Rough pricing for a range of 40-gph units is as follows:
• High-tech machines with sophisticated energy recovery pressure pumps now cost about $20,000 and use a number of proprietary, electronic and plastic parts.
• Standard, commercially produced marine units sell for $10,000 to $15,000.
• Modular or kit units are available from several sources for about $6,000. These companies provide all the parts necessary, as well as installation guidance. Some have assembled and tested modules, making assembly and installation easier. These are a great option if you can’t source all the parts yourself and want installation guidance. Just be sure you compare prices for all the parts you need, as some units are pretty basic.
• A 40-gph, do-it-yourself project can be completed for as little as $3,000. Making your own unit involves sourcing and assembling components from the Internet, your local hardware store, marine flea markets or other sources.
None of the above prices include installation labor, which is required for all units.
