HRV core missing or dirty

Insulation · Ventilation Systems · printed page 256 (PDF page 257)

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Core Missing or Dirty on HRV Core Missing or Dirty HRV – Core Missing or Dirty

Text in the illustration

outside
inside
duct
heat recovery ventilator
warm moist exhaust air from house
HRV core missing
blowers
condensate drain
if the heat exchanger core is missing or clogged with dirt, the HRV will not work properly
the small air channels in the core make it prone to clogging
heat exchanger core
detail

Generated explanation

The illustration shows a heat recovery ventilator connected by two ducts to exterior wall terminations, with two blowers and a condensate drain. A dashed diamond inside the cabinet marks the missing HRV core, and an arrow identifies warm, moist exhaust air entering from the house. An enlarged detail shows the heat exchanger core's closely spaced air channels and colored arrows representing separate airflow paths. Annotations explain that the small channels are prone to clogging and that a missing or dirt-clogged core prevents the HRV from working properly.

Components

heat recovery ventilator heat exchanger core blowers ducts exterior wall vent hoods condensate drain exterior wall

Defects shown

Missing heat exchanger core Heat exchanger core clogged with dirt Restricted core air channels Improper HRV operation due to a missing or dirty core

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