Your air exchanger Is it making noise and seems less effective than before? Are there odors coming out of your vents even when they're supposed to be blowing fresh air?
It's probably because your HRV (heat recovery ventilator) or ERV (energy recovery ventilator) needs a good professional cleaning.
Why clean your air exchanger regularly?
Impact on indoor air quality
A clogged exchanger constantly stirs up the same dust and contaminants. Instead of making your air better, it makes it worse.
The accumulation of dirt in the exchange core drastically reduces its ability to filter incoming air. You end up with more pollen, dust and fine particles inside.
Compromised energy efficiency
A dirty exchanger has to work harder to circulate air. This can increase your electricity consumption by 25-40% easily.
Visit heat exchange core clogged, no longer transfers heat efficiently. In winter, you lose heat. In summer, you waste coolness.
Premature wear of components
Fans that push against the resistance caused by fouling wear out faster. A motor that should last 15 years may fail after 8-10 years.
Types of exchangers to be cleaned
Residential HRVs (Heat Recovery Ventilators)
- Broan-NutoneAll-generation HRV and ERV models
- VenmarSolo, Constructo, Kubik scales
- LifebreathComplete residential series
- Fantech: Compact and Standard VRCs
- ZehnderEuropean high-performance systems
Commercial ERVs (Energy Recovery Ventilators)
- CarrierCommercial and industrial units
- TraneHVAC systems with recovery
- LennoxHigh-capacity heat exchangers
- YorkModular and centralized units
Hybrid and specialized systems
- Geothermal heat exchangersWith heat pumps
- Variable flow systems: Sensor-controlled
- Units with dehumidificationFor very wet areas
- Industrial heat exchangersFor factories and warehouses
Our 8-step cleaning process
1. Comprehensive Inspection and Diagnosis
Check general condition, identify specific problems, test performance before cleaning to measure improvement.
2. Safe disassembly of components
- Removing the exchange coreGentle handling to avoid damage
- Filter extractionAll types (HEPA, electrostatic, standard)
- Fan removalBlade and motor cleaning
- Access to internal ductsSections usually inaccessible
3. Cleaning the specialized exchange core
This is the heart of the system. We use special detergents which dissolve build-up without damaging sensitive materials.
- Aluminum coresMild alkaline cleaning to prevent corrosion
- Plastic coresIntensive degreasing with biological agents
- Paper cores: Replace if too damaged by humidity
4. Cleaning fans and motors
- Blade degreasingEliminating the build-up that creates vibrations
- Residential cleaningDust that reduces engine cooling
- Bearing lubrication: Extending the useful life of mobile components
- Electrical check: Connections and speed calibration
5. Complete antimicrobial disinfection
Application ofantimicrobial agents which eliminate bacteria, mold and viruses that thrive in the humidity of heat exchangers.
6. Cleaning Connected Ducts
The ducts leading to the exchanger also accumulate dirt, which quickly contaminates a freshly cleaned system.
7. Filter replacement or cleaning
- Disposable filters: Replacement with high-quality equivalents
- Washable filtersProfessional cleaning and complete drying
- HEPA filtersIntegrity check and replacement if necessary
8. Reassembly and performance testing
Re-installation of all components and verification of correct operation. Air flow, noise level and exchange efficiency tests.
Specialized equipment for air exchangers
Special cleaning tools
- Adjustable soaking traysFor cores of different sizes
- Soft rotary brushes: Scratch-free cleaning of delicate surfaces
- High-pressure rinse systemComplete elimination of residues
- Compressed-air dryersQuick-drying without damage
Certified cleaning products
- Bio-Clean HRV: Degreaser specially formulated for heat exchangers
- Concrobium antimicrobial: Safe for sensitive materials
- Foster 40-80 disinfectantApproved for residential HVAC systems
- Neutralizing rinse: Removes all cleaning product residues
Signs that your heat exchanger needs cleaning
Visible performance problems
- Reduced air flow even at maximum
- Abnormal noisesVibration, hissing, squeaking
- Unpleasant odors that persist
- Dust accumulation faster around the house
- Excessive condensation on windows in winter
Indicators on the unit itself
- Dirty filters much faster than before
- Abnormal icing on components in winter
- Alarm lights that light up frequently
- Power consumption which increased without explanation
- Operating time longer for the same result
Impact on comfort and health
- Poor air qualityMore allergies and respiratory irritations
- Poorly controlled humidityToo dry in winter, too wet in summer
- Uneven temperaturesSome cooler or warmer rooms
- Unexplained fatigueLack of oxygen due to poor ventilation
Recommended cleaning frequency
Standard residential
Every 2-3 years for normal use with regular filter changes Annually dusty environments (near highways, construction sites) Every 18 months if pets or smokers are present
Commercial and industrial
Every 6-12 months by intensity of use and type of activity Quarterly for restaurants, medical clinics, day-care centers Monthly for processing plants or highly contaminated environments
Special situations requiring immediate cleaning
- After renovations: Construction dust quickly clogs up
- Following insect infestationComplete elimination of biological residues
- After water damagePrevention of mold growth
- Change of seasonOptimization before periods of intensive use
Problems specific to Quebec heat exchangers
Challenges of continental climate
- Extreme temperature variations-30°C to +35°C stress components
- Variable humidity: Dry air in winter, humid air in summer requires constant adaptation
- Freeze/thaw cyclesExpansion/contraction, which can lead to leaks
Typical seasonal contaminants
- Spring pollenMaple and birch trees, which quickly clog filters
- Summer dust: Gravel roads, active construction sites
- Autumn sporesMould from dead leaves penetrating through air intake
- Winter road saltAccelerated corrosion of metal components
Preventive maintenance included
Recommended seasonal checks
- SpringCleaning after winter accumulation
- SummerCooling and humidity control
- Autumn: Preparation for intensive heating season
- Winter: Icing monitoring and cold-weather performance
Regular maintenance services
- Programmed filter change: Automatic delivery and installation
- Free annual inspectionFor customers under maintenance contract
- Seasonal adjustmentsOptimization of settings according to conditions
- Priority emergency serviceRapid response to critical problems
Warranty on air exchanger cleaning
90-day performance guarantee
If your exchanger doesn't perform any better than before the cleaning, we'll come back free of charge to identify and correct the problem.
1-year warranty on cleaned parts
If a component we've cleaned breaks during the year due to a cleaning defect, we replace it free of charge.
Customer satisfaction 100%
Mohamed and Omar make a personal commitment to every exchanger cleaning. Not satisfied? We'll do it again, free of charge.
Savings with regular cleaning
Lower energy costs
A clean heat exchanger can reduce your energy bill by 15-25% per year. On a bill of 2400$/year, this represents savings of 360-600$.
Extended service life
Preventive cleaning can double the life of your exchanger. Avoid replacement of 3000-5000$ for an additional 5-8 years.
Avoid emergency repairs
Breakdowns that always happen at the worst possible time cost 2-3 times more than preventive maintenance.
Bring your air exchanger back to life today
Your system deserves a professional cleaning to keep it running like new. Our specialized technicians are familiar with all models and know how to optimize them.
Free inspection and quotation
Call now: 514-214-7492 Online: https://vortexair.ca E-mail: info@vortexair.ca
📍 9187 Acadie Boulevard, Montreal, QC H4N 3K1
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• State-of-the-art equipment
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7-day/week service - Over 500 satisfied customers - 90-day satisfaction guarantee
Frequently Asked Questions About Air Exchanger Cleaning
How can I tell if my air handler really needs to be cleaned, and not just a filter change?
Honestly, when a customer asks me this question, the issue has often already gone beyond just a filter. A dirty filter reduces the flow rate a little. A dirty heat exchanger, on the other hand, completely changes the system’s performance.
If your HVAC system is noisier than before, if certain rooms aren’t getting proper ventilation, or if odors keep coming back even with new filters, we’ve seen this happen dozens of times: the coil is clogged. The filter provides protection, but it doesn’t prevent all fine dust, grease, or moisture from getting in over time.
Does it happen often that people wait too long to clean their heat exchangers?
Yes, far too often. The classic scenario: ‘It was still working, so we waited.’
When you open up the unit, the fan is almost completely clogged, the fans are working overtime, and at that point, it’s no longer just a matter of cleaning: we’re talking about worn-out motors, dry bearings, and sometimes even corrosion.
Cleaning at the right time is inexpensive. Waiting too long often leads to repairs or replacements.
Is it true that a dirty air exchanger can increase my electricity bill?
At 100 %. We measured it in the field.
A clogged air handler requires more power to move the same volume of air. The motors run longer and at higher speeds. For some customers, we’ve seen a clear reduction in energy consumption after cleaning, especially in the winter when the system runs nonstop.
It's not magic—it's just the mechanics working properly.
Why do bad odors sometimes come out of the air vents?
That's a big red flag.
Odors rarely come from the ducts themselves. Most of the time, they come from the core or damp internal sections where bacteria or mold have taken hold.
We've seen heat exchangers where moisture has been trapped for years. As long as they aren't properly disassembled, cleaned, and disinfected, the odor will always come back, no matter what kind of filters you use.
Can I safely clean my heat exchanger myself?
I'll be honest: you can do basic maintenance, but not a thorough cleaning.
Change or wash the filters—yes. Give the area around them a quick vacuum—correct.
But removing the core, using the right products for the material, cleaning the fans without throwing the blades out of balance… that’s where mistakes happen. We’ve seen paper cores ruined by water and motors damaged by products that were too harsh.
Poor cleaning costs more than a good professional service.
How long does a thorough cleaning done the right way take?
For residential units, a thorough cleaning usually takes between 2 and 4 hours, depending on the model and condition.
When someone tells you they can clean a heat exchanger in 30 minutes, that's not a proper cleaning—it's just a quick wipe-down.
When we're done, we take the system apart, clean it, dry it, put it back together, and test it. You can immediately tell the difference in flow and noise.
Are all heat exchangers cleaned the same way?
Not at all.
A residential Broan or Venmar unit isn't treated the same way as a high-performance Zehnder or a commercial Carrier VRE. The materials, cores, and tolerances are different.
This is a common mistake: applying the same method to everything. A good technician tailors the cleaning process to the specific model; otherwise, you’ll shorten the device’s lifespan instead of extending it.
How often do you actually recommend having your home cleaned in Quebec?
In real life, not in textbooks:
- Standard home: every 2–3 years
- With pets, smokers, or near a construction site: at 12–18 months
- After renovations: immediately
Quebec's climate is tough on radiators. Between the freezing temperatures, salt, pollen, and humidity, they get clogged up faster here than anywhere else.
What mistakes do you see most often among homeowners?
The worst mistake: waiting for it to break.
The second one: thinking that changing the filter solves everything.
The third option: have only the ducts cleaned without touching the heat exchanger. We see this a lot. The result: the system quickly becomes contaminated again, and the customer thinks, ‘Nothing has changed.’.
Can cleaning really extend the life of the heat exchanger?
Absolutely. We have customers with units that are over 15 years old and still work very well because they've been maintained.
Conversely, we have seen heat exchangers that were 7–8 years old fail because they had never been cleaned.
Regular cleaning makes the difference between having to replace something after 10 years or after 20 years.
Is it worth it financially, or is it just a matter of convenience?
Both.
Between energy savings, avoided repairs, and improved comfort, cleaning often pays for itself.
But most importantly, it prevents emergency breakdowns in the middle of January. And we all know that those are expensive… and that they always happen at the worst possible time.
How should I feel after a good cleanse?
That's a good question, because that's how you know if the job was done right.
You should notice:
- Less noise
- A more consistent airflow
- Fewer odors
- A more comfortable home, especially in the winter
If nothing changes, it means there's an unresolved issue, and a true professional will come back to check on it—not just disappear.
