HRV Not Working? No Airflow?
Quick troubleshooting steps you can try before calling. If problem persists, we're here to help 24/7.
Call 778-909-5731 NowTry These Steps First
These simple checks solve most HRV problems. If they don't work, call us immediately.
What to check:
- Look for power light on HRV unit
- Check circuit breaker - make sure it's ON
- Try flipping breaker OFF then ON again
- Check wall switch near HRV if you have one
If breaker keeps tripping: This indicates electrical problem. Don't keep resetting it. Call us immediately.
How to check filters:
- Turn off HRV power at breaker
- Open access panel on front of unit
- Remove all filters (usually 2-4 filters)
- Hold each filter up to light - can you see through it?
- If not, filters are clogged and need cleaning or replacement
Clogged filters are the #1 cause of HRV problems
Clean filters with vacuum or wash with mild soap. Let dry completely before reinstalling. If disposable, replace with new filters.
What to look for outside:
- Find intake and exhaust vents on exterior wall (usually two side-by-side)
- Clear any snow, ice, leaves, or debris blocking vents
- Check bird guards aren't clogged
- Make sure landscaping isn't blocking vents
Winter warning: Snow buildup is common in Vancouver. Check vents after heavy snowfall to prevent system failure.
Settings to verify:
- Check wall control or thermostat is set to ON or AUTO
- Verify fan speed isn't set to minimum or OFF
- Try increasing fan speed to see if you hear anything
- Check timer settings if you have timer control
Still Not Working?
If you've tried all these steps and your HRV still isn't working, it's time to call the professionals.
Call 778-909-5731 for Emergency ServiceCommon HRV Problems That Need Professional Help
Common in Vancouver winters. Ice buildup inside unit blocks airflow.
Causes:
- • Imbalanced airflow
- • Defrost system failure
- • Incorrect outdoor temperature settings
- • Blocked condensate drain
Needs professional diagnosis and repair
HRV has power but fans won't spin or make humming noise.
Signs:
- • Humming but no airflow
- • Grinding or squealing noises
- • Intermittent operation
- • Complete silence when should be running
Motor replacement required
Electronic control board damaged by power surge or age.
Symptoms:
- • No lights or display
- • Error codes
- • Erratic operation
- • Controls don't respond
Control board diagnosis and replacement
HRV runs but air isn't reaching rooms properly.
Common issues:
- • Disconnected or crushed ducts
- • Closed or stuck dampers
- • Improperly sized ductwork
- • Airflow imbalance
Requires ductwork inspection and repair
When to STOP and Call Immediately
Don't continue troubleshooting if you experience these issues:
Burning smell or smoke from unit
Loud grinding or metal-on-metal sounds
Water leaking from unit or ceiling below
Electrical sparking or circuit breaker keeps tripping
Visible ice or frost buildup inside unit
HRV Not Working FAQs
Most commonly caused by clogged filters restricting airflow. Other causes include frozen heat exchanger core, failed fans, blocked ducts, or closed dampers. Check filters first, then call us if problem persists.
Short term (1-2 days) is usually okay, but not recommended long-term. Without HRV ventilation, humidity rises, air quality degrades, and mold risk increases. Get it repaired as soon as possible.
Frozen cores are common in Vancouver winters when outdoor temps drop below -5°C. Usually caused by airflow imbalance, defrost system failure, or incorrect settings. Needs professional diagnosis and repair.
Your home is physically safe, but indoor air quality will degrade without ventilation. High humidity can lead to mold growth. Some homes are airtight enough to cause dangerous CO2 buildup. Get it fixed quickly.
Can't Fix It Yourself? We're Here to Help
Same-day emergency service available in Greater Vancouver. Expert diagnosis and repair.