Menai Heating install Danfoss Ground Source heat pumps.
Providing superb efficiency as well as a significant reduction on your energy costs, these heat pumps are highly energy-efficient and can cover up to 75% of your energy consumption using energy from your own land. In fact, savings can be so high that the cost of investment is paid back in just a few years..
Ground SourceGround heat pumps retrieve the solar energy stored in the ground via a hose that is dug down under your plot. The hose is coiled around your plot. Advantages Include: 1: No drilling needed. 2: Lower installation costs. 3: The coil in the ground maintains an even temperature throughout the year |
Bedrock SourceA bedrock heat pump uses the solar energy stored in the bedrock. Pipes are lowered through one or more bore holes (50-200 metres) into the bedrock. Advantages Include: 1: No great size of plot required 2: The hole in the rock maintains an even temperature throughout the year. 3: Little impact on your plot |

How it Works
- Brine* circulates in a collector coil and absorbs the heat energy from bedrock, ground, air or water.
- At the heat exchanger (evaporator) the tepid brine in the collector coil meets the ice-cold refrigerant** in the heat pump, which is then heated a few degrees and condenses.
- Then, a compressor compresses the now gaseous refrigerant. When the pressure exceeds the temperature rises. The heat that is then generated is transferred via a heat exchanger (condenser) to to your home’s heating system.
- Via a condenser, the refrigerant releases the heat to the heating system of your home. In connection with this the refrigerant is cooled.
- The refrigerant circulates and an expansion valve lowers the pressure and the refrigerant becomes cold again. The process begins again when the refrigerant meets the tepid brine from the collector coil.
- Heat pumps are built around the fact that gas that is compressed gets hot, and gas that expands cools. Remember a bicycle pump that compresses air, creating heat.
* The brine is a mixture that cannot freeze, for example glycol.
** Modern environmentally sound refrigerant are used, e.g. hydrocarbons and carbon dioxide.


Danfoss DHP-H is a very high performance heat pump, extremely efficient and reliable. The time taken to recharge the hot water tank after peak consumption has more than halved in comparison with old technology. In addition, it can produce - if needed - higher temperatures for your heating system. It also features an extra large hot water tank.
DHP-H Opti Pro can operate at even higher annual efficiency. Opti technology incorporates an intelligent control system that ensures the performance is always adjusted to the prevailing requirements and conditions. This enables it to work under the best conditions. It heats hot water faster and with less energy consumption than any other system on the market.
Danfoss DHP-L Opti represents Opti range in Danfoss offer. DHP-L Opti has a separate hot water tank. With its low height, Danfoss DHP-L Opti is ideal for use with low ceilings. It is intended to be supplemented with a separate hot water tank. An excellent choice if you need a lot of hot water or want to supplement an existing boiler.