A friend of mine recently discovered that his electric bill had been too high due to his installer connecting his heat pump thermostat incorrectly. The heat strips have been coming on every time the thermostat called for heat, rather than just using them for backup or emergency.
He has had the installer back several times to investigate this and other issues. Until he finally discovered the problem on his own and fixed the thermostat problem himself. This has been going on for over 2 years and they are estimating about $3200 in excess energy charges due to this error. As an example his bills were running in excess of $500 even in mild months while neighbors were using about half that amount of electricity with similar specifications.
Should he ask the installer for any compensation for this error? Or possibly ask the power company if they can provide any reimbursement for the error? I'm sure it's a long shot to get anything from either one. Is there any liability on the installer's part?