By Cody Wise, founder of Wise Property Services, Calgary. Updated November 2026.
Quick Answer
A hot tub can pass the test strip and still cost you a star because a strip reads only pH, alkalinity and sanitizer. It cannot read what bathers, sunscreen and body oils leave behind, and guests review the feel, smell and look of the water. The fix is a drain schedule, not another bottle: every three months at the minimum on a rental, monthly if the tub is booked most of the month.
In This Guide
- What A Guest Actually Reviews
- What A Test Strip Can And Cannot Measure
- Why Draining Fixes What Balancing Cannot
- Why The Schedule Decides, Not The Strip
- What Happens Between Drains
- The Paper Trail
- A Two Minute Guest Experience Check
- Calgary Makes It Worse
- What It Costs In Calgary
- Frequently Asked Questions
What A Guest Actually Reviews
A guest does not review your water chemistry. They review how the water felt, how it smelled and whether it looked clear when they climbed in. Those are sensory judgements made in the first ten seconds, and they are formed long before anyone reads a number.
That gap is the whole problem with hot tubs on rental properties. A test strip is a legitimate tool. It tells you whether the water is in range for pH, alkalinity and sanitizer. It does not tell you whether the water is pleasant. A tub can be in range on every line of the strip and still feel slick, smell flat or look dull, and the review reflects the experience, not the reading.
What A Test Strip Can And Cannot Measure
| A Strip Reads | A Strip Does Not Read |
|---|---|
| Sanitizer level | Oils, lotions and sunscreen left by earlier bathers |
| pH | Total dissolved solids building up in the water |
| Total alkalinity | Biofilm in the plumbing |
| Sometimes calcium hardness | How the water feels on the skin |
| At the moment of the test | The smell that develops as spent sanitizer combines with contaminants |
Sundance Spas Canada, a manufacturer, lists a pH of 7.4 to 7.6, total alkalinity of 80 to 100 ppm and a sanitizer level of 2 to 4 ppm as its targets, with daily testing and a drain every three to four months. Notice that the drain is on the list for a reason. Chemistry maintains water. It does not renew it.
Why Draining Fixes What Balancing Cannot
Chemicals dissolve into the water and stay there. Balancing adjusts the water you already have. Draining replaces it. That is the difference, and it is why a tub that tests perfectly can still feel wrong. The material that a strip cannot see is exactly the material a drain removes.
A drain is also the only time the shell can be power washed and the filters rinsed and inspected properly, because the water is out of the way. That is where biofilm and scale get dealt with. The details of what the visit includes are in how much a hot tub drain and refill costs in Calgary.
Why The Schedule Decides, Not The Strip
I run hot tubs on my own Calgary rentals through Wise STR Group, and the rule is simple. The tub is drained, balanced and refilled on a schedule, and the schedule does not wait for a bad review to tell us it is due. Reacting is the expensive way. The host who reacts to a complaint pays for it twice, once in the fix and once in the star.
| Booking Level | Drain And Refill |
|---|---|
| Booked most of the month | Every month |
| Booked about half the month | Every 6 to 8 weeks |
| Booked a few weekends a month | Every 3 months at the minimum |
The full reasoning and the between guest checklist are in how often to drain an Airbnb hot tub.
What Happens Between Drains
Weekly water care does the rest. Test, correct and write it down. The order matters: alkalinity first, then pH, then sanitizer, because alkalinity moves pH and pH changes how the sanitizer behaves. If you correct them in the wrong order, the numbers chase each other all week. I wrote the reasoning in the water chemistry order guide.
Treat the cover, the filter and the smell as part of the test. A filter that stays dull after a rinse is a flag. A cover that does not seal lets heat and debris in. A smell that returns after shocking is a sign the water has reached its limit. None of these show on a strip.
The Paper Trail
The written report is the part hosts skip and then miss. When a guest says the tub felt off, you want a dated record of what the water read and what was done about it. That record helps with the platform, with a co-host and with an insurer. It also turns a vague complaint into a specific question you can answer.
- Date and time of the visit
- Readings before and after balancing
- What was added and why
- Filter and cover condition
- Anything flagged for the next visit
The City of Calgary requires short term rental operators to hold a licence and liability insurance that references home sharing. Its licence requirements page does not mention hot tubs, so ask your insurer what it expects for a tub and keep the reports with the policy.
A Two Minute Guest Experience Check
You do not need a lab to catch what a strip misses. Before a guest arrives, lift the cover and run through this list. It takes two minutes, and it checks the things a guest will notice first.
- Look. Can you see the bottom of the tub clearly? Any haze, floating particles or a ring at the waterline?
- Smell. Fresh and neutral is right. A sharp chemical smell or a musty one means the water needs attention.
- Feel. Put a hand in. Slick, soapy or gritty water is a sign of residue the strip will not show.
- Listen and watch. Foam that stays after the jets stop is a sign the water is loaded.
- Check the temperature. It should match what the listing promises.
- Check the cover. It should seal, lift easily and be clean on the underside.
If any line fails, do not rely on the strip to talk you out of it. Treat the water, and if it will not correct, book the reset. A guest who finds a tub that looks, smells and feels right will never write about the chemistry.
Calgary Makes It Worse
Calgary tap water is hard. The City reports a hardness of 141 to 274 mg/L in its 2025 data, so calcium arrives with every fill and tends to build in a tub that goes too long without a drain. That is part of why a tub can look dull even when the sanitizer reads fine. The full explanation is in Calgary water is hard, and what that does to your hot tub.
What It Costs In Calgary
A full drain, power wash, refill and balance with a written report is $200, or $175 for plan members. A water test and balance is $45. Plans start at $279 a month, run month to month and cancel on 7 days notice. Care Plus at $399 a month includes a drain every three months and is the plan most active rentals run. Full Care at $499 a month includes a drain every month.
The details are on the drain and refill page and the Airbnb hot tub maintenance page. If the tub is on your listing, treat it as a scheduled line item, not an emergency.
Frequently Asked Questions
Can A Hot Tub Pass The Test Strip And Still Be Bad?
Yes. A strip reads pH, alkalinity and sanitizer. It does not read oils, lotions, dissolved solids or biofilm, which are what make water feel slick, smell flat or look dull.
Why Does My Hot Tub Smell When The Chemicals Are Balanced?
A smell usually means spent sanitizer has combined with contaminants. The strip can show a correct reading while the water still smells. Shock as the label directs, and drain and refill if the smell returns.
How Often Should A Hot Tub Be Drained?
A manufacturer such as Sundance Spas Canada recommends every three to four months for home use. A rental should be drained every three months at the minimum, and monthly if it is booked most of the month.
Do Hot Tub Problems Show Up In Airbnb Reviews?
They can. Guests tend to mention how the water felt, smelled and looked. A tub that tests in range can still draw a comment, which is why a drain schedule matters.
What Should A Hot Tub Service Record Include?
The date, readings before and after balancing, what was added, the condition of the filter and cover, and any flags for the next visit.
What Does A Hot Tub Drain And Refill Cost In Calgary?
$200 flat, or $175 for plan members. It covers the drain, power wash, filter rinse, fresh fill, balance, startup check and a written report.
How Often Should I Test My Hot Tub?
Weekly at the least, and daily if you can. Sundance Spas Canada recommends daily testing. A rental should also be checked at every turnover.
Is It Better To Drain Between Guests Or On A Schedule?
A schedule. Draining at every checkout is rarely needed. Weekly care, a check at each turnover and a drain every one to three months keeps the water good without constant resets.
Does Calgary Water Affect Hot Tub Water Quality?
Calgary water is hard, with a reported hardness of 141 to 274 mg/L in 2025. Calcium arrives with every fill, so long runs without a drain tend to cause haze and scale.
Who Services Hot Tubs For Airbnb Hosts In Calgary?
Wise Property Services provides hot tub care for Airbnb hosts and homeowners across all four quadrants of Calgary, with plans from $279 a month and a $200 drain and refill.
Related Pages
- Airbnb hot tub maintenance in Calgary
- Hot tub drain and refill
- How often to drain a hot tub
- Hot tub water chemistry order
- Hot tub care plans
