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• The power of your solar panel system – there's no point buying a higher capacity battery if your system will never generate enough electricity to charge it
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• Your budget
• Whether you care about having the latest technology and a recognisable brand name

It may be hard to believe with the summers we have in the UK, but there is more than enough sunlight to power solar panels. Solar PV (photovoltaic) panels operate in daylight, rather than needing direct rays from the sun so they’ll work throughout the year.

First and foremost let’s look at the meaning of a ground source heat pump. A ground source heat pump is simply a renewable heating system which happens to absorb the low temperature solar energy stored in the ground or in water with the help of a pipework that’s submerged and converts this energy into a higher temperature through compression. A ground source heating pump is capable of supplying the entire heating and hot water needs of a building throughout a whole year regardless of the season. So how exactly does a ground source heat pump work? Let’s have a look!

In principle, a ground source heating pump makes use of a refrigeration system but in a reverse form as it extracts low temperature heat from one point or location which is the source and transfer a higher temperature heat to another point or location - the sink. The pumps are powered by electricity and the operational principle can also be incorporated at generating both heating and cooling energy.

Knowing fully well heat naturally flows from warmer to cooler places, the ground source heat pump takes advantage of this physics by distributing a cold fluid via ground array pipework either in the ground or in water. It’s able to extract low grade energy from external sources of heat which includes soil, rock, lakes as well as streams.

Once the absorbed energy has been released to the heat pump from the ground or water, the fluid proceeds with its circuit back to the pipework to start its cycle all over again. Some of the benefits of the ground source heat pumps includes low carbon emission and improved air quality, efficient and affordable heating, the use of free heat from the ground and lots more.

If you’re considering installing ground source heat pump, it’s likely you’re also wondering just how deep it’ll go into the ground to be efficient. Well, the initial step to take while determining the ground source heat pump’s design is to research the different options available to reduce the space heating as well as hot water demand. To achieve this, there must be an accurate measurement of energy efficiency which is usually done by getting an Energy Performance Certificate ( EPC) . This is helpful as such that it helps to identify the most suitable or the right size of heat pumps which will help reduce the consumption of energy, heat loss as well as hot water needs of the house.

Generally, ground source heat pumps are usually more compatible with new builds against retrofits. What’s more? The heat pump has two different types of loop systems :

✓ The open loop system and;

✓ The closed loop system.

The open loop system absorbs water from the ground and transfers this ground water via a heat pump to where it carries out the extraction of heat. Meanwhile the closed loop system extracts heat from the ground and incorporates a continuous loop of piping that’s linked to the indoor heat pump. There are a few types of closed loop system, these includes:

✓ The Horizontal Ground Source Heat Pump. This is installed in horizontal trenches of about 1 to 2 metres deep. This is more common in areas where land is readily available.

✓ The Vertical Ground Source Heat Pump. These boreholes are a more costly option but it’s also the best option when land is not readily available for horizontal installation. The insulation hole is dug at a minimum of 6 metres into the ground, while the entire piping will be at a depth of about 50 to 150 metres based on your home’s heat requirements as well as the ground’s composition.

Air source heat pumps do make a bit of noise. However, it’s the external unit that makes the noise, minimising disruption in your home. And while it’s a good idea to ensure your external unit isn’t located directly under your bedroom window or very close to a neighbour’s property, it won’t be louder than 40-60 decibels. In many cases, this is actually quieter than a fossil fuel-powered boiler.

In a similar way to other major home improvement projects, some specific requirements must be met to allow for the installation of solar panels. The main reason why these standards and regulations were established is to minimize the risk of the solar system becoming an issue or potential hazard in the unforeseeable future. So if you’re thinking about buying and fitting new solar panels, you’ll probably want to know whether or not you’ll require to submit a planning permission application for approval before you can proceed.

Generally, solar panels are covered under what’s called “Permitted Development” which gives you the freedom to install your solar panels without having to apply for a planning permission. However, there are some exceptions to this rule. These exceptions include if your house is a listed building or if your house is located within a conservation area. In these exceptional cases, it’s possible that you’ll need to apply for a planning permission, but this will largely depend on the discretion of your Local Planning Authority. What’s more? Solar panels are usually subjected to normal building regulations which includes examining the roof to make sure that it can support the additional weight. You can call in a MCS certified installer to carry out this check for you.

In order to install your solar PV on your roof, you must follow these guidelines:

✓ Your solar panels shouldn’t go beyond the highest point of the roof (excluding chimneys).

✓ The solar panels shouldn’t project beyond 200mm off the roof’s edge.

✓ The solar panels should be removed once they’re no longer used to produce electricity

✓ The solar panels should be installed such that the area and building’s appearance change is minimized.

Whether installing an air source heat pump will help you save money depends on your property, how long you expect to live there, and the type of heat pump you get.

Air source heat pumps are initially quite expensive to install. However, if you get an air-to-water air source heat pump, you’re eligible for money from the Renewable Heat Incentive [https://www.energysavingtrust.org.uk/scotland/grants-loans/renewables/renewable-heat-incentive] (RHI). This is a UK government scheme that gives you quarterly cash payments over seven years if you install an eligible renewable heating technology (air-to-air air source heat pumps aren’t included).

All this means that if you have long-term plans to stay in your property, then an air-to-water air source heat pump can be a great way to save money on your heating bills. However, if you’re planning on moving out of your property relatively soon, or are a considering an air-to-air air source heat pump, it may not be the best financial option for you.

It’s important to remember that air source heat pumps are at their most efficient when installed in very well insulated properties. If your property’s not very energy efficient, you may find that a heat pump won’t help you save money.

Obviously the performance of a solar thermal system will vary depending on the location of the home, the insulation of the property, and your own hot water requirements. Solar thermal panels are capable of providing all of your hot water requirements from April to September. They will still make a contribution to your hot water needs for the rest of the year, but in general you will need a backup system to further heat the water in the colder months.