What to consider when choosing an air conditioner
When choosing an air conditioner, it is not enough to focus on the area of the room. It is necessary to take into account the height of the ceilings, how many hours a day the sun shines through the windows, how many people will be in the room at the same time, what heat-generating appliances will be there. These details will help determine the desired performance of the air conditioner.
Air conditioner performance is measured in kW (kilowatts) or BTU (British Thermal Unit). Residential air conditioners most often use the BTU designation. Its power varies between 7,000 BTU and 24,000 BTU, the first is suitable for rooms up to 20 square meters. m, the latter – for rooms up to 70 square meters. meter.
What air conditioning to take: inverter or non-inverter
These types of air conditioners differ in features. The inverter keeps the temperature down to plus or minus 0.5 degrees Celsius, and an air conditioner without an inverter can allow a delta of up to 2 degrees, which is perceptible to a person. Inverter air conditioners are quieter than non-inverter (on-off). Inverter air conditioning is more energy efficient: 30% savings in electricity consumption.
Inverter air conditioners work to heat at lower outdoor temperatures. The basic non-inverter works to heat up to -7 degrees outside, and the inverter – up to -15. There are inverter air conditioners that can not only effectively cool the room in summer, but also heat it even at -30 degrees outside – these are the so-called heat pumps.
At the same time, the price difference between inverter and split on-off systems is getting smaller every year: more and more people are buying inverter air conditioners in the world, which means that manufacturers are optimizing their costs for them.
Wall or mobile air conditioner
A mobile air conditioner has two advantages compared to a wall-mounted split system: it requires no installation – just plug it into an outlet and the device works. And it can be transferred. There are also two drawbacks: it’s noisier than a wall-mounted one. And you need to bring warm air outside, for this the mobile air conditioner has an air duct in the kit. In residential buildings, this is difficult to do, because the outlet must be airtight.
The split system has a broader functionality: air purification, heating work. But it requires installation, in season the queues can be from two weeks to a month.
Why you shouldn’t open the window when the air conditioner is on
If you open a window, there are two dangers, Petrov explains. First: the air conditioner may not be able to cope with a large flow of hot air coming from the street. And the temperature in the room will rise. The second – if the air conditioner hangs next to the window, where hot air constantly comes from, it begins to “think” that it is very hot in the room and works at its maximum, cooling the room and people who are in it as much as may be possible. People can simply be impressed. Also, at this point, power consumption increases considerably.
Is one air conditioner enough for the whole apartment?
Yes, if not quite an ordinary split system. The task of cooling or heating several rooms in an apartment at the same time is solved by channel split systems or multi-split systems. A multisplit is a domestic air conditioner that has an outdoor unit and several indoor units. The multisplits are only inverter.
The multi-split market is growing now: many developers are designing houses with alcoves to install outdoor units of air conditioners, leaving space for a single outdoor unit for the entire apartment. So, you can’t put ordinary divisions. Therefore, there is only one solution: multi-split.
Such a system is more expensive than various air conditioners, but there are nuances. You can buy an outdoor unit, the power of which is less than the total power of all indoor units by 30-50%. Therefore, you can save money if all the indoor units are not working at the same time.
The duct unit is a kind of indoor unit. It can be part of a multi-split. Or as part of a split system. For example, we put a multi-split in an apartment – you can hang ordinary wall-mounted indoor units in the bedroom, and put a duct indoor unit in the living room, from such a unit you can distribute air throughout the room. room in the space above the ceiling with air ducts and bring it to the ceiling through the vents. Such an air conditioner is enough for a room of 170 square meters. meter.
Do I need to change the air conditioning filters and how often?
In the indoor unit of the air conditioner, meshes are installed that filter the air from coarse dust. These meshes can be washed by the user. The panel is opened, the grill is removed and washed with water or wiped.
There is a heat exchanger inside the air conditioner, condensation forms on it. And mold and other microorganisms grow where there is high humidity. So, microorganisms grow in the heat exchanger. To eliminate them, it is necessary from time to time, preferably once a year before the season, to clean the indoor unit. This is done by a professional installation company.
How much electricity does home air conditioning “eat”?
No. Energy is spent on pumping refrigerant between the indoor and outdoor units. Maximum air conditioning consumption per 20 m2. m – 600 watts per hour, and for the inverter – 300-400 watts, which corresponds to the consumption of a computer. If the air conditioner consumes 600 W per hour, it will consume 6 kW per night of operation and 180 kW per month (30 days). If the price of 1 kW per hour is 6 rubles, then 1 thousand rubles will be added to the monthly payment for electricity.
how much does air conditioning cost
A new air conditioner, but last year’s series on sale, can be bought for 15 thousand rubles. Prices for devices of the current season start from 20 thousand rubles. The upper price segment is 50-70 thousand, Japanese brands – from 70 thousand.
From the history of the problem
How they cooled BC
Photo: Chelyabinsk State Historical and Archeological Museum-Reserve “Arkaim”
In the late 1980s, in the valleys of the Bolshaya Karaganka and Utyaganka rivers in the Chelyabinsk region, an ancient settlement was discovered quite by accident. It is now known as Arkaim. Then it turned out that there were quite a few such villages throughout the region. The people who lived there were attributed to the Sintashta culture, and the area itself was given the name “Country of Cities”.
It’s an absolutely fantastic culture. Hey, think about it! – about 40 centuries. Our ancestors, of the same age as the builders of the Egyptian pyramids, built cities with rainwater, pipes and sewers, had developed metallurgy and, judging by dating, were the first to devise a chariot.
They also invented air conditioning! The furnace was connected by earth pipe to a shaft, and the shaft was connected to a vaulted storage. Have you ever stood by a well and felt the coolness emanating from it? Then the Arkaimite shaft created enough traction to melt the metal. No fur. The pipeline from the well to the storage cooled the air in the latter, that is, a refrigerator was obtained. And such a design was in every dwelling!