Basics of inverter air conditioners and conventional air conditioners, power consumption, type of wire suitable for each capacity, allowable distance between outdoor and indoor units, subjective assessment of air conditioner brands , do’s and don’ts when using air conditioners… All are here, read only 1 article and you are a connoisseur of air conditioners.
The concept of an inverter is simply a device capable of saving electricity to avoid unnecessary waste when used. The whole device is controlled by a circuit board using inverter technology. To be more precise, the board controls the Hz frequency (50Hz – 60Hz) at a range of 30-90% of the machine’s operating capacity.

– Here are a few pros and cons listed as follows

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1. Pros:

When it comes to Inverter, we must first talk about the ability to save electricity, which is the forte of this line. Power savings range from 30 to 90% of electricity compared to machines of the same capacity but not capable of saving electricity (Non-Inverter series). About this power saving, if compared with the monthly payment amount, it is only 1/3 of the normal Non-Inverter line.

+ The most remarkable thing is the ability to maintain an extremely stable room temperature. Always maintain the preset temp level on the Remote. This will prevent you from feeling too hot or too cold when using this technology. Especially, always create a pleasant atmosphere and the machine operates at the quietest, quietest level even when you sleep.

+ In order to improve professionalism as well as outstanding features of air conditioning, now residential air conditioners are equipped with additional features such as deodorizing (plasma), ion generation to help the atmosphere in your room. become cleaner and more comfortable.

+ Very suitable for temperature sensitive users and for babies (safe baby temperature at 28-29*C is always accurate)

+ Allow running at 120-125% capacity when the room is not cold enough within 45-1h. After cold enough, it will reduce at 50-75% capacity depending on the inverter control.
2. Cons:

+ Because the line is controlled mostly by electronic circuits, the machine is very uncomfortable about voltage. The initial condition when installing the machine is that you must meet the correct voltage standards set by the manufacturer +- 5% . So when installing the inverter, you must determine that the source voltage must be at a stable level (can install a voltage stabilizer if necessary).

+ Because it is controlled by most of the electronic circuits, it will be easily damaged when encountering extreme weather such as the scorching noonday heat, hot and humid days continuously. Although it is designed to be installed outdoors, you need to pay attention because it is no different from a high-end PC set when exposed to the sun and rain day and night.

+ The rate of successful repair and replacement parts is low because new components are not available, but only old components are screened for each other. More specifically, most suppliers currently only sell complete machines, not retail components.

+ The cost is almost double compared to the Non-Inverter with the same capacity.

+ Inability to run PowerFul levels for too long. That is, the room must be in the right standard, cold quickly and then the machine will reduce the capacity to be durable. The longer you run PowerFul, the shorter the life of the machine. => the ability to save electricity can only be seen once when the room is cold

+ Requires continuous maintenance, periodically several times a year.

+ It is not allowed to run in rooms with overload conditions compared to machine capacity.
B. Non-Inverter :

– The workers often call it MONO. The machine only runs in one mode, PowerFul, so if you Set Temp is 16 * or 24 * C, the coldness is the same. There is no possibility to save electricity. The way to identify is very clear: in the internal part of UnitOutdoor there is no electronic circuit, only 1 Capa for Compressor and 1 Capa for FANMotor.

1. Pros:

+ Runs extremely stubborn (if you clean it every 3 months, you can only wash it but don’t know it’s damaged, very little damage)

+ Allows overloading at a higher time than the inverter (ie the inverter dies before it, it will take a few months to die)

+ Components, failures are easy to recognize, repair and maintenance are also easy

+ The price of the machine is quite cheap, more than 4 million is a brand new set of 1.0HP

+ Born to always run at PowerFul. Meet the needs of running overload or running in a room larger than the machine (if the room is too big for the machine capacity, it won’t work)
2. Cons:

+ There is no ability to save electricity. The device is always running at PowerFul

+ Because there is only 1 touch sensor on UnitIndoor, the Compressor is easily damaged if you Set Temp Remote too close to the initial temperature of the room. For example: if your initial room temp is 30*C, it’s best to keep it at 24-27*C. In order to prevent the machine from running in a state of continuous shutdown, the Compressor can be killed at any time.

Power consumption of air conditioner (lowest type is 0.5HP)

+ HP (horsepower) / Kw/h (value of power consumed in 1 hour) / W of Compressor’s own capacity (excluding other attached devices)

+ 0.5HP ~ 0.5Kw/h 375W

+ 1.0HP ~ 1Kwh ~ 750W (standard)

+ 2.0HP ~ 2Kwh ~ 750×2 = 1500W

Standard for CB (breaker), electrical wiring for air conditioner is distributed as follows (calculated according to CADIVI 1-core wire standard)

1.0HP 1.2 wire using CB 10Ampere

+ 1.5HP 1.6 wire using CB 10-15Ampere

+ 2.0HP 2.0 wire using CB 20Ampere

+ 2.5HP – 3.0HP 2.5 wire using CB 30Ampere

Regulator for air conditioner:

– Need to see the standard Ampere level of the machine and then calculate to buy a moderate voltage stabilizer, neither lacking nor redundant for the device.

– For Non-Inverter type devices (collectively referred to as non-power-saving devices), when starting to operate, there will initially be a fairly high Start line and then quickly drop to the standard Ampere level of the machine designed depending on the device. according to the capacity of each type. Details are listed Ampere level as follows:
1. About the Compressor line with Gale-style construction

HP (horsepower / machine power) / Initial Start Current / Standard Ampere Current ( Current Ampere )

+ 1.0HP / 18 – 20Ampere / 3.6 – 4Ampere

+ 1.5HP / 25 – 31Ampere / 5.5 – 6.5Ampere

+ 2.0HP / 38 – 42Ampere / 8 – 11Ampere

2. About Compressor line with Piston type structure

HP (horsepower / machine power) / Initial Start Current / Standard Ampere Current ( Current Ampere )

+ 1.0HP / 30-32Ampere / 4-4.5Ampere

+ 1.5HP / 36-56Ampere / 5.5 – 6.5Ampere

+2.0HP / 60-62Ampere / 10-11.5Ampere

With Inverter, the Ampere level only ranges from 0 – MaxAmpe Current (ie, no Start line). So when choosing a voltage stabilizer for the Inverter line, only based on the MaxAmpe level of the device, the selection is enough. Ex: 1.0HP inverter running Max Amp is 4A => just buy 1KVA ~ 5A is enough

Reviews of air conditioner brands

1. Panasonic /Toshiba :

– Talking about residential air conditioners, these two giants are the bosses in terms of design, technology, durability and the best coldness and silence. Buying one of these two types is high-end, no need to argue about the quality. Quality and technology of Japan is always at the forefront in the field of residential refrigeration.

About these two brands are imported goods with 100% raw belts and components from neighboring countries such as: Malaysia / Thailand / Indonesia / China

– Goods imported from abroad
2. LG :

– Meeting the needs of cheap prices, beautiful designs and a warranty period of 2 years for the whole country. Then LG is the most choice for consumers today. With quite good quality, relative durability for Made in Vietnam goods, Korean technology

– Made in Vietnam goods

3. Carrier :

– USA goods, there is a booth in the section Vo Van Tan – Tran Quoc Thao. This item runs super cold in the first time, the highest counting life is 2 years (running 8/24 often). Regarding the worker’s comment, Ti can guess that it will run for 2 years and have to replace the new Compressor.

– Currently, it has cooperated with Toshiba, so if you pay attention, you will see that the models of Carrier and Toshiba are similar. Remote, these two children can still use each other as usual.

– Goods imported from abroad

– The Non-Inverter series of Toshiba and Carrier are both unique types, only the outer plastic shell is different. So if you buy a Carrier Non-Inverter, you are also buying a Toshiba Non-Inverter (at least the Carrier Non-Inverter is cheaper than buying a Toshiba).

4. Daikin :

– Distributed by Viet Kim company (in HCM). Compressor warranty is up to 3-5 years. The model is quite eye-catching, the quality is quite comparable to Mitsubishi

– Average wind speed. Compared to Panasonic/Toshiba, it’s too weak to get cold fast

– Goods imported from abroad

5. Samsung :

– Beautiful designs, surprisingly cheap prices for famous brands but…. Not specialized in this Air Conditioner.

– Brand for those who love cheap things like Sanyo. Quality is at the bottom of the table when comparing the level of use up … warranty period.

– Made in Vietnam goods
6. Sharp :

– The model at a glance can be mistaken for a product of National (the previous name of Panasonic). Good quality, nice design. However, the crime of advertising is so small that few people know about it.

– Goods imported from abroad

7. Chinese goods (components imported directly from China for assembly)

– Is the best-selling item in HCM. It’s surprising to say that, but because the quality can vary depending on imported goods from China. No one said that all Chinese goods are bad, but can only say “you get what you pay for”. With such a low price, you will have a machine with the same quality as Sanyo or worse. With a high price, you have a set of machines with the same quality as Panasonic/Toshiba but ….. no name in Vietnam.

– So the quality depends on the distributor and the importer. With brands that have been built in recent years, there are: Alaska, Funiki, Zuiki, Nagakawa, etc.

In general, if you find the brand name strange, almost 90% of the goods are of Chinese origin.

– Made in China goods. All in China NOT ANYWHERE