Airobot V4 ERV heat recovery ventilation unit

V4 ERV description

Airobot V4 ERV is a heat-recovery ventilation unit (HRV) that continuously supplies fresh air throughout the building while recovering heat from the exhaust air. Airobot is a Estonian manufacturer known for local manufacturing and a moisture-recovering enthalpy exchanger. The V4 ERV model is designed specifically for apartments and smaller private houses, where both energy savings and quiet operation matter.

How Airobot V4 ERV works

The unit draws fresh air from outside while simultaneously extracting stale air from the rooms. An enthalpy (ERV) heat exchanger transfers heat from the exhaust air to the incoming fresh air without the two streams mixing. The result is fresh, filtered supply air that in winter arrives at almost room temperature. This significantly reduces heating costs — often 30–50% compared to natural ventilation.

Energy efficiency and indoor climate

Airobot V4 ERV suits objects of up to 130 m² and is designed to deliver the highest possible heat recovery. Supply air is filtered — typically with an F7 or better filter — which stops pollen, dust and fine particles (PM2.5). It is especially valued by allergy sufferers and families with young children. Filtered air keeps indoor CO₂ levels low, reduces moisture in bathrooms and kitchens, and prevents mould.

Control and automation

This means the unit runs only as much as needed — saving electricity and extending filter life.

Why choose Airobot V4 ERV

Airobot is well known on the Estonian market for quality, durability and long-term spare-parts availability. V4 ERV is a popular choice thanks to its strong price-to-performance ratio and easy maintenance. We sell the unit together with professional installation across Estonia, including design, ductwork, commissioning, balancing and ongoing service and filter changes.

V4 ERV technical specifications

Who is Airobot V4 ERV for?

Well suited for properties with up to 130 m² of living space.

• 3–4-room apartment
• Private house up to 130 m²
• Terraced-house section
• Renovation project

Frequently asked questions