Kitchen gismo with fans — such as a stovetop sports fan , range hood , or microwave rooter — can certainly produce some gusts , but do they have any effect on air quality ?
Most kitchens are outfitted with a stovetop fan ( or a chain hood or the fan on anover - the - chain microwave oven ) to reduce smoke and better air quality in the kitchen . With wildfire smoke and other air - quality takings , some householder have asked whether these fansimprove the atmosphere qualityin the rest of the home base .
Do the fans really make clean the atmosphere after cookery , or do they only pass around the airborne corpuscle further into the home ? We asked HVAC experts to weigh in , and here ’s what they had to say .

Credit: John Keeble / Getty Images
Effectiveness of Stovetop Fans in the Kitchen
Cooking produces smoke , grunge , and smell and encourages high humidness that can lead to problems such asmold growthand water scathe over meter if not by rights mitigate , says Myles Robinson , HVAC expert atCompare Boiler Quotes . Gas ranges , in particular , resign a lot of spare gaseous material into the surround environs . twist on a stovetop fan while cookery tighten the buildup of these cooking byproduct in the kitchen . The factor that determines how this is done is whether your stovetop sports fan is ductedorductless .
Ducted vs. Ductless Fans
As the name implies , ductless fans do not connect to any extra ductwork in the plate . They merely operate as fans , recirculating the zephyr back into the kitchen . Conversely , ducted devotee connect to the home ’s HVAC system or a standalone duct design to vent the air out of the house to be replaced with young , fresh strain through the home ’s register . Range cap can be either ducted or ductless , as can microwave fans . make up one’s mind the type of buff you have in your kitchen can give you an idea of whether the melodic phrase is simply circulating or being ventilate externally .
The other thing that can affect how a stovetop fan mess with contaminated air is the mien of filters . Most ductless fans that recirculate air back into your kitchen have a filter of some kind . The three most popular types of cooking stove hood filters are charcoal filter , stainless sword baffle board filters , and aluminum mesh filter , each with its own unparalleled strengths .
disregardless of the type of stovetop lover you have , experts agree that turn it on is an efficient way to handle with the airborne corpuscle , hummer , and exhaust fumes that result from cooking . “ By turning on the stovetop fan , you prevent them from pile up in your indoor environment , ” Josh Mitchell , Air Conditioner Labfounder , says .
Effectiveness on General Low-Quality Air in the Home
Given the strength and limitations of stovetop buff , is it good to turn them on during periods of low-down - timbre melody outside the kitchen ? Can theyimprove the atmosphere qualityin your habitation ? The expert agree that it depends .
Stovetop fans outfit with filters can be somewhat helpful in filtering the gentle wind , but they are not designed to ameliorate air quality beyond filtering out cookery byproduct . commonly , these filters are designed to capture comparatively large particulates , unlike dead on target air purification filterssuch as HEPA filtersthat are design to polish off at least 99.97 % of dust , pollen , moulding , bacteria , and any airborne particles with a size of 0.3 micron , according to theU.S. Environmental Protection Agency .
“ If the fan vents alfresco , it can help in create a slight disconfirming pressure inside the home , which can help the entry of fresh air from window or other opening , ” Mitchell says . However , if the outdoor air caliber is a concern due to wildfire smoke or eminent pollen counts , you wo n’t be see to bring air in from the open air , he pronounce . In that case , Mitchell recommend investing in a high - quality air purifier with HEPA filters .
Your stovetop buff , range cowling , or microwave lover also ca n’t serve as a set - it - and - bury - it fix for your air quality fear : They require maintenance .
“ The important matter to know about range hood filters is that they ask even cleaning or replacement to maintain efficiency , ” Mitchell says .
So if you want your fan to have an impression on the melody quality in your space , you ’ll need to ensure it ’s well - maintain .
The Bottom Line
Using your stovetop fan is a good thought whenever you are cooking in the kitchen , especially if you have a gas reach . After all , that is whatrange hoodsare designed for . The rooter effectively vent away cooking byproducts , including large particles and pollutants .
However , if the atmosphere quality outside the kitchen concerns you , experts concord that it ’s best to tally anair purifier(or two ) to the home instead of just relying on your mountain chain bonnet , stovetop devotee , or microwave fan .