SIMPLE GUIDELINES. The ERV maintains fresh air in the home by bringing fresh air inside and exhausting stale air outside. ... To maintain air quality set the ERV controls to the intermittent on off cycle. This continuous intermittent setting should be maintained all year round.

How often should I run my ERV?

A typical ERV, though, can move 100 to 200 cubic feet per minute (cfm) of air. A typical house needs maybe 50 cfm (depending on which ventilation standard you go by). What many designers do is set the ERV to run intermittently, say 20 minutes out of each hour, to meet the ventilation needs of the house.

Should ERV run in summer?

In summer, the heat and humidity are outside and your ERV will keep most of it from getting inside with your ventilation air. ... However, if you have air conditioning and the indoor air is cooler and dryer than the outside air, it is generally a good idea to run your ERV intermittently throughout the day.