Check Basic Feasibility for a Heat Pump here

  • What is RHI Payments or Renewable Heat Incentive

    Who can apply for the RHI Payments the simple answer anyone who owns a property that installs the renewable energy technology the RHI scheme supports.
    The Government backed Renewable Heat Incentive also known as RHI Payments has been put in place to encourage the take up of renewable technologies to reduce energy usage and carbon emissions such as:

    Air source heat pump >>> for central heating and hot water

    Ground source heat pump >>> for central heating and hot water

    Solar thermal >>> for hot water sun dependant

    Biomass >>> for central heating and hot water

    RHI Payments are paid over a period of 7 years (Once an RHI application has been approved by Ofgem you are locked in for the 7 year)
    Payments are paid every three months

    Tax Free and Index linked

    The average amount paid for domestic installations for air source heat pumps is from £7,000 to £11,000 paid over a 7 year period.
    The average amount paid for domestic installations for ground source heat pumps is from £18,000 to £28,000 paid over a 7 year period.
    Commercial RHI is paid over 20 years. All commercial enquiries email:
    Email Green Tech Surveys if you would like to request the Renewable Heat Incentive complete guide from Ofgem.
    If you have any more questions about the RHI payment do contact Green Tech Surveys

  • How is the Renewable Heat Incentive worked out

    This is worked out using the MCS (MCS: NAP/34010/20/1 Microgeneration Certification Scheme) calculator based on a number of factors that the engineer has worked out from the survey report.

    The space heat and hot water demand that you will find on the EPC for the property if this is less than 7 years old is a good indicator of how much you could be awarded. Older EPC’s do not show this information so a new EPC will be needed. If you do have this information on the EPC then you will see the amount of kWh’s for both the Space Heat and How Water Demand this can be a good guide to how much you would be awarded. Green Tech Surveys are happy giving you a guide to how much RHI you would receive based on some core information just contact us.

    The application is a simple online process with Ofgem. A complete guide is available contact us for this.

    Before installation an estimated RHI payment will be provided. This tends to be a conservative estimate. This information can be gained from the Survey and heat loss calculations.

    After completion of the installation

    Once Ofgem has agreed this amount it is fixed for 7 years index linked and TAX free. Payments are paid ever three months direct to you. Once the installation has been completed and commissioned you receive the Customer Handover Pack an appointment will be made to complete the RHI application generally within 2-3 weeks this application is processed then paid every three months for 7 years.

    If you have any more questions about the RHI payment do contact Green Tech Surveys

  • What is Microgeneration Certification Scheme (MCS)

    MCS refers to the Microgeneration Certification Scheme. It is a requirement of the Domestic RHI scheme that all heating systems are certified by MCS. MCS is an internationally recognised quality assurance scheme supported by the Department for Business, Energy & Industrial Strategy (BEIS), formerly known as the Department of Energy and Climate Change (DECC). MCS certifies both products and installation companies to help ensure that Microgeneration products are installed to a high standard.
    You will need to provide an MCS certificate number as part of your application, to confirm that your heating system has been installed in line with the MCS installation standards (see below). Applicants who do not have an MCS certificate will not be eligible for the Domestic RHI. This is because MCS is currently the only certification body approved by BEIS for the Domestic RHI scheme.
    Green Tech Surveys is a proud member of MCS as well as the other industry accreditations below that are in place to protect customers.
    If you would like any more information about MCS contact Green Tech Surveys

    Registration numbers to Green Tech Surveys Main Accreditations:

    >> MCS: NAP/34010/20/1 Microgeneration Certification Scheme
    >> Trustmark: 1929840
    >> RECC: 00071386 Renewable Energy Consumer Code
    >> IWA: GIZ.07.20 Insurance Backed Warranty

  • What is the life expectancy of a heat pump

    The average life expectancy for a quality heat pump is 15 to 20 years. You will need to service a heat pump annually like you would a boiler to maintain the efficiency and maximise the life expectancy.

    It’s a good idea to wash the machine down a few times a year with a cloth/sponge and water to help remove salt and ammonia this will help reduce corrosion. This is especially worthwhile if you live on or near the coast or in rural area.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • How does an air source heat pump work

    The air source heat pump works on the same principles as a refrigerator, but in reverse, to produce heat instead of a coolant. This technology has been around for many years.

    Extracts energy from the atmosphere and converts it into hot water

    Works in all weather conditions 24 hours a day 365 days a year. Sun, rain, frost and snow

    Works in temperatures as low as – 15 C

    Norway, Germany, Scandinavia and Swaziland are just a few countries that use heat pumps they have a much harsher winter than the UK. Heat pumps work in cooler climates. The key is all about the quality of the company complete the process before, during and after the installation of a heat pump.

    A heat pump should be installed and set up to heat the home or business on the coldest day. In the southern part of the UK this would be at minus 7 degrees Celsius or 19.5 Fahrenheit.

    Heat pump installations should be installed to meet certain temperatures as a minimum you can turn the heating system up you are turn it down. You decide at what temperature you set the heating with the property. The most energy efficient will be 21 degrees Celsius for all rooms apart from Kitchen at 18 degrees Celsius and the bathroom at 22 degrees Celsius.

    The importance of a good efficient installation is on many key factors that only comes from years of experience that Green Tech Survey have.

    Installed throughout the UK for decades

    Works with radiators, swimming pools and underfloor heating

    Air source heat pump can heat home if they are installed correctly

    Produces hot water in your water cylinder for use anywhere in the house

    Reduces the cost of heating your home and the supply of hot water

    Contact Green Tech Surveys if you would like more information about air source heat pumps.
    Contact Green Tech Surveys if you would like more information about air source heat pumps.

    A little history

    Heat pumps have had more than 20 years of research and development in Europe. Heat pump systems are available in about 30 countries around the globe. The concept was developed By Mr William Thomson (also known as Lord Kelvin) in 1852 and the first heat pump was built in the 1940s. Commercial heat pumps have been available since 1960s and 70s. Modern commercially available units place the emphasis on optimised design. Reliability of the technology is proven.

    The Beginning

    Mr Robert C. Webber, an American inventor, is credited with building the first heat pump during the late 1940s. Webber got the idea for the heat pump by accident when he was experimenting with his deep freezer, and burned his hand after unintentionally touching the outlet pipes of the cooling system. The burning of his hands gave him ideas for the basic mechanics of how he would build the heat pump.

    Heat Pump Invented

    Mr Webber followed multiple steps to create the first heat pump. According to MasterTherm, “He connected the outlet piping from a freezer to a hot water heater and, since the freezer was producing constant excess heat, he hooked up the heated water to a piping loop.” Then Webber used a small fan to propel the warm air in the building. After he saw that his invention was successful, he built a full size heat pump to provide heat for his entire home.
    This information was gained from research into the history of heat pumps by Green Tech Surveys.
    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Will a heat pump heat my home and pride all my hot water needs

    YES a good installation based a bespoke renewable heat design will provide all the heating and hot water demand needed. Most domestic properties will only need one heat pump. Air Source heat pumps come in different shapes and sizes ranging from 5kW to 17kW. It’s really important that the following basics are covered to ensure you have a successful installation.

    • Quality survey
    • Experienced person dealing with heat loss calculations, heat loading and heat design
    • BTU’s are worked out for each room and radiators changed where needed
    • Experienced person carrying out the Pre Installation Survey to plan the installation for the installation team
    • Top quality equipment, machinery, parts and material used for the installation
    • Experienced installation team that install the renewable heating system
    • Post installation inspection and commission by a qualified person

    The head pump installation needs to be installed so it works at the coldest temperatures when the property most needs heating.

    Green Tech Surveys only work to the above high standards understanding the reasonability that we have to our customers. Green Tech Surveys are completely responsible for the heating systems that we install. The owner of the Green Tech Surveys dictates the quality of every installation ensuring and maintaining the highest standards.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Does the heat pump need to be installed on a south facing side of the property?

    No the ambient air temperature around a property doesn’t make enough difference to dictate the location of the heat pump. The heat pump can be located at any orientation.
    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Would it be possible to get a comparison of installation cost and RHI payments for the bivalent gas and or air to air-heat-pump vs air-only air source pump to help us decide either now or as part of the survey / quote?

    Yes Green Tech Surveys can supply quotes for everything related to renewables. Air to Air is not supported by the RHI scheme. Green Tech Surveys are happy providing all the information that will help you reach the final decision that is best suited to the property and your budget. Green Tech Survey will advise on the best suitable option at the same time giving you options. A bivalent heating system means leaving a boiler in situ this would mean the RHI is metered for payments. Sometimes at bivalent heating system is the best solution depending on the property a survey will show the overall heat demand that determines the size of the heat pump. You are best waiting until a survey has been completed because the heat design will show the best bespoke option for the property. You are better avoiding where possible leaving a boiler in situ for a number of reasons. A poor quality installer that lacks experience would tend to recommend this can compensate for a bad installation. In this case the heating system could mainly depend on the boiler. You are better off having good air source heat pump installation that is bespoke designed for the property first time.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Do you help with RHI application?

    Yes, Green Tech Surveys provide all the documentation you need to process the RHI application we can assist as needed. This is a simple online application with Ofgem. Green Tech Surveys can go online at the same time as you and help guide you if needed.
    Green Tech Surveys can provide you the complete guide about the RHI scheme from Ofgem. Simply email a request for this information.
    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Are there any building control implications – if so, do you self-certify or do we need to manage and pay for building control certification?

    For one heat pump NO there is no planning permission needed. Two heat pumps need planning permission. The government are keen to install heat pumps so all main obstacles have been taken away from domestic installations. Each local authority/council is given carbon reduction targets to achieve… It’s with everyone’s interest that we go green.

    The may be different if you are in an AOB, conservation area or grade 1 or 2 listed. Contact us for more information so we can help guide you.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Is the cost of a new EPC included in survey, if not, how much is this?

    Sadly we are unable to allow this under the strict guidelines, rules and regulations the EPC needs to be independent. Green Tech Surveys do use an external surveyor sometimes if we are unable to cover the survey ourselves then this can include the EPC but then there is an extra cost of £50. Green Tech Survey can only deduct the £300 survey fee from the cost of the installation when placing an order. Green Tech Surveys cannot be seen to have any influence nor pay for the EPC. The average cost of an EPC is from £70 – £120 depending on the size of the property.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Will an EPC surveyor be able to figure out if our cavity walls are insulated? We suspect they are but are not sure.

    Yes we would be able to determine this before the installation started and/or the RHI application. The EPC inspector would/needs to check this. I would request that the EPC inspector checks this in detail. Green Tech Surveys can help with all aspects of insulation. The average cost of an EPC is £70-£120 depending on the size of the property. The EPC needs to be no more than 2 years old at the point of RHI application. If a cavity wall is feasible to be filled then this does need to be shown on the EPC at the point of RHI application. This is within the homeowner’s interest to insulate the property to stop heat escaping this will reduce bills. The more you insulate the property the less it will cost to heat also reducing carbon emissions making the home or business more sustainable. Sometimes a property can be hard to treat therefore becomes exempt.

    The Domestic RHI scheme rules state that you must install loft and/or cavity wall insulation before applying, if it’s listed as a recommendation on your Energy Performance Certificate (EPC).

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Room BTU’s requirements and radiators.

    A complete list of room by room of BTU requirements (British Thermal Units) will be provided within the survey report. Green Tech Surveys can install new standard panel radiators unless you prefer designer type radiators. Green Tech Surveys are happy that our customers select and supply their own radiator if they want. Green Tech Surveys will install them. It’s important that each room has the correct sized radiator installed so the heat pump can heat each room to the desired temperatures. If you leave old radiators that are under sizes then the heat pump will over work and cost far more to run. You are 100% better off getting the installation correct first time. Green Tech Survey’s will advise and guide on all aspects of the air source heat pump installation. It’s important to ensure that the design of the renewable heating system being installed using a heat pump is bespoke for each property to maximise the energy efficiency of the heat pump installation. The more efficient the heat pump installation the less the running costs will be also less carbon emission. Green Tech Surveys will recycle radiators where possible to reduce waste and costs.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Do you flush the old heating system  

    Yes, that is correct. There is a few ways to flush the system depending on the installation so this can be explained this during Pre Installation Walkthrough Survey. It’s important that the flow of water around the central heating system is swift. The quicker the hot water flows around the central water heating system the quicker this returns to the heat pump the warmer the water the less work for the heat pump. Sometimes there can be an extra pump installed and a filter system depending on the size of the installation. The heat pump has a built in water pump and filter but this can be doubled up to improve the efficiency overall. All of this will help improve the efficiency of the renewable heating system being installed.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Do we need to replace the water cylinder

    Yes in most cases you do. The water cylinder needs to be compatible with the air source heat pump. Green Tech Surveys use the top 3 brands in water cylinder. Green Tech Surveys will not compromise on quality of materials, equipment, machinery, or parts used in any area of the installation.

    The water cylinder will be sizes correctly for the property. A guide is 50 litres per person per shower per day and excess of 50 litres for general use per day equals the size of the water cylinder. Also take into consideration future proofing the property it’s not just about how many people live in the property now but how many could live in the property in the future if you were to sell or pass the property onto a family member.

    If you have solar thermal installed already you may have a compatible water cylinder already in place this could be checked on the survey.

    The entire heating and hot water system will need to be compatible with the air source heat pump so the entire renewable heating system can reach maximum efficiency.

    Contact Green Tech Surveys if you would like more information about air source heat pumps.

  • Can I relocate the Water cylinder?

    Yes you can… you will be given options such as the loft, garage, utility room or standard airing cupboard.

    Shall we locate the water cylinder to the loft? This can be discussed on the survey and conform on the Pre Installation Walkthrough Survey to confirm what is needed re loft hatch as water cylinders come in all shapes and sizes also they can be bespoke made where needed. Again this is finer detail. Green Tech Surveys will provide all the advice and guidance needs for the best options suited.

  • Green Tech Surveys look forward to chatting and helping you soon.