An air to water heat pump is usually placed outside at the side or back of a property, and takes heat from the air and boosts it to a higher temperature using a heat pump. A heat pump works a bit like a refrigerator in reverse. The process consists of an evaporator, a compressor and a condenser. It absorbs heat from the outside air and the heat pump compressor then increases the temperature of that heat further to create useful heat. This heat is then used to heat radiators, underfloor heating systems or even warm air convectors and hot water in your home.  The pump needs electricity to run, but the idea is that it uses far less electrical energy than the heat it produces.

The heat pump can take three to eight days to install depending on the complexity of the system and if you need to replace any radiators in your property.

Heating equipment including heat pumps should be serviced at least once a year. The best scenario is to have the heating system checked in the Autumn. Why should I have my equipment serviced? Annual servicing includes cleaning the system, checking for any problems or potential problems and adjusting for Peak efficiency. The benefits include:

• Increased dependability.
• Find potential problems and fix them quickly.
• Provide maximum efficiency which lowers energy costs.
• Prolongs the life-span of the equipment.
• Maintains safe and healthy operation.
• Can help to protect the environment.
• Drastically reduces the chance of a break-down which usually happens at night or on weekends when repair rates are higher.

Yes,  that is possible. Underfloor heating is the best match for a heat pump system but it is not always possible to install underfloor heating through the whole of the property. Please make sure that you install special low temperature radiators in your new-build project, Kereen can advise you what is exactly required. For older properties where there is no opportunity to install underfloor heating at all, you can use a high-temperature heat pump and they can accommodate more traditional steel radiators.

This is a difficult question to answer as it depends mainly on the state of your property (insulation / Windows!) and the required heat (how warm do you want it to be!). However on average a well-insulated home could expect savings of up to 60% on their energy costs per year. After a quick assessment Kereen is able to do a simulation for your property which indicates how much savings can be made.

Heat pumps are designed to run for long periods of time. This means it is usually cheaper and warmer to leave them running during the day, compared to only heating in the morning and evenings.

Air source heat pumps take warmth from the air outside (even when it’s freezing) and use it to heat the home. Heat pumps can take getting used to as they operate differently to other forms of heating. They are designed to heat to low temperatures over a long period of time, rather than quickly providing heat when turned on

At night: Lower the temperature to around 10-15°C, and then set it to slowly increase in the morning so that the room is a comfortable temperature when you wake up.

Away for a day: Just leave the system running as usual.

Away for a week: The system should have a ‘holiday’ or ‘frost protection’ setting on the control panel, which will lower the room temperature while you are away. This will also prevent the pipes freezing if you go away in cold weather.

During the summer: Your heat pump might have a ‘summer’ mode, or you can simply turn down the room thermostat. This means the heating will not come on, but you will still get hot water. You can raise your heating temperature again slowly as the autumn approaches

Combined heat and power (CHP) is an efficient and clean approach to generating electric power and useful thermal energy from a single fuel source. CHP is used either to replace or supplement conventional separate heat and power (SHP). Instead of purchasing electricity from the local utility and burning fuel in an on-site furnace or boiler to produce thermal energy, an industrial or commercial facility can use CHP to provide both energy services in one energy-efficient step.

Every CHP application involves the recovery of otherwise-wasted thermal energy to produce useful thermal energy or electricity. CHP can be configured either as a topping or bottoming cycle. In a typical topping cycle system, fuel is combusted in a prime mover such as a gas turbine or reciprocating engine to generate electricity. Energy normally lost in the prime mover’s hot exhaust and cooling systems is instead recovered to provide heat for industrial processes (such as petroleum refining or food processing), hot water (e.g., for laundry or dishwashing), or for space heating, cooling, and dehumidification. In a bottoming cycle system, also referred to as “waste heat recovery,” fuel is combusted to provide thermal input to a furnace or other industrial process and heat rejected from the process is then used for electricity production.

CHP is a form of distributed generation, which is located at or near the energy-consuming facility, whereas conventional generation takes place in large centrally-located power plants. CHP’s higher efficiency comes from recovering the heat normally lost in power generation or industrial processes to provide heating or cooling on site, or to generate additional electricity. CHP’s inherent higher efficiency and elimination of transmission and distribution losses from the central power plant results in reduced primary energy use and lower greenhouse gas (GHG) emissions.

CHP reduces energy costs for the user. · CHP reduces the risk of electric grid disruptions and enhances energy reliability for the user. This is particularly useful for hospitals, research institutions, or industrial facilities where electric power outages are particularly disruptive and costly. · CHP provides predictability in the face of uncertain electricity prices

PV or photovoltaic solar panels turn daylight into free electricity. These operate completely differently from solar hot water collectors. When daylight strikes a PV solar panel, a DC electrical current is generated. ... This DC current then travels down to an inverter, which converts the electricity from DC to AC.

The amount of electricity generated annually will depend on a range of factors including the hardware chosen, size of system, the geographical location and the direction in which the panels are installed. With the most common silicon solar panels typically 1 sq. m of panels will generate ~150W of power on a clear sunny day (that’s enough to power a laptop computer). A home solar PV system sized at 20 sq. m (~3kW) would generate around 2,600kWh of electricity a year if well-located, over 40% of the typical annual electricity demand of an Irish home.

Yes, solar PV systems will still generate electricity when there is daylight, so they will still function on overcast days in Ireland. a home solar PV system sized at 20 sq. m (~3kW) would generate around 2,600kWh of electricity a year if welllocated, over 40% of the typical annual electricity demand of an Irish home.

Planning permission is normally not required, but please make sure you always check with your local authority and planning department. This is especially important if you live in a listed building or a conservation area.

Solar PV systems installed in a domestic setting under 12 sq. m (and representing less than 50% of the total roof area) are exempt from planning.

Adding a battery to your solar PV system means the battery will charge when the PV system is generating electricity which isn’t being used, and then discharge when you need it next (normally that evening/night). A battery can increase the percentage of solar PV electricity you use in your house

PV systems are low-maintenance. The most important aspect is to monitor the performance of your system regularly. This could simply be a routine check of your inverter to see that the system is operational  and that the energy meter is increasing each day. At Kereen, we will advise how much the PV system should generate each year, and see that your system is generating close to that amount.. The solar panels themselves are extremely robust, but consideration should be given to cleaning them every few years to maintain their performance. If you live near the sea or a main road more regular cleaning may be necessary.

Air conditioning systems work by moving heat from inside your premises to the outside. In a central air conditioning system air is drawn into the ductwork system through the return air system. Installed in the return air ductwork is an evaporator coil. This coil is connected to the condensor, the unit that is outside your home, by copper tubing. The refrigerant is then pumped from the condenser to the evaporator coil. As the refrigerant passes through the inside of the evaporator coil, warm air from inside your home passes over the outside of the coil. Because the refrigerant is cooler than the warm air, the refrigerant absorbs heat from the air. The refrigerant is then sent outside to the condenser unit. When the warmed refrigerant is in the condenser unit it is compressed by the compressor; the compression of the refrigerant causes it to boil. As the refrigerant boils it gives off the heat it picked up from inside your home. The refrigerant is then passed through the coil in the condenser unit where it gets cooled again and is ready to go back inside to pick up more heat from your home. As this whole process is going on, the temperature and relative humidity in your premises are both lowered. The relative humidity level drops because cooler air cannot hold as much moisture. As the air cools, it gives up some moisture and it gets collected in the base of the evaporator coil and is then drained away.

A quick and easy rule of thumb to use for sizing an air conditioner for a room or house is the square foot method. This formula is used only for a quick approximation and is based on certain guidelines regarding insulation R values, shading, ceiling height, construction materials, windows, doors, purpose of use and occupancy. In layman's terms, 400 square feet of residential living space in a desert climate requires 1 ton of cooling capacity based on adequate insulation, 8' ceiling height and tight windows and doors. To calculate your requirement using this method divide your total square footage of living space by 400. The resulting answer is the number in tons of air conditioning capacity required.

Air conditioners can last for more than 10 years if they’re well looked after. However, you’ll need to have your air conditioning unit serviced regularly to identify any potential issues in advance of them becoming a fault. We also advise regular cleaning and/or changing the air conditioning filters every so often to ensure maximum efficiency.

Ventilation is the process by which ‘clean’ air (normally outdoor air) is intentionally provided to a space and stale air is removed. Ventilation is where the air from outside is pulled and mixed with the air from inside. This air is then released back, resulting in a room with slightly purer air. The aim here is not to change the temperature of the room but to remove pollutants and bad smells through purification.

The major difference between air conditioning and ventilation is the fact that air conditioning does not use an external source to function, in most cases. Instead, air conditioning takes the air already inside a space to heat or cool it, depending on your settings. It will then recycle the air back into the room. This will be continually repeated until you have either a warm or cold room.

Ventilation, in comparison, works on a much less of a cycle basis. A ventilation system works to purify the air inside the workspace. The air comes from outside, mixes with indoors air and then removes air at the same time. This is a different cycle of extraction and replacement. For workplaces with air pollutants, strong smells or even few windows, this is an ideal setup as it allows better overall airflow.

Underfloor heating can be used in any size property: whether you are building an extension, a new home or retrofitting your existing home, Kereen Heat Pumps and HVAC will design your UFH to be a perfect fit that suits your needs.

When underfloor heating is used in a property or building it can have significant savings for the owners in comparison to the older traditional oil heating system using radiators, in fact you can save up to 30% on running costs and when underfloor heating is paired with a Heat Pump.

Underfloor heating pipes can be laid under any floor covering in your home or property. Stone, Marble, polished screed and tiles are the most conductive floor coverings.  However this system also works extremely well using engineered timber flooring, laminates and carpets where a special underlay is used.

Kereen Heat Pumps and HVAC will design your UFH system to give you full control over your heating for each room in your home.  Individual room or zoned area temperature control and scheduling thermostats can be installed, that give you the power to set basic heating schedules and switch to holiday mode when you are going away.  Thermostats can also be controlled at the touch of a button from your smart phone or any lap top/PC anytime or anyplace day or night.

The most efficient and cost effective way to heat your home is the combination of UFH with an Air to Water Heat Pump. Underfloor heating uses 40℃ heat, when combined with a low temperature heat pump can provide a constant ambient heat 24 hours a day, while ensuring you have continuous hot water on demand.

An air to water heat pump is usually placed outside at the side or back of a property, and takes heat from the air and boosts it to a higher temperature using a heat pump. A heat pump works a bit like a refrigerator in reverse. The process consists of an evaporator, a compressor and a condenser. It absorbs heat from the outside air and the heat pump compressor then increases the temperature of that heat further to create useful heat. This heat is then used to heat radiators, underfloor heating systems or even warm air convectors and hot water in your home.  The pump needs electricity to run, but the idea is that it uses far less electrical energy than the heat it produces.

The heat pump can take three to eight days to install depending on the complexity of the system and if you need to replace any radiators in your property.

Heating equipment including heat pumps should be serviced at least once a year. The best scenario is to have the heating system checked in the Autumn. Why should I have my equipment serviced? Annual servicing includes cleaning the system, checking for any problems or potential problems and adjusting for Peak efficiency. The benefits include:

• Increased dependability.
• Find potential problems and fix them quickly.
• Provide maximum efficiency which lowers energy costs.
• Prolongs the life-span of the equipment.
• Maintains safe and healthy operation.
• Can help to protect the environment.
• Drastically reduces the chance of a break-down which usually happens at night or on weekends when repair rates are higher.

Yes,  that is possible. Underfloor heating is the best match for a heat pump system but it is not always possible to install underfloor heating through the whole of the property. Please make sure that you install special low temperature radiators in your new-build project, Kereen can advise you what is exactly required. For older properties where there is no opportunity to install underfloor heating at all, you can use a high-temperature heat pump and they can accommodate more traditional steel radiators.

This is a difficult question to answer as it depends mainly on the state of your property (insulation / Windows!) and the required heat (how warm do you want it to be!). However on average a well-insulated home could expect savings of up to 60% on their energy costs per year. After a quick assessment Kereen is able to do a simulation for your property which indicates how much savings can be made.

Heat pumps are designed to run for long periods of time. This means it is usually cheaper and warmer to leave them running during the day, compared to only heating in the morning and evenings.

Air source heat pumps take warmth from the air outside (even when it’s freezing) and use it to heat the home. Heat pumps can take getting used to as they operate differently to other forms of heating. They are designed to heat to low temperatures over a long period of time, rather than quickly providing heat when turned on

At night: Lower the temperature to around 10-15°C, and then set it to slowly increase in the morning so that the room is a comfortable temperature when you wake up.

Away for a day: Just leave the system running as usual.

Away for a week: The system should have a ‘holiday’ or ‘frost protection’ setting on the control panel, which will lower the room temperature while you are away. This will also prevent the pipes freezing if you go away in cold weather.

During the summer: Your heat pump might have a ‘summer’ mode, or you can simply turn down the room thermostat. This means the heating will not come on, but you will still get hot water. You can raise your heating temperature again slowly as the autumn approaches

Combined heat and power (CHP) is an efficient and clean approach to generating electric power and useful thermal energy from a single fuel source. CHP is used either to replace or supplement conventional separate heat and power (SHP). Instead of purchasing electricity from the local utility and burning fuel in an on-site furnace or boiler to produce thermal energy, an industrial or commercial facility can use CHP to provide both energy services in one energy-efficient step.

Every CHP application involves the recovery of otherwise-wasted thermal energy to produce useful thermal energy or electricity. CHP can be configured either as a topping or bottoming cycle. In a typical topping cycle system, fuel is combusted in a prime mover such as a gas turbine or reciprocating engine to generate electricity. Energy normally lost in the prime mover’s hot exhaust and cooling systems is instead recovered to provide heat for industrial processes (such as petroleum refining or food processing), hot water (e.g., for laundry or dishwashing), or for space heating, cooling, and dehumidification. In a bottoming cycle system, also referred to as “waste heat recovery,” fuel is combusted to provide thermal input to a furnace or other industrial process and heat rejected from the process is then used for electricity production.

CHP is a form of distributed generation, which is located at or near the energy-consuming facility, whereas conventional generation takes place in large centrally-located power plants. CHP’s higher efficiency comes from recovering the heat normally lost in power generation or industrial processes to provide heating or cooling on site, or to generate additional electricity. CHP’s inherent higher efficiency and elimination of transmission and distribution losses from the central power plant results in reduced primary energy use and lower greenhouse gas (GHG) emissions.

CHP reduces energy costs for the user. · CHP reduces the risk of electric grid disruptions and enhances energy reliability for the user. This is particularly useful for hospitals, research institutions, or industrial facilities where electric power outages are particularly disruptive and costly. · CHP provides predictability in the face of uncertain electricity prices

PV or photovoltaic solar panels turn daylight into free electricity. These operate completely differently from solar hot water collectors. When daylight strikes a PV solar panel, a DC electrical current is generated. ... This DC current then travels down to an inverter, which converts the electricity from DC to AC.

The amount of electricity generated annually will depend on a range of factors including the hardware chosen, size of system, the geographical location and the direction in which the panels are installed. With the most common silicon solar panels typically 1 sq. m of panels will generate ~150W of power on a clear sunny day (that’s enough to power a laptop computer). A home solar PV system sized at 20 sq. m (~3kW) would generate around 2,600kWh of electricity a year if well-located, over 40% of the typical annual electricity demand of an Irish home.

Yes, solar PV systems will still generate electricity when there is daylight, so they will still function on overcast days in Ireland. a home solar PV system sized at 20 sq. m (~3kW) would generate around 2,600kWh of electricity a year if welllocated, over 40% of the typical annual electricity demand of an Irish home.

Planning permission is normally not required, but please make sure you always check with your local authority and planning department. This is especially important if you live in a listed building or a conservation area.

Solar PV systems installed in a domestic setting under 12 sq. m (and representing less than 50% of the total roof area) are exempt from planning.

Adding a battery to your solar PV system means the battery will charge when the PV system is generating electricity which isn’t being used, and then discharge when you need it next (normally that evening/night). A battery can increase the percentage of solar PV electricity you use in your house

PV systems are low-maintenance. The most important aspect is to monitor the performance of your system regularly. This could simply be a routine check of your inverter to see that the system is operational  and that the energy meter is increasing each day. At Kereen, we will advise how much the PV system should generate each year, and see that your system is generating close to that amount.. The solar panels themselves are extremely robust, but consideration should be given to cleaning them every few years to maintain their performance. If you live near the sea or a main road more regular cleaning may be necessary.

Air conditioning systems work by moving heat from inside your premises to the outside. In a central air conditioning system air is drawn into the ductwork system through the return air system. Installed in the return air ductwork is an evaporator coil. This coil is connected to the condensor, the unit that is outside your home, by copper tubing. The refrigerant is then pumped from the condenser to the evaporator coil. As the refrigerant passes through the inside of the evaporator coil, warm air from inside your home passes over the outside of the coil. Because the refrigerant is cooler than the warm air, the refrigerant absorbs heat from the air. The refrigerant is then sent outside to the condenser unit. When the warmed refrigerant is in the condenser unit it is compressed by the compressor; the compression of the refrigerant causes it to boil. As the refrigerant boils it gives off the heat it picked up from inside your home. The refrigerant is then passed through the coil in the condenser unit where it gets cooled again and is ready to go back inside to pick up more heat from your home. As this whole process is going on, the temperature and relative humidity in your premises are both lowered. The relative humidity level drops because cooler air cannot hold as much moisture. As the air cools, it gives up some moisture and it gets collected in the base of the evaporator coil and is then drained away.

A quick and easy rule of thumb to use for sizing an air conditioner for a room or house is the square foot method. This formula is used only for a quick approximation and is based on certain guidelines regarding insulation R values, shading, ceiling height, construction materials, windows, doors, purpose of use and occupancy. In layman's terms, 400 square feet of residential living space in a desert climate requires 1 ton of cooling capacity based on adequate insulation, 8' ceiling height and tight windows and doors. To calculate your requirement using this method divide your total square footage of living space by 400. The resulting answer is the number in tons of air conditioning capacity required.

Air conditioners can last for more than 10 years if they’re well looked after. However, you’ll need to have your air conditioning unit serviced regularly to identify any potential issues in advance of them becoming a fault. We also advise regular cleaning and/or changing the air conditioning filters every so often to ensure maximum efficiency.

Ventilation is the process by which ‘clean’ air (normally outdoor air) is intentionally provided to a space and stale air is removed. Ventilation is where the air from outside is pulled and mixed with the air from inside. This air is then released back, resulting in a room with slightly purer air. The aim here is not to change the temperature of the room but to remove pollutants and bad smells through purification.

The major difference between air conditioning and ventilation is the fact that air conditioning does not use an external source to function, in most cases. Instead, air conditioning takes the air already inside a space to heat or cool it, depending on your settings. It will then recycle the air back into the room. This will be continually repeated until you have either a warm or cold room.

Ventilation, in comparison, works on a much less of a cycle basis. A ventilation system works to purify the air inside the workspace. The air comes from outside, mixes with indoors air and then removes air at the same time. This is a different cycle of extraction and replacement. For workplaces with air pollutants, strong smells or even few windows, this is an ideal setup as it allows better overall airflow.

Underfloor heating can be used in any size property: whether you are building an extension, a new home or retrofitting your existing home, Kereen Heat Pumps and HVAC will design your UFH to be a perfect fit that suits your needs.

When underfloor heating is used in a property or building it can have significant savings for the owners in comparison to the older traditional oil heating system using radiators, in fact you can save up to 30% on running costs and when underfloor heating is paired with a Heat Pump.

Underfloor heating pipes can be laid under any floor covering in your home or property. Stone, Marble, polished screed and tiles are the most conductive floor coverings.  However this system also works extremely well using engineered timber flooring, laminates and carpets where a special underlay is used.

Kereen Heat Pumps and HVAC will design your UFH system to give you full control over your heating for each room in your home.  Individual room or zoned area temperature control and scheduling thermostats can be installed, that give you the power to set basic heating schedules and switch to holiday mode when you are going away.  Thermostats can also be controlled at the touch of a button from your smart phone or any lap top/PC anytime or anyplace day or night.

The most efficient and cost effective way to heat your home is the combination of UFH with an Air to Water Heat Pump. Underfloor heating uses 40℃ heat, when combined with a low temperature heat pump can provide a constant ambient heat 24 hours a day, while ensuring you have continuous hot water on demand.