Scroll to top
Book a Service Visit

HVAC Mold Remediation for Toronto Condos

Musty smell when your HVAC runs? Visible mold on coils or vents? Allergies getting worse at home? Your fan coil or heat pump could be circulating mold spores through your living space.

Mold thrives in the damp environment inside condo HVAC units. It grows on evaporator coils, drain pans, and blower wheels—then gets blown throughout your home every time the fan runs. Hudson HVAC provides complete mold remediation: thorough cleaning, HEPA vacuuming, antimicrobial treatment, and preventive solutions to stop regrowth.

Breathing Issues at Home?
HVAC mold can trigger allergies, asthma, and respiratory problems. Don't wait—get it professionally removed.
Call (437) 448-0640 Request Service Online
HVAC mold remediation service Toronto
#1 Most Trusted By Property Managers

Concerned About Air Quality?

If someone in your home has asthma, allergies, or respiratory issues, HVAC mold can significantly impact their health. We prioritize remediation for health-sensitive situations and can typically schedule within 1-2 business days.

Request Priority Service

(437) 448-0640

Typical scheduling: Within 24 Hours

Signs your HVAC has mold

Don't ignore these warning signs. Mold in your HVAC system affects your health every time the unit runs—and it won't go away on its own.

Musty Smell

Earthy, musty, or "dirty sock" odor when HVAC runs. The #1 indicator of mold growth inside your unit.

Visible Mold

Black, green, or fuzzy growth on vents, coils, or drain pan. If you can see it, there's more hidden inside.

Allergy Symptoms

Sneezing, runny nose, itchy eyes that worsen when HVAC runs. Mold spores circulating through your home.

Respiratory Issues

Coughing, wheezing, asthma flare-ups, or difficulty breathing at home. HVAC mold can trigger serious symptoms.

Fatigue & Headaches

Unexplained tiredness or headaches when home that improve when away. Mold exposure can cause systemic symptoms.

Dark Spots on Vents

Dark spots or discoloration around supply vents. Mold spores are being deposited as air flows through.

Before and after HVAC mold remediation Toronto

What causes mold in Toronto condo HVAC systems?

Mold needs moisture, warmth, and organic material—and your fan coil or heat pump provides all three. Here's why mold growth is so common in condo HVAC units.

Constant Moisture

During cooling, condensation constantly forms on your evaporator coil and collects in the drain pan. This perpetually damp environment is ideal for mold to colonize and spread.

Dust & Organic Material

Dust, skin cells, pet dander, and other organic particles coat wet coils and accumulate in drain pans. This provides the food source mold needs to thrive.

Dark, Enclosed Spaces

The interior of your HVAC unit is dark and enclosed—exactly where mold loves to grow. Without UV light exposure and with limited air circulation when off, mold proliferates unchecked.

Poor Drainage

Clogged or slow drain lines create standing water in the drain pan. This stagnant water becomes a breeding ground for mold, bacteria, and algae—all contributing to poor air quality.

Infrequent Cleaning

Many condos only get filter changes—not coil or drain pan cleaning. Without annual deep cleaning, mold has years to establish itself before anyone notices the symptoms.

Our HVAC mold remediation process

We don't just wipe visible mold—we eliminate it from every affected surface and treat to prevent regrowth. Here's our proven approach.

1
Assessment & Containment

We access and inspect all HVAC components—coils, drain pan, blower wheel, and cabinet. We assess mold severity and take steps to prevent spore spread during cleaning.

2
HEPA Vacuuming

We use HEPA-filtered vacuums to capture loose mold spores, dust, and debris from all accessible surfaces. HEPA filtration prevents spores from becoming airborne during removal.

3
Coil Deep Cleaning

We apply commercial-grade coil cleaner and use specialized brushes and pressure washing to remove mold from evaporator coil fins and surfaces where spores embed.

4
Drain Pan & Blower Wheel

We thoroughly clean the drain pan, clear the drain line, and when accessible, clean the blower wheel—a common hiding spot for mold that spreads spores with each rotation.

5
Antimicrobial Treatment

We apply EPA-registered antimicrobial treatment to all cleaned surfaces. This kills remaining spores and creates a protective barrier that inhibits future mold growth.

6
Testing & Documentation

We test unit operation, verify proper drainage, and run the system to check for any remaining odors. Detailed service report with before/after photos documents all work performed.

Mold remediation services we provide

Complete mold elimination from all components of your condo HVAC system. We address both fan coils and heat pumps throughout the Toronto area.

Coil Cleaning & Treatment
  • Evaporator coil mold removal – Deep cleaning of moldy coil surfaces
  • Coil pressure washing – High-pressure cleaning for severe buildup
  • Fin straightening – Restoring bent fins for proper airflow after cleaning
  • Antimicrobial coating – Protective treatment to prevent regrowth
  • Condenser coil cleaning – For heat pumps with outdoor components
Drain System Treatment
  • Drain pan mold removal – Eliminating mold from pan surfaces
  • Drain line clearing – Removing algae and mold blockages
  • Pan replacement – New pans for severely contaminated units
  • Drain tablets – Slow-release antimicrobial for ongoing protection
  • Proper drainage verification – Ensuring water doesn't pool
Blower & Cabinet
  • Blower wheel cleaning – Removing mold from fan blades that spread spores
  • Cabinet interior cleaning – Sanitizing all interior surfaces
  • Motor area cleaning – Careful cleaning around electrical components
  • Filter housing sanitization – Cleaning filter area and housing
  • Cabinet sealing – Repairing gaps where dust and spores enter
Prevention & Maintenance
  • UV light installation – Germicidal lights that kill mold continuously
  • Filter upgrades – Higher MERV-rated filters to capture more spores
  • Humidity control advice – Recommendations to reduce mold-favorable conditions
  • Annual cleaning programs – Scheduled maintenance to prevent mold return
  • Air quality monitoring – Verifying improvement after remediation

Equipment we provide mold remediation for

Mold can grow in any HVAC system that produces condensation. We provide mold remediation for all equipment types found in Toronto condominiums.

Fan Coils

2-pipe & 4-pipe systems

Heat Pumps

Water-source WSHP

ERVs/HRVs

Energy recovery units

PTACs

Through-wall units

All brands: Unilux, ClimateMaster, Carrier, Trane, Florida Heat Pump, Mammoth, McQuay, First Co., IEC, and all other manufacturers. We remediate mold regardless of equipment brand or age.

Why Toronto condo residents choose Hudson for mold remediation

Google 5.0
Based on 606+ reviews
See Reviews

HVAC mold specialists

We focus exclusively on condo HVAC systems. Our technicians know exactly where mold hides in fan coils and heat pumps—and how to eliminate it completely.

HEPA & antimicrobial

We use HEPA-filtered vacuums to prevent spore spread and EPA-registered antimicrobials that kill mold and inhibit regrowth—not just household cleaners.

Complete remediation

We clean all affected components: coils, drain pan, blower wheel, and cabinet. Partial cleaning just allows mold to return quickly from untreated areas.

Before/after photos

We document mold conditions before and after remediation with detailed photos. Useful for records, insurance, or simply seeing the difference in your unit.

Priority for health issues

If someone in your home has asthma, allergies, or respiratory conditions, we prioritize your service. HVAC mold can significantly impact their health.

Prevention programs

Include mold prevention in annual maintenance programs. Regular coil and drain pan cleaning prevents mold from establishing.

For property managers

Mold complaints are challenging—they affect resident health, require prompt action, and can spread between units. We help you address mold issues professionally.

  • Building-wide programs: Proactive coil and drain pan cleaning for all units prevents mold before complaints arise.
  • Resident complaints: When residents report musty odors, we inspect and remediate quickly with full documentation.
  • Photo documentation: Before/after photos for each unit provide evidence of remediation for resident records.
  • Multi-unit coordination: If mold is affecting multiple units, we can service efficiently in one scheduled visit.
Contact for Building Programs
Hudson property manager dashboard for mold remediation Hudson resident portal for service requests

Related services & resources

Related repair services
Maintenance programs

Frequently asked questions

A musty or moldy smell when your HVAC runs indicates mold growth inside your unit—typically on the evaporator coil, in the drain pan, or on the blower wheel. These components stay damp during cooling and become breeding grounds for mold. Every time the fan runs, it circulates mold spores through your living space. Professional remediation eliminates the source and restores clean air.

HVAC mold remediation in Toronto condos typically costs $300-$600 for a standard fan coil or heat pump, depending on severity and accessibility. Severe cases requiring extensive coil cleaning, blower wheel removal, and multiple treatments may cost $500-$800. This includes HEPA vacuuming, antimicrobial treatment, and preventive coating. Compared to health impacts, professional remediation is worthwhile.

Any mold growing in your HVAC system can cause health issues. While not all dark-colored mold is the infamous "black mold" (Stachybotrys), all types of mold can trigger allergies, asthma, respiratory problems, headaches, and fatigue—especially when circulated through your home. Visible mold should be professionally remediated promptly, regardless of color.

Mold needs moisture, warmth, and organic material—your HVAC provides all three. During cooling, condensation forms on the evaporator coil and collects in the drain pan. Combined with dust and debris that accumulates on coils, this creates ideal conditions for mold. Poor drainage, infrequent maintenance, and lack of airflow when the unit is off accelerate growth.

DIY mold cleaning is not recommended for several reasons: 1) You may spread spores and make the problem worse, 2) Consumer products don't penetrate deep into coils, 3) Without proper containment, spores become airborne, 4) You need specialized equipment to access all affected areas. Professional remediation uses HEPA vacuums and commercial-grade antimicrobials to eliminate mold safely.

Signs of mold in your HVAC include: 1) Musty or earthy smell when the unit runs, 2) Visible black, green, or white growth on coils, drain pan, or vents, 3) Allergy symptoms that worsen when HVAC is running, 4) Headaches or fatigue when home that improve when away, 5) Respiratory issues after moving in or after summer. If you suspect mold, schedule an inspection.

Without addressing underlying conditions, mold can return. Our remediation includes antimicrobial treatments that inhibit regrowth, but long-term prevention requires: 1) Regular maintenance including coil and drain pan cleaning, 2) Proper drainage to prevent standing water, 3) Running the fan periodically to reduce moisture, 4) Quality air filters changed regularly. We recommend annual cleaning to prevent recurrence.

Yes. HVAC mold is particularly problematic because it's actively circulated throughout your living space. Health effects include: allergic reactions, asthma attacks, respiratory infections, chronic cough, headaches, fatigue, and skin irritation. Immunocompromised individuals, children, elderly, and those with respiratory conditions are at highest risk. Eliminating HVAC mold can significantly improve indoor air quality and health.

Most condo fan coil or heat pump mold remediation takes 2-4 hours. This includes unit disassembly, HEPA vacuuming, coil and drain pan cleaning, blower wheel cleaning, antimicrobial treatment, and reassembly. Severe cases may require a follow-up visit for additional treatment. We test airflow and operation before leaving to ensure everything functions properly.

We offer visual inspections and can collect samples for laboratory testing if needed. However, for most condo HVAC systems, visible mold or musty odors are sufficient to warrant remediation. Lab testing adds cost and delays treatment. If you're experiencing symptoms or smell mustiness, we recommend proceeding directly to remediation rather than waiting for test results.

Coverage depends on your specific policy and the cause of mold. Most standard condo insurance policies don't cover mold remediation resulting from deferred maintenance. However, if mold resulted from a covered peril (like a sudden water leak), you may have coverage. We provide detailed documentation and invoices that can be submitted to your insurance company.

Both mold and mildew are fungi that grow in damp conditions. Mildew is typically lighter colored (white or gray) and grows on surfaces; it's easier to clean. Mold penetrates deeper into materials, often appears black or green, and is more difficult to remove. Both cause health issues when circulated through HVAC systems. Our remediation process treats both conditions.

Yes. Mold spores from your HVAC can land and colonize other damp areas in your home, particularly near vents, windows, or areas with poor air circulation. If your HVAC has mold, address it promptly to prevent spreading. If you already have visible mold on walls or ceilings, you may need both HVAC remediation and general mold remediation from a certified contractor.

Antimicrobial treatments are EPA-registered products that kill mold, bacteria, and other microorganisms on contact and leave a protective barrier that inhibits future growth. We apply these to all cleaned HVAC surfaces after mold removal. Unlike household cleaners, professional antimicrobials are formulated for HVAC applications and provide lasting protection.

Yes, germicidal UV-C lights can kill mold and bacteria on surfaces they illuminate. We can install UV lights in your fan coil or heat pump that continuously treat coils and drain pans, preventing mold regrowth between cleanings. UV lights are an add-on option after initial remediation—they maintain clean conditions but don't replace the need for deep cleaning.

Several factors increase mold risk: 1) High-humidity buildings or units with poor ventilation, 2) Units that run heavily in summer generating more condensation, 3) Poor drainage in drain pans or lines, 4) Lack of regular maintenance, 5) Older equipment with accumulated debris. Some buildings near water or with chronic humidity issues see more widespread problems.

Yes. Water-source heat pumps are actually more prone to mold than fan coils because they generate condensation during both heating and cooling modes—year-round moisture accumulation. The same remediation process applies: HEPA vacuuming, coil and drain pan cleaning, and antimicrobial treatment. Regular maintenance is especially important for heat pumps.

Higher-rated filters (MERV 11-13) can capture more dust and organic particles before they coat wet coils—reducing the food source mold needs. However, filters don't address the primary issue: moisture in the unit. They're part of prevention, not a solution for existing mold. We can recommend appropriate filter upgrades during remediation.

Running the fan periodically (not continuously) can help dry out wet coils and reduce moisture that mold needs to grow. However, running it too much in humid conditions can actually increase humidity in your unit. The best approach is proper maintenance: annual coil cleaning, functional drainage, and antimicrobial treatment. Ask us about fan settings for your specific situation.

Yes. Our service reports include photos of mold conditions before and after remediation, a description of work performed, products used, and recommendations for prevention. This documentation is useful for your records, for providing to property management if required, or for insurance purposes. We take pride in visible results.

Musty smell? Visible mold? Breathe clean air again.

Schedule professional HVAC mold remediation. We'll eliminate mold from your fan coil or heat pump and treat to prevent regrowth.

(437) 448-0640 Book Online

Toronto's trusted condo HVAC mold remediation specialists

Get Help Now
Call Us