Advantages & Disadvantages

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Bury the heat 

  • On average, home or business owners can expect to save up to 50 per cent on their cooling costs with a geothermal system, says Steve.
  • The air coil on a geothermal cooling system is five to eight degrees cooler than an air conditioning one, which means it pulls more humidity out of the air. With less humidity, it may be comfortable at a warmer temperature, thus increasing savings on cooling costs.
  • An added benefit of geothermal systems is that they can also be used to heat water. The heat being taken from a building can be transferred into a water tank first, creating hot water as a by-product, before sending it into the ground.
  • Cayman’s climate isn’t kind to air conditioning units. They take a constant beating from the sun, the humidity and the salt in the air and, realistically, an air conditioning compressor unit is not expected to last more than five to seven years, says John Van Ryswyk, owner of GeoCayman, a division of NCB Group and the exclusive distributors of GeoComfort, GeoThermal cooling systems in Cayman.
  • With geothermal cooling systems, on the other hand, the life expectancy of the equipment is 20 years or more.
  • While geothermal cooling systems make sense in new-builds, they can just as easily be retro-fitted. Indeed, when construction slowed right down in the US following the economic meltdown in 2008, Steve says 80 per cent of his business was coming from home owners who were focusing on improving existing homes and making them more efficient, rather than building new ones.




Steve Smith (left) and John Van Ryswyk