Dhamer Plumbing Web Coupons   Preventive Sewer Rodding $20.00 OFF MUST BE SCHEDULED ONE-WEEK IN ADVANCE. NOT VALID WITH ANY OTHER OFFER OR COUPONS. Water Heater Replacement $15.00 OFF NOT VALID WITH ANY OTHER OFFER OR COUPONS. Service Call "Repair" $10.00 OFF NOT VALID WITH ANY OTHER OFFER OR COUPONS. Sump Pump Replacement $15.00 OFF NOT VALID WITH ANY OTHER OFFER OR COUPONS.   Please Print And Present At Time Of Service. Coupons Cannot Be Combined With Any Other Offer.