Broan Canada: Bath/Ventilation Fans, Range Hoods, Trash Compactors and Broan Fresh Air Systems
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Broan Canada: Bath/Ventilation Fans, Range Hoods, Trash Compactors and Broan Fresh Air Systems


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Customer Service
Frequently Asked Questions: Range Hoods

What's the best way to clean the surface of my hood?
How often should I clean my filters?
How often should the non-ducted range hood filters be replaced?
Can I replace an Over The Range Microwave with a Range Hood?
Which is better, ducted or ductless?
What type of duct is best for venting a range hood?
What do the CFM and Sone ratings Mean?
What is "normal" setting considered to be?
How much CFM do I need for my Range or Cook Top?
What is the CFM and sone rating on a non-duct range hood?
How are range hood's ducted?
What does the term "convertible" mean?
How far can I run my ductwork to exhaust my hood?
Can I exhaust my hood into my attic instead of out the roof or wall?
Can I install an external vent fan or in-line fan to boost the performance of my hood ventilation equipment?
How high should I mount my hood above my stove?
Is a cabinet above the hood required to mount the product?
My ceiling height is much taller than most kitchens and I want my stove on an island. What do I do about ventilation?
May I remove the hood controls and mount them remote from the hood?
If I have a custom hood built for my kitchen, does Broan provide protective liner for their hood inserts?
Does Broan-Nutone build custom design hoods?
Does a cord come with a hood?
May I use a downdraft with a slide-in stove?
What power units are available for custom range hoods?
Is the hood width the actual measure that is advertised?



What's the best way to clean the surface of my hood?

Stainless steel hoods should be washed regularly with a clean cloth, warm water and mild soap or dish detergent. Clean in the direction of the polish lines. Rinse well with clear water and wipe dry immediately. You may wish to apply light oil used for furniture polishing to emphasize it's bright finish.

Wiping regularly with mild soap/detergent and warm water should protect painted hood surfaces. Be cautious about using "New and Improved" cleaning agents. Your hood is installed over hot cooking equipment. Most chemicals found in cleaning agents react with heat to loosen paint.

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How often should I clean my filters?

The aluminum mesh grease filters should be washed in your dishwasher approximately every month depending on the amount of usage. Wash often if your cooking style generates greater grease like frying foods or wok cooking. You cannot clean the non-duct carbon filters; they must be replaced.

Baffle filters, which are used in professional style range hoods products, are designed to operate longer in high grease conditions without loss of performance. Generally, these need to be cleaned with soap and water whenever the surfaces become unsightly.

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How often should the non-ducted range hood filters be replaced?

It depends on the frequency and type of cooking that is performed. Normally, every three (3) to six (6) months is recommended for replacing the charcoal filters. Some charcoal filters are designed with an indicator mechanism that will change color as a signal to replace the filter.

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Can I replace an Over The Range Microwave with a Range Hood?

Yes. Whether your current OTR is duct-free or ducted, we offer a complete line of range hoods to effectively ventilate your cooking area.

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Which is better, ducted or ductless?

Range hoods should be ducted to the outside of the home. While duct-free filters trap some of the grease and odors from normal cooking, the humidity, smoke and heat will all be recirculated back into the home. If the duct-free filters are not regularly replaced, eventually the grease and odor catching effect will no longer protect your home from impurities.

High BTU gas cooking equipment should always be ducted to the outside of the home. If this is impossible, high performance convertible hoods and filters are available in some models. Contact the Technical Support Group.

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What type of duct is best for venting a range hood?

Range hoods must be vented using metal duct. Given a choice between flexible metal duct and smooth metal duct, go with the smooth. The ridges found in flexible metal duct create turbulence and will diminish airflow.

  • NEVER use 4" dryer duct or any plastic duct on a range hood installation. The minimum size duct allowed on most range hoods is 3 ¼" by 10" which is equivalent to 6" round. More powerful hoods require even larger duct sizes up to 10" round. Consult the specifications for the model you have chosen.

  • When remodeling and changing hood and cooking equipment types, do not reduce the ductwork size to less than the size specified for the range hood. Decreasing the duct size restricts the performance of the range hood ventilator.

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What do the CFM and Sone ratings Mean?

CFM stands for Cubic Feet per Minute of exhausting air flow. The higher the number, the greater the amount of air that is exhausted using the Range Hood.

A Sone is an internationally recognized unit of loudness. Sones are a linear measure like inches. Doubling the sone value is equivalent to doubling the loudness. To get a sense of what one sone represents, one Sone is equivalent to the sound of a quiet refrigerator in a quiet kitchen. Typically, the Sone level is measured at maximum CFM (speed), however, some newer products are also being tested at normal CFM (speed) settings to provide consumers with typical sound level information.

All Broan-NuTone CFM and Sone ratings are HVI certivied so you can rely on them!

What is "normal" setting considered to be?

The low setting is considered to be normal.

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How much CFM do I need for my Range or Cook Top?

For conventional electric and gas ranges or cook tops, we offer a complete line of hoods that can fit your cooking needs with features you desire. For high output gas ranges or cook tops, the minimum rate of 1 CFM of ventilation per 100 BTU is recommended.

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What is the CFM and sone rating on a non-duct range hood?

There is no national standard for the measurement of CFM or Sones on a non-ducted hood because the air is not exhausted, it is re-circulated.

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How are range hoods ducted?

There are several ducting methods, depending on the model. The 3 ¼" X 10" duct may vent from the top vertically or horizontally through the rear of the product. The 7" round duct vents through the top of the range hood. Some hoods are single use ducted and some are convertible, meaning that the hood is designed to be installed using more than one duct method or direction.

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What does the term "convertible" mean?

The term "convertible" refers to a hood that can be installed in different ducting modes. Typically a "convertible hood" can accommodate: 7" round ducted, 3 ¼" X 10" vertical or horizontal ducted , and non-ducted applications available at installation.

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How far can I run my ductwork to exhaust my hood?

For maximum performance keep the duct straight and short. Use the shortest route with the fewest turns possible. 45° turns are better than 90° turns. Be sure to use an external roof or wall cap. If in doubt, consult a qualified designer/installer knowledgeable in ventilation or contact the Technical Support Group.

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Can I exhaust my hood into my attic instead of out the roof or wall?

No. You should never exhaust air into spaces within walls, ceilings, attics, crawl spaces or garages. The humidity and grease collect in the space.

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Can I install an external vent fan or in-line fan to boost the performance of my hood ventilation equipment?

Do not install in-line or external fans to boost a hood that has it's own power unit. In general, attempting that type of "boost" will not be effective. Also, most cooking ventilation products are designed with fan switches matched to the original motor amp ratings and would not support the increased amp draw from additional motor installations. This type of tampering voids the original manufacturer's warranty. If you want a remote/extended fan, there are hood products made for that type of installation.

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How high should I mount my hood above my stove?

Most common installations require a range of 18" - 24" between the bottom of the hood and the top of the cook top. This will provide the best capture area for cooking impurities.

For high capacity ventilators, the distance from the cooking surface to the bottom of the hood should be 22" - 30" unless otherwise noted for a specific hood or range.

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Is a cabinet above the hood required to mount the product?

Some hood models are designed for mounting to the wall and do not require cabinet for mounting. Hoods designed for undercabinet applications need a cabinet or soffit above it, or a Model 35 wall mount kit.

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My ceiling height is much taller than most kitchens and I want my stove on an island. What do I do about ventilation?

  • Broan -NuTone has LoSone Select ventilators available that are approved for kitchen applications.
  • Drop-in cooking equipment can be vented with one of Broan-NuTone's Downdraft systems.
  • Custom chimney extensions are available for Island hoods for up to 10' ceilings. Contact Technical Support Group if your ceiling is higher than 10'.
  • Contact your local Retailer/Distributor or call the Technical Support Group

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May I remove the hood controls and mount them remote from the hood?

Altering the product voids manufacturer's warranty. Check for models that already offer remote switch options.

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If I have a custom hood built for my kitchen, does Broan provide protective liner for their hood inserts?

No. You would need to find a metal fabricator in your area to design a liner for your hood, especially if local building codes require one.

Broan does sell a complete custom kit that includes an integrated liner in specific sizes and 30"-42" widths. See Model 103023.

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Does Broan-Nutone build custom design hoods?

While we do not build custom hoods, Broan provides a number of blower inserts designed to accommodate the ventilation needs of most cooking equipment. See our Specialty Hood Section.

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Does a cord come with a hood?

We provide electrical connections for hard-wiring the product through a wall; however, in Canada, cord kits are not provided, nor are they available.

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May I use a downdraft with a slide-in stove?

There is no way to use downdrafts with stoves or built-in ovens. The units must only be installed with drop-in cooking equipment.

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What power units are available for custom range hoods?

Currently, there are two power modules offered by Broan and NuTone. The PM25 (250 cfm) and the PM44 (440 cfm). Both units come in either black or white. Broan also offers a custom hood kit complete with liner, see Model 103023.

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Is the hood width the actual measure that is advertised?

No. They are between an 1/8" & 1/4" smaller than listed so that they fit properly into an opening of that nominal size.

In Canada
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Technical Support: 1-877-896-1119

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