Impianto VMC doppio flusso nelle ville NZEB di Numana

Installing a double-flow VMC in the NZEB villas of Costa Conero recovers up to 90 % of the heat from exhaust air, cutting ventilation‑related heating losses by about 70 %. This keeps indoor temperature stable while delivering fresh, filtered air, which lowers the overall energy demand of the building and helps meet the NZEB primary‑energy limit. The system also reduces humidity buildup, protecting the envelope and improving long‑term durability. In practice, residents notice fewer drafts and a more uniform comfort level throughout the year.

To request authorization for a double‑flow VMC in the Conero Luxury Residences, submit a complete technical dossier to the Municipality of Numana’s Urban Planning Office. The dossier must include the system’s layout, heat‑recovery efficiency, duct sizing, and a declaration of conformity to UNI 10339. After verification, the office issues a building permit; the typical review period is 30 days. No additional public consultation is required for interior mechanical installations that do not alter the façade.

For a double‑flow VMC to contribute to NZEB certification in the coastal zone of Costa Conero, the unit must achieve a minimum heat‑recovery efficiency of 80 % at the design airflow rate. The airflow should be at least 0.35 m³/h per m² of conditioned floor area, ensuring adequate fresh‑air supply without excessive fan power. Additionally, the system must include ISO ePM1 ≥ 50 % filters and be controllable via a demand‑controlled ventilation strategy that limits fan speed when occupancy is low.

In the seaside villas of Costa Conero, a double‑flow VMC supplies continuous filtered air while exhausting stale air, keeping indoor CO₂ concentrations typically below 800 ppm and reducing particulate matter (PM2.5) by up to 60 %. The heat‑exchange core maintains indoor temperature within ±1 °C of the set point, preventing drafts and the feeling of cold spots near windows. Humidity is regulated between 40 % and 60 %, which limits mold growth and improves perceived comfort for occupants.

For a luxury villa of about 200 m² in Numana, the supply and installation of a double‑flow VMC with 90 % heat recovery costs roughly €9,500 – €11,500, including ducts, grilles, and commissioning. Annual maintenance, consisting of filter replacement (twice per year) and fan inspection, averages €130 – €180. These figures are based on standard market quotes for residential units in the Costa Conero area.

Yes, there are incentives for high‑efficiency VMC in NZEB homes of the Riviera del Conero. The national Ecobonus allows a 65 % tax deduction on eligible expenses, capped at €60,000 per property. Additionally, the Marche Region offers a grant of up to €3,000 for mechanical ventilation systems that achieve ≥80 % heat recovery, provided the project includes an energy‑performance certification. Both incentives can be combined, subject to the usual documentation and submission deadlines.