During Gurgaon winters, windows stay closed, trapping steam from hot geyser showers and cooking fumes inside bathrooms and kitchens. Without adequate mechanical exhaust ventilation, bathrooms quickly develop black mold, peeled ceiling paint, and rusty mirrors.
How to Calculate Required Airflow (CFM)
Airflow is measured in Cubic Feet per Minute (CFM). The standard rule for residential spaces is:
- Bathroom: Requires at least 1 CFM per square foot of bathroom area (e.g., an 8x6 ft bathroom = 48 sq ft = minimum 50 CFM fan). For bathrooms with a shower stall, add 20 CFM; for geyser rooms, aim for 70–100 CFM.
- Kitchen: Requires 10 to 15 air changes per hour, requiring a high-output 150–250 CFM heavy-duty axial or centrifugal exhaust fan.
Glass Window Cutout vs Wall Mount
| Type | Best Fit | Key Advantage |
|---|---|---|
| Glass-Mounted Circular Fan (6" or 8") | Bathrooms with frosted window panes | Clean circular glass cut, light weight, built-in shutter |
| Wall-Mounted Square Louver Fan | Kitchens or solid brick shafts | Higher CFM, heavy-duty blades, exterior backdraft shutter |
3 Things to Look For When Buying
- 100% Copper Winding Motor: Aluminum winding fans overheat and seize within two seasons. Copper motors run cooler and last for years.
- Automatic Backdraft Shutters: Gravitational flaps close automatically when the fan is switched off, stopping cold winter winds and pests from flying in.
- Double Ball Bearings: Sleeve bearing fans develop squeaking, rattling noises after 6 months. High-precision ball bearings ensure silent whisper-quiet operation.
Need glass cutting, framing, or exhaust fan installation in Gurgaon? Power Services Home Fix offers same-day exhaust fan installation starting at ₹249. Call 93193 06971.