Amazon.com and HomeDepot.com publish customer reviews for ScaleBlaster products, as of 2015. On Amazon.com, the average rating for two ScaleBlaster systems, including the 75 and 175 models, were both 3.5 out of five stars. Reviewers on HomeDepot.com scored model 75 slightly better.
Positive comments on Amazon.com mention fast results, ease of installation and reasonable prices for the device. Negative reviews highlight poor performance and expense. On Home Depot.com, supporters state that they notice significant differences in scale build-up on shower heads, sinks, faucets and dishwashers. However, some reviewers see no difference in the amount of scale in their homes. Others say there is a lack of scientific evidence to support claims about ScaleBlaster's effectiveness.