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Response to Climate Change

Promoting the Use of Heat-Pump Type Space and Hot Water Heaters

Response to Climate Change


In recent years, growing environmental awareness has led to the spread of highly energy-efficient space and hot water heaters. In Europe in particular, which has a relatively cold climate, space and water heaters account for more than 80% of household energy consumption, thus there is an ongoing shift from conventional combustion-heat source equipment to heat-pump heating that emits less CO2.

Daikin is engaged in the development and promotion of hot water heaters and space heaters using highly energy-efficient heat pump technology while striving o increase comfort and reduce CO2 emissions.

Heat-Pump Technology

Less than 1/2 of the CO2 Emissions Compared to Burning Fossil Fuels

The heat pump system is a technology that cools the air and heats water by extracting the heat stored in the air. Compared to carrying out space and water heating using methods in which fossil fuels such as gas, oil, and coal are directly burned, heat pump systems emit less than half of the CO2.

Heat-Pump: Mechanism and Effect

Heat-Pump: Mechanism and Effect

Related information

Heat Pumps

Promoting the Use of Heat-Pump Type Space and Hot Water Heaters

Bringing More CO2-Reducing Heat-Pump Type and Gas Combustion Type Space and Hot Water Heaters to the European Market

Daikin is engaged in the development and promotion of hot water heaters and space heaters using energy-efficient heat pump technology.

Policies on the use of renewable energy have been promoted in Europe since late 1990s. In January 2009, the heat pump was recognized in the EU as technology that captures renewable energy and heat pump heaters are being recommended as part of this target. A building taxation system based on CO2 emissions standards has come into effect in London in 2019 and in Germany in 2021, with the gradual switch from gas boiler to heat pump in progress.
For the European space heating market, we will expand the product line up and carry out meticulous marketing efforts as we make our heat pump and gas-combustion-type products more energy efficient in the market around the world and thus contribute to reducing CO2 emissions.

Examples of promotion activities of heat pump and gas-combustion type space and water heaters in Europe

Items Details and results of activities
Daikin Altherma heat pump space and water heater Development of models for the European market (2006) and expanding the product lineup as needed since then
Development of hybrid products combining heat pumps and boilers for extremely cold regions (2014)
Development of a small-capacity hybrid 4 kW space and water heater and space and water heaters that utilize geothermal energy intended for use by major home builders, local municipalities, and public power companies
First in the industry to release models using R-32, a refrigerant with low global warming impact (2018)
Regained top share (2019)
Introduction of R-32 in the large capacity class of Monoblock which requires no refrigerant piping connection process (November 2020)
Released Water Plumbing Kit, which simplifies on-site plumbing construction (launched in France in May 2020 and within EU in July 2021)
High energy efficient gas combustion space heaters Focused on developing since fiscal 2014 in aims to expand options in energy efficient models
Promote switch to energy efficient models based on need

Provide suggestions on switch to the best suited energy efficient model based on usage and size

  • Switch from space heater with big environmental impact to heat pump
  • Switch to hybrid type products that automatically selects between heat pump and gas combustion for equipment with moderate impact
  • Switch to energy efficient gas combustion heating for equipment with a small environmental impact
Expand product line up in accordance with the multiple climate conditions and market needs in Europe Development of a R-32 high temperature discharge type that can replace oil-fired boilers in existing building markets and a R-32 geothermal heat source type suited to cold regions (fiscal 2019)
Activities at Daikin Asahikawa Laboratory (Asahikawa, Hokkaido) Developing new space and water heating systems that will offer comfort and energy efficient for the world's extremely cold regions (since December 2013)

Daikin Hybrid Altherma

In Europe, we sell the Hybrid Altherma, which automatically switches from heat pump to gas combustion mode when outside temperature drops significantly, thus providing the most efficient and economical heating possible. This product offers a more-than 35% reduction in CO2 emissions compared to gas combustion-type products.

In fiscal 2019, we released system that allows heat pump outdoor units to be retrofitted on existing boilers using Hybrid Altherma. This enables energy saving using existing equipment in place.

Daikin Altherma Hybrid Heat Pump

Promoting Residential Water Heaters and Floor Heaters in Japan

In Japan, water heaters account for 25% of all residential electricity consumption, thus there is a need to switch over to systems with minimal environmental impact to control global warming.

Daikin's heat-pump technology is incorporated into ECOCUTE heat-pump water heaters and Hot Eco-Floor heat-pump hot-water floor heaters. The latest ECOCUTE model reduces annual energy consumption approximately 23% by improving heat transfer performance with a highly efficient water heat exchanger that facilitates agitation in the water pipe shape and an air heat exchanger with a uniquely shaped waffle guide fin.
In fiscal 2018, we released a residential hot water heater that can communicate with a home energy management system (HEMS), which allows users to save energy in the home. This hot water heater promotes the use of renewable energy and promotes the use of excess electricity that is generated from solar power in newly built zero-energy homes (ZEHs).

In this way, new products incorporating the latest technologies have greatly improved energy saving performance compared to past products, but if energy savings can be improved even in existing equipment, energy consumption can be reduced substantially throughout the entire market with the commercialization of replacement heat source units. In recognition of high energy savings and the lower introduction costs and shorter construction time compared to system replacement, Daikin received the Chairman Prize of Energy Conservation Center, Japan (ECCJ) in the Energy Conservation Grand Prize for fiscal 2017.

Energy Conservation Grand Prize

Promoting Highly Energy-efficient Products Including the MEGA-Q Large-Scale Heat-Pump Hot Water System in the Japanese Commercial Market

In Japan, we are marketing space and hot water heaters for the commercial market as well using highly energy efficient heat-pump technology.

In November 2012, we began selling a new model of the commercial heat-pump water heating system (MEGA-Q) for large-scale facilities such as hotels and hospitals, which we first introduced in April 2009. Compared to gas-combustion hot water heaters, this new model releases about 60% fewer CO2 emissions and reduces running cost by about 60%. Facilities like hospitals and golf courses require changing volumes of hot water daily, and Daikin meets this challenge with a hybrid hot water supply system that provides hot water during base periods with MEGA-Q and that switches to boiler operation during peak periods. In addition to commercial applications such as these, in the near future we will come out with products for processes in factories that must respond to environmental requirements.

Comparison of Annual CO2 Emissions: MEGA-Q Large-Scale Commercial Heat-Pump Water Heating System versus Combustion-Type Boiler

Comparison of Annual CO2 Emissions: MEGA-Q Large-Scale Commercial Heat-Pump Water Heating System versus Combustion-Type Boiler

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