---
title: The Efficiency Evolution of Absorption Technology
description: The improvement of natural gas absorption technology has led to constant increases in energy efficiency values for the different models.
---

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# [The Efficiency Evolution of Absorption Technology](https://www.robur.com/en-us/media/absorption-technology-efficiency-evolution)

 Written by [Robur Corporation](https://www.robur.com/en-us/media/author/robur-corporation) | Oct 29, 2021 1:22:36 PM

A key technology with a great potential for innovation.

The improvement of natural gas absorption technology has led to constant increases in energy efficiency values for the different models.

#### 1968

**ACC** Gas absorption chiller. ARKLA (Arkansas Louisiana Gas Co.) introduces the first water-ammonia absorption units, with 300,000 pieces sold.

#### 1991

Robur Corporation was established to acquire absorption technology from Dometic, a company of Electrolux group.

#### 1998

**ACF** The gas efficiency in absorption units was improved by 34%. Efficiency was becoming a crucial element.

#### 2002

**GAHP-W LB** was introduced to the market: a worldwide innovation. This GAHP version has put Robur into the high efficiency heating market with an efficiency much higher than electric heat pumps and boilers.  
**GAHP-AR** High efficiency Gas Absorption heat pump for alternative heating or cooling. The first reversible Gas Absorption Heat Pump in the world.

#### 2004

**GAHP-A** High efficiency Gas Absorption Heat Pump for heating. Heating efficiency higher than condensing boilers. The most efficient product in gas heating sector worldwide.  
**ACF-HR** The unit with heat recovery was developed and introduced to the market. The heat recovery for production of domestic hot water at temperature up to 85 °C makes the unit very competitive: the total efficiency of the unit is up to 173%.

#### 2005

**GAHP-WS and GS** High efficiency Gas Absorption Heat Pump for simultaneous production of hot and cold water, ideal for geothermal systems and process applications.

#### 2008

Modulating and condensing Gas Absorption Heat Pumps.  
**E3 Solution** Hydronic heating system with modulating condensing Gas Absorption Heat Pumps.

[View full post](https://www.robur.com/en-us/media/absorption-technology-efficiency-evolution)

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