Helix's support centre lists a 120-night sleep trial on mattresses, while some Helix marketing pages show 100 nights. Trial length has varied by model and promotion, so the number that matters is the one shown at checkout on your order — screenshot it.
THE 30-NIGHT GATE. Helix requires a minimum of 30 nights before you can request a return. This is standard for foam and hybrid beds and is not negotiable.
NO RETURN FEE. Helix states it covers pickup and return costs, so a straight return should not cost you anything out of pocket. Collection is handled through removal partners rather than by you shipping the mattress back.
HOW TO START. Contact Helix support once the 30 nights have passed, with your order number and delivery date. Ask the agent to confirm in writing the trial end date they have on file, so there is no dispute later.
WHAT IS NOT PUBLISHED. Helix's support articles do not spell out refund timing or a full exclusions list in the text we could verify, and trial length differs by product category (mattresses versus bedding and bases). Confirm the terms for anything bundled with the mattress before you order.
PRACTICAL ADVICE. Helix sells by sleep-quiz match, so if the firmness is wrong the more useful call is often an exchange to a different Helix model rather than a refund — you keep the comfort-match support without restarting your search.