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The best manhole blower has an incredible variety of uses in industrial, commercial, and residential settings – not just when you’re down in a manhole. A portable confined space air blower is great for bringing in fresh air and clearing out debris in attics, crawl spaces, and basements and is useful in industries like construction, brewing, grain storage, engine rooms, and more. The following manhole blower reviews and ratings can help you narrow down your options to find the best product for all of your confined space ventilation needs.
In This Article
No matter why you need to find the best manhole blower, it can be difficult to navigate all the terminology and features surrounding these ventilator fans. To help you out, read on to discover our top 5 best manhole blowers available on the market today for you to compare and choose the right product.
The Maxx Air 8-Inch Yellow Heavy Duty Cylinder Fan is the best manhole blower because it is small enough to be portable for tight spaces like manholes, attics, and crawl spaces, but it is also a powerful and durable machine.
The Maxx Air 8-Inch Yellow Heavy Duty Cylinder Fan is built perfectly for limited access areas like attics, basements, crawl spaces, and more and is an option for both residential and professional applications. With the heavy-duty duct and ducting, the Maxx Air works as both an exhaust fan or a blower fan. This confined space fan can be used for both intake or exhaust, depending on which side the hose is attached to. The two flex hoses that it comes with are both 20 feet in length and 2-ply polyvinyl, and they come with steel support coils, cinch strap, hanger rings, and a 6-foot power cord included.
The fan blows up to 800 CFM with its two-speed enclosed 120V motor. The fact that the motor is totally enclosed helps this fan earn its UL listing for outdoor use (when used in conjunction with a GFCI outlet, though the outlet is not included). A type of fan like this is an investment and meant to have a long life of work.
- Can be used for intake or exhaust
- 1-year limited warranty
- Compact and powerful
- GFCL outlet for outdoor use not included
The Allegro Industries 8-Inch Plastic Compaxial Blower is the best manhole blower because it has a powerful 1/3hp motor and is built to withstand temperatures of up to 180°F and is UL, CSA, and C certified.
The Allegro Industries 8-Inch Plastic Compaxial Blower is built to last and is temperature-resistant up to 180 °F. This airbag manhole blower is also UL, CSA, and CE certified, so you can rest assured that investing in a manhole blower like this is worth the peace of mind. The 15″ fan has nine fan blades made of polypropylene with a polyethylene housing, and the canister can be switched for either ventilation or suction. The ducting is single-ply and made of polyester and vinyl materials with a PVC coating to resist both harsh temperatures and outdoor conditions.
It’s hard to argue with the quality workmanship of this confined space fan. Despite its power level, this manhole blower is built to be intuitive, functional, and portable, making it a great option for residential purposes as well as commercial ones.
- Temperature-resistant up to 180 °F
- Available as full unit with 25 feet of ducting and a storage canister
- Fan blades are not as durable as other options
The VEVOR Utility 12-Inch Portable High-Velocity Utility Blower is the best manhole blower because it is an affordable option for ventilation and suction, comes with 16 feet of PVC ducting, and works at a quiet 71 decibels.
For lighter work needs, the VEVOR Utility 12-Inch Portable High-Velocity Utility Blower is a great option. Despite its small size, the fan spins at 3300rpm and offers an impressive airflow of 2295 CFM. The blower fan has a winding motor made 100% of copper, and its smaller portable size is perfect for basements, grain storage units, garages, and more. With 16ft of PVC ducting and a powerful AC motor, this is an excellent lower-price option to consider.
Despite its efficiency, the whole unit operates at a relatively quiet 71 decibels, so whether in residential or commercial settings, it won’t be too much of a noise nuisance to leave running. This confined space fan confirms to current EMC electrical safety guidelines, and the unit comes with the blower fan itself, an electric cable, the 16-foot duct, and a user manual to ensure installation is simple and intuitive.
- Copper winding motor
- Protective fan guards
- May be too small for larger commercial applications
The MOUNTO Combo Heavy-Duty 8-Inch Cylinder Fan Blower is the best manhole blower because it comes with 25 feet of vinyl hosing, is perfect for long or tight spaces, and pushes directional airflow at a rate of up to 1100CFM.
For smaller residential applications, the MOUNTO Combo Heavy-Duty 8-Inch Cylinder Fan Blower is a versatile option. Despite its small size, it comes with 25 feet of vinyl hosing, which is ideal for tightly enclosed spaces that have a distance to go from the outside air like basements and crawl spaces. This MOUNTO pushes directional airflow at a rate of up to 1100CFM to areas that would be otherwise very difficult to get to.
The enclosed 120V motor is single speed, and the protective orange housing is actually made from steel to keep the whole unit protected and safe. This model can be used as a blower or exhaust, depending on how the hose is connected to the intake/outtake of the fan. If used with a GFCI outlet, this unit meets UL listed standards for outdoor use, though a GFCI outlet is not included.
- UL listed
- Includes 25 feet of vinyl hosing
- GFCL outlet not included
The MOUNTO Plastic Compaxial Blower Manhole Fan is the best manhole blower because it comes with a generous 25 feet of ducting and a canister assembly for easy storage.
Last but certainly not least, we have the MOUNTO Plastic Compaxial Blower Manhole Fan. This unit has a 1/3hp motor with a 9-blade, 8″ fan that offers an airflow of 1000CFM. This confined space fan comes with 25 feet of ducting, and the canister is capable of doing both extraction and suction work. This blower fan offers a compact axial blower that is both easy to use and doesn’t sacrifice storage space.
How the canister attaches (to intake or output) is what determines whether the blower is set for intake or exhaust. The difference with this model is that it is available as a complete unit with the storage canister for easy storage of the 25 feet of ducting and the ventilator fan itself.
- Canister assembly for easy storage
- CSA certified
- Loud operation
Features to Consider for the Best Manhole Blower
There are many features of manhole blower reviews to consider when choosing the best manhole blower for your home or business. Here are a few terms to know and features to keep in mind when choosing the best manhole blower for your needs.
Cubic Feet Per Minute (CFM)
One of the first features that you should check in a potential manhole blower is the CFM, or cubic feet per minute. In simple terms, the CFM is a measurement of how much air the fan is capable of moving, which is the entire purpose of the unit whether you are looking to use it mainly for exhaust or intake. The higher the CFM, the more air the fan is moving and the more powerful it is. However, it is important to scale the CFM needs to the size of the space you are working with and the budget that you have to find your best manhole blower.
The fan blades, housing, and duct can be made of a large variety of materials, so it’s good to be at least loosely familiar with all of these materials.
Polyvinyl — In general, “polyvinyl” just refers to materials or objects made from polymers of vinyl compounds, but “polyvinyl chloride” is the full version of PVC, which you will also see often. PVC is the 3rd most widely produced plastic material, and it is available in rigid and soft varieties.
Polyethylene — Polyethylene is a similar material to PVC, and depending on the variety, it can be found in anything from milk jugs to children’s toys to bulletproof vests.
Polypropylene — Polypropylene is another plastic material and belongs to a group of which are non-polar and partially crystalline.
Many units will say that they meet the UL standard for outdoors if they are used in conjunction with a GFCI outlet; however, this doesn’t mean the unit comes with a GFCI outlet. GFCI outlets automatically shut off when they sense a variation in the electrical current that can be caused by weather or harsh outdoor conditions.
Safety Standards and Certifications
There are many safety standard certifications that a manhole blower could have, but it can be hard to tell one from the other (or even if they’re all the same!). UL and ULC are some of the most common; UL stands for Underwriter Laboratories, which is a third-party company that checks on manufacturing standards. However, UL listed, UL recognized, and UL classified are all separate tiers and not exactly the same thing. ULC, or Underwriter Laboratories of Canada, is in the same family but covers Canadian manufacturing (though it is a separate organization).
The CSA (formerly the Canadian Standards Association) is another standards organization in Toronto that serves Canada, the U.S., and Asia, and CE certification means that the product conforms to health and safety standards for products sold within the “European Economic Area.” Because the different organizations often cover different health aspects and different regions of the world, it is not uncommon for one product to have several of them.
Benefits of Using Manhole Blowers
Whether in a residential, commercial, or industrial setting, manhole blowers have many benefits in terms of both comfort and safety. Here are a few benefits to be aware of while you’re out searching for the best manhole blower.
Intake and Exhaust
One of the best things about manhole blowers is that they can often be switched between intake and exhaust, which makes them extremely versatile. Similar to air curtains, the exhaust is very useful in situations where there is a lot of airborne debris such as when hanging drywall or drilling concrete, as well as while painting in order to clear out the fumes. Or, if you’re working in a manhole itself, the stagnant air could be full of hazardous particles or chemicals, and a manhole blower that pulls air from the outside with its ducting and forces it down will give you fresh, clean air to breathe.
Cleaning Up Dust When Working
Even when you’re not working with hazardous chemicals or toxic air, manhole blowers set to exhaust (or suction) mode can be an excellent way to get rid of extra debris or dust in the air that, while not particularly harmful in small quantities, can be bad for your lungs with repeated exposure.
Precautions of Using Manhole Blowers
Before you complete your research for the best manhole blower and make your final choice, there are a few things to be aware of.
Adding Up Certifications
One thing to be aware of is that a product can have three or four different certifications listed, but oftentimes, that doesn’t mean it is necessarily a better product than a manhole blower that has fewer certifications. Sometimes, one product has been on the market longer than another, or one product is certified to be sold in more regions of the world and needs to go through different organizations and certifications for that to happen.
Cords and Power Outlets
If you’re working in a manhole or another tight industrial space, you may not have easy access to an outlet nearby. Many manhole blowers, shop fans, industrial fans, and drum fans—even the smallest and most portable ones—run on AC power and not battery power, meaning you will need to find somewhere to plug them in. If you’re going to be working somewhere that doesn’t have easy access to a power outlet, consider looking for a battery-powered model instead.
Our top choice for the best manhole blower review is the Maxx Air 8-Inch Yellow Heavy Duty Cylinder Fan. This confined space fan has a 2-speed motor, and it can push direction airflow at a rate of up to 800CFM, despite being small and lightweight.
No matter which manhole blower ends up being the best option for you, we hope that we helped you gather more information to make the choice that is best for your health and safety while respecting your needs and budgets.