Good morning experts. I have two 12 year old Mitsu 12000 Mr Slim, on/off air cons in my 36 sq mtr lounge, 3 metres apart on the outside wall.
Last month I bought a TLC Inverter 12000 from Lazada as it was a very good price, Bht 7500, including delivery. My local man came on Sunday and charged me Bht 3000 to remove one of the old ones and fit the TLC.
I decided to compare the efficiency/power usage between the two. I have a ‘smart’ thingy in my fuse box (CU) which sends the electricity consumption to my phone. I turned everything off on the breakers and tested each air con individually setting each at 28C, normal cooling for 20 minutes and recorded the number of units used. Then I did it with the Economy button pressed. Here are my results.
TCL. Normal = 0.50 units, Eco = 0.35, which equates to 1.5 and 1.0 per hour.
Mitsu. Normal = 0.34 units, Eco = 0.28 per hour, 1.0 and 0.72 per hour.
So the old one seems to use less electricity than the new TLC over the period of one hour. WHY?
Also, I wonder exactly how the units work. I know from testing myself that they both pump out cool air at 17-18C. They drawn in air from the room into the top, through the exchanger and back out into the room, until the temperature sensor measures that the air going in is at the temperature you have set on the remote. Then it turns off, or slows down, until that rises, then it turns back on. If you want the room to be cooler, it simply takes longer for the cool air to mix with the room’s air until the desired temperature is reached. The outside temperature is irrelevant, only that the room can get hotter if insulation, windows, curtains etc are not considered and allow the room to heat up.
Can someone explain IN SIMPLE TERMS, no scientific formulae please? Thank you.
I am considering another TLC as they are on offer on Lazada tonight, 10/10. But if the difference in the cost of running the old one is the same or less than the TLC, which will cost me about Bht 11k including fitting, what will be my return on cost per year? OK, a warranty on the TLC, one year on the TLC card, 5 years on Lazada????