An energy recovery ventilator is a mechanical ventilation system that exchanges stale indoor air with fresh outdoor air while transferring heat and moisture between the two air streams. This process improves indoor air quality while reducing the energy impact on the HVAC system.

An ERV system recovers energy that would otherwise be lost during ventilation. By preconditioning incoming air, it reduces the heating and cooling load placed on rooftop units, air handlers, and chillers—lowering overall energy consumption.

The main difference is moisture transfer.

An ERV transfers both heat and moisture, while an HRV transfers heat only. ERVs are typically better suited for climates like Ohio where humidity control is important year-round.

Energy recovery ventilation is recommended when a building:

• Requires continuous or high volumes of outdoor air

• Experiences humidity control issues

• Has rising energy costs tied to ventilation

• Needs to meet updated ventilation or indoor air quality codes

ERV systems are commonly used in offices, healthcare facilities, fitness centers, warehouses, schools, retail spaces, and mixed-use buildings—especially where occupant density and fresh air requirements are high.

Yes. Many energy recovery ventilators are installed as retrofits. ETS evaluates existing ductwork, airflow capacity, and controls to ensure the ERV integrates properly without disrupting system performance.

Yes. Unlike basic ventilation systems, ERVs transfer latent energy (moisture), helping stabilize indoor humidity levels during both humid summers and dry winter conditions.

Energy recovery ventilation improves IAQ by:

• Continuously diluting contaminants

• Reducing CO₂ buildup

• Controlling moisture that can contribute to mold growth

• Supporting consistent airflow across occupied spaces

In many commercial applications, energy recovery ventilation is required or strongly encouraged by energy and mechanical codes when outdoor air volumes exceed certain thresholds. Requirements vary by building type and jurisdiction.

Routine maintenance is essential to keep ERVs operating efficiently.

Typical service includes:

• Filter replacement

• Heat exchange core inspection and cleaning

• Fan and motor checks

• Controls and damper verification

An improperly designed ERV system can cause airflow imbalance, pressure issues, humidity problems, and increased energy use. Proper engineering and commissioning are critical to achieving the intended benefits.

Engineered Temperature Solutions designs ERV systems as part of the entire commercial HVAC system, not as standalone equipment. ETS evaluates airflow demand, climate conditions, controls integration, and long-term serviceability to ensure reliable performance.

Yes. Modern ERV systems can integrate with BAS platforms to support scheduling, demand-controlled ventilation, CO₂ monitoring, and performance optimization.

Professional commissioning ensures:

• Proper airflow balance

• Correct temperature and moisture recovery

• Accurate controls sequencing

• Reduced energy waste

• Long-term system reliability

Yes. Engineered Temperature Solutions provides ERV design, installation, commissioning, and ongoing service for commercial buildings across Columbus and Central Ohio, supporting long-term indoor air quality and energy efficiency.