Description
One Box. One Opening. No Outdoor Unit.
1 Ton Window AC · 100% Copper · 5-Yr Compressor.
The window AC for rooms where a split simply isn't practical · a single self-contained unit — no outdoor unit to mount, no copper piping to run through walls, no drilling across a facade · 100% copper throughout: condenser coil, evaporator coil and connecting tubes, where many window ACs use copper only in the condenser · 1 ton / 3350 W for rooms up to about 110 sq ft · Turbo Cool for walking into a hot room · Comfort Sleep easing the temperature overnight · anti-corrosive Blue Fins · Dry Mode for the monsoon · Energy Saver · auto restart with memory · self diagnosis · R32 · ISEER 3.33, about 778 units a year · 56 dB · 1 year comprehensive + 5 years compressor · made in India
Window
formatwhen a split can't go in
There are rooms where a split AC is the wrong answer, and this is the machine for them. A split needs an outdoor unit mounted on a wall or balcony, copper piping run through the building, and drainage taken outside. In a rented flat, a first-floor room with no balcony, a shop back-room, or a housing society that won't permit units on the facade, none of that is straightforward — and often it's simply not allowed. A window AC is one sealed box that sits in a window or a wall opening. Installation is quicker, cheaper, and reversible — which matters if you're renting and will take it with you. The trade is that the compressor sits in the room with you, so it's audible at 56 dB where a split's isn't.
100% copper on all three — and why the evaporator is the one to ask about
"100% copper" is claimed loosely across the market, so it's worth being precise about what it covers here. This machine uses copper for the condenser coil, the evaporator coil and the connecting tubes. Many window ACs at this price use copper only in the condenser and aluminium elsewhere. The evaporator is the one that matters most indoors: it sits in a constantly humid environment where condensate forms on it every hour the machine runs, and in Delhi's polluted air that moisture carries dissolved pollutants onto the coil. Copper resists that far better than aluminium. And the practical difference when something does go wrong: a copper leak can be brazed on site, while an aluminium coil usually means replacing the whole part.
Auto restart with memory — a small feature that matters daily in Delhi
When the power goes and comes back, an ordinary AC stays off. You come home to a hot room, or you wake at 3 am to switch it on again. Auto restart with memory brings the unit back by itself, at exactly the settings you left it — same mode, same temperature, same fan speed, not a factory default. Nobody has to find the remote in the dark. It's genuinely useful in a bedroom, a room with elderly parents, or a shop where the AC is left running. Paired with self diagnosis — which shows an error code so the technician arrives knowing where to look — these two features quietly save more annoyance than most of the headline specs.
✨ Modes and control
Dry Mode earns its place in July and August — a humid room at 30°C feels worse than a dry one at 33°C, and dehumidifying is often the better fix than dropping the temperature further.
🎯 Right for
If you have somewhere to mount an outdoor unit and permission to do it, a split will run quieter indoors — tell us your situation and we'll advise honestly rather than push the format.
⚙️ Build
Unit size is 66 × 66 × 43 cm — measure your window or wall opening before ordering, and check the sill can take the weight.
Runs the machine at full output for the initial pull-down — the setting for walking into a shut room at 4 pm, not for running all evening.
Eases the temperature up through the night rather than holding one setting, which is what stops the early-morning over-cooling that wakes people.
Anti-corrosive treatment on the fins — the protection that decides how long the coils survive Delhi's dust, humidity and pollution.
A window AC needs a properly sized opening, a slight outward tilt for drainage, and a sealed frame. Get that right and the rest follows.
| Brand / Model | Blue Star WFA312LXU · 2026 model ✅ |
| Type | Window air conditioner — fixed speed ✅ |
| Capacity | 1 Ton · 3350 W — rooms up to approx. 110 sq ft ✅ |
| Energy Rating | 2 Star · ISEER 3.33 ✅ |
| Annual Consumption | 778.75 kWh/year ✅ |
| Compressor | High-efficiency rotary ✅ |
| Condenser Coil | 100% copper ✅ |
| Evaporator Coil | 100% copper ✅ |
| Connecting Tubes | 100% copper ✅ |
| Fin Protection | Anti-corrosive Blue Fins ✅ |
| Refrigerant | R32 · zero ODP ✅ |
| Modes | Turbo Cool · Comfort Sleep · Dry · Energy Saver ✅ |
| Convenience | Auto restart with memory · self diagnosis ✅ |
| Airflow | 2-way ✅ |
| Noise Level | 56 dB ✅ |
| Power Supply | 230 V / 50 Hz / single phase ✅ |
| Dimensions (D×W×H) | 66 × 66 × 43 cm ✅ |
| Colour | White ✅ |
| Country of Origin | Made in India 🇮🇳 ✅ |
| Warranty | 1 Year comprehensive + 5 Years compressor ✅ |
Why buy from Mahajan Electronics?
- 📐 We size the AC to your actual room
- 100% genuine Blue Star with brand warranty
- 24-hour delivery across Delhi NCR
- GST invoice — save up to 18% on business purchases
- 45+ years of trust · rated 4.7 on Google
- Raja Garden · Jail Road · Dabri Mor
Order today. Delivered in 24 hours.
Blue Star WFA312LXU · 2026 Model · 1 Ton Window AC · 2 Star · ISEER 3.33 · 100% Copper Throughout · Turbo Cool · Comfort Sleep · Blue Fins · R32 · 1-Year + 5-Year Compressor Warranty
Warranty as per Blue Star's terms and conditions — 1 year comprehensive and 5 years on the compressor, subject to T&C; the scope of cover, gas top-up terms, exclusions, installation requirements, product registration and the service process are subject to brand policy and the final invoice or warranty card. Installation, window or wall opening preparation, framing, carpentry, grill removal, sealing, support brackets, electrical wiring, MCB, socket provision, stabiliser if required, dismantling and civil work are chargeable separately unless expressly included on the final invoice; the customer is responsible for obtaining any landlord, building or society permissions required. Cooling performance, room coverage, cooling capacity, ISEER, annual consumption, noise level and running cost vary with room size, ceiling height, insulation, sunlight exposure, floor level, occupancy, appliance heat load, opening size and sealing quality, installation tilt and mounting, filter condition, selected mode, thermostat setting, voltage and maintenance. The stated 110 sq ft is indicative guidance only; confirm sizing for your specific room before purchase. BEE star ratings, ISEER and annual unit figures are as certified at the time of manufacture under standard test conditions and are subject to periodic revision. A window air conditioner houses the compressor within the room-side unit and is audible in normal operation. R32 refrigerant handling and servicing must be carried out only by qualified technicians. Image for reference only; actual serial number, manufacturing date, BEE label, unit design, remote, accessories, packaging and finish may vary by batch.
Made in India. Please Note: The image shown is for reference purposes only. Actual product details, including the serial number and manufacturing date, may vary.
