What about air source water heaters? Is it recommended for general household use?

The current mainstream electric water heaters, gas water heaters and solar energy all have their own problems. Electric heating is slow, power consumption is high, and the volume is large. Gas heating is unstable and sometimes hot and cold, and the continuous working time is short. Solar installation is limited, and pipelines It is long, you have to get on the water by yourself, it is greatly affected by the weather, etc.

So what about air-energy water heaters? Please compare and analyze from the aspects of installation conditions, usage experience (noise, water volume, water temperature, convenience), energy consumption, service life, maintenance, price, etc.

Air-source water heaters are one of the current development trends. The development in this area is changing with each passing day. They are usually divided into wall-mounted integrated types, floor-standing integrated types and floor-standing split types. The former two are relatively technically difficult and save more installation space than the latter. However, the relative efficiency of utilizing air energy is not as good as the latter.

According to the four aspects that the questioner wants to ask:

1. Installation conditions.

The installation conditions of air-source water heaters are not strict. They can usually be installed in ordinary households. There are relatively few manufacturers that make wall-mounted integrated water heaters. They are usually 20 meters longer than ordinary electric water heaters (usually 60L, 80L). -30CM; the floor-standing integrated type generally considers the floor area, which is about 600*600MM, which is about the position of a floor tile; the split type needs to reserve an installation position similar to the outdoor unit of an air conditioner. All three require a floor drain and power socket to be reserved next to the water heater host. Ventilation should also be good;

2. In terms of usage experience

In fact, noise is not a big problem, because there are compressors and fans, and with good technology, the noise can reach 40 decibels. Even a slightly louder noise is acceptable.

Water heaters with heat pump functions are generally considered high-end products, and most of them come with a heat preservation program. This is actually the most economical thing about air-energy water heaters, that is, they basically do not consume much electricity for heat preservation (compared to ordinary electric heaters).

Water quantity and water temperature are a problem, because the heating power of air energy is generally relatively small, the smallest may only be 650W or even lower. The power of air energy above 100L is between 1-3KW, and the power between 1.5-2KW is the most purchased power by ordinary users. In this case, after a box of water is used up, the water return speed is relatively slow, usually more than 40 minutes.

Therefore, when heating, air energy does not contribute much to the speed. Water heaters that are allowed to use air energy and electric energy for heating at the same time will be better, but they will be slower than water heaters that use electric energy or gas energy at the same level, and the water output will be higher. It’s probably more than 20% less, I haven’t actually tested it;

3. In terms of service life

This cannot be guaranteed. It has a lot to do with the water consumption and water quality at the user’s home. Electric heating is prone to problems after 2-3 years of use, especially now that the water quality has deteriorated. There are also many electric water heaters that can be used for more than 5 years without any problems. At most, the thermal efficiency drops.

Few families can use water heaters for eight years. Generally, they gradually cannot bear the depreciation of water heaters during this process. In addition, the heating speed is very slow. As time goes by, after the post-80s and post-90s generations have become the mainstream of society, This trend will become more and more obvious.

So when discussing service life in this case, air energy has almost no special characteristics. The elimination of this kind of electrical appliance must first gradually cause problems, and then completely replace it. This time varies from person to person;

4. Maintenance and price.

Compared with electric water heaters, air energy heaters mainly have extra parts such as fans and compressors. The warranty time is usually 2 years or longer, but if it breaks down, repairs will be very expensive and account for 10% of the total price of the water heater. 1/5-1/4 is not unusual (in fact, it is not that easy to break).

Air-energy water heaters are usually more than RMB 500 more expensive than electric heaters of the same level. The higher the level, the greater the price difference. I have not studied the details, but air-energy water heaters can save more than 15% per year. It is basically not a problem. It’s hard to tell whether the cost difference can be recovered (the service life, maintenance costs incurred, mental loss fees, and purchase costs must be strictly calculated).

Overall, I think air-source water heaters are pretty good and will definitely get better and better in the future. Generally, in areas where the temperature is above 10° for more than 10 months of the year, I think they can be purchased.

Written by: Cindy from FUJIREJA GROUP
The Exporter and Manufacturer of Heaters since 2003
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