No , the only way to soften the water is using the ion exchange process to exchange the calcium ions with sodium ions; hence it requires a Salt , however there is a salt-free water conditioner that uses a unique process called TAC (template-assisted crystallization) to condition your water without needing electricity or salt. TAC works by manipulating the water's mineral content, causing the minerals to structure in a manner that won't stick to pipes or appliances. This helps to prevent hard water stains and scale build-up, leaving you with clean, conditioned water for all your household needs.