Which is ‘better’ or more efficient – a borehole or surface collector?
Both work just as well, but drilling usually costs more but has the advantage of needing less site space and may be better in a retro-fit situation or for minimal disturbance. Most new built homes will have a site already disturbed with construction works and therefore see little extra expense in fitting a horizontal collector. In our mild and wet Irish climate, surface or horizontal collectors work extremely well.