Optimal Solar Panel Setup for 1.5 Ton AC

Find out how many solar panels you need for a 1.5-ton AC. Discover energy-saving insights and check financing options with Bajaj Finserv.
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3 min
19-Feb-2025
The number of panels needed depends on factors such as sunlight availability, inverter efficiency, and battery backup. A typical setup may require 6 to 8 solar panels of 350W each to run the AC effectively. This article explores the key considerations and calculations to determine the optimal solar panel capacity for a 1.5 ton AC unit.

Look at a selection of ACs on Bajaj Mall. Alternatively, visit any of Bajaj Finserv’s 1.5 lakh partner stores in 4,000 cities to select a model that fits your cleaning preferences. Enjoy Easy EMI and zero down payment offers exclusively with Bajaj Finserv.

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Understanding the energy consumption of a 1.5 ton ACs

A 1.5 ton air conditioner is a popular choice for cooling medium to large rooms. Its energy consumption depends on factors like efficiency rating, usage hours, and climatic conditions. On average, a 1.5 ton AC consumes around 1.5 to 2 kW per hour, translating to approximately 1,500 to 2,000 watts. Over 8 hours of daily use, this amounts to 12-16 kWh per day. The energy efficiency ratio (EER) and star rating of the AC also play a significant role in determining power consumption. Modern inverter ACs tend to consume less energy compared to conventional models.

Calculating solar panel requirements

To determine how many solar panels are needed for a 1.5 ton AC, follow these steps:

  • 1. Estimate daily energy consumption: If the AC uses 1.8 kW per hour and runs for 8 hours, the daily requirement is around 14.4 kWh.
  • 2. Consider solar panel efficiency: A 350W solar panel produces about 1.5 kWh per day, depending on sunlight conditions.
  • 3. Calculate panel requirement: To generate 14.4 kWh/day, divide by 1.5 kWh per panel:
  • 14.4 ÷ 1.5 = 10 panels (each 350W)
  • 4. Factor in inverter and battery efficiency: An inverter may have 85-90% efficiency, requiring slightly more solar capacity.
  • 5. Adjust for weather conditions: Locations with lower sunlight may require additional panels for consistent performance.

Factors influencing the number of solar panels

Several factors affect how many solar panels are needed to run an AC efficiently:

  • Sunlight availability: Areas with more sunshine require fewer panels.
  • AC efficiency: Inverter ACs consume less energy than traditional models.
  • Battery storage: Having a battery backup ensures continuous operation during low sunlight.
  • Panel efficiency: Monocrystalline panels are more efficient than polycrystalline ones.
  • Additional household loads: If other appliances run on the same system, extra panels are needed.

Benefits of using solar panels for ACs

  • Reduces electricity bills: A solar-powered AC lowers monthly energy costs.
  • Eco-friendly solution: Solar power reduces its carbon footprint and reliance on fossil fuels.
If you are looking to buy a solar AC, visit one of our partner stores, pick the AC of your choice, and convert its cost into Easy EMIs. With a flexible repayment tenure of up to 60 months. This financing solution from Bajaj Finserv is available on 1 million products.

Explore air conditioners on Easy EMI with Bajaj Finserv

Check the attributes and in-depth specifications of 1.5 ton ACs on Bajaj Mall. Once you have gathered all the necessary details, visit the nearest Bajaj Finserv partner store to pick your preferred air conditioners. Complete your purchases with Bajaj Finserv’s financing options, where you have the flexibility to pick a repayment period that fits your budget, allowing for Easy EMI payments. Bajaj Finserv also offers financing solutions for electronic purchases.

Benefits of shopping with Bajaj Finserv’s financing options

  • Affordable pricing: Get the best deal on an air conditioner at Bajaj Finserv partner stores, allowing you to enjoy quality at a price that fits your budget.
  • Easy EMIs: Purchasing your air conditioner has never been easier. Bajaj Finserv offers Easy EMIs, letting you spread your payments comfortably over time.
  • Zero down payment: Take home your desired air conditioner today with zero down payment and start enjoying it without worrying about upfront costs.
  • Free home delivery available: Get complimentary home delivery on select air conditioner models for a hassle-free shopping experience.

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Frequently asked questions

How to calculate the tonnage of an AC unit?
To calculate the tonnage of an air conditioning unit, divide its cooling capacity in BTUs (British Thermal Units) by 12,000. This gives the tonnage, as one ton equals 12,000 BTUs. For example, an AC with 24,000 BTUs would have a 2 ton capacity. The tonnage indicates how much heat the unit can remove from the air per hour.

What factors affect AC tonnage calculation?
Factors like room size, insulation, sunlight exposure, ceiling height, and the number of occupants affect the AC tonnage calculation. Poor insulation or heavy sun exposure increases the cooling load, requiring a larger unit. The room's function and number of electronics also impact the cooling capacity needed to maintain comfort.

Can I determine AC tonnage from the model number?
Yes, you can often determine the tonnage of an AC unit from its model number. Manufacturers typically encode the tonnage in the model number. For example, a model number with the digit "24" could indicate a 2 ton unit (24,000 BTUs). It is important to check the manufacturer's guidelines or specifications to confirm.

How much tonnage is needed for different room sizes?
The required tonnage depends on the room size. For a room of 100 to 150 square feet, a 1 ton AC unit is typically sufficient. For a 150 to 250-square foot room, a 1.5 ton unit is ideal. Larger spaces, such as 250 to 400 square feet, may need a 2 ton unit, while bigger rooms may require more.

How to calculate the tonnage of an AC unit?
To calculate the tonnage of an air conditioning unit, divide its cooling capacity in BTUs (British Thermal Units) by 12,000. This gives the tonnage, as one ton equals 12,000 BTUs. For example, an AC with 24,000 BTUs would have a 2 ton capacity. The tonnage indicates how much heat the unit can remove from the air per hour.

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