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Ground Source Survey

At Harvest Cornwall, we understand that no matter which brand of heat pump is being installed or how experienced the installer may be, if the survey is not carried out correctly, the size of the heat pump may not be right for your property and it will not heat your home.

Survey, survey, survey

At Harvest Cornwall, we understand that no matter which brand of heat pump is being installed or how experienced the installer may be, if the survey is not carried out correctly, the size of the heat pump may not be right for your property and it will not heat your home.

After our initial contact by email or telephone we will arrange a convenient time to visit your property. This visit is a no obligation survey to gather information about your property and about what you want to achieve from a new system.

Fully qualified

We only use highly qualified and experienced surveyors for every single job, no matter how big or small.

Our surveyors will assess and take into account:

  • Room sizes/volume
  • Floor/walls/ceiling/roof types
  • Insulation levels
  • Windows/Doors
  • Thermal bridging
  • Air changes depending on room type/age of property/fireplaces
  • Existing heating system
  • Existing emitters
  • Ground type

Without a very detailed survey from an experienced surveyor you could end up with:

  • Incorrectly sized heat pump that will not heat your home
  • Undersizing of boreholes or horizontal loops
  • Undersized heat emitters

At Harvest Cornwall, we ensure that this does not happen.  We ask a lot of questions and complete a lot of calculations and drawings using specialist MCS software which are all rechecked with the heat pump manufacturer.

Several installation companies will work from a rule of thumb in specifying a Ground Source Heat Pump.  Where this may work for specifying a new natural gas boiler, it will not work for a Ground Source heat pump and you may have an issue in claiming the Renewable Heat Incentive (RHI). 

Heat Loss Report

As the client you must insist to see a Heat Loss Report and the calculations that have led to a certain size and type of Ground Source system being specified. This does not only include the Ground source heat pump but also the borehole or horizontal ground loops. 

At the initial survey we will investigate the fabric of the building including the walls, both internal and external.  In Cornwall it is common to find a mixture of granite and stone and it is important to identify this at the stage of surveying because the U-values are very different.  We also need to identify U-values for floors, roof, and window types. From this we can determine existing U-values and how well your property will hold heat which will be collated in the Heat Loss Report.