What typically needs to be done
- HRV/ERV service normally includes turning the unit off as directed, cleaning/replacing user-serviceable filters and inspecting the heat/energy-exchange core if the manual calls for homeowner cleaning.
- Indoor grilles and outdoor intake/exhaust hoods are checked for blockage, and condensate drains are checked on units that use them.
- The unit is reassembled carefully so filters/core seals seat correctly and airflow is not bypassing them.
What you can check or prepare yourself
- Take a photo before removing filters/core so airflow direction and orientation are easy to restore.
- Vacuum dust from accessible grilles and clear leaves/insects from outside hoods without pushing debris deeper into the duct.
- If the unit ices repeatedly, leaks, has a failed fan or shows electrical faults, stop at user-service items and call an HVAC/ventilation professional.
Step-by-step reminder
- Follow the HRV/ERV manufacturer's instructions to access and clean or replace user-serviceable filters.
- Check accessible indoor grilles and outdoor intake/exhaust hoods for obvious blockage.
- Inspect the condensate drain if the unit has one and it is user-serviceable.
- Record the service date and adjust the interval if the manufacturer or local conditions call for more frequent attention.
Turn equipment off as instructed before opening user-service panels. Leave electrical, refrigerant or inaccessible duct work to a qualified professional.
Before you start
Review the manual for the exact appliance, system or material in your home before opening panels, disconnecting utilities, changing settings or using chemicals. Model-specific procedures and local installation details can differ from a general guide. Shut off power, water or fuel only when the manufacturer procedure calls for it and you are comfortable identifying the correct control. Stop if the condition you find is different from what is described here.
When to bring in a professional
The homeowner checks above can help you understand the condition of the system and prepare for service, but the higher-risk portion may require specialized tools, safe access, combustion/electrical knowledge, refrigerant work, pressure equipment or a qualified inspection. Use the typical-work list to understand what a proper service visit should cover, and hire the appropriate professional for work outside normal homeowner access.
This guide is general information, not a home inspection or a guarantee that a procedure is suitable for your specific equipment or conditions. Follow manufacturer instructions and applicable codes, stop if anything appears unsafe or different from the guide, and use a qualified professional when appropriate. Read the site terms and limitations.