Restrictive covenants are not considered illegal, but restrictions that are particularly exacting have been found to limit the ability of an individual to do business. In these cases, some courts have found a specific restrictive covenant agreement not to be valid. That is, the court in question would not hear the case.
1 Because tankless water heaters require a 220V/240V electrical outlet or larger gas pipes than found in an average home plus a stainless steel ventilation system, installation can add $1,000-$3,000 or more, bringing total costs to $1,800-$4,500. A central tankless water heater providing hot water for an entire house can cost $800-$3,000 or more, depending on gpm capacity and whether it's gas or electric, plus features like a safety temperature lock or a remote control.
Unless an electric system/service upgrade is require, the installation of an electric tankless water heater is generally much cheaper than the installation of a gas tankless water heater. Maintenance, Service Life and Warranty: Electric tankless water heaters require very little maintenance.hole house electric tankless water heaters cost about US$500-700 where as gas tankless water heaters generally cost US$1,000 or more, especially for better quality systems with electronic ignition systems. This does not include installation-see below.