Furnace Filters
In Kitchener-Waterloo
We deliver top air purification and furnace filters in Kitchener‑Waterloo, Cambridge, and Guelph. We know local homes and indoor air challenges. If you’re dealing with dust, allergies, pet dander, or odors, we’ve got you covered with top-quality furnace filters. Get in touch now!
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Furnace Filters & Humidifier Pads for Every Home
Changing your furnace filters regularly will help keep your furnace functioning smoothly and reduce the risk of premature breakdowns. We carry a wide variety of furnace filters and water panels for humidifiers. If you don’t see your filter or humidifier pad in our store, give us a call or fill out our contact form, and we will special order it for you.
Top-Rated Furnace Filters
What Do We Offer?
We provide a full line of furnace filters in Kitchener‑Waterloo, including:
Standard furnace filters
High-efficiency pleated furnace filters
Replacement furnace filters (MERV 11, MERV 13)
Replacement humidifier pads
Replacing furnace filters can prolong furnace life, especially in pet or allergy households. Need help choosing the right fit? Contact us now!
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When to Swap Out Your Furnace Filter
Signs You Need New Filters
Dust Buildup
Noticing dust gathering on furniture or vents? A clogged filter may not be trapping particles effectively.
Irritated Eyes & Throat
Dry or irritated eyes and throat indoors can signal poor air quality from a dirty filter.
Lingering Odors
Smoker smell or strong cooking odors lingering? Your filter may be too dirty to handle them.
Musty or Moldy Smells
A faint, musty, or moldy odor could mean your filter is harboring mold spores.
Allergy or Asthma Symptoms
Worsening allergies or asthma at home may indicate your filter isn’t catching allergens.
Reduced Airflow or Noisy HVAC
Weak airflow or a noisy HVAC fan suggests a clogged filter, overworking your system.
Dirty filters block airflow, forcing your furnace to work harder. Regular replacement boosts performance and saves on energy costs.

Breathe Easier Today!
Call us to ask about furnace filter prices in Kitchener-Waterloo, replacement filters and humidifier pads, or full HVAC services with filter maintenance included. We’ll help you choose the right filters for your home. Get a free quote now!
Power of Premium Furnace Filters & Humidifier Pads
Why Use Quality Furnace Filters & Humidifier Pads?
Cleaner Air, Healthier Home
Indoor air can be up to five times more polluted than outdoor air. Quality furnace filters trap harmful particles like:
Dust and dirt
Pollen and pet hair
Mold spores and bacteria
Regularly replacing filters keeps your home’s air fresh and safe, especially for pet owners or allergy sufferers.
Protect Your HVAC & Save Money
Fresh furnace filters and humidifier pads help your HVAC system run efficiently by:
Improving indoor air quality
Protecting HVAC system parts
Saving on energy bills
Extend the life of your furnace and keep your home comfortable year-round.
How Often Should You Change a Furnace Filter?
The frequency of replacing furnace filters depends on several factors, including the type of filter, the number of people living in the home, and the level of indoor air pollution. Some filters, such as fiberglass filters, need to be replaced every one to three months, while high-efficiency pleated filters can last up to six months.
However, it is recommended that the filter be checked monthly and replaced if it looks dirty or clogged. If pets are in the home or if anyone has allergies or respiratory problems, it may be necessary to replace the filter more frequently.

Testimonials
Hear from Our Happy Customers
Furnace Filters in Kitchener-Waterloo & the Surrounding Areas
Our local HVAC experts at Aire One KW offer fast, reliable service. Whether you need a replacement furnace filter, humidifier pad, or help with your heating and cooling systems, we’ve got you covered. From air purifiers to complete HVAC solutions, one call gets you the team you can trust. Our technicians proudly serve Kitchener-Waterloo, Guelph, and Cambridge. Our service areas include:
- Kitchener
- Waterloo
- Cambridge
- Guelph
- Woodstock
- Orangeville
- Perth East
- St. Marys

Hassle-Free Process
Expert Filter Replacement!
Keep your furnace running smoothly with our professional filter replacement service. Our skilled HVAC team arrives equipped with the right tools and filters, ensuring a perfect fit—whether it’s a pleated, high-efficiency MERV 11–13, or like an OEM or specialty filter.
We inspect your system, replace the filter, test airflow, and handle humidifier pads if needed. You’ll get clear guidance and reminders to stay on top of maintenance. One call, and we’ve got you covered!
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Frequently Asked Questions
Need help with furnace filters in Kitchener‑Waterloo or a humidifier pad swap? Want to book HVAC services? Call us now or schedule our services online. We’ll help you keep the air clean and HVAC running smoothly.
Schedule Service1-866-234-8200