Wairarapa Laundrette on Renall St was also targeted by thieves for its coin boxes last week.
Doug Flemming, who co-owns the laundromat, was un-available to speak to the Times-Age but an employee said it was the second time the laundromat had been targeted.
Senior Sergeant Mike Sutton said: "We are investigating these thefts and if anyone has any information which could assist this investigation please contact Wairarapa police or Crimestoppers.
"We also ask that any places of business that do operate coin operated machines be mindful of the security they have around them. We recommend you monitor their daily use and remove money from these machines on a daily basis to minimise the potential for money to be taken."