In most cases, 2nd hand aircon will consume more electricity than a brand new one. When you’re looking to buy an air conditioner in Singapore, a used unit may attract you because the price tag is often much lower than a new one. However, it’s important to check its energy efficiency first to use it for a long time. Since utility costs in Singapore are high, it will take a large chunk of family budgets. Therefore, knowing about the energy consumption of an old aircon is necessary. Let’s know more about it.
Are Second-Hand Aircons Less Energy Efficient?
In most cases, yes. The energy efficiency of a second-hand aircon is usually lower compared to a new model, and there are several reasons for this:
- Older technology – Many used aircons come from older non-inverter models that naturally consume more electricity.
- Wear and tear – With years of use, components like compressors and coils lose efficiency.
- Lower NEA tick ratings – Second-hand units are often rated 2–3 ticks, while new inverter models commonly have 4–5 ticks.
- Poor maintenance – If the unit wasn’t serviced regularly, dust buildup, refrigerant leaks, or damaged parts reduce performance and increase energy consumption.
So, buying 2nd hand aircon is not bad but most of them will run less efficiently than newer models.
Why Energy Efficiency Matters in Singapore
Singapore’s tropical climate means many households run the aircon for 6–8 hours daily. According to the NEA, air conditioning can make up up to 40% of a household’s monthly electricity bill. Even a small drop in efficiency can add up to hundreds of dollars a year in extra electricity costs.
For example:
- A 2-tick second-hand unit may use 20–30% more power than a new 5-tick inverter model.
- If your monthly bill is $120 for cooling, that’s about $25–35 extra every month with the less efficient unit.
When a Second-Hand Aircon Might Still Make Sense
Even though efficiency is lower, there are situations where a second-hand aircon can be practical:
- Rental stays: If you’re in a rental flat on a lease of just 1 or 2 years, the lower price could still save cash before the higher electric bill kicks in.
- Seldom-used rooms: A guest room or store room that rarely uses the air conditioner doesn’t need the latest model to feel comfortable.
- Budget constraints: For a family that simply can’t stretch further, any working unit may be the cheapest path to relief.
How to Choose a More Efficient Second-Hand Aircon
Check below factors before deciding on a second hand aircon in Singapore:
- Look for a unit that is less than 5 years old.
- Prefer an inverter system over a non-inverter.
- Check the NEA energy label and avoid 1-tick units.
- Ask for the servicing history before buying.
- Ensure professional installation to avoid efficiency loss.
- Schedule regular servicing to keep it running as efficiently as possible.
Bottom Line
Older air conditioners in Singapore usually consume more energy than new ones. Older units might seem cheap upfront, but can cost you more in electric bills over time. If you plan to use the air conditioner for the long term, a brand-new inverter model is often a better choice. It will save you money and help the planet too.
FAQs
Are second-hand aircons always inefficient?
Not always, but most are less efficient than new inverter models due to age and technology.
Do second-hand aircons consume more electricity?
Yes, especially if they are older, non-inverter models or poorly maintained.
How can I check efficiency before buying?
Look at the NEA tick rating, check the unit’s age, and ensure it has been serviced regularly.
What is the lifespan of an aircon in Singapore?
Usually 8–10 years with proper maintenance, though efficiency starts to decline after about 5 years.
Should I choose a new or second-hand aircon?
If you’re staying in Singapore long-term, a new inverter model with 4–5 ticks will save more money over time.
