Spring is the ideal time to reset your spa with a complete hot tub water change. After months of winter use, even well-maintained water can become overloaded with dissolved solids, chemicals, and contaminants that impact performance and clarity.
A proper drain, clean, and refill doesn't just improve water quality, it's a key part of hot tub spring maintenance that helps extend the life of your equipment and keeps your system running efficiently.
Why a Hot Tub Water Change Is Essential In Spring
Over time, hot tub water accumulates:
- Total dissolved solids (TDS)
- Chemical byproducts
Even with consistent balancing, these build up to a point where water becomes difficult to manage. Cloudiness, foaming, and inconsistent sanitizer levels are all signs it’s time for a change.
A fresh fill gives you:
- Easier water balancing
- Improved filtration efficiency
- Better sanitizer performance
- Cleaner, clearer water
How Often Should You Change Hot Tub Water?
Most manufacturers recommend a hot tub water change every 3-4 months, depending on usage and hot tub size. For most households, this lines up perfectly with seasonal maintenance, making spring the ideal time to drain and start fresh.
How to Drain and Refill Your Hot Tub (Step-by-Step)
1. Turn Off Power to the Hot Tub
Always shut off the power at the breaker before starting. This protects your pump and heater from damage during the draining process.
2. (Pro Tip) Flush the Plumbing Lines First
Before draining, use a line flush product to remove buildup inside the pipes.
Why this matters: Biofilm and debris inside plumbing can contaminate your fresh water immediately if left untreated.
3. Drain the Hot Tub Completely
Use the built-in drain valve or a submersible pump to speed up the process.
- Typical drain time: 1-3 hours, depending on size
- Direct water away from your landscaping
4. Clean the Shell and Interior
Once empty, wipe down the shell with a non-abrasive cleaner.
Focus on:
- Waterline buildup
- Seats and corners
- Jet openings
Avoid household cleaners, they can cause foaming when refilled.
5. Clean or Replace Your Filters
This one of the most overlooked steps in hot tub spring maintenance.
- Rinse filters thoroughly with a hose
- Use a dedicated filter cleaner for deep cleaning
- Replace filters if they show wear or reduced flow
Need replacement filters? Here are some options.
6. Refill with Fresh Water
Place your hose in the filter compartment (not the open shell).
Why? This helps prevent air locks in your plumbing system.
If you're in a hard water area, use a hose pre-filter to reduce:
- Calcium
- Metals
- Mineral staining
Grab your pre-filter now to make refilling easier.
7. Balance Your Water Chemistry
Once refilled, test and adjust your water:
- pH: 7.2 - 7.8
- Total Alkalinity: 80 - 120 ppm
- Sanitizer (Chlorine/Bromine): As recommended
Let the system circulate for a few hours before use.
Water testing kits will help you locate problems fast.
Hot Tub Spring Maintenance Checklist
A water change is the perfect time to inspect your entire system:
- Check jets for blockages or buildup
- Inspect pump seals and unions for leaks
- Examine your cover for cracks or waterlogging
- Confirm the pump and heater operation
Catching small issues early can prevent expensive repairs later.
Common Mistakes to Avoid When Changing Hot Tub Water
Skipping key steps can undo all your effort. Watch out for:
- Not flushing plumbing lines before draining
- Refilling without cleaning filters
- Using soft water from your home water softener
- Turning the heater on too early (before proper water flow)
- Using household cleaners that cause foaming
Final Thoughts: Start Fresh for the Season Ahead
A proper hot tub water change is one of the simplest ways to improve water quality, protect your equipment, and get the most out of your spa.
By making it part of your regular hot tub spring maintenance, you're not just refreshing your water... you're setting your entire system up for a smooth, trouble-free season.