Be sure to understand these before installing a new fan

Be sure to understand these before installing a new fan The most troublesome thing: the new fan requires indoor and outdoor air exchange, which requires opening holes on the wall or glass. The diameter of the holes in the market is basically concentrated on 150mm\120mm\110mm\100mm. Features of the hole: 1 hole-only the air inlet: similar to the exhaust fan plus the filter (disadvantages: no heat exchange, when the indoor and outdoor temperature difference is large, dare not always turn on the machine, especially in the northern region); 1 hole-divided into the inlet air And exhaust air: divide a hole into upper and lower parts, part of the exhaust air, part of the air inlet (disadvantage: the air outlet is too close, the exhausted air is drawn back as soon as it goes out); 2 holes-one Into a row: one hole to supply air, one hole to exhaust (cons: need to open two holes, the wall structure damage is relatively large) Installation difference: The hole is opened, and the machine needs to be installed. The installation is divided into wall mounting on the back of the machine and similar air conditioner side mounting, that is, back mounting and side mounting. Most machines meet the back-mounted mode and will not be elaborated. If the environment of your home is inconvenient for back-mounted and side-mounted, then there will be a question of whether the pipe goes out from the left or right of the machine. Almost all products on the market only support one way (unless you deliberately propose it Whether it’s left or right, you’ll get the machine for you) Air volume selection: Too much air volume does not make much sense, because you will not use the high air volume every day. The high air volume is only used during the period when it is just started. The key lies in the low and medium speeds. At this time, the noise is acceptable. Satisfy. For a 25-square-foot house, a machine with 60-80 air volume can be fully satisfied! Noise: A very important factor for the sense of experience, such as 30m³/h when it is silent at night. At this time, the machine is required to have almost no sound or the sound is very small, which means that the air volume and noise ratio are very important. Filtration efficiency: Almost all machines can achieve 95% or even 100% filtration efficiency at the beginning. This is not the key. The key is the dust capacity of the filter, that is, the area of the filter after it is spread out, with tofu block-like width 2 Don't think about the centimeters unless they are equipped with electrostatic precipitator modules. All machines will leak air, which is a series of wind, but the last gate is a high-efficiency filter. The air that comes out must be filtered. The machine with a large amount of air leakage has poor overall filtration efficiency, and users cannot easily measure it and feel it. The way of consideration: the filter is the safest and the effect is also great, but the cost is relatively high, how can the purchase price be four or five hundred a year, this is the most common price of the new fan filter, the so-called foreign is more expensive! ; The electrostatic dust removal method can filter out most of PM2.5, but it will produce ozone, you can check the harm of ozone. However, there are also electrostatic dust removal modules known as zero ozone. Full heat exchanger: It is a thing that exchanges temperature and humidity during the indoor and outdoor air circulation, which can save 60-70% energy (many products can not reach), it is also the core component of the new fan, and another core component is the motor Brands: Most of them are domestically produced or developed and manufactured in China, and this product is not a highly sophisticated product. It has a very simple structure. Don’t be obsessed with foreign brands. Most of the so-called foreign brands are fake foreign devils. The characteristics of the Chinese admiring the foreigners! Maintenance cost: If the new fan is equipped with an auxiliary heating module, the power consumption is a big hole, please ignore it; the new fan itself consumes very low power, the cost of electricity is one or two per day, the key is the consumables, a filter is always two or three hundred. What about pitman. Selling machines only makes money once, and selling filters is a lifetime business! So the cost of consumables must be considered!

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