Description
✅ 1-Year Comprehensive + 5-Year Compressor Warranty — Authorised Blue Star Partner · 100% Genuine · Mahajan Electronics Since 1979
Made in India. Blue Star authorised service centres. 24-hour delivery Delhi NCR. GST invoice available. 4.7★ Google Rated.
❄️ Blue Star 1 Ton 2★ Window AC 2026. 100% Copper — Condenser + Evaporator + Tubes. Turbo Cool. Comfort Sleep. Anti-Corrosive Blue Fins. R32. 5-Yr Compressor. WFA312LXU.
The Blue Star WFA312LXU is the compact window AC for rooms up to 110 sq ft — bedrooms, study rooms, small offices, and server rooms that need reliable, fast cooling without the installation complexity of a split AC. 100% copper construction throughout (condenser coil, evaporator coil, and connecting tubes — not just a copper-plated condenser); Turbo Cool for rapid temperature pulldown; Comfort Sleep Mode auto-adjusts through the night; Anti-Corrosive Blue Fins protect against Delhi NCR's dust and humidity; Energy Saver Mode; Self-Diagnosis; Auto Restart with Memory; R32 eco-friendly refrigerant. 2026 model. Made in India.
100% Copper throughout — condenser coil, evaporator coil, and connecting tubes — why full copper construction matters more than partial
The Blue Star WFA312LXU's 100% copper claim covers three distinct components of the refrigeration circuit — and the distinction matters. Many competing window ACs use copper only for the condenser coil (the outdoor-facing component that rejects heat) while using aluminium for the evaporator coil (the indoor-facing component that absorbs heat from room air) and aluminium or aluminium-copper composite for the connecting tubes. Blue Star's full-copper specification applies to all three. The evaporator coil's material is the more important of the two heat exchangers for indoor air quality and long-term performance: the evaporator operates in a humid environment where condensate continuously forms on its surface — in Delhi NCR's hard water and polluted air, this condensate carries dissolved minerals and particulates that deposit on the coil surface during evaporation. Aluminium evaporators develop aluminium oxide scale and eventually formicary corrosion (the ant-nest pitting caused by formic acid and formaldehyde in polluted indoor air, particularly common in areas with heavy traffic or industrial exposure). The copper evaporator's corrosion resistance prevents this degradation mechanism, maintaining the coil's designed heat transfer coefficient over the AC's operational life. The copper connecting tubes — the refrigerant pipes between the evaporator and condenser within the window unit — are the most failure-prone point in budget window ACs where thin-wall aluminium or aluminium alloy tube develops fatigue cracks at vibration contact points after 3–5 years of compressor vibration exposure. Copper's higher fatigue strength and ductility at the relevant tube wall thickness means the connecting tubes maintain their structural integrity through more vibration cycles, directly reducing the risk of refrigerant leak — the most common cause of window AC failure requiring costly re-gassing.
Turbo Cool — rapid temperature pulldown for the first minutes after switching on
A 1-ton fixed-speed rotary compressor has a single operating point — it runs at full rated capacity when on. Turbo Cool in the Blue Star context refers to the combination of maximum compressor output and maximum fan speed operating simultaneously when Turbo mode is activated, directing the full 3350W cooling capacity at the room for a set period (typically 30 minutes) before reverting to the normal set-temperature-based operation. In a small room (up to 110 sq ft) that has been closed and heated to 40–45°C during a May afternoon, the thermal mass of furniture, walls, and ceiling retains heat for the first 10–15 minutes even with the AC running — Turbo Cool's maximum-output operation compresses the time to reach a comfortable temperature from 15–20 minutes to 8–12 minutes. For someone returning home to a hot room after work, this is the difference between near-immediate relief and a 15-minute wait sitting in discomfort.
Comfort Sleep Mode — intelligent overnight temperature management for undisturbed sleep
Standard AC operation in a small room at night creates a well-documented comfort problem: when the room has been cooled to the set temperature (say, 24°C), the AC cycles off and the room warms; when it exceeds the set point, the AC restarts at full fan speed and blows cold air at the occupant — the temperature swing and the air blast can disrupt light sleep or cause discomfort that shortens deep sleep duration. Comfort Sleep Mode addresses this by gradually raising the set temperature by a small amount (typically 0.5–1°C per hour) over the first 2–3 hours of sleep mode — matching the body's own temperature preference shift as sleep deepens — and reducing fan speed to minimise airflow noise and draft. The result is a room that stays cool enough for comfortable sleep without the sharp cooling cycles and fan-on blasts that characterise standard AC operation, while simultaneously consuming less electricity through the night as the set temperature gradually rises.
Anti-Corrosive Blue Fins
Blue Fin coating on the condenser and evaporator fins is a hydrophilic surface treatment that makes water spread into a thin, fast-draining film rather than beading on the fin surface. In Delhi NCR's environment — combination of construction dust, vehicle exhaust particulates, and monsoon humidity — beaded water droplets on uncoated fins carry dissolved pollutants that concentrate as the water evaporates, forming scale and corrosion deposits that progressively reduce fin heat transfer efficiency. Blue Fin's fast-draining behaviour removes these dissolved pollutants with the water before they can concentrate and deposit — maintaining fin cleanliness and heat transfer efficiency over more operational years.
Auto Restart with Memory + Self-Diagnosis
Auto Restart with Memory restores the exact previous mode (temperature, fan speed, operating mode) after power restoration — not just switching back on to a default state. For a room where a specific nighttime temperature setting has been fine-tuned over weeks of use, the Memory function preserves this setting through power cuts rather than requiring manual re-entry after every load-shedding event. Self-Diagnosis displays alphanumeric error codes on the unit's display when a fault is detected — specific codes (e.g., E1 for sensor fault, P4 for high pressure) guide the service technician directly to the faulty component, reducing diagnostic time and service visit duration.
Dry Mode + Energy Saver Mode
Dry Mode runs the compressor at reduced capacity with fan at low speed — removing moisture from the indoor air without aggressive cooling. In Delhi NCR's July–August peak monsoon at 85–95% relative humidity, a room at 30°C with high humidity feels as uncomfortable as a dry room at 35–36°C; Dry Mode reduces humidity toward the 50–60% comfort range without making the room too cold. Energy Saver Mode (also called auto-fan or economy mode) switches the indoor fan off when the compressor is off during temperature maintenance cycles — reducing total electricity draw during the periods when the room is already at the set temperature.
High-Efficiency Rotary Compressor + R32
Rotary compressors have fewer moving parts than reciprocating (piston) compressors — the single rotating element creates continuous compression without the intake/compression/exhaust cycling of a piston, resulting in smoother operation and lower vibration transmission to the window unit frame and the wall opening. R32 refrigerant's thermodynamic efficiency allows the compressor to operate at a lower pressure differential for equivalent cooling output compared to R22 (legacy) or R410A, contributing to the 778.75 kWh annual consumption figure. R32 has zero ozone depletion potential — aligned with India's refrigerant transition schedule.
🎯 Ideal for
| Brand | Blue Star |
| Model | WFA312LXU (2026) |
| Type | Window AC — Fixed Speed |
| Capacity | 1 Ton |
| Cooling capacity | 3350W |
| Energy rating | 2 Star — ISEER 3.33 |
| Annual consumption | 778.75 kWh/year |
| Compressor | High-Efficiency Rotary |
| Condenser material | 100% Copper |
| Evaporator material | 100% Copper |
| Connecting tubes | 100% Copper |
| Fin protection | Anti-Corrosive Blue Fins — hydrophilic coating |
| Refrigerant | R32 — Zero ODP |
| Turbo Cool | Yes — maximum output rapid pulldown |
| Comfort Sleep | Yes — auto temperature adjustment overnight |
| Energy Saver | Yes — fan off during off-cycle |
| Dry Mode | Yes — dehumidification mode |
| Auto Restart | Yes — with Memory (restores last setting) |
| Self-Diagnosis | Yes — error code display |
| Airflow direction | 2-Way |
| Noise level | 56 dB |
| Voltage | 230V / 50Hz / Single Phase |
| Dimensions (D×W×H) | 66 × 66 × 43 cm |
| Colour | White |
| Country of origin | Made in India |
| Warranty — product | 1 Year Comprehensive |
| Warranty — compressor | 5 Years |
🛡️ Warranty
1 Ton. 100% Copper Throughout. Turbo Cool. Comfort Sleep. Blue Fins. R32. 5-Yr Compressor. 2026 Model. Order today.
Smart cooling for small spaces. Built for Indian summers. 24-hour delivery Delhi NCR. GST invoice. Genuine Blue Star — Mahajan Electronics since 1979.
Product image for reference. Window AC requires window or wall opening of appropriate size — verify dimensions before ordering. Warranty T&C apply. Made in India.
|
|
|
|
|---|---|---|
Turbo CoolEnsures quick cooling in a few minutes during extreme summer conditions. |
Energy SaverThe energy saver mode helps save on your electricity bills, while giving a wonderful cooling experience. |
High Energy Efficient Rotary CompressorThe compressor is specially designed to deliver maximum cooling while using low power and helps you save on your power bills. |
|
|
|
|
|---|---|---|
Anti Corrosive Blue Fins for ProtectionResists water and dust deposits on fins, thus delivering unhindered cooling performance and enhanced durability. |
100% CopperBlue Star air conditioners' condenser coil, evaporator coil, and connecting tubes are made of 100% copper, thereby ensuring reliable cooling performance and enhanced durability. |
Auto Re-start with MemoryThe AC remembers the last set mode and automatically resumes functioning with the same pre-set mode, ensuring convenience after power cuts. |
|
|
|
|
|---|---|---|
Self DiagnosisAlerts the user to any fault in the AC's operation, with an error code, which helps in faster resolution. |
Comfort SleepIntelligently adjusts the AC's operation providing the right cooling comfort and ensures comfortable sleep. |
Humidity Control (Dry Mode)In dry mode, the AC keeps the room cool and dry by making the indoor air dry, removing excess moisture from the indoor air. |
