Promotional value expires 120 days after purchase. Amount paid never expires. Appointment required. Not valid for cash back. Cannot be combined with other specials or offer. Not valid towards past or current jobs. Residential only. Limit 2 per person, may buy 2 additional as gifts. May be repurchased every 30 days. Limit 1 per visit. Limit 1 per household. Valid only within 5 miles of zip code 21044. Not valid in the state of Virginia. Diagnostic fee will be credited towards any necessary repairs. Can be used towards any plumbing repairs after service call. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.