The Best Air Purifier & Furnace Filter

We install a range of whole house air purifiers, furnace filters and HVAC filters. Get best air purifier for your home..

Best Furnace Filter - Best Air Purifier

Choice of a furnace filter or an air purifier is more important than the choice of the furnace itself. A good (5 inch wide) furnace air filter has large surface that can catch a lot of dust without restricting the airflow. Bad furnace air filter (1 inch wide) can ruin the best furnace and the air conditioner. With a good furnace filter even entry level furnaces will last and last.

  • 5 inch furnace filter
  • Is inexpensive
  • Needs to be replaced only once a year
  • Allows the fan to run at a lower speed
  • Reduces hydro cost
  • Reduces the fan motor wear and tear
  • Reduces noise

Benefits of a Good Furnace Filter

5 inch wide furnace filter will pay for itself in no time by reducing resistance to air flow. You will

  • save on hydro
  • improve air circulation especially in remote rooms
  • reduce blower motor's ware and tare
  • reduce sound level
5 inch furnace filter
5 inch Furnace Filter Is the Best Furnace Air Filter
1 inch furnace filter
Avoid 1 inch Furnace Filters

Lennox PureAir
furnace air purifier

In some situations, like allergies, homeowners install air purifiers (furnace filters) using advanced features. The success depends on the source of allergies. For example, if the source is a cat, no filter will help.

Lennox PureAir – air purification system has an exclusive UVA-light technology to destroy all three classes of particles:

  • Mold and Mildew
  • Odors and chemical vapours
  • Bacteria

Purifies the air in the house better than any other single system you can buy. PureAir, unlike other Electronic Air Cleaners, does not only create ozone but also destroys ozone gas (O3).

PureAir™ is a whole-home solution that means cleaner air in every room.

Hepa Air Purifier for Home

In some homes, filter HEPA type was used in the past before 5 inch filters came to the market. As you can see from the picture, the HEPA air filter diverts only a part of the air flow, usually 1/4. Only that part of the air flow goes through the hepa air purifier and gets cleaned.

These days we have 5 inch furnace air filter that does exactly the same job as HEPA furnace filter but for the entire air flow, not just 1/4 of it. Also, it eliminates a restrictive 1 inch filter. All this makes use of HEPA air purifier for home obsolete.

Once again, for anything that HEPA furnace filter is trying to do for a part of air we have a whole house furnace filter that does the same for the entire air flow.

HEPA Air Purifier for Home
Hepa Air Purifier for Home

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Why Choose Cozy World Inc?


With over three decades of experience in the HVAC industry, Cozy World brings a wealth of knowledge and expertise to every project, ensuring reliable and efficient solutions for your home.

Certified & Insured

Our team consists of certified professionals who are fully insured, providing you with peace of mind knowing that your HVAC needs are in capable hands.

Authorized Dealer

As an authorized Lennox dealer, we offer access to the latest technology and products, delivering quality and innovation to your home.

Energy Efficiency

Cozy World is your partner in maximizing energy efficiency. Our team is well-versed in eco-friendly HVAC solutions to help reduce your carbon footprint and lower energy costs.

Transparent Pricing

At Cozy World, we believe in transparency. Our pricing is straightforward and competitive, so you can make informed decisions about your HVAC investments.

Professional Installation

Our commitment to professionalism extends to every installation. We take pride in our meticulous work, ensuring that your HVAC system is installed with precision and care.

Rated Best HVAC Company

CLICK BELOW to see reviews from Google, Lennox and Homestars

Ruy Carreiro
Ruy Carreiro
a week ago
They arrived when promised removed the old furnace installed the new one all within 4 hours swept the furnace room wiped down everything and left it better than the found it. These guys are truly professionals and I will not use anyone else for any of my HVAC needs. Most importantly their price was very competitive. Thank you.
Mark Shannon
Mark Shannon
in the last week
Cozy World, The July long weekend came, and our AC was working, we went out for a few hours, came back and it wasn’t! Long weekend and no A/C, thanks to the cool air mass it was bearable. So, we called Costco, left our name and phone number, etc. Next morning, we received a call from Fred who worked at Cozy World, who was at…
Bill Welch
Bill Welch
a year ago
I was on the hunt for a cold climate heat pump system to replace our 20 year old Carrier system. Based on all the great reviews on Google and Homestars, I picked Cozy World (after receiving 2 other quotes from other companies). Boris was extremely knowledgable and responsive providing a great quote for a Lennox Signature heat pump/furnace system. No matter how many questions I…
Kevin Zhang
Kevin Zhang
4 months ago
Used this company twice. They installed a new AC unit for me last summer. Efficient and easy to work with. This past week, they did maintenance on my furnace as I noticed some performance issues and its a very old one. The gentlemen did a great job explaining the situation and what he did. Furnace now runs much better and noticeably saving gas. Definitely recommend…
John Tsui
John Tsui
2 months ago
Have used the maintenance service since the installation of the furnace and A/C from Cozy World for few years. Their service was punctual, excellence, courteous and honest as well as their service fee is reasonable. Highly recommend!!!!

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