Ventilators often give warning signs before they fail completely. If you notice any of the following, don't wait — call us for a same-day diagnostic.

• The unit is completely silent. If your ventilator has stopped running entirely, it could indicate a failed motor, a tripped circuit, a seized fan, or a faulty control board.
• Unusual noises — rattling, banging, or grinding. These often point to a loose or damaged fan blade, a failing motor bearing, or debris lodged in the unit.
• Reduced or no airflow. If rooms feel stuffy despite the unit running, the filters may be clogged, the heat-exchange core may be blocked, or the ductwork may have a restriction or disconnection.
• Condensation returning on windows. If you solved a humidity problem with your HRV and the condensation is back, the unit may have stopped exhausting moist air effectively.
• Ice build-up on the unit or exterior duct. Frost accumulation in winter that doesn't clear indicates a malfunctioning defrost system — common on older units or those without proper maintenance.
• Error codes or indicator lights. Many modern HRV and ERV units display fault codes on their wall controls. Our technicians know how to read and respond to codes across all major brands.
• Musty or stale smell coming from vents. This may indicate a dirty or contaminated heat-exchange core, mould growth inside the unit, or a drainage issue causing standing water.
• Higher energy bills without explanation. A ventilator that's working harder than it should — due to clogged filters or a failing motor — can spike electricity consumption noticeably.

Our technicians are trained to diagnose and repair the full range of ventilator issues. Here are the most common repairs we perform across Ontario:

We keep things simple and transparent from the moment you call to the moment we leave. Here's exactly what happens when you contact us for a ventilator repair:

1. You call us — any time, day or night. Our dispatch team answers 24/7 and will ask a few quick questions to understand the issue and get the right technician on their way.
2. Fast arrival. We prioritize urgent calls and aim to have a certified technician at your door as quickly as possible — same day in most cases across our service area.
3. Full diagnostic. Our technician inspects the unit top to bottom — motor, filters, heat-exchange core, defrost system, controls, ductwork connections, and exterior hoods — to identify the root cause, not just the symptom.
4. Clear upfront quote. Before any work begins, we give you a firm price for the repair. No surprise charges, no hidden fees.
5. Repair completed. We carry a wide range of replacement parts on our service vehicles, allowing us to complete the majority of repairs during the initial visit.
6. Airflow verification. After the repair, we test the unit to confirm it's operating correctly, airflow is balanced, and all functions are working as designed.
7. Maintenance guidance. We leave you with filter cleaning instructions and simple maintenance tips tailored to your specific unit, so you can prevent the same issue from happening again.

Our technicians are trained to diagnose and repair ventilators from all major manufacturers sold in Canada. You don't need to have purchased your unit from us — we'll service it regardless of brand or where it was installed.

• Lennox Healthy Climate HRV & ERV
• Venmar / Broan
• Lifebreath
• Fantech
• Aldes
• Carrier / Bryant
• Honeywell / Resideo
• desiccant and membrane-based ERV units from all major manufacturers

Don't see your brand listed? Call us anyway. If it's an HRV or ERV installed in an Ontario home, there's a very good chance our technicians have serviced it before.

This is one of the most common questions homeowners ask when their HRV or ERV breaks down — and the honest answer depends on a few key factors. Our technicians will always give you an unbiased recommendation based on what's actually best for your situation, not what generates the most revenue for us.

If replacement is the right call, we can quote you on a new unit on the same visit. You won't need to schedule a separate appointment or wait for a second technician to come out.

Constant Home Comfort provides 24/7 HRV and ERV repair service across Ontario. Our technicians are dispatched from multiple locations to ensure fast response times wherever you are:

Don't see your city? Call us — our service area extends across all of Ontario.

• Truly 24/7 — no answering machines, no call centres. When you call at 2 AM, a real person picks up and dispatches help.
• All brands, all models. We service every HRV and ERV brand sold in Canada — not just the ones we install.
• Certified and licensed technicians. Every technician is TSSA registered, fully insured, and trained on modern HRV and ERV systems.
• Upfront pricing — always. You'll know the exact cost before we touch anything. No hidden trip fees, no vague estimates.
• Most repairs completed on the first visit. Our trucks are stocked with the most common HRV and ERV parts so we can fix the problem while we're there.
• No upselling pressure. If a repair is the right answer, we'll repair it. If replacement genuinely makes more sense, we'll explain why — and let you decide.
• Trusted across Ontario. Hundreds of five-star reviews from homeowners across the GTA and beyond — our reputation is built on honest work done right the first time.

Most ventilator failures are preventable. Clogged filters, a dirty heat-exchange core, and undetected airflow imbalances are the top causes of HRV and ERV breakdowns — and all of them are caught and corrected during a routine annual inspection.

Constant Home Comfort offers annual maintenance plans that keep your ventilator running at peak efficiency year-round. A plan includes:

• Annual full-system inspection and cleaning by a certified technician
• Filter inspection and cleaning (washable types) or replacement
• Heat-exchange core inspection and cleaning
• Airflow balancing check — intake and exhaust verified to be equal
• Exterior hood inspection — cleared of debris, ice, or blockages
• Defrost system function test
• Wall control and sensor verification
• Priority response if a repair call is ever needed

Plan members also receive discounted rates on any repairs and parts needed outside of their annual visit. Ask us about bundling your ventilator maintenance with your furnace, AC, or water heater service for additional savings.

How much does HRV or ERV repair typically cost in Ontario?

Repair costs vary depending on the problem and the parts required. Minor repairs such as filter replacement, core cleaning, or a control board reset can be completed at low cost. Motor replacements or heat-exchange core replacements are more involved. We provide a firm, itemized quote before starting any work — so there are no surprises.

My HRV is running but I'm not sure it's working properly — can you check it?

Absolutely. Many ventilator problems — especially airflow imbalances, partial core blockages, and early motor wear — aren't obvious until they're measured. Our technicians use airflow measurement tools to verify your unit is performing to spec, even if it appears to be running normally.

How quickly can you get to me for an emergency repair?

Response times depend on your location and the time of call, but we prioritize ventilator calls and aim for same-day service across our main service areas. During your call, our dispatch team will give you a realistic arrival estimate based on current technician availability in your area.

My HRV is making a loud noise — is it safe to keep running?

It's generally best to turn the unit off and call us. Unusual noises — especially rattling, grinding, or banging — often indicate a mechanical problem that can worsen quickly if the unit keeps running. A damaged fan blade or failing motor bearing can cause further damage to the unit if left running. Turn the unit off at the wall control and give us a call.

Can I do anything while waiting for the technician?

Yes — if the unit is making noise or has stopped working, turn it off at the wall control or circuit breaker to prevent further damage. Check whether the filters are accessible and visible — a heavily clogged filter is sometimes all that's needed and can be rinsed under water while you wait. Don't attempt to open the unit itself or disconnect any ductwork.

Do you carry parts for older HRV and ERV models?

We stock the most common parts for all major brands and keep regularly updated inventory to cover units going back 10–15 years. For older or discontinued models, some parts may need to be ordered — in which case we'll tell you upfront and give you a realistic timeline. If a part is no longer available, we'll advise on whether a compatible replacement component or a full unit replacement is the better path.

Don't let a ventilator problem linger. Every hour your HRV or ERV is down, your indoor air quality is declining. Whether it's the middle of the night, a holiday weekend, or the coldest day of a Canadian winter, Constant Home Comfort is ready to respond.

Call 1 (888) 675-5907 or submit a service request online. We serve homeowners across the GTA, Hamilton, Ottawa, London, Waterloo, Windsor, and all of Ontario.

Call 1 (888) 675-5907 | 24/7 Emergency Ventilator Repair | All Brands Serviced