Flat 3 m³/h · office 4 · cafe 5 — per m²
Ventilation Calculator 2026 — Capacity and Cost
Enter the area, ceiling height, people and object type — we compute the required capacity in m³/h, ducts, diffusers and the full budget.
Calculate
- Required capacity
- 180 m³/h
- Duct length
- 24 m
- Diffusers / grilles
- 2
- Minimum budget
- ₾4,857
- Comfortable budget
- ₾8,127
| Unit (fan / recuperator) | ₾2,600 – ₾4,200 |
|---|---|
| Ducts and fittings | ₾672 – ₾1,080 |
| Diffusers and grilles | ₾76 – ₾140 |
| Filters, automation, dampers | ₾250 – ₾600 |
| Installation and balancing | ₾1,259 – ₾2,107 |
2026 market guide · installed prices · central systems for objects above 500 m² are engineered individually · the market spreads about ±15%
Components 2026
Mid-market Tbilisi prices the calculator uses. Recuperator class follows capacity.
| Component | Min | Max |
|---|---|---|
| Apartment · exhaust only | ₾300 | ₾650 |
| Supply + exhaust with recuperation < 250 m³/h | ₾2,600 | ₾4,200 |
| Supply + exhaust with recuperation < 500 m³/h | ₾4,200 | ₾7,000 |
| Ducts and fittings, ₾/m | ₾28 | ₾45 |
| Diffusers and grilles | ₾38 | ₾70 |
Frequently asked questions
How much air does a flat need?
The norm takes the larger of two: 3 m³/h of fresh air per m², or 30 m³/h per person. A 60 m² flat for three — 180 m³/h. The kitchen extractor hood adds separately.
Is a recuperator worth it?
A recuperator returns 70–90% of the exhaust heat to the supply air. In winter it cuts heating costs by 20–30% and removes humidity without open windows. Pricier than the alternatives, but the only full fresh-air option.
Which ducts should I pick?
Round spiral (spiro) ducts are the flat and office standard — cheap and airtight. Rectangular ducts fit behind suspended ceilings and in cafes. Noisy zones need a silencer.
How long does installation take?
A recuperation system in a 60–120 m² flat — 3–5 working days including suspended-ceiling removal and restore. A 200 m² office — 7–12 days. Design and balancing are mandatory steps.