Soaking in a warm hot tub on a crisp, snowy Minnesota night is a magical experience. It is one of the greatest rewards of owning a hot tub in a northern climate. However, our harsh winters with their freezing temperatures, heavy snow, and biting winds demand a specific approach to care. Proper winter maintenance isn’t just about keeping the water clean; regular maintenance is essential for protecting your investment from costly damage and ensuring your wellness sanctuary is always ready when you need it.
This guide provides a complete overview of hot tub winter maintenance in Minnesota. We will cover everything from preparing your spa for the cold to troubleshooting common issues, ensuring you can relax and enjoy your hot tub safely all season long.
In Minnesota, winter isn’t just a season; it is a test of durability. Freezing temperatures can wreak havoc on a hot tub’s plumbing, pumps, and shell if it is not properly maintained. A small issue, like a minor leak or a tripped breaker, can quickly turn into a catastrophic failure, leading to frozen pipes and thousands of dollars in repairs. Diligent maintenance is your first line of defense.
Consistent winter care extends the life of every component of your spa. By keeping the water balanced, the cover protected, and the equipment running smoothly, you prevent the cumulative stress that cold weather puts on the system. This unforgiving climate requires proactive care to ensure your hot tub provides relaxation and wellness benefits for a decade or more.
A complete routine involves weekly water tests, monthly filter cleanings, and vigilant monitoring of your spa’s cover and temperature. It means knowing how to handle snow and ice, how to adjust chemicals in cold water, and when to call for professional help. It is about creating simple, repeatable habits that make winter ownership easy and stress-free.
Preparation is everything. Getting your spa ready before the first deep freeze sets you up for a successful season.
Before winter truly arrives, inspect your hot tub thoroughly. Check the cover for any tears or signs of waterlogging. Listen for any unusual noises from the pumps or heater. This is the ideal time to address any minor issues before they become major problems in sub-zero temperatures.
Draining and refilling your hot tub in the fall (ideally when temperatures are still above freezing) gives you a fresh start with clean water. Use a line-cleaning product before you drain to remove any buildup from the plumbing. Refill it, balance the water chemistry, and ensure the heater is working correctly. This single task makes winter water care significantly easier.
Gather your winter toolkit. This should include a high-quality test kit, all necessary balancing chemicals, extra filters, a non-abrasive sponge for cleaning the shell, and a soft broom or foam brush for removing snow from your cover. Having these supplies on hand prevents last-minute trips to the store in a snowstorm.
Stay on track with a simple checklist to guide your winter care routine.
Each week, test and balance your water chemistry. Check your sanitizer levels and add more as needed. Take a quick look at the water level and top it off if it has dropped. Visually inspect your cover and ensure it is securely fastened.
Once a month, remove and rinse your filters. For a deeper clean, soak them in a filter cleaning solution. This ensures proper water flow, which is critical for the heater to function correctly. A clogged filter can restrict flow and lead to a heating failure—a dangerous situation in the Duluth and Superior region.
At the start of winter, perform the drain-and-refill as mentioned above. At the end of winter, as temperatures rise, it is another great time to drain and refill the spa, clean the shell thoroughly, and inspect all components for any wear and tear that may have occurred during the harsh season.
Your spa’s primary defenses against the cold are its cover and its insulation.
A high-quality, well-fitting cover is the single most important accessory for winter. It traps heat where it belongs, which significantly reduces your energy costs. It also bears the weight of heavy snow and prevents ice from forming on the water’s surface. A broken or waterlogged cover is a massive energy drain and a safety hazard.
Sundance® Spas are known for their full-foam insulation, which fills the entire cabinet. This high-density foam locks in heat, protects plumbing from freezing, and adds structural support. Wiping down the acrylic shell above the waterline regularly prevents scum buildup and keeps your spa looking its best.
Cold temperatures change the way you need to manage your water chemistry.
Freezing temperatures and low water temperature can give you slower, less accurate readings on some test strips. It is important to bring your water sample inside and let it warm to room temperature before testing for the most accurate results.
Follow a consistent schedule. Test your water 2-3 times per week. Adjust pH and alkalinity first, as they affect the sanitizer’s efficiency. Add chemicals one at a time and allow the water to circulate for at least 20 minutes between additions.
Maintain your sanitizer (chlorine or bromine) levels within the recommended range, typically 1-3 ppm for chlorine and 3-5 ppm for bromine. Consistent levels are crucial for keeping the water safe and clean, even if you are using the hot tub less frequently.
If you perform a drain and refill in the late fall, you should not need to change the water again until spring. If a mid-winter change is necessary, you must work quickly on a day when temperatures are at their warmest—ideally above freezing to prevent lines from freezing. For most, waiting until spring is the safest option.
Don’t get caught empty-handed when a snowstorm hits.
Ensure you have a full supply of your sanitizer, pH increaser and decreaser, alkalinity increaser, and shock. It is also wise to have a spare filter and a line-cleaning product for your next water change.
Store your chemicals in a cool, dry, and well-ventilated area where they will not freeze. A garage or basement storage room is ideal. Never store different chemicals on top of one another, and keep liquids and solids separate.
The Hot Tub Store in Hermantown carries a full line of premium water care products specifically chosen for our climate. Our experts can help you select the right products and provide advice on winter water management.
Your filters work overtime in the winter to keep the water clear and the heater functioning.
Rinse your filters weekly or bi-weekly with a hose. Perform a deep chemical soak once a month. This is more frequent than summer maintenance, but it is critical because a clean filter ensures strong water flow to prevent freezing.
Bring your filters inside to clean them. Use a utility sink or bucket in your garage or basement. Rinsing filters outdoors with a hose is not feasible when it is below freezing. Having a spare set of filters allows you to rotate them, so one set can be cleaning and drying while the other is in the spa.
Replace your filters every 12-18 months, or sooner if you notice signs of wear, such as flattened pleats or cracked end caps. A worn-out filter will not perform effectively, putting your hot tub at risk during the winter.
Knowing how to spot trouble early can save you from a disaster.
The most common issues are “flow” errors caused by dirty filters, heater failures, and tripped GFCI breakers. Power outages are also a significant concern in the Northland.
If your heater fails, the first step is to check your filter. A dirty filter is the number one cause of flow errors that shut down heaters. If the filter is clean, check your breaker. If the problem persists, place a small, portable space heater inside the cabinet (away from any plumbing) to provide temporary heat and call a professional immediately.
If you suspect a pump is not working, the heater has failed, or you have a significant leak, call for service right away. In freezing temperatures, time is of the essence. The expert technicians at The Hot Tub Store have the experience to diagnose and fix winter problems quickly.
You don’t have to manage winter maintenance alone. We are here to help.
We offer comprehensive weekly and bi-weekly maintenance programs where our technicians handle all your water balancing, cleaning, and system checks. This service provides peace of mind, knowing your spa is professionally cared for all winter.
Our team is your winter wellness partner. We provide expert advice over the phone and offer prompt, reliable on-site service when you need it most. We understand the urgency of winter repairs and prioritize getting your spa back to perfect working order.
We offer emergency repair services to address critical issues like heater failures or frozen components. Our factory-trained technicians can service all makes and models, carrying a wide inventory of parts to ensure a fast and effective fix.
A few final habits can make all the difference.
Check your spa daily. A glance to ensure the temperature is holding and the water is circulating can prevent a catastrophe. Keep the path to your hot tub clear of snow and ice for safe access.
Keep your temperature set and stable. It is more energy-efficient to maintain a constant temperature than to lower and raise it frequently. Use a thermal blanket that floats on the water’s surface under your main cover to add an extra layer of insulation.
Our website features helpful articles and guides, and our in-store experts are always available to answer your questions. We are committed to empowering you with the knowledge to be a confident and successful hot tub owner.
Ready to make this your easiest hot tub winter yet? Get in touch with us.
You can reach us by phone, through our website’s contact form, or by stopping into our showroom. We are always ready to schedule a service call or answer your maintenance questions.
Our showroom is conveniently located at 4881 Miller Trunk Hwy, Hermantown, MN 55811. We invite you to visit us to stock up on winter supplies and speak with our friendly team.
For over 25 years, we have helped Northern Minnesota residents enjoy their hot tubs through the harshest winters. Our combination of premium products like Sundance® Spas, expert knowledge of our climate, and dedicated professional service makes us the region’s most reliable resource for winter care.
Ready to keep your hot tub running perfectly all winter long in Minnesota? Do not let the fear of freezing temperatures keep you from enjoying your backyard oasis. With the right preparation and support, winter can be the best season for hot tubbing. Contact The Hot Tub Store today for all your winter maintenance needs.
