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Breathe Cleaner, Live Better — Our Top-Selling Filters
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CREATE A CUSTOM FILTERShop by Air Filter MERV Rating
MERV
8
MERV 8
STANDARD
MERV
11
MERV 11
SUPERIOR
MERV
13
MERV 13
OPTIMAL
MERV stands for Minimum Efficiency Reporting Value – it is a filter rating that shows how well an air filter captures particles from the air.
💎 Premium Quality Furnace Air Filters
We are a manufacturer and distributor of filtration or Air Filter or Furnace Filter products.
Effective air filtration is important for enhancing the indoor air quality of your home or business. Without it, the indoor air quality could be contaminated with harmful particles that can affect your overall health. You'll get cleaner air and better performance with our pleated furnace filters. We offer a wide choice of HVAC filters for both residential and commercial settings.
Bag Filters, Geothermal Filters, HEPA Filters, Rigid Box Filters
Breathing Easy - What you might not know about filters
Most people pay little attention to their HVAC system. As long as it keeps them warm in winter and cool in summer, why worry? We understand. Beautiful mouldings, new roofing, or upgraded windows can all make a dramatic difference — but big impact can come from small decisions, and choosing the right filter is one of them.
WHO WE ARE UNITED FILTER
Proudly Canadian, United Filter delivers high-quality air filtration solutions for homes, businesses, and institutions. With a focus on performance, value, and sustainability, we’re trusted by HVAC professionals across North America.
Why Our Customers Trust UNITED FILTER
BUILT FOR QUALITY
Engineered for heavy-duty filtration and extended lifespan
PROUDLY MADE IN CANADA
Breathe Easy with United Filter
We prioritize providing superior quality furnace air filters
SUPERIOR QUALITY
Designed for Family Health
Our furnace filter keeps your air fresh & your family safe
KEEPS YOUR FAMILY SAFE
Work & Home
Clean air solutions for residential & commercial needs
CLEANER INDOOR AIR
❓ Frequently Asked Questions
🧠 The frequency of air filter replacement depends on several factors, such as filter type, indoor air quality, household size, and whether you have pets. In general, it is recommended to replace standard 1-inch filters every 1 to 3 months. High-efficiency filters may last longer, up to 6 to 12 months.
🧠 High-efficiency air filters, such as HEPA filters, can remove smaller particles and allergens. They are worth it if you or your family members suffer from allergies, asthma, or respiratory issues. However, they can also put additional strain on HVAC systems not designed for them.
🧠MERV(Minimum Efficiency Reporting Value) is a rating system for air filters that ranges from 1 to 16. Higher MERV ratings indicate better filtration. HEPA (High-Efficiency Particulate Air) filters are a specific type of high-efficiency filter that can capture at least 99.97% of particles as small as 0.3 microns.
🧠 Some air filters are designed to help with odors by incorporating activated carbon layers that absorb volatile organic compounds (VOCs) and other odor-causing particles. Standard particulate filters generally won't address odors.
🧠 To choose the right air filter, consider factors such as the size of the filter required by your HVAC system, desired MERV rating, any specific allergies or health concerns, and whether odor control is important. Also, ensure that the filter won't overly restrict airflow for your HVAC system.