Difference Between HRV and ERV
HRV is Heat Recovery Ventilator and ERV is Energy Recovery Ventilator. Both the HRV and the ERV are energy revival system. Both these contain almost the same components such as heat exchangers, fans and also controls.
One of the main differences between Heat Recovery Ventilator and Energy Recovery Ventilator is in working of the heat exchangers. In ERV, the heat exchanger transmits some amount of water vapour along with the heat energy whereas only heat is transferred in Heat Recovery Ventilator.
Unlike the Heat Energy Recovery Ventilator, the Heat Recovery Ventilator is considered to be cost effective as they reclaim energy from the exhaust air slow. The HRVs recapture about 60 to 80 per cent of the temperature that would have been lost otherwise.
Energy Recovery Ventilator can also be called as a system that transfers moisture between two air streams. Energy Recovery Ventilators help in maintaining constant humidity during the winter season.
One can also come across difference in the equipment between Heat Recovery Ventilator and Energy Recovery Ventilator. In Heat Recovery Ventilator, there are two fans that helps in the balanced flow of incoming and outgoing air. They also consist of fixed filters through which the air flows. Â Some of the Heat Recovery Ventilator comes with HEPA technology that captures the pollutants. The Energy Recovery Ventilator also has the same components but with the exception of an additional chamber for managing humidity levels.
Summary
- HRV is Heat Recovery Ventilator and ERV is Energy Recovery Ventilator.
- One of the main differences between Heat Recovery Ventilator and Energy Recovery Ventilator is in working of the heat exchangers.
- In ERV, the heat exchanger transmits some amount of water vapour along with the heat energy whereas only heat is transferred in Heat Recovery Ventilator.
- The Heat Recovery Ventilator are considered to be cost effective as they reclaim energy from the exhaust air slow.
- Energy Recovery Ventilator can also be called as a system that transfers moisture between two air streams. Energy Recovery Ventilators help in maintaining constant humidity during the winter season.
- In Heat Recovery Ventilator, there are two fans that helps in the balanced flow of incoming and outgoing air. They also consist of fixed filters through which the air flows. Â The Energy Recovery Ventilator also has the same components but with the exception of an additional chamber for managing humidity levels.
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ERV Filtration System
An energy-recovery ventilator (ERV) operates essentially the same as an HRV while also dealing with the home’s humidity. It will take some of the moisture from the more humid air stream and transfer it to the dryer air stream, which in most cases does not cause cross-contamination of air streams.
HRV Filtration System
A heat-recovery ventilator (HRV) exhausts stale air from the home while at the same time pulling in fresh air. Stale air is generally removed from rooms with the most moisture—bathrooms and laundry rooms—while fresh air is pumped into the most-used rooms, like the living room and bedrooms. Since both these air streams pass through the same ventilator, heat from whichever stream is warmer (fresh air in summer, stale air in winter) is “recovered” and transferred to the other airstream without the two airflows mixing.