal top as a result of the minimal top is outlined by security assessments, whereas the higher restrict relies solely on efficiency.

The set up top is one thing that must be thought of each throughout the kitchen design and whereas purchasing for a brand new vary hood. Typically talking, if you happen to can bear in mind to observe a couple of steps, you can also make an knowledgeable choice.

  1. Whereas purchasing for a variety hood go into the method figuring out you may be looking for vary hoods designed particularly to your cooking software, fuel or electrical. Each product tends to have barely various mounting suggestions. The vary hoods themselves aren’t constructed otherwise for fuel or electrical cooktops, however restricted house based mostly on the minimal set up top might restrict your choices.
  2. When laying out your kitchen cupboards contemplate the quantity of house you will want to your desired kitchen hood. If you’re changing an current mannequin with cupboards already put in, learn the way a lot house you might have accessible earlier than you buy groceries.
  3. Take into account the CFM wanted to your desired top. If you wish to improve the space between the cooktop and the underside of the vary hood, you might be seemingly going to want an elevated CFM. Some sources suggest including 100 CFM for each 3 inches above the utmost advisable positioning.

It’s at all times instructed to observe the manufactures' instructed set up procedures. By following the set up tips supplied within the product handbook, you will be assured that the kitchen hood is working on the peak effectivity it was designed for along with making certain your guarantee will not be void.

If for some purpose you need to deviate from the advisable directions, comparable to an area limitation, or just because a decrease hood is prone to get in your approach, it would be best to rigorously contemplate the impact a change in distance may have.

At greatest, a machine put in on the incorrect top goes to scale back the profit you might be hoping to obtain, growing the possibility of particles, grease and oil buildup round your kitchen and surrounding cupboards, and an incapability to take away odors created as a byproduct of cooking. The worst-case state of affairs is a hearth if the hood is positioned too near the cooktop.

The peak of the air flow unit might look like one of many much less essential issues to think about when planning your kitchen exhaust/filtration system, however a nasty choice can have lasting results. Along with the seize space and its corresponding depth and the efficient CFM, the set up top, in my view, are three of crucial components when selecting and putting in vary hoods. Having the proper duct dimension and form can be essential.

The right way to Vent Correctly

Venting is comprised of 4 components, CFM, seize space, duct dimension, and duct run.

Let’s discover every.


CFM is cubic ft per minute or what number of cubes of air are extracted per minute.

A 900 CFM blower means 900 cubes of air are extracted per minute. That is roughly a small room of air. 

How A lot CFM Do You Want?

It varies relying on the way you prepare dinner and what you might have for a range.

If you happen to wish to grill, griddle, fry, or use a wok, then 900 to 1500 CFM is required to extract the odor and grease from that kind of excessive quantity cooking.

For boiling water, it’s possible you’ll want solely 400 CFM or much less.

Varieties of Blowers

Inside: Positioned contained in the hood, it is simpler to service, however you do hear extra noise.

Outdoors: Exterior blowers will be bought in greater CFMs. In addition they are quieter, however you continue to hear the air speeding via the duct.

Nevertheless, they aren’t straightforward to repair within the winter, and having an enormous stainless-steel mushroom cap on your home will not be precisely handsome.

In-Line: Mounted to the duct run, you might have the quieter operation of the surface blower with out the massive motor outdoors your own home.

Professional Tip: If you’re planning an inline blower, then you might want to construct an entry door in case you want service.

Seize Space

Seize is probably the most misunderstood side of air flow.It is roughly the peak, width, and depth of the hood.

Smoke is chambered, then exhausted. It isn’t instantly sucked out of your own home. For prime-volume cooking, purchase a hood with a minimal of 24 inches in depth.

The ability burners of most fuel ranges are within the entrance at about 24 inches deep.

Ideally, you must maintain a vent duct beneath 30 ft as a result of the longer and extra bent the duct, the much less efficient the venting will likely be.

Some ducts do are inclined to go 60-70 ft. Most that do, like downdrafts, will not work.

Every elbow flip is equal to 6-8 ft of ducting, so you must rethink the duct pathway if the duct exceeds one elbow flip.

One of the simplest ways to the duct is vertically, straight, and brief. The following greatest is horizontally and brief.

Duct Measurement

Duct dimension is quite a bit like seize space. Bigger ducts will be capable to exhaust extra smoke, so use at the very least 6 inches. On the bigger CFM blowers, you will want 8 or 10 inches.

Use a inflexible duct solely. Grease will be caught within the joints of a versatile duct. It is towards code in lots of states.

Make-Up Air

For brand spanking new development, any vent over 400 CFM wants the equal contemporary air return.

It is easy in new development. Simply plan for Make-Up Air as a part of your HVAC.

The code in Massachusetts is 10 ft away and on the alternative wall if you wish to retrofit it.

Learn Extra: What Is Make-Up Air?

How far can a variety hood be vented?

How far are you able to vent a variety hood? Your vary hood duct shouldn’t exceed 30′ for a straight run, 25′ for a run with one elbow, and 20′ for a run with two elbows. The shorter the duct, the higher. In case your ductwork is simply too lengthy, your kitchen air might not attain the surface.

What occurs if I mount my hood too removed from my cooktop?

A number of the undesirable air in your kitchen will escape into your cooking house

Likelihood is excessive that you’ll flip your vent hood on and, as you proceed to prepare dinner, you’ll discover smoke accumulating within the room. Over an extended time frame, grease might start to look on surrounding cooking surfaces like your partitions and ceiling.

It’s because some cooking fumes will escape into your kitchen moderately than journey via your ductwork and outdoors your own home. This isn’t good in any respect! Actually, it defeats the aim of getting a purposeful vent hood. Then it’s simply in your kitchen for appears.

The “efficient seize space” doesn’t span your complete distance between your vary and your vary hood

The efficient seize space is the world that surrounds your fan the place it captures all of the grease, filth, and different cooking fumes effectively.

Take a look at our diagram of the efficient seize space beneath. The grey shaded part is the seize space, the place, because the title suggests, undesirable air is captured and funneled via your ductwork.

However right here’s the important thing:

In case your hood is mounted too distant from the cooktop, the additional few inches that the air has to journey aren’t inside this efficient seize space. The extra distance drastically decreases the hood’s effectivity, which is why the suitable top is so essential.

One can find your self utilizing the upper speeds usually, lowering the lifetime of your motor

As a result of undesirable air escapes, it’s possible you’ll flip your hood on greater speeds to compensate. If you happen to run it at most velocity on a regular basis, it should put on down.

The heated and cooled air might depart your own home, costing you cash unnecessarily

One other consequence of utilizing the upper speeds too usually is that you could be take away heated or cooled air out of your kitchen. In consequence, you’ll have to show your heater or air con again on to chill/warmth extra air in your house.

You possibly can clear up this downside and save your cash by initially mounting your hood on the proper top. It will can help you run it at decrease speeds and pull simply the correct amount of air out of your own home.

Chances are you’ll require make-up air

One other consequence of working your hood on max velocity usually is that you could be require make-up air. If you flip it to max, though it could filter all the undesirable contaminants out of your cooking out of your kitchen, that air has to go someplace.

In case your hood is on for lengthy sufficient, shortness of breath might happen. The air that leaves your kitchen will not be being changed at a quick sufficient fee, which is an indication you want a make-up air equipment. 

Earlier than you put money into make-up air, although, strive merely opening a door or cracking a window to enhance the air flow in your kitchen.

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Some Extra Info

  • When figuring out the place of vary hoods the countertop top is irrelevant and also you solely have to take note of the advice of the space from the cooktop (the burners) to the seize space of the hood.
  • Whether or not you've obtained an island cooktop with a corresponding island hood or a wall backed range and a wall-mounted vary hood or below cupboard vent/hood is irrelevant relating to vary hood top.
  • It’s extremely instructed that your ductwork doesn’t use an extendable duct. This over years of operation tends to gather comparatively bigger oil and grease deposits which may flip into a hearth hazard. Please be aware that this isn’t a standard prevalence, however undoubtedly one to bear in mind. Additionally, some constructing codes require you to make use of inflexible ducting to your kitchen air flow for this very objective.
  • Bear in mind any constructing codes and the requirement of make-up air techniques (required for CFMs above 400 in some municipalities).
  • When the machine is positioned on the optimum degree and it’s designed with a great seize space and the CFM relies in your cooking and exhaust wants it will seize grease droplets, exhaust carbon monoxide, smoke, and moisture within the type of steam. That is your finish objective. Within the case of a non-vented system, the charcoal filters would deal with the odor and a few effective particulates.


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