FAQ

Older air conditioning systems run similar to a standard light. You turn on the light when you need it and turn it off when you don’t. These non-inverter type air conditioners turn on full capacity when they are required to cool or heat and turns off when the systems set point temperature is reached.Inverter systems are somewhat similar to an accelerator on a car, when more cooling or heating capacity is required the inverter ramps/speeds up the compressor matching the air conditioning load.

When the set point temperature is achieved the inverter ramps/slows the compressor down. This makes the inverter controlled space is more comfortable and uses less energy therefore a more economical air conditioner design.

• Maintains a smoother temperature.
• Less noisy.
• Temperature is reached quicker in both heating and cooling
• An increase of 30% in heating capacity
• Much smaller in size
• Up to 35% cheaper to run than non-inverter A/C’s.
• Designed to last – Studies have shown that compressors in an inverter systems last longer.

The heating capacity is the amount of heat, measured in Watts that the air conditioner can expel to the air conditioned space.

Also measured in Watts, the cooling capacity is the amount of heat the air conditioner can remove from the air conditioned space.

Generally speaking humidity is the measurement of moisture in the air. If the humidity is at a high percentage in the air conditioned space, you will usually feel less comfort and appear to sweat more than usual. As one of the functions of cooling the air conditioning removes moisture from the cycled air, by turning the unit on its cooling mode will reduce the humidity problem.

Reliability generally is governed by a few factors, quality of the system manufacture, quality of the installation process and the routine maintenance programs. As we have been involved in the air conditioning industry for over 30 years, with involvement with many brands. Our experience over this time is that Mitsubishi Heavy Industries equipment is of the highest manufacture and design quality in the industry. We recommend that only qualified trade persons are engaged to carry out the installation process and that best practices are always implemented. Regarding routine maintenance, we recommend that the unit’s filters are regularly cleaned and a reputable/qualified company carries out an inspection service at least annually.

Generally the filters are mounted behind or within an accessible panel, depending on model. Please see instruction on your particular model. Open the indoor access panel and remove the filters. The filter can be cleaned washing in water, brushing or hosing. The MHI wall mounted range has three levels of filtration. The conventional filter removes dust and particles. The Allergen Filter destroys various fungi and bacteria while the Photo catalytic filter deodorizes. The indoor fan has an Antibacterial treatment ensuring the air from the indoor unit remains clean and odour free.

Generally speaking the MHI air conditioning systems are flexible and can be installed in many situations. From individual rooms to multi zoned systems the MHI range has a model to suit. The multi-head inverter range has many indoor and outdoor models. These specialised systems allow up to five indoor to be operated by a single outdoor unit. The choice of indoor unit’s capacity determines the correct outdoor unit to be used. This enables the creation of indoor zones with different settings, such as a day zone for living areas and a night zone for bedrooms

The Air conditioning industry is highly regulated requiring a few Trade licenced for the complete installation process to be done. All air conditioners contain an ozone depleting substance and need to be handled by a licensed NRAC (National Refrigeration Air conditioning Council) installer. Some systems can require a special electrical connection this must be done by an A grade electrician. Also in some instances a Builder may also be required if any building modification are needed.

Mitsubishi Heavy Industries air conditioning system are one of the quietest on the market and boast extremely low noise output. But all operating equipment make noise and it is measured in a variety of ways by different manufacturers. The environment/situation in which the outdoor unit is located in has a great effect on the perception of noise.

Example: If the condenser is located in a paved courtyard and surrounded by concrete/bricks and wall cladding, the sound generated by the unit will not be absorbed and will bounce off the surfaces. This will increase the perception of air conditioners noise output. If the condenser is located in a soft environment such as a garden or with plenty of space around it, the sound emitted will be less obvious.

TIP: If possible do not install your air conditioners outdoor unit near your neighbour’s or your bedroom.

A back to back installation is the easiest and least expensive air conditioning installation. It generally only applies to wall mounted splits systems. It is where the indoor unit is mounted on the inside of an outside wall. The interconnecting pipework and electrical cables exit the outside wall behind the indoor unit and are connected to the outdoor unit mounted outside below and adjacent the wall. It is an install which uses the least amount of materials and labour.

The operating cost is generally the cost of electricity used to operate your air conditioning unit. This depends on a few factors, the size of the air conditioner, the systems installed environment, the amount of time it is used and also the set point temperature that the system maintains. With a heating set point of 28 degrees the system will heat for longer period of time than if the set point was set to 20 degrees, therefore dramatically increasing the cost to heat the air conditioned space. Reverse cycle inverter air conditioners are the most effective way to cool, and the most efficient way to heat your home or office today.

It depends on the size of the air conditioner and where the unit is to be installed. A typical back to back wall mounted installation could take as little as 3 hours and a large ducted system with multiple zones can take a few days. We can advise you of approximate installation times after our discussion with you.