To answer these questions, first make clear the difference between the two. Both are dual-use, * the difference is that the former focus on heating, "heating + refrigeration" design; And latter center of gravity is in refrigeration, heating is auxiliary function only.
A lot of people can think so, install changes in temperature air conditioning, summer can refrigerate, winter still can warm oneself, kill two birds with one feather, much cost-effective. But in practice, users are often disappointed. Because cold and warm air conditioning not only power consumption, and heating is not to force, comfort is not high."The main function of air conditioning is refrigeration, heating is only its second function, play an auxiliary service role, heating is not to give power, is also natural. Adding the two functions together only lowers the COP value of the product, resulting in energy waste.
Numerous tests showed that the COP value of air-conditioners that only cooled was much higher than that of warm and cold air conditioners. Heating in winter, the temperature outside is relatively low, and it is hard to avoid frost and frost on the outdoor main engine. When the machine starts, a large part of energy is spent on defrosting. Therefore, whether it is split or central air conditioning, heating effect is not good. In addition, air conditioning heating is blowing hot air type, thermal expansion and cold contraction of the cause, the indoor cold air sinking, the feet are often cold air, and the air conditioning blowing out of the hot air, can only wander in the head, not down to the feet. Standing on the floor makes people feel less warm.
Different from the air conditioning system, the air heating and cooling heat pump adopts the design of "heating + cooling", which can give attention to both heating and cooling, so that both aspects can well meet the user's expectations.