Fully qualified and experienced
plumbing and heating engineer

Heat pumps

If you are environmentally friendly, they may be of interest to you as heat pumps extract from the ground, air, or water is constantly being renewed naturally, however they do need electricity to run.

A heat pump is a device that transfers heat energy from a source of heat to what is called a heat sink. Heat pumps move thermal energy in the opposite direction of spontaneous heat transfer, by absorbing heat from a cold space and releasing it to a warmer one. A heat pump uses external power to accomplish the work of transferring energy from the heat source to the heat sink. The most common design of a heat pump involves four main components – a condenser, an expansion valve, an evaporator and a compressor. The heat transfer medium circulated through these components is called refrigerant.

  • The average life of a heat pump is 20 years
  • The government give incentive pay backs of up to £30,000
  • The Heat pump consists of an outdoor unit and or a new hot water cylinder. This will all be connected using existing pipework in your home where suitable
  • Maintenance – There are some maintenance that the homeowners can do themselves. It includes keeping the outside unit clean and free of debris. Other than this it is very important to have your system serviced once a year. We provide details of this

A ground source heat pump uses pipes that are buried in the garden to collect energy from the ground. This type of heating can then be used to power radiators, under floor or air systems and even your home’s hot water.

These types of pipes are filled with a combination of water and antifreeze. This mixture is effective as it circulates through the pipe absorbing heat from the ground, meaning it preserves energy.

Every home is different therefore the length of the ground loop can vary, as the amount of heat you need may be more/less. A Longer loop can draw more heat, but requires more space to be buried in. If space is limited there is an option to install a vertical borehole.

The Ground Loop collector design and installation is critical to the Correct operation of any ground source heat pump system

The Ground Loop consists of HDPE plastic pipework buried underground, and connected back to the heat pup via a Manifold.

There various configurations for the ground loop:

  • Slinky
  • Straight
  • Borehole
Ground source image
Ground source image
Ground source image
  • 50 meters long
  • 1 meter wide by 1 meter deep
  • 2 meters between each trench
  • At least 1 meters from boundaries
  • At least 3 meters from foundations
  • 200 meters pipe in each trench
  • 100mm sand below and 100mm sand above
  • A 50m trench will require approximately 10m.cu of sand
Slinky image
  • 100 meters common trench or 200 meters slot trench
  • 1 meter deep
  • 1 meter between pipes
  • At least 1 meters from boundaries
  • At least 3 meters from foundations
  • Up to 200 meters of pipe in each trench
  • 100mm sand below and 100mm sand above
  • Each trench will require between 8 and 10 cu m of sand
  • Depth to suit - up to 200mtrs per hole
  • At least 6mtrs between each borehole
  • At least 3mtrs from boundaries and foundations
  • Backfill with Bentonite grout
  • Where pipework needs to be extended from the borehole to the manifold any buried joints must be fusion welded.
Slinky image

Ground Source Heat Pumps require regular maintenance:

  • Checking and cleaning two filters. One on the heating circuit and one on the ground loop circuit
  • Checking the heating system is up to pressure
  • Checking the ground loop expansion bottle is topped up
  • Check ground loop glycol protection
  • Checking there is no air in the system
  • Standard annual unvented hot water checks
  • correct electrical tariff is being paid

Ground source heat pump installation in a domestic property is likely to require an investment of between £10,000 and £18,000 depending on the size of property and energy demand as well as method of collecting energy from the ground.

The installation is likely to be eligible for the Renewable Heat Incentive. The amount saved on heating bills depends on the particular characteristics of the property and how warm you like to heat your home.

A heat pump is one of the most efficient ways to heat your home and provides an energy calculation showing how much energy can be saved and anticipated running costs. The Renewable Heat Incentive provides an income to add to the comfort and lower running cost benefits.

Air source heat pumps are much more energy efficient as they absorb heat from the outside air. This heat is transferable and has lots of uses; it can be used; to heat radiators, under floor heating systems, or warm air convectors and hot water in your home. No matter what kind of air source heat pumps you decide to use, we can help.

Much like the way a fridge extracts heat from its inside, an air source heat pumps extract heat from the outside. They are excellent because they can even heat air when the temperature is as low as -15° C!

Air source image

Air Source Heat Pumps require regular maintenance: Air source heat pumps are designed to help reduce heating and hot water bills, however, if they are not regularly maintained they can do the exact opposite. ... Air source heat pumps are an alternative heating and hot water solution and therefore need annual servicing just like you would a boiler.

To keep systems running at optimum efficiency, we recommend that heat pumps be serviced on an annual basis to prevent costly breakdowns.

  • Check operation of all components
  • Check calibration of sensors
  • Test safety devices
  • Clean filters
  • Inspect & report on pipework
  • Adjust settings to customer's requirements
  • Check fluid levels
  • Assess running time, starts & back-up
  • Check integrity & safety of electrical connections
  • Unvented hot water cylinder safety check

The cost of installing an air source heat pump normally will require an investment of between £6,000 and £10,000, depending on different factors, such as the size of the property and the levels of energy demand. The amount of money that you save from introducing an air heat pump system will depend on the characteristics of your property, how warm you like to keep your house, etc. When converting from an oil boiler to an air source heat pump, our customers on average save between £600-£1000 a year. Once we have agreed on the right system, are then able to produce an energy calculation that will outline the anticipated running costs for the system and the amount of money that can be saved.

Fire Sprinkler Protection Limited is a leading and reputable contracting company based in Oxfordshire. Ever since we opened for business, we’ve taken a comprehensive approach to project management, providing our clients with a wide range of services to cover their needs. Get in touch today to learn more about what we can offer you and to receive your free estimate.

Carterton, Witney, Headington, Oxfordshire, Abingdon, Chipping Norton, Wantage, Kidlington, Cumnor, Oxford, Eynsham, Faringdon, Woodstock, Clanfield, Lechlade, Bampton, sutton, Wiltshire and surrounding areas.

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Renewable energy Witney | MPN plumbing and heating - Carterton, Witney, Headington, Oxfordshire, Abingdon, Chipping Norton, Wantage, Kidlington, Cumnor, Oxford, Eynsham, Faringdon, Woodstock, Clanfield, Lechlade, Bampton and sutton.