Air to heat pump water heater purchase guide Air can be used as a new type of water heater, with its great advantage has attracted many customers stop. However, customers are very dazed at the time of purchase, do not know what kind of air to the water heater is really good product, because the product from the point of view, the brand seems to be no significant difference. Buy home air to water heater can start from the following aspects: First, the choice of brand service consumers before buying must understand the brand in the city's service quality and product quality reputation. Better brand product quality, after-sales service also has some protection, and can enjoy the home installation, long warranty, life-long maintenance, and a series of services. However, the brand in general is more expensive than non-brand, do not buy the most expensive, only the best buy, you can choose to choose home installation, long warranty, life-long maintenance, and a series of services! Second, the thermostat insulation function 1, thermostat function: thermostat function can guarantee the water bath will not appear suddenly hot phenomenon, but also to avoid the occurrence of burns. At present, the state of the hotel water heater safety hot temperature at about 55 ℃. The temperature of water used by people for bathing is generally more than 30 degrees. 2, thermal insulation function: If a water heater insulation does not have a good insulation function it is not a true sense of the water heater, water heater incubator at a temperature of 15-20 ℃, the water tank temperature of 55-60 ℃ Conditions, the 24-hour temperature drop can not exceed 4 ℃. So choose the water heater this point is extremely important, you can virtually save a lot of electricity. 3, magnetization or ion function: If the water heater with magnetization or ion activation function, improve the health function of the body be regarded as an unexpected harvest. Third, the choice of capacity of the insulation tank capacity to choose the main consideration of the family population and the amount of hot water and other factors. Generally 50-60 liters of water per person to choose from, such as family 5. We choose the incubator 250L or 300L on it, because there are guests to consider the Lunar New Year live or wash some vegetables with hot water in winter, etc., according to the actual situation to choose a larger capacity of the water tank is better. Fourth, the maintenance is easy to buy water heaters to take into account the maintenance is convenient, the average person prefer to choose one machine, from a professional point of view, one machine in the maintenance of the machine than the trouble, maintenance is also not after customers Do not face the matter. It is recommended that if your home water heater is not particularly small place, it is recommended to use split machine, the so-called split unit is the host and the tank is separate. One machine is the tank and the host installed in the same metal box. Fifth, the energy efficiency ratio The so-called energy efficiency is simple to say that the heat generated by the ratio of the amount of calories consumed. Since the average annual cost of air-to-air water heaters is indeed much lower than that of all other water heaters (including solar water heaters), its superb energy saving is also well-received, and many people are more likely to compare energy efficiency. Solemnly remind consumers here, must not use this indicator to determine the quality of water heaters, because many businesses deliberately exaggerate the energy efficiency ratio, such as a certain brand of domestic products that its energy efficiency can reach 6.0 This is because it is not based on a one-year average and is advertised based on the highest efficiency of water heaters in hot environments. The energy efficiency of the general industry are based on the average of one year to calculate. Most of Guangdong in the 15 ~ 20 ℃ as a standard, at this temperature the machine's energy efficiency is generally around 3.5-4.5. The best way to do this is to ask the merchant for the COP graph, fill in a box of water, and then power on the meter to determine if other identified energy efficiency is real. Practice is the only test of truth. Of course, this is a bit complicated. As for the amount of water generally all the brands are not much difference. In the purchase of key points to buy air to water heater products, the need to pay attention to several key points, but also related to the quality of several core components. Among these, the most important thing is: the compressor brand, tank liner, coil material and unit configuration, the need for extra attention. At the same time, a longer commitment to after-sales service, that is, manufacturers confidence in the quality of products reflects that users are in the process of product use worry-free protection. 1, Compressor: Compressor as the core part of heat pump, domestic compressor brand to Sanyo, Meizhi, Mitsubishi for the high quality, while the industry part of the domestic air conditioner compressor, unit performance and life expectancy can not be guaranteed. 2, coil: the best copper tube, high-purity copper tube to effectively guarantee the thermal conductivity and service life. Part of the industry using alloy copper, corrosion resistance and thermal conductivity were significantly less than copper. There are stainless steel coil, can effectively prevent corrosion. 3, liner: the crystal liner, also known as special steel liner as the best, leak-proof layer and pressure layer separation design, the inner wall of spray special synthetic polymer materials by high temperature treatment and integrated steel technology, the entire Gallon surface without any weld and effectively prevent scaling. Unlike ordinary stainless steel liner, anti-corrosion and high pressure capacity are stronger. The industry uses more ordinary stainless steel liner, weld rusty perforation, leakage hazards. 4, shell: the best material to import fluorine titanium plate, marine materials, more corrosion-resistant, to ensure that the product fade-free and paint off ten years, followed by 304 stainless steel; mostly metal paint industry, the current paint technology , Even the Mercedes-Benz, BMW paint still exists the problem of shedding. 5, unit configuration: the best 1: 1 gold configuration, high-power heating faster, effectively guarantee the life of the compressor. Some products in the industry for low-power mainframe with large-capacity water tank, so the small horse-drawn cart to keep the compressor running, a direct result of shortening the life of air to water heaters. 6, aftermarket: At present, the general air can make a warranty for one year for home-use machine and the construction machine is two years. Air to water heaters are durable consumer goods, the normal life is 12-15 years, if the warranty time is not long enough, two or three years to repair time, each to spend five or six hundred dollars, buy too cheap brand, use it expensive in the future , But also bring a lot of trouble, it is best to find manufacturers to buy better. In the purchase, but also need to consider the following considerations: 1, the appearance of inspection: the outer surface of the paint should be uniform, bright color, no loss, no dents or severe scratches, extrusion marks, etc .; shell to rust- Such as the 304 best. Almost a bit cold-rolled steel with domestic paint. This kind of box is cheaper, but easy to rust. 2, to prevent fake and shoddy products, manufacturers or manufacturers generally authorized distributor to buy the best. 3, attachments to be complete. 4, check the power plug: wiring to be solid, the line is of course harder to be better. Too small a power will be heated, even after a long period of time due to overheating and fire and so on. 5, power test, check the thermostat performance: look at the light is lit, the machine is humanized settings do not need people to often open normally closed. With or without overheating protection, defrost is good. 6, noise: air heat pump water heater noise as small as possible, generally below 55 dB.
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