Space Cooling  »  Unitary (DX) Air-conditioners

Summary

This is a reverse cycle (heating and cooling) capability split DX AC unit with very high efficiency achieved primarily through inverter control. The unit has a 3.5 kW cooling capacity and 4.7 kW heating capacity. It achieves high efficiency through energy savings features such as:

• Inverter control and a high efficiency heat exchanger
• High efficiency controls
• R410A high pressure refrigerant
• Low energy LED display

Energy and cost saving data

Other information
This model is one of the top performing product in the China register of the independent high efficiency product registration programme TopTen (see www.topten.info) in the section for inverter driven air conditioners of wall mounted (split) type, capacity range 2.8 kW to 4.5 kW. The use of highly efficient heat exchangers and an inverter make this a very efficient model, similar to ones on sale in Japan.

The TopTen programme carries out independent research of product characteristics and submits around 30% of registered products for third party testing every year to ensure data reliability.

Summary

This is a reverse cycle (heating and cooling) capability split RAC with very high efficiency achieved primarily through inverter control. Includes dehumidification capacity of 3.3 L/hour.
The non-ducted split unit has a 5.6 kW cooling capacity and 7.4 kW heating capacity. It achieves high efficiency through energy savings features such as:

• Inverter control and a high efficiency heat exchanger
• R410A high pressure refrigerant

Energy and cost saving data

With annual electricity savings of € 11, the low electricity prices in China make energy efficiency improvements challenging.

Other information
This model is the top performing product in the China register of the independent, high efficiency product registration programme “TopTen” (see www.topten.info) in the section for inverter driven air conditioners of freestanding split type, capacity range 4.5 kW to 6 kW. 

The TopTen programme carries out independent research of product characteristics and submits around 30% of registered products for third party testing every year to ensure data reliability.

Summary

This is a reverse cycle (heating and cooling) split RAC with very high efficiency achieved primarily through inverter control. It has a good claim at being the most efficient product in its class in Europe – it is the most efficient split air conditioner <4kW capacity class of the TopTen project’s ‘Best of Europe’ product register (see www.topten.eu).

The unit has a 1.8 kW cooling capacity and 2.3 kW heating capacity. Also achieves COP 6.13 in heating mode. It achieves high efficiency through:

• DC inverter control (variable speed drive) of both compressor and fans
• R410A high pressure refrigerant

Energy and cost saving data

Annual electricity savings for cooling only would be € 89 and yield a payback period of 8 to 12 years. However, assuming an additional 1 500 hours for heating would yield additional savings of around € 193 per year would reduce the payback period to between 2.7 and 3.9 years.

Notes: Unit price is € 1,400 and an allowance of 30% has been made for installation cost. TopTen Europe estimated kWh figures based upon standard cooling season component of annual heating/cooling cycle calculation for Italy, with 500 hours of cooling per year. The quoted heating COP of the efficient and inefficient units from TopTen Europe were 6.13 and 3 respectively.

Other information
This model is the top performing product in the EU register of the independent high efficiency product registration programme TopTen (see www.topten.eu) in the section for air conditioners of split type of capacity <4 kW. This “S-series” of high efficiency products from Hitachi has won a number of awards, including from the Japanese Government and UK heating industry’s ‘Air conditioning product of the year’ in 2010.

The TopTen programme carries out independent research of product characteristics and submits a sample of registered products for third party testing to ensure data reliability.