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Serving Toronto & the GTA Since 1999
24/7 Emergency Service
Enbridge Sustain Trusted Partner
Licensed & Insured · TSSA Certified
5.0 Google · 5.0 HomeStars
Serving Toronto & the GTA Since 1999
24/7 Emergency Service
Enbridge Sustain Trusted Partner
Licensed & Insured · TSSA Certified
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Indoor Air Quality
24/7 Emergency Service

Indoor Air Quality Services in Toronto

Advanced air purification and filtration solutions for your home.

Megacity HVACEnbridge Sustain Trusted Partner
24/7 Emergency Service
Serving All Toronto Neighbourhoods
TSSA Certified Technicians
5.0 Google & HomeStars
Customer Reviews
5.0 / 5.0 · 104+ Google reviews
Enbridge Sustain Trusted PartnerAuthorized Enbridge Sustain Trusted Partner — $0-Down Financing on a New System
Indoor Air Quality Experts

Indoor Air Quality Services in Toronto

The air inside your home can contain allergens, dust, bacteria, mold spores, and volatile organic compounds. We install air purification systems, filters, humidifiers, and UV treatment systems that actually make a difference.

Our UV Air Treatment Systems are installed directly into your HVAC's evaporator coil, purifying every cubic foot of air that passes through. UV-C light technology kills up to 99.9% of mold, bacteria, and viruses.

Kills mold and bacteria
Removes allergens and dust
UV-C light purification
HEPA filtration options
Whole-home solutions
Energy Star rated
Humidifier installation
Works with your existing HVAC

24/7 Emergency

Real answer, day or night — no extra fees for evenings or weekends.

Upfront Pricing

A fixed price before any work starts. You approve it first.

TSSA Certified

Licensed, background-checked techs and full manufacturer warranty support.

5.0★ · 100+ Reviews

Top-rated on Google and HomeStars, serving Toronto since 1999.

Air Filtration & Purification

From HEPA filters to electronic air cleaners, we offer a range of filtration solutions. Our technicians will assess your current system and recommend the best purification strategy for your needs.

Humidifiers & Dehumidifiers

Proper humidity levels are important for comfort and health. We install whole-home humidifiers and dehumidifiers that connect directly to your existing HVAC system.

Why Indoor Air Quality Matters

Canadians spend roughly 90% of their time indoors, and indoor air can be 2-5 times more polluted than outdoor air according to Health Canada. In Toronto, seasonal allergens, dust mites, pet dander, mold spores, and cooking fumes all accumulate in your home's air. A proper filtration and ventilation system removes these contaminants, reduces allergy symptoms, and creates a healthier environment for your family.

How We Assess Your Home Before Recommending Anything

We start with the system you already have, because half the time the fix is in there. We check what filter is fitted and whether the cabinet can take a thicker one, look at static pressure across the coil, open the return to see how much air is bypassing the filter through gaps in the sheet metal, and inspect the evaporator coil and drain pan for mold. We also ask what you are actually noticing, whether that is dust settling two days after cleaning, a musty smell when the fan kicks on, or allergies that get worse indoors rather than outdoors. The symptom points at the cause. Dust everywhere is usually a filter bypass problem. A musty smell when the blower starts is usually the coil. Winter nosebleeds and static shocks are humidity.

When an Air Quality Upgrade Is Worth It, and When It Is Not

A UV coil treatment is worth it if you have visible mold on the evaporator coil or a persistent musty smell that returns after cleaning. It is not worth it as a general precaution in a dry, clean system. Media filtration at MERV 11 to 13 is worth it in almost any Toronto home with allergy sufferers or pets, provided the furnace can handle the extra static pressure. A whole-home humidifier is worth it if your winter indoor humidity sits below 30%, which in a forced-air home it usually does. A dehumidifier is worth it if you get condensation on the windows or a damp basement in July. What we will not do is sell you all four. If the honest answer is that a better filter and sealing the gaps at the return will fix what is bothering you, that is the answer you get.

Ventilation: HRVs and ERVs

Newer and well-sealed Toronto homes trap stale air along with the pollutants in it. Filtration cleans the air you already have; ventilation replaces it. A heat recovery ventilator exchanges indoor air for outdoor air while transferring most of the heat back, so you are not throwing your heating bill out the vent. An energy recovery ventilator does the same and also moves some moisture, which suits homes that get too dry in winter. In older leaky homes the building often ventilates itself through the gaps, and adding a unit is not the first thing we would recommend.

What Filter Maintenance Actually Looks Like

A standard 1-inch filter needs changing every one to three months, sooner with pets or during a renovation. A 4 or 5-inch media filter typically runs six to twelve months. UV bulbs lose output long before they stop glowing, so they get replaced annually whether or not the light is still on. Humidifier pads get changed at the start of each heating season. If you are on one of our maintenance plans, we handle the filter and the UV bulb at the visit, and we note the model numbers so you are not guessing at the hardware store.

Our Process

What to Expect

1

Air Quality Assessment

We evaluate your current system, existing filtration, and problem areas in your home.

2

Solution Recommendation

UV treatment, upgraded filtration, humidifier — or a combination tailored to your needs.

3

Professional Installation

Every solution is installed directly into your existing HVAC — no freestanding units.

4

Verify & Educate

We confirm operation and show you how to maintain your new system going forward.

Diagnostics

Common Indoor Air Quality Issues We Fix

Most are resolved same-day with parts we carry on our trucks.

Allergy Symptoms Worsen Indoors

Pollen, pet dander, and dust mite allergens accumulate without HEPA-grade filtration. UV treatment adds an antimicrobial layer.

Assessment included

Musty or Stale Odours

Mold on the evaporator coil or inside ductwork. A UV coil treatment eliminates the source rather than masking it.

$300 – $700

Excessive Dust Buildup

Standard 1-inch filters miss fine particles. Upgrading to MERV 11–13 media filtration dramatically reduces dust redeposition.

$200 – $500

Dry Air in Winter

Forced-air heating drops indoor humidity below 30%. A whole-home bypass humidifier restores comfort and protects wood floors.

$500 – $900

Condensation on Windows

Excess indoor humidity encourages mold and rot. A whole-home dehumidifier integrated into the HVAC system resolves it.

$600 – $1,200

Chemical or VOC Smells

Off-gassing from new finishes, cleaning products, and furniture builds up without ventilation. ERV or HRV systems dilute indoor pollutants.

$800 – $2,500
Brands We Install

Trusted Equipment Brands We Install & Service

Authorized Lennox Dealer — with experienced installation, repair, and maintenance across our supported HVAC and water-heater brands.

Lennox HVAC
Goodman HVAC
FUJITSU
Daikin HVAC
JOHN WOOD
Mitsubishi Electric HVAC
KeepRite HVAC
York HVAC
Navien HVAC
Ducane HVAC
Kepler HVAC
Enbridge Sustain Trusted Partner
$0
Down
Trusted Partner

Lease-to-Own Through Enbridge Sustain

Air quality upgrades can often be rolled into an Enbridge Sustain lease-to-own plan alongside a new furnace or heat pump. Ask us what’s available for your home.

  • No upfront cost — $0 down on approved credit
  • Maintenance and repairs included for the term
  • Predictable, manageable monthly payments
See Financing Options
Common Questions

Indoor Air Quality FAQ

How does a UV air purifier work?

UV air purifiers use ultraviolet light to neutralize airborne pathogens like bacteria, viruses, and mold spores as air passes through your HVAC system.

Is UV air treatment safe?

Absolutely. The UV light is contained within your ductwork, so there's zero exposure to your family.

How often do I need to replace the UV bulb?

Most UV bulbs should be replaced annually to maintain effectiveness. We offer maintenance plans that include bulb replacement.

Will an air purifier help with allergies?

Yes! Air purification systems significantly reduce allergens like pollen, pet dander, dust mites, and mold spores.

How do I know if my indoor air quality is bad?

Common signs include allergy symptoms that worsen at home, musty or stale odours, visible dust buildup shortly after cleaning, condensation on windows, and family members experiencing headaches or fatigue indoors. A professional assessment can identify the specific contaminants affecting your home.

What MERV rating air filter should I use?

For most Toronto homes, we recommend MERV 11-13 filters. They capture dust, pollen, mold spores, and pet dander without restricting airflow to your furnace. Higher MERV ratings (14+) can restrict airflow and strain your system unless it's designed for them. We'll recommend the right filter for your specific HVAC setup.

Do I need an air purifier, or will a better filter do?

In most homes a thicker media filter at MERV 11 to 13, fitted in a cabinet that actually seals, does more than a standalone purifier because it treats every cubic foot the blower moves. A UV system is the right call when the problem is biological growth on the coil rather than particles in the air. We look at the coil and the return before recommending either.

What indoor humidity should a Toronto home hold in winter?

Between 30% and 45% is the usual working range. Below 30% you get dry skin, static, and shrinking hardwood. Push much above 45% in a cold snap and you start getting condensation and frost on the windows, which causes its own damage. A whole-home humidifier with a humidistat holds the level instead of you chasing it.

Can indoor air quality equipment be added to my existing furnace?

Almost always, yes. UV treatment, media filtration, humidifiers and dehumidifiers all install into the existing ductwork and share the furnace blower. The limits are physical space around the plenum and whether the furnace has the static pressure headroom for a thicker filter. We check both on site before quoting.

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Get In Touch

Get a Free Indoor Air Quality Estimate in Toronto

Tell us what your system is doing and we will get back to you fast. Same-day service available across Toronto and the GTA — or call and talk to a real person now.

Call 24/7(416) 286-5665
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Proudly serving Toronto & the Greater Toronto Area from our East York office since 1999.

Megacity HVAC

Address
885 O'Connor Dr, East York, ON M4B 2S7
Hours
Mon – Sun: 7:00 AM – 11:00 PM
24/7 Emergency Service Available