Sauna vs. Hot Tub Maintenance: Why Saunas Win

You may have heard the saying "the best pool is your neighbor's pool". Well, a hot tub is essentially just a small pool.

Hot tubs are wonderful when they're working. But keeping them working? That's a part-time job you didn't sign up for.

Saunas are a different story. We've owned and operated NorthUp saunas for years, and the maintenance difference still catches people off guard. Here's the honest breakdown.

What hot tub maintenance actually looks like

We're not here to bash hot tubs. They're truly great when they're dialed in. But "dialed in" takes real effort, and you should know what you're getting into.

Weekly (30 – 60 minutes)

Test and balance the water chemistry: pH, alkalinity, sanitizer levels. If the numbers are off, you're adding chemicals to bring them back in range. You'll also clean the waterline and check the filter for debris. Some owners shock the water weekly, others every other week, but it's a regular task either way. 

Monthly (1 – 2 hours)

Deep clean or replace your filters. Rinse them with a hose, soak them in filter cleaner, inspect for wear. You'll also want to check for biofilm buildup in the plumbing (bacteria love hiding in there, even in properly sanitized water). Many hot tub owners add a pipe flush product monthly to keep the lines clean.

Quarterly (half a day)

Drain the entire tub. Scrub the shell. Clean the jets. Refill with fresh water. Once it's refilled, you're back to balancing the chemistry from scratch. Depending on your water source, this can take a couple rounds of testing and adjusting before the levels stabilize.

Annually

Inspect the cover for water saturation and cracks (replacement covers run $300 – $500). Check the heating element, pump, and electrical connections. In cold climates, winterizing is its own process if you're not running it year-round. And if you are running it year-round, the electricity bill reflects that.

What sauna maintenance actually looks like

Here's where things get dramatically simpler. Before jumping into our routine, your #1 best friend for maintaining a sauna is simply using it. Hot temperatures are the enemy of moisture, mold, mildew, and bacteria. We also like to leave our sauna hot for 15 – 30 minutes after we're done to give it a nice bake and dry everything out.

After every use (~1 – 2 minutes)

•       Wipe down the benches with a wet towel.

•       Sweep the floors of any debris as needed.

•       Empty the ash pan (if using a wood-fired stove).

Bi-weekly or monthly (~10 minutes)

•       Scrub the floors with a mild detergent.

•       Clean the siding with an ammonia-free plastic cleaner as needed. Wipe down with a microfiber towel.

Annually (~2 hours)

•       (Optional) Lightly sand the benches with fine grit sandpaper to remove sweat stains and restore that lovely cedar smell.

•       Sweep the chimney clean (if using a wood-fired stove).

That's the whole list. No chemicals. No pH testing. No draining and refilling. Just wipe, sweep, and occasionally sand.

The real cost: saunas vs. hot tubs

Beyond the time commitment, the annual costs tell the story pretty clearly.

The typical hot tub owner spends $1,000 – $2,000 per year on maintenance and operating costs. A sauna owner? Usually under $500, and almost all of that is electricity or firewood.

Zero chemicals required

This is the one that surprises people.

Saunas don't need chemicals because they operate at temperatures that naturally inhibit mold, mildew, and bacterial growth. The heat does the sanitizing for you. A hot tub, on the other hand, is a warm, wet environment that bacteria absolutely love. Without constant chemical treatment, you're looking at algae, biofilm, and potentially unsafe water quality.

With a sauna, the maintenance philosophy is simple: use it.

Let it bake dry and wipe it down occasionally. That's it.

Which lasts longer?

A well-maintained hot tub typically lasts 10 – 15 years before major components start failing (pumps, heaters, shells cracking, plumbing leaks). Repair costs escalate as the unit ages, and at some point, replacement becomes more cost-effective than fixing.

Saunas are fundamentally simpler machines. There's a heat source and a structure. Finnish saunas have been built to last generations. Even modern saunas with proper materials and ventilation can easily last 20 – 30 years with minimal upkeep. Fewer moving parts to fail, no water system to corrode.

We build our NorthUp saunas with that longevity in mind: quality cedar, hand-selected stoves, and thoughtful ventilation design. The goal is a sauna that gets better with age (that cedar smell after a fresh sand is something else).

Who's managing your hot tub when you're not there?

This one matters if you travel, have a cabin, or own a rental property. A hot tub can't just sit there. The water chemistry drifts, bacteria builds, and you come back to a green, foamy mess (or worse, a frozen, cracked one). Most people either hire someone to check on it weekly or drain it entirely before they leave, then go through the whole refill and rebalance process when they get back.

A sauna? Lock the door and leave. It can sit unused for weeks or months with zero consequences. No water to go bad, no chemicals to drift, no pump to seize up. Come back, fire it up, and you're good.

The bottom line

Both saunas and hot tubs can be great additions to your home. But if maintenance and long-term cost matter to you, the sauna wins by a wide margin.

Almost no chemicals. A fraction of the electricity. A few minutes of upkeep instead of an hour. And a product that can last decades instead of one that's on the clock from day one.

That's more time relaxing and enjoying your sauna, and less time keeping it running.