Air-con: Inverter VS non-inverter

[Aaronlkl]

HAs anyone tried both? Inverter really save energy?

[Chucky2007]

Confirmed save more energy and $

[Kb27]

I have both. It seems the non-inverter one but with more energy saving stars use less energy.

[Deathism]

I read a couple of articles online which mentioned that tangible savings comes only when the air-con operates for a prolonged period of time in a day.

 

However, if it is used for just a couple of hours a day, the savings will be negligible and in actuality will be negated by the higher selling price of an inverter unit.

 

The article provided some calculations though i cant recall if it was in a local context.

 

Are these really true? Can someone who have used both inverter and non inverter units, comment?

[Aaronlkl]

I have both. It seems the non-inverter one but with more energy saving stars use less energy.

 

Hi, u mean the non-inverter one save more energy?

 

[Kb27]

Hi, u mean the non-inverter one save more energy?

I had a Fujitsu inverter 1-split for a couple of years.

Then I added a 2nd Sanyo non-inverter 1-split. This one has more "stars" rated.

It seems the electrical bill didn't go up more than 2x.

 

My usage for both is about 10 hrs each day.

 

I would suggest you just get the normal one with more energy saving stars instead of an inverter type, if the cost is too high.

 

[Alim]

Whether inverter or non-inverter, I think with proper maintenance and temp set at 25 or more, any aircon shd be able to cool the room efficiently and save electricity.

[Babyt]

buy inverter if u need to switch on more than 1 aircon at the same time.

 

otherwise, a non inverter will do.

 

[Aaronlkl]

I had a Fujitsu inverter 1-split for a couple of years.

Then I added a 2nd Sanyo non-inverter 1-split. This one has more "stars" rated.

It seems the electrical bill didn't go up more than 2x.

 

My usage for both is about 10 hrs each day.

 

I would suggest you just get the normal one with more energy saving stars instead of an inverter type, if the cost is too high.

 

Am i right to say that your Fujitsu inverter has 4 ticks while the Sanyo non-inverter has 3 but both seems to be almost equally energy efficient?

[Kb27]

Am i right to say that your Fujitsu inverter has 4 ticks while the Sanyo non-inverter has 3 but both seems to be almost equally energy efficient?

I can't remember how many ticks the Fuji has.

I only know I didn't get the "savings" I was hoping for.

 

But I think nowadays, just look for those with more ticks and it should be quite efficient.

[Happily1986]

do you notice your electricity bills going down after switching to inverter type? Mine didn't. I have this impression that the Power Company do bill projection. Do they really charge you for what you use?

[Tom_kkh]

Whether inverter or non-inverter, I think with proper maintenance and temp set at 25 or more, any aircon shd be able to cool the room efficiently and save electricity.

 

 

set at 25? might as well use fan.

 

my air con never goes above 21.

[Whathefish]

HAs anyone tried both? Inverter really save energy?

Ultimately depends on your usage.....just like getting a hybrid car..if your mileage is very low..wat is the point of paying so much for the technology to save fuel.

 

[SimonTan]

Inverter is good for those who uses the air-con often, and also 2-3 rooms at various loads.

Inverter is similar to variable frequencies....it varies the fan coil performance according to number of rooms in use.

Non-inverter will operate at the same speed, no matter 2-3 rooms are in use. So if only one room is in use, then the non-inverter one will be 'over' sized and wasting electricity.

 

Anyway...how long can a typical air-con system last? 5 years or 10 years?

My parents house, unit is already 8 years old (seldom use...mainly during CNY).

Do you think its time to change to a inverter type?

 

[marwing]

set at 25? might as well use fan.

 

my air con never goes above 21.

 

 

You are like my neighbour downstair. Open air-con big big.

My floor very cold due to my neighbour's air-con downstair.

I use sponge mattress type to sleep, shiok shiok.

Free cooling.

[Deathism]

i wouldn't if i were you.

 

at least wait till the current one conks out.

[Cdior]

Whether inverter or non-inverter, I think with proper maintenance and temp set at 25 or more, any aircon shd be able to cool the room efficiently and save electricity.

 

 

ki siao. set 25... u r really wasting $.

haha

 

 

[Fooblack]

price bet inverter and non-inverter should be $800 - $1k plus. The savings depend on the usage.

 

you need to ask yourself (or a honest seller) whether your usage will be heavy enough to cover the the upfront higher price.

 

recently, I bought a system 4 daikin non-inverter (3 ticks). The seller asked me not to get a inverter since at most, I will be switching on the aircon for 1 room for about 8hrs daily. Most of the time, will be hapzard usage for the other rooms. Unless using 2 or more rooms for more than 10 hrs per day, he will then recommend the inverter instead.