With the start of the summer season Enea, the National Agency for New Technologies, Energy and Sustainable Economic Development, provides a series of practical indications on the use of the air conditioner to cool one’s homes efficiently, with an eye to the air conditioning system to improve the comfort, save on your bill and safeguard the environment.
In particular, these are 11 practical tips to face the hot season without bleeding the bill, reducing the consumption of the air conditioner while maintaining high living comfort.
Attention to the energy class
The choice of air conditioner is a key requirement to reduce consumption and avoid nasty surprises on the bill. Regardless of the technology, models in energy class higher than A as, in addition to a reduction in CO2 emissions into the atmosphere, they consume much less. The annual energy consumption indicated on the energy label refers to 1400 hours of operation in heating mode and 350 in cooling mode to which is added the energy consumption in other modes such as standby.
For example, by choosing a model in class “A +++” we will be able to spend about 30 – 40% less on electricity than we would spend with a class “B” model.
In an air conditioner with controllo inverter, the rotation speed of the compressor is constantly adjusted and this allows for optimal performance in any conditions of use by adapting the cooling and thermal power supplied to the actual need. These models, particularly functional when you plan to keep the air conditioning on for many hours at a time, cost more than those equipped with on-off technology but the energy consumption and noise are lower, in the face of greater comfort within the served environments.
For the purchase of a heat pump air conditioner, if it is intended to fully or partially replace the old heating system, you can choose between: Home bonus, Superbonus, Ecobonus or Contoermo 2.0.
Pay attention to the location
During installation, it is important to locate the air conditioner at the top of the wall: the cold air tends to go down and will mix more easily with the hot air which instead tends to rise. It is absolutely necessary to avoid positioning the air conditioner behind sofas or curtains: the barrier effect blocks the diffusion of fresh air.
Do not cool the environment too much and pay attention to humidity
The legislation provides that during the summer season the internal temperature it must not drop below 24-26 degrees centigrade but, more often than not, two or three degrees lower than the outside temperature is already sufficient. Often to avoid the feeling of oppressive heat, the activation of the function “dehumidification”, As the humidity present in the air makes one perceive a much higher temperature than the real one.
Each room needs its own air conditioning
Installing a powerful air conditioner in the corridor hoping that it will refresh the entire house is useless: the only result will be to get a cold shot every time you cross the corridor going from one room to another, as it will be the only environment to be cooled.
Do not leave doors and windows open
The air conditioner cools and dehumidifies the environment in which it is installed by transferring heat and humidity to the outside. The entry into the room of “new” hot air forces the appliance to perform additional work to bring the temperature and humidity back to the required levels, with a consequent energy expenditure.
Insulate the refrigerant circuit pipes outside the home
To avoid unnecessary dispersion it is necessary thermally insulate the refrigerant circuit pipes present outside the house. It is also advisable to make sure that the external part of the air conditioner is not exposed to the sun and bad weather.
Use the timer and the “night” function
Thanks to these functions, it is possible to reduce the switch-on time of the appliance to a minimum and increase comfort. In addition, they allow you to switch the air conditioner on and off even remotely and keep it running only for the period of time when you really need it. There “night” or “sleep” function regulates the ambient temperature at night in order to respond to changes in body temperature.
Attention to cleaning and proper maintenance
The air filters and fans must be cleaned at the first seasonal start-up e at least every two weeks, because it is the place where molds and bacteria that are harmful to health most frequently lurk, including the bacterium Legionella which can be deadly. It is also important check the tightness of the gas circuit. It should also be noted that the legislation provides for the obligation of the system booklet and periodic checks for systems with a power greater than 10 kW for the winter ones and 12 kW for the summer ones.
Check-up of the house
Asking a technician to carry out an energy audit of the building is the first useful step in assessing the state of the ithermal insulation of walls and windows and the efficiency of air conditioning systems. The diagnosis will suggest the interventions to be carried out evaluating the cost-benefit ratio.
In addition to reduce costs for summer air conditioning of the rooms even up to 40%, the interventions are even more convenient if you take advantage of the tax deductions for the energy requalification of buildings, the Ecobonus, which allows you to deduct from IRPEF or IRES taxes from 50 to 85% of the costs incurred depending on the complexity of the intervention and the Superbonus, with which the deduction rate rises to 110 %.