Top Tips On How To Buy An Air Scrubber: What To Look For
By: Brothers Equipment And Supply
If you work in restoration, construction, or environmental cleanup, investing in a reliable air scrubber is one of the smartest decisions you can make.
These machines don’t just filter the air—they help protect workers from harmful contaminants, improve indoor air quality, and ensure compliance with Canadian health and safety standards.
Whether you’re buying your first unit or upgrading your fleet, this guide will walk you through the key features and considerations to help you make an informed choice.
An air scrubber is a portable filtration system designed to remove airborne particles, chemicals, mould spores, odours, and other pollutants from the air.
It’s often used on construction sites, during water and fire damage restoration, or in medical and industrial settings.
Unlike standard air purifiers, air scrubbers are built for heavy-duty environments and can be used with ducting to create negative air pressure—a requirement in many mould and asbestos jobs across Canada.
Before choosing an air scrubber, evaluate your specific needs. Are you working in residential spaces or large commercial buildings? Will the machine be used to filter dust, mould, VOCs, or bacteria?
For example, a basement flood restoration will require a different machine than a hospital renovation. Be clear on the air quality requirements, space size, and type of contaminants involved. This will help you narrow down your options.
CFM is one of the most important factors when buying an air scrubber. It refers to how much air the unit can process per minute. For efficient filtration, you want at least four to six air changes per hour.
For example, a 1,000 square foot area with an 8-foot ceiling will require a unit with at least 533 CFM to achieve four air changes per hour.
Many professional units range from 500 to 2,000 CFM and offer variable speed settings for greater control.
High-efficiency particulate air (HEPA) filters are a must-have in any air scrubber. These filters capture 99.97% of airborne particles as small as 0.3 microns, including mould spores, dust, and allergens.
Many units also feature a multi-stage filtration system, including pre-filters to capture larger debris and carbon filters for odour removal.
Always make sure replacement filters are easily available in Canada and that the filter access panel is user-friendly.
Air scrubbers are often exposed to harsh environments, so durability matters. Industrial-grade units are made from rotomoulded plastic or metal housings that resist impact, moisture, and corrosion.
If you’re moving equipment between jobs, look for models with stackable designs, sturdy wheels, and comfortable carry handles. Durability also impacts longevity—a tougher machine may cost more upfront but will outlast cheaper alternatives.
Safety and compliance are essential. When buying an air scrubber, look for units that are CSA-certified, UL-listed, or ETL-approved to meet Canadian electrical and environmental standards.
These certifications ensure that your equipment is safe to use and meets the requirements set out by local regulations and restoration industry bodies like the IICRC.
While air scrubbers aren’t known for being power-hungry, it’s still smart to compare wattage to airflow output. Energy-efficient units help keep utility costs down—especially if you run multiple machines simultaneously.
For restoration work, ensure your units are compatible with GFCI outlets, which are standard on many job sites across Canada to prevent electrical hazards.
Noise can be a deal-breaker, especially in occupied homes or healthcare facilities. Some units operate at over 70 decibels, which can be disruptive. Quieter models, operating at around 50 to 60 decibels, are better suited for residential use. Look for machines with sound-dampening features if quiet operation is a priority for your clients or team.
Not all air scrubbers are created equal when it comes to maintenance. Look for machines with tool-free access to filters, clear filter replacement indicators, and intuitive control panels. Some models even offer digital displays for filter life and CFM readouts. Make sure replacement parts and servicing are available in Canada—otherwise, a great machine can quickly become a maintenance headache.
For mobile contractors, portability is a key factor. Units that are lightweight, compact, and easy to transport will save time and reduce physical strain. Stackable designs help with storage in tight work vans or warehouses. If you’re working in multi-level buildings, consider a unit with large wheels and a foldable handle for stair access.
If your work involves smoke damage, chemical cleanups, or strong odours, you’ll want a unit with activated carbon filters. These filters absorb VOCs and noxious gases that HEPA filters can’t capture. Some premium models combine HEPA and carbon filtration for dual-stage air cleaning—ideal for fire restoration jobs and renovations in sensitive environments.
Always check the warranty period before buying. Most professional-grade units offer at least a one-year warranty, while some brands provide three or more years on key components. Choose reputable brands with a strong Canadian distribution network. Access to local customer service and replacement parts can make a big difference if something goes wrong on the job.
Professional air scrubbers typically range from $800 to over $2,500 in Canada. While it may be tempting to choose the cheapest option, consider long-term costs like filter replacements, maintenance, and downtime from breakdowns. A higher-quality unit can deliver better results and longer service life, making it a smarter investment over time.
If you only need an air scrubber for a few jobs a year, renting might be more cost-effective. However, frequent rentals can add up quickly.
If you use an air scrubber more than five times a year, purchasing becomes more economical in the long run. Used units can also be a good option, but always inspect for filter condition, CFM output, and certification compliance before buying.
Buying the right air scrubber comes down to understanding your needs, prioritizing performance features, and choosing a model that balances power, efficiency, and durability.
From HEPA filtration to portability and certification, every detail matters when you’re working in health-sensitive or hazardous environments. Do your research, compare options, and invest in a quality machine that will keep your job sites cleaner, safer, and more compliant.
What is the difference between an air scrubber and an air purifier?
An air scrubber is designed for industrial use and can handle hazardous particles like mould, dust, and VOCs. Air purifiers are more suited for residential use and typically don’t meet restoration industry standards.
How many CFM do I need for my space?
The number of CFMs depends on the size of the space and the number of air changes you want per hour. A general rule is 4–6 air changes per hour. For a 1,000 square foot room with an 8-foot ceiling, aim for at least 533 CFM.
Do all air scrubbers have HEPA filters?
No. Some entry-level units may only have standard filters. Always check that the model includes a certified HEPA filter capable of removing 99.97% of particles down to 0.3 microns.
What certifications should I look for when buying an air scrubber in Canada?
Look for CSA certification, UL or ETL listings, and compliance with Canadian electrical codes. These certifications ensure safety and legal compliance.
Can I use a residential air scrubber on a job site?
It’s not recommended. Residential units typically lack the airflow capacity, filtration power, and safety certifications required for commercial or restoration work.
How often should I replace air scrubber filters?
Pre-filters should be replaced every job or as soon as they show visible buildup. HEPA filters typically last 6–12 months depending on usage, while carbon filters should be changed every 3–6 months.
Is it worth paying more for a quieter unit?
If you work in occupied homes, offices, or healthcare settings, a quieter unit enhances client satisfaction and makes for a more comfortable work environment.
What does it mean if an air scrubber has negative air capability?
It means the unit can be ducted to vent contaminated air out of a sealed space, creating negative pressure. This is essential for mould remediation and asbestos jobs.
Can I use one air scrubber for multiple rooms?
You can, but it depends on the layout and total square footage. If rooms are connected and airflow is unrestricted, a single powerful unit may suffice. Otherwise, multiple units are more effective.
Are there energy-efficient air scrubbers available in Canada?
Yes. Look for models with variable speed controls and low wattage ratings. Energy-efficient units not only save money but are also easier to run on limited job site circuits.
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Can I Use A Residential Air Scrubber On A Job Site?
It’s not recommended. Residential units typically lack the airflow capacity, filtration power, and safety certifications required for commercial or restoration work.
How Often Should I Replace Air Scrubber Filters?
Pre-filters should be replaced every job or as soon as they show visible buildup. HEPA filters typically last 6–12 months depending on usage, while carbon filters should be changed every 3–6 months.
Is It Worth Paying More For A Quieter Unit?
If you work in occupied homes, offices, or healthcare settings, a quieter unit enhances client satisfaction and makes for a more comfortable work environment.
What Does It Mean If An Air Scrubber Has Negative Air Capability?
It means the unit can be ducted to vent contaminated air out of a sealed space, creating negative pressure. This is essential for mould remediation and asbestos jobs.
Can I Use One Air Scrubber For Multiple Rooms?
You can, but it depends on the layout and total square footage. If rooms are connected and airflow is unrestricted, a single powerful unit may suffice. Otherwise, multiple units are more effective.
Are There Energy-Efficient Air Scrubbers Available In Canada?
Yes. Look for models with variable speed controls and low wattage ratings. Energy-efficient units not only save money but are also easier to run on limited job site circuits.
If you have any questions about our article “Top Tips On How To Buy An Air Scrubber: What To Look For” or need air scrubbers, contact us at sales@brothers-equipment.com or contact us on social media.
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