What is a Water Source Heat Pump and How Does it Work?
- Water Source Heat Pumps use the energy stored in a water source to heat your home and provide hot water all year round.
- It is based on one simple principle, heat transfer – using a small amount of energy to transfer low-grade heat from the water to high-grade heat, heating water to high temperatures. Essentially transferring heat from a ‘free heat source’, like the water, to a ‘heat sink’, like your home.
- Pipes are submerged in a river, stream or lake where temperatures remain at a relatively constant level of between 7–12°c.
- Water Source Heat Pumps can be installed as either an open or closed loop system:
- An open loop system uses ground water from a lake or well. The water is extracted and fed directly into the heat pump where the energy raised through compression is extracted as heat. This increased heat is transferred by the heat exchanger to your property’s heating/hot water system where it is readily available for use. (In this type of installation, you may need environment agency consent to extract and discharge water from these sources, however Ecovision can advise and manage this application for you when required).
- A closed loop system uses a refrigerant in a closed loop to transfer energy/heat from the water source, e.g. a lake. Pipes are laid in the lake in which a liquid refrigerant absorbs the waters heat and transfers this heat to a heat pump located inside the house.
Why Install a Water Source Heat Pump?
- Improves your heating efficiency – Virtually maintenance free and silent to run, a Water Source Heat Pump is able to produce more energy than they consume, with every 1kW used providing up to 4kW of energy out.
- Reduces your annual heating and hot water bills against fossil fuel alternatives
- You can earn from the Renewable Heat Incentive
- Reduces your carbon emissions, helping in the fight against the worrying effects of climate change
Water Source Heat Pumps can reduce your annual heating and hot water bills against fossil fuel alternatives and often pay for themselves within the grant period set out within the Renewable Heat Incentive (7 years of payments for a domestic property).
However, each and every property is different so upfront cost, bill reduction and your ROI
What is the Renewable Heat Incentive?
The RHI is a Government backed scheme which pays the owner of a renewable technology, such as a heat pump, for generating renewable energy on site. To qualify for these quarterly payments, which last seven years, you will need to use an MCS accredited company – such as Ecovision – and ensure your MCS accredited product is installed to MCS standards.
The MCS (Microgeneration Certification Scheme) is there to ensure the system is safely installed by professionally qualified installers and performs to the standards required by the Government.
How do I apply for the Renewable Heat Incentive?
The RHI is administered by Ofgem and as the owner of the system, you will need to make the application for the RHI. We will of course ensure you have all the required paperwork to successfully complete this; this is supplied as part of your handover pack and we will be on hand to help at any point throughout the process.
Can I change the temperature within my home?
The heat pump will be weather compensated which means that you set the temperature you want within your home and the heat pump uses the least amount of electricity required to achieve the desired temperature.
As the outside temperature reduces, or indeed increases, the heat pump will automatically react and adjust its output to maintain your chosen internal temperature. It does this via a range of sensors strategically placed within the system – you simply set your desired temperature and let the heat pump do the rest.
Our customers often report an improvement in comfort levels as the heat pump maintains a constant temperature rather than allowing the internal temperature to fluctuate based upon a traditional time clock.
How long do Water Source Heat Pumps take to install?
The installation of a Water Source Heat Pump can take anywhere between 4 weeks and 16 weeks, depending on the size and complexity of the pump location. As there are many elements that come together during this process Ecovision offer an all-inclusive installation, including everything from digging the trenches to commissioning the Water Source Heat Pump.
Will a Water Source Heat Pump keep me warm in winter?
Yes, the system will be capable of providing all of your heating and hot water throughout the year without any requirement for a supplementary boiler.
Do I need to coordinate any other trades on site?
No, Ecovision can undertake the entire installation, providing the complete design, supply, installation and commissioning of the system, without any need for third parties or subcontractors.
During Ecovision’s many years of business we have found the biggest issue for customers is ensuring that everyone knows what and when their responsibility starts and ends. We have found that by offering the complete installation we ensure that we remain in control of the whole process as well as being entirely responsible for the successful completion of the installation with our in-house installers reporting directly to Ecovision.
Does a Water Source Heat Pump require lots of maintenance?
Ecovision can complete this task as part of an annual service, leaving you with absolutely no maintenance requirements.
Will a Water Source Heat Pump work with my existing radiators?
Ecovision will have to complete a full room-by-room emitter (radiator) assessment before any installation takes place to ensure your existing radiator circuit is capable of emitting the heat required. This a government requirement in order to be eligible for the RHI subsidy.
We usually find that most of the radiators are suitable but that some will need to be changed to meet the government’s accreditation standards. These changes will ensure the lowest possible running costs and the cost of any changes will be made clear in your quotation