Description
✅ Authorised Voltas Partner — 100% Genuine · Mahajan Electronics Since 1981
90L tank · Honeycomb pads · 185W · 48.5 m² / 15m throw · 3-speed mechanical · Inverter compatible · Oscillating louvers · Castor wheels · Water level indicator · 60×119.5×45cm · 19kg · Epicool 90.
90L tank. 185W. 48.5 m².
Honeycomb pads. 15m air throw. 3-speed mechanical.
Inverter compatible. Castor wheels. Voltas reliability.
The Voltas Epicool 90 is a 90-litre desert air cooler designed for large Indian rooms, halls, shops, and semi-outdoor spaces. Honeycomb cooling pads for efficient water retention and evaporative cooling; 185W for low running cost; 15-metre air throw for large-room reach; 48.5 m² (≈500 sq ft) coverage; inverter-compatible for continuous operation during power cuts; oscillating louvers; castor wheels; water level indicator. Best performance in dry conditions with adequate ventilation — open a window or door for effective air circulation.
Delhi NCR Monsoon (July–September) — reduced effectiveness in high humidity
Desert coolers work by evaporating water from honeycomb pads into the air — this evaporation absorbs heat, cooling the air. In high humidity (Delhi monsoon: 70–95% RH), the air is already close to saturation — less evaporation occurs, and the cooling effect drops significantly. Cooler effectiveness returns when the monsoon ends and dry conditions resume (October onwards). If you need year-round comfort, consider whether a cooler alone meets your needs or whether supplementary cooling is required during July–September.
💨 Desert Cooler vs Split AC — what each does and when each is the right choice
💨 Voltas Epicool 90 — Desert Cooler
- ✔ 185W — ~₹1.85/hour electricity cost
- ✔ No installation — plug and use, portable
- ✔ Inverter compatible — works during power cuts
- ✔ Large 90L tank — hours of unrefilled operation
- ✔ Fresh air — draws in outside air, not recirculated
- ✗ Cannot reduce temperature below wet-bulb (~24–28°C in Delhi summers)
- ✗ Requires open window/door for ventilation
- ✗ Effectiveness drops significantly in July–September monsoon (70–95% humidity)
- Best for: April–June dry heat · large ventilated spaces · budget-first · power-cut areas
❄️ Split AC (alternative)
- ✔ Reduces temperature below ambient — can achieve 18–24°C in any weather
- ✔ Works in high humidity — independent of outdoor air conditions
- ✔ Dehumidifies — removes moisture from air
- ✗ 1000–2000W — ₹10–20/hour electricity cost (5–10× more than cooler)
- ✗ Requires professional installation
- ✗ Does not work during power cuts without inverter AC + backup
- ✗ Recirculates indoor air — less fresh air input
- Best for: all-season comfort · monsoon months · sealed rooms
🔬 How evaporative cooling works — the physics in four steps
Fan Draws Hot Dry Air
Fan pulls warm outside air through the rear/sides of the cooler into the honeycomb pad chamber
Water Pump Wets Pads
Pump circulates tank water to wet the honeycomb pads — water distributes evenly across pad surface
Evaporation Absorbs Heat
Hot dry air passes through wet pads — water evaporates, absorbing 2,260 kJ/kg latent heat from the air, cooling it 8–15°C
Cool Air Delivered
Fan blows cooled, slightly humidified air into the room — louvers oscillate to distribute across 48.5 m²
🌬️ Ventilation guide — open window/door is essential for effective cooling
Open 1 Window / Door
Allows cooled air to push hot air out — creates airflow circuit. Best: opposite side of room from cooler
Cross-Ventilation
Window/door on opposite wall — hot air exits, cool air fills room. Maximum cooling efficiency
Fully Sealed Room
Air cannot circulate — humidity builds up rapidly, evaporation stops, cooler loses effectiveness within 20–30 min
Semi-Outdoor / Open Areas
Shops, showrooms, halls with natural openings — desert coolers excel in semi-open commercial spaces
Honeycomb cooling pads vs wood wool pads — why honeycomb is the better evaporative media
The cooling pad is the core functional element of an evaporative air cooler — it is the surface over which water is distributed and through which air passes to achieve evaporative cooling. Two main pad technologies are used in Indian air coolers: wood wool (aspen/celdek) pads and honeycomb (cellulose/synthetic) pads. Wood wool pads use randomly arranged wood fibres — they provide a large surface area for water contact with air, but the random fibre arrangement creates uneven water distribution (some zones dry out while others flood), partial channelling of air through the pad without full water contact, shorter service life as wood fibres degrade and break down under continuous wet-dry cycling, and potential for odour development as wood organic material supports bacterial growth. Honeycomb pads use a structured hexagonal (honeycomb) geometry — the regular hexagonal cell pattern creates a controlled, uniform surface area for water distribution across the full pad face, with water wicking evenly through the cellulose or synthetic substrate by capillary action across the entire pad cross-section. The geometric uniformity ensures that all air passing through the pad contacts wet surface area rather than channelling through dry zones. The higher surface area-to-volume ratio of the honeycomb structure (relative to random fibre arrangement) increases the contact area between water film and air per unit of pad thickness, improving evaporation rate. Honeycomb pads are also more resistant to degradation than wood wool — high-quality cellulose honeycomb pads last 3–5 years under normal use vs 1–2 seasons for wood wool pads, and they resist the biological growth and odour that affects organic wood fibre pads. The practical benefit: the Epicool 90's honeycomb pads deliver more consistent cooling output throughout the pad's service life, with less degradation in performance between pad replacements compared to wood wool alternatives.
90L tank — runtime, refill frequency, and sizing for large spaces
The water tank capacity directly determines how long the cooler can operate between refills — a critical consideration for commercial spaces and large households where constant attention to refilling is impractical. Evaporative coolers consume water at rates that depend on ambient temperature, humidity, and fan speed. At Delhi NCR's peak summer conditions (42°C ambient, 25–35% RH) on High speed, a desert cooler of the Epicool 90's capacity typically evaporates 3–6 litres of water per hour. At 4 litres/hour average consumption, the 90L tank provides approximately 22–25 hours of continuous operation before requiring a refill — covering a full day's use in a shop or office from morning to evening without attention. At lower speeds and milder conditions (35°C, 40% RH), consumption may drop to 2–3 litres/hour, extending runtime to 30–45 hours per fill. This contrasts with smaller 50–60L coolers that require refilling every 10–15 hours under the same conditions — the 90L capacity is specifically relevant for commercial use (shops, showrooms, restaurants) where interrupting operation to refill is disruptive. The 15-metre air throw — achieved through the combination of the high-capacity fan motor and the forward-channelled outlet geometry — is the key specification for large-room coverage: at 15 metres throw, the cooled airstream reaches the far end of a 12×4 metre (48 m²) room without losing sufficient velocity to provide perceived cooling to occupants at that distance. For rooms deeper than 15 metres, or L-shaped rooms where direct line-of-sight airflow is not possible, multiple coolers or repositioning the single cooler to cover different sections may be required.
Inverter compatibility — what "inverter compatible" means and what you need to run the Epicool 90 during power cuts
"Inverter compatible" means the Epicool 90's motor is designed to operate on the sine-wave AC output of a home inverter/UPS system — the motor does not require a pure-sine-wave inverter specifically (it works on modified sine wave as well, which is the output type of most Indian home inverters). This is relevant because some motor types — particularly brushless DC motors — can be damaged by modified sine wave output; the Epicool 90's conventional induction motor tolerates both pure and modified sine wave output. To run the Epicool 90 during a power cut, the inverter + battery system must be sized to handle the 185W running load. For a 12V lead-acid battery system: 185W ÷ 12V = approximately 15.4 amps continuous draw from the battery. A standard 150Ah tubular battery at 80% usable capacity (120Ah) would run the Epicool 90 for approximately 120 ÷ 15.4 = 7.8 hours theoretically, with real-world efficiency losses reducing this to approximately 5–6 hours. The inverter VA rating required: 185W ÷ 0.8 power factor = approximately 231 VA — a 500 VA or higher inverter is appropriate for the Epicool 90 load (which also allows headroom for other simultaneous loads like lights and fans). Note that the water pump component adds to the load — the 185W figure covers the full cooler including pump. Buyers with existing inverter systems should verify their inverter's remaining VA capacity after existing loads before adding the Epicool 90. The specific minimum inverter VA requirement for the Epicool 90 is not stated in the source — verify at purchase.
⚙️ All Features
90L Water Tank
20–25+ hours per fill at peak summer operation
Honeycomb Cooling Pads
Uniform water distribution · better cooling vs wood wool · longer life
Oscillating Louvers
Horizontal swing — distributes airflow across 48.5 m²
Inverter Compatible
Works on inverter/UPS during power cuts — 185W load
3-Speed Mechanical
High / Medium / Low — simple, reliable control
Castor Wheels
Easy room-to-room movement — no lifting required
Water Level Indicator
Visible tank level — know when to refill without opening
Collapsible Louvers
Directional airflow control — fully collapsible for focused throw
🎯 Ideal for
| Brand | Voltas |
| Model | Epicool 90 |
| Type | Desert Air Cooler |
| Tank capacity | 90 Litres |
| Cooling media | Honeycomb Pads |
| Coverage area | Up to 48.5 m² (~500 sq ft) |
| Air throw | ~15 metres |
| Power consumption | 185 Watts |
| Speed settings | 3 — High / Medium / Low |
| Controls | Mechanical |
| Inverter compatible | Yes — verify minimum inverter VA at purchase |
| Louvers | Oscillating · fully collapsible |
| Mobility | Castor wheels |
| Water level indicator | Yes |
| Dimensions (W×H×D) | 60 × 119.5 × 45 cm |
| Weight | 19 kg |
🛡️ Authorised Voltas Partner + Warranty
🏆 Why Buy from Mahajan Electronics?
- ✅Trusted 45+ years of experience in premium appliances.
- ✅24-hour delivery across Delhi NCR during business hours, subject to serviceability and stock.
- ✅GST invoice available — save up to 18% on eligible business purchases.
- ✅100% genuine Voltas products with official brand warranty.
- ✅Expert product consultation and dedicated after-sales support.
- ✅Competitive pricing and premium offer assistance.
- ✅Stores: Raja Garden, Jail Road and Dabri Mod.
- ✅Call / WhatsApp: +91-9710000251.
90L. 185W. 48.5 m². 15m Throw. Honeycomb. Inverter Compatible. Oscillating Louvers. Castor Wheels. Water Level Indicator. Order today.
Large-space evaporative cooling for Delhi NCR dry-heat months — 90L for 20+ hours per fill, 185W vs 1200W+ AC, inverter compatible for power-cut continuity. Best performance in April–June. 24-hour delivery. GST invoice. Genuine Voltas — Mahajan Electronics since 1981.
Powerful Cooling. Low Cost. Delivered in 24 Hours.
