What is a prognosis in ground source heating terms?
This is an independent hydrogeological survey; an essential requirement before any drilling commences.
The survey or prognosis provides an indication of the underlying hydrogeology – detailing the nature of the ground to be drilled, the likely depth at which water will be found and an indication of water quality. A prognosis enables the borehole design to be properly specified.
Whilst the prognosis is not a guarantee of success, it will highlight any risk at an early stage.
Which type of prognosis do you need?
The requirements for water and for heating boreholes are in many respects different; each require a specific form of prognosis or hydrogeological assessment:
- A prognosis for ground source heating will concentrate on the ground’s capacity to deliver heat to a heat pump.
Ground source heating + cooling = geotechnical report
What is a geotechnical report or ‘geo-report’?
A detailed geo-report allows the geology of a drill site to be identified, drilling hazards to be indicated and the design length of the ground loop to be calculated.
The reports are based on geological interpretation by a chartered geologist using data from maps and national archives and databases. They are written in an accessible way that we as the drillers or you as the customer will understand.
The costs of a geo-report is based on the size of heat pump:
- Less than 15kw £540.00 incl. VAT
- 15kw – 30kw £780.00 incl. VAT
- 30 – 45kw £1,200.00 incl. VAT
- Over 45kw Price on application – Call 01544 267980 to arrange a report.
Costs revised January 2011
Pricing shown above is for information only and does not form the basis of any contract. Contact WB+AD Morgan for more information or for a quotation.