Eco-friendly, Energy Saving Design & Enhanced Installation Flexibility! Futher improvements in energy efficiency,
environmental performance and installation flexibility are achieved.

"A low carbon society" in the ultimate sense would be a energy conservation society that emits carbon dioxide (CO2) only in an amount. To achieve this goal, it is imperative to reduce energy consumption and CO2 emissions for the future of the air conditioning industry. Aisin successfully developed a highly effective outdoor unit; E1-series by optimizing the design of major components such as the gas engine, compressors, and heat exchangers.

Further improvements in energy efficiency and environmental performance are achieved.
Installation flexibility is also expanded to meet diversifying installation requirements.

By adopting newly developed variable displacement compressors and controlling the engine speed optimally, the E-series achieved lower running costs and CO2 emission reductions.

Reduce fuel gas consumption and CO2 emissions

Fuel Gas consumption

Reduce fuel gas consumption by improvement of partial load efficiency.
Fuel gas consumption
  • Outdoor unit: P560 building-multi model
  • Cooling/heating average
  • Connected indoor units capacity: 50%
  • The fuel consumption of 2000 model is assumed as 100.

Newly developed variable compressors *The example above is based on the data collected in Japan.
This value in above example may vary depending on the region and country.

CO2 emissions

Lower fuel consumption also reduces CO2 emissions.
CO2 emission <Calculation premises>
Outdoor unit:
P560 building-multi model
Annual efficiency:
Average of efficiency at rated output and when 50%capacity indoor units is connected (cooling/heating average) Assumed electricity consumption when 50% capacity indoor units is connected equals at rated capacity load
Operation time:
1,000hrs/year(Cooling:600hrs, Heating:400hrs)
City gas (13A type)
CO2 emissions factors:
Electricity; 0.69kg-CO2/kWh *
City gas; 0.0509kg-CO2/MJ *
*Japan Gas Association, "Factors for proper evaluation of CO2 emissions and its reduction from electricity use", 2008

Compact & Light weight design

Significant structural downsizing achieved by optimum designs of the major components such as the engine, compressors and heat exchangers, which also expanded installation flexibility.

External dimentions

Approx 77% smaller than ever! (Length:mm)

Weight (P710)

Approx. 135kg Weight loss *The value indicated above is for South Korean standard specification only.

Speedy heating!

The GHP offers speedy heating by utilizing the waste heat from engine exhaust. By adopting the clutch-less mechanism, the E1 series further ensures speedy heating.

When heating

When heating <Image>
*The amount of time required for heating varies according to the outside temperature.

On-the-balcony installation is possible

The unit can be located on a balcony on each floor by setting the outdoor fan external static pressure mode setting to high.
It also corresponds to high-rise building installation by locating the unit on a balcony landing on each floor. On the balcony installation is possible
  • The specified working space must be provided for maintenance service.
  • A duct must be connected to the top of the outdoor unit when installing.

Reducing floor space requirements for maintenance service can save the installation space.

Space required for maintenance service

The space required in front of the unit for maintenance service has been reduced from 1000mm to 700mm!

Space required for maintenance service

Extended pipe length up to 60m

A Maximum pipe length from the first branch to the most distant indoor unit is extended from 40m to 60m.

System example

The previous D1 series requires 2 outdoor units to meet installation requirements because the maximum distance after the first branch exceeded 40m.

With the E1 series, multiple unit installation is not required!

With the E1 series, multiple unit installation is not required
The initial cost (equipment & installation cost) can be reduced.
Ex) Equipment cost: approx. 20% decrease
The example above is based on manufacturer's suggested retail price and compared the D series: P280 and P450 multiple installation case with the E series: P710 single unit installation case.
Maintenance costs can be reduced by approx. 43% (from 2 to 1 unit).
Electricity consumption during heating can be reduced by approx. 20%
*The example above is based on the data collected in Japan. This value in above example may vary depending on the region and country.