AC Electricity Cost Calculator — Nigeria
Calculate daily and monthly cost of running your air conditioner at Nigeria NERC tariff rates. Compare inverter vs non-inverter.
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AC Capacity & Wattage Guide
| Capacity | Non-Inverter | Inverter | Room Size |
|---|---|---|---|
| 1 HP | ~900W | ~600W avg | Up to 15 m² |
| 1.5 HP | ~1,350W | ~900W avg | 15–25 m² |
| 2 HP | ~1,800W | ~1,200W avg | 25–35 m² |
| 2.5 HP | ~2,250W | ~1,500W avg | 35–50 m² |
Frequently Asked Questions
What is HP in an air conditioner?
HP (horsepower) is used in Nigeria and parts of Asia to rate AC capacity. 1 HP = 9,000 BTU/h of cooling. Common sizes: 1 HP (small room), 1.5 HP (medium room), 2 HP (large room), 2.5 HP (very large room).
How many watts does a 1.5 HP AC use?
A non-inverter 1.5 HP AC uses approximately 1,119–1,500W. An inverter AC of the same capacity uses about 700–900W on average because it varies speed. Inverter ACs save 30–50% on electricity.
What is an inverter AC and is it worth it in Nigeria?
An inverter AC adjusts its compressor speed rather than switching on/off. It uses 30–50% less electricity. Given Nigeria's high Band A tariff of ₦225/kWh and long AC usage hours, inverter ACs typically pay back their premium cost within 1–2 years.
How much does it cost to run AC all day in Nigeria?
A 1.5 HP non-inverter AC running 12 hours at Band A (₦225/kWh) costs about ₦3,038–₦4,050 per day, or ₦91,000–₦121,500 per month. An inverter version saves around ₦40,000 monthly at the same usage.
What is the most efficient AC temperature setting?
24–26°C is the most energy-efficient range for most climates. Every 1°C lower can increase energy consumption by 6–8%. In Nigeria's heat, setting 25°C instead of 18°C can cut AC costs by nearly 50%.