Begin with the right instructions and test kit
Keep the spa manual, treatment-product labels, and a compatible test kit together. Write down the recommended ranges and testing schedule for your system. Do not combine instructions from different chemical systems or improvise doses.
HealthLink BC's residential guidance recommends a kit that measures the disinfectant in use and pH. Clear water alone does not replace a test.
Make checks part of using the tub
Check the water before getting in and follow the manufacturer's schedule, including additional checks after heavy use. Record the result and any treatment so another household member knows what has already been added. If readings are outside the recommended range, correct the problem and confirm suitable readings before use.
The CDC's home water-testing guidance explains testing methods and the role of disinfectant and pH. Use current product directions and professional advice for the treatment system installed in your tub.
Keep a simple care log
- Date and time of the check.
- Test results and whether the tub was used heavily.
- Product added, amount, and follow-up reading.
- Filter cleaning or replacement.
- Water changes, unusual appearance, and recurring error messages.
This log is useful when asking a technician or water-care specialist for help. Bring the product names and spa model rather than relying on a description such as “the usual chemicals.”
Plan supplies and water changes for winter
Keep products in their original labelled containers and store them as directed, away from children and incompatible products. Do not mix chemicals. Check your stock and test-kit condition before a holiday or extended absence.
Arrange filter care and water changes according to the manufacturer instructions and actual use. Plan a refill with weather, access to water, and heating time in mind. Before draining, confirm local disposal and water-use requirements. If freezing conditions make the work uncertain, arrange professional help.
Know when to stop and get help
Do not use the tub when water quality is uncertain. Persistent cloudy water, recurring out-of-range results, or a fault that interrupts circulation calls for investigation. Loss of heat or circulation during freezing weather needs prompt attention from a qualified technician; this site does not provide emergency dispatch.
See our service and repair guide for the information to gather, and the winter ownership guide for questions about absences and outages. If closing the tub for the season, follow the exact winterization procedure or have it done professionally.
Winter water-care questions
Does clear hot tub water mean it is safe to use?
No. Appearance does not establish disinfectant or pH levels. Use a compatible test kit and the current guidance for your treatment system before deciding the water is ready.
How often should I change the water in winter?
Use the schedule for your model and treatment system, adjusted for use and water condition with professional advice. Plan draining and refilling around safe working conditions; do not postpone necessary care simply because it is cold.
Is winterization the same as normal winter maintenance?
No. Winter maintenance keeps an operating tub cared for. Winterization prepares a tub to remain out of use and requires the exact manufacturer's procedure. Simply switching it off or emptying the visible water is not a substitute for that procedure.
Explore specific care tasks and water problems
Sources and further reading
Sources checked November 11, 2026. Use the current instructions for your own model and confirm local requirements for your property.