What does a HEPA filter actually remove?

True HEPA filtration captures up to 99.97% of airborne particles down to 0.3 microns — that includes pollen, dust, pet dander, mold spores, and much of the fine particulate in smoke. It is the same class of filtration used in hospitals and clean rooms.

How is HEPA different from the filter already in my furnace?

A standard furnace filter is intentionally open so the blower can move enough air; it traps larger debris but lets most fine particles through (typically a low MERV rating). A whole-home HEPA system uses far denser media and is installed as a bypass so it can filter to HEPA levels without choking your furnace’s airflow.

Can I just put a HEPA filter in my existing filter slot?

No — and you should not try. HEPA media is too dense for a standard furnace filter slot; it would restrict airflow, strain the blower, and hurt efficiency. A proper whole-home HEPA system is installed as a bypass loop alongside your furnace so it filters thoroughly without starving the system for air.

Is HEPA filtration good for allergies and asthma?

Yes. Because it captures the fine particles that trigger symptoms — pollen, dander, dust, and mold spores — whole-home HEPA filtration is one of the most effective upgrades for households with allergies, asthma, or sensitivity to smoke.

How often does the filter need changing?

Whole-home HEPA cartridges last much longer than a standard 1-inch filter — often a year or more depending on your home and air quality. We size the system for your home and tell you the expected replacement schedule, and we can handle changes at your annual furnace tune-up.

Whole-Home HEPA Air Filter Installation in Toronto

The standard filter in your furnace is built to protect the equipment, not to clean your air. A whole-home HEPA system captures up to 99.97% of the fine particles, allergens, dust, and smoke that ordinary filters miss — quietly, for the whole house. Imperial Heating installs whole-home HEPA filtration across Toronto and the GTA.

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Why a Whole-Home HEPA Filter

If anyone in your home has allergies, asthma, or sensitivity to dust and smoke, the air your furnace circulates matters.

Captures 99.97% of Fine Particles

HEPA media traps particles down to 0.3 microns — pollen, dust, dander, mold spores, and much of what makes up smoke — the particles standard filters let pass.

Relief for Allergies and Asthma

By removing the triggers that circulate through your ducts, whole-home HEPA filtration is one of the most effective comfort upgrades for sensitive households.

Cleaner Home, Less Dust

Filtering the air the whole system moves means less dust settling on surfaces and cleaner air in every room — not just where a portable purifier sits.

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How We Install Whole-Home HEPA

Air Quality Assessment

We look at your furnace, ductwork, and the concerns in your home — allergies, pets, smoke, dust — and size the right whole-home HEPA system for your airflow.

Bypass Installation

The HEPA system installs as a bypass loop alongside your furnace so it can filter to HEPA levels without restricting the airflow your furnace needs.

Duct and Seal

We tie the unit into your supply and return, seal every connection, and make sure the system is air-tight so all the air is actually being filtered.

Testing and Walkthrough

We run the system, confirm proper airflow, and show you the cartridge and its expected replacement schedule.

HEPA vs. a Standard Furnace Filter

They are not the same job. One protects the furnace; the other cleans your air.

Standard 1-Inch Filter

Intentionally open so the blower can move air
Traps larger debris; misses most fine particles
Low MERV — limited effect on allergens and smoke
Needs changing every 1–3 months

Whole-Home HEPA System

Installed as a bypass so it does not choke airflow
Captures up to 99.97% of particles to 0.3 microns
Hospital-grade — real impact on allergens and smoke
Long-life cartridge, often a year or more

HEPA Air Filter FAQs

Common questions about whole-home HEPA filtration for Toronto homes.

Related Services

Electronic Air Cleaner

Reusable, washable filtration that needs no replacement filters.

Whole-Home Humidifier

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Furnace Installation

Add HEPA filtration with a new high-efficiency furnace.

Indoor Air Quality

Full range of air quality solutions for your home.

Furnace Maintenance

Tune-ups that include filter and system service.

Financing

Flexible payment options on comfort upgrades.