Book AC Services in Karol Bagh, Delhi

Inverter ACs show their best efficiency during sessions of 4+ hours when the compressor operates at relaxed low speed after initial cooldown. For short 1-2 hour bursts, inverter and non-inverter models consume similar electricity since both run at high speed to cool from scratch. If you primarily use AC for brief periods, a 3-star inverter gives nearly the same savings as a 5-star. The 5-star premium only pays off when daily usage exceeds 4-5 hours.

Most inverter ACs from brands like Voltas, Daikin, LG, and Blue Star have a built-in CTVS (compressor torque voltage stabiliser) that handles voltage between 150V and 270V. However, if your area regularly drops below 150V or spikes above 280V, an external stabiliser adds a useful safety layer. A good 4 KVA stabiliser for a 1.5 ton AC costs Rs 2500 to Rs 4000 from brands like V-Guard or Microtek. Check your actual voltage range using a multimeter during peak hours before deciding. For most urban areas with stable power, the built-in protection is sufficient.

Look for a metal or adhesive sticker on the side panel of your outdoor unit, usually on the right side near the service valves. The sticker lists the model number, serial number, power ratings, and most importantly, the refrigerant type labeled as R32, R410A, or R22. Next to the refrigerant type, you will find the factory charge amount in grams, such as R32 750g. It also shows the additional charge per extra meter of piping, typically written as something like 15g per meter. Take a photo of this sticker and save it on your phone so you have the information ready whenever a technician visits.

Washable AC filters can be cleaned at home for free by simply rinsing under running water and drying completely before reinserting. If you need a replacement filter because the mesh is torn or permanently clogged, it costs Rs 300-800 depending on the brand and model. HEPA or activated carbon filters used in premium AC models cost Rs 500-1200 and need replacement every 6-12 months. Cleaning your washable filters every 2 weeks during heavy use months keeps the AC running efficiently and prevents the evaporator coil from getting dirty. A dirty filter alone can increase your electricity bill by 10-15% and reduce cooling output noticeably.

Most major brands offer a 1-year comprehensive warranty covering all parts and labour, plus a separate 10-year compressor warranty. Some premium models from LG, Daikin, and Carrier extend comprehensive coverage to 5 years on select high-end units. The compressor warranty only covers the compressor motor itself, not the labour to replace it or other parts that may fail alongside it. Always register your warranty online within 30 days of purchase, as some brands reject unregistered claims.

The BEE label shows star rating at the top, followed by brand, model, and cooling capacity in watts. Below that you will find the ISEER value and estimated annual energy consumption in kWh. The label also shows the validity period, typically a 2-year window for the rating. Compare ISEER and annual consumption across same-tonnage models for the most accurate picture.

Ensure the wall behind the AC is completely waterproofed before mounting the unit, using waterproof primer or sealant. Dampness seeping through the wall can corrode the metal mounting plate and reach the unit's electrical components, causing short circuits. Fix any wall cracks, plumbing leaks, or seepage issues before they reach the AC area. If you notice damp patches forming on the wall near the AC, address the root cause immediately rather than just repainting.