If you’ve just filled your SaluSpa for the first time and you’re sat there checking the display every ten minutes wondering why it’s still not warm yeah, that’s normal, and you’re not doing anything wrong. SaluSpa heating time catches a lot of new owners off guard because it’s slower than a bath and slower than most people expect for something marketed as a “hot tub.” The honest answer to how long does SaluSpa take to heat up depends on a handful of things you can mostly control, and a couple you can’t. Let’s go through it properly.
How Long Does SaluSpa Take to Heat Up?
Short answer first, because I know that’s what you actually want: most SaluSpa models take somewhere between 24 and 48 hours to go from a cold tap fill to a comfortable soak temperature, usually around 40°C (104°F is the max on most models). That’s a wide range though, and where you land in it depends on a few real factors.
What Actually Affects SaluSpa Heating Time
| Factor | Effect on Heating Speed |
|---|---|
| Initial water temperature | Cold tap fill in winter takes noticeably longer |
| Outside/environmental temperature | Cold air pulls heat out faster than the heater can add it |
| Water volume | Bigger tubs (6-person models) take longer than 2-person ones |
| Heater power and efficiency | Older or smaller units heat slower per hour |
| Cover use | Leaving the lid off mid-heat basically undoes your progress |
| Humidity and weather conditions | Damp, windy days slow things down even with the cover on |
Most SaluSpa heaters raise the water roughly 1–2°F (around 0.5–1°C) per hour under normal conditions. So if you’ve filled with cold mains water at, say, 10°C, and you want to reach 38-40°C, you’re realistically looking at a full day, sometimes closer to two, especially in a UK autumn or winter.
Average SaluSpa Heating Hours by Season
- Summer: roughly 12–24 hours, since the starting water temperature is already warmer
- Spring/Autumn: 24–36 hours is fairly typical
- Winter: 36–48 hours isn’t unusual, especially overnight when temperatures drop
This is one of those things SaluSpa doesn’t shout about in the marketing, but it’s just physics small electric heaters warming a few hundred litres of water against constant heat loss to the air around it.
SaluSpa Temperature Settings and Control
Most models let you set a target temperature up to 40°C (104°F), and the unit will run the heater automatically until it hits that number, then cycle on and off to maintain it.
| Setting | What It Does |
|---|---|
| Temperature dial/display | Set your desired water temperature |
| Auto-heat mode | Heater kicks in automatically below target |
| Filter + heat combo | Some models only heat while filtering worth checking your manual |
| Power saving timer | Schedule heating in advance so it’s ready when you want it |
That power saving timer is genuinely useful and people forget it exists. If you know you’ll want a soak Saturday evening, set it heating Friday morning and you won’t be standing there annoyed it’s still lukewarm.
How to Heat Your Hot Tub Faster
There’s no magic trick to bypass the physics, but a few things make a real difference:
- Keep the cover on at all times when not in use this is the single biggest factor people get wrong
- Fill with warm water if your tap can manage it, rather than starting from stone cold
- Avoid opening the lid repeatedly to check the temperature every peek lets heat escape
- Position the tub out of direct wind, since wind chill affects the water surface more than people expect
- Use the power saving timer so it’s already heating well before you need it
- Check the filter isn’t clogged, since some models reduce heating efficiency when the filter’s blocked
SaluSpa Not Heating? Quick Checks
If it’s been well over 48 hours and the temperature genuinely hasn’t moved, something’s likely wrong rather than it just being slow.
| Issue | What to Check |
|---|---|
| Heater not engaging | Confirm the unit is set to “heat” mode, not just filter |
| Power supply | Check it’s plugged directly into a grounded socket, no extension cords |
| Cover left open | Even briefly, this resets a lot of progress |
| Faulty heating element | If nothing else explains it, may need a warranty check |
| Low water level | Some units won’t heat below a minimum water line |
Hot Tub Heating Cost
Running the heater for a day or two does add to your electricity bill, though it’s not as dramatic as people assume once it’s up to temperature and just maintaining.
- Initial heat-up uses the most energy, since the heater runs near-constantly
- Once at target temperature, it cycles on and off, using considerably less
- A well-insulated cover cuts running costs noticeably over weeks of use
- Running costs vary by model, but expect higher usage in the first 1–2 days than any day after
FAQs
How long does SaluSpa take to heat up from cold?
Usually 24–48 hours depending on weather, water volume, and starting temperature.
Why is my SaluSpa not heating at all?
Check it’s in heat mode, plugged in directly, and the cover hasn’t been left open.
Does cold weather really slow down heating that much?
Yes, cold air constantly pulls heat from the water, so winter heating takes noticeably longer.
Can I speed up the heating process?
Keep the cover on, avoid opening it often, and use the power saving timer to start early.
Is it normal for heating costs to be higher on day one?
Yes, the heater works hardest during the initial warm-up, then costs drop once it’s maintaining temperature.
Conclusion
There’s no getting around it SaluSpa heating time is slower than people expect, usually a day or two depending on the season and your starting water temperature. The good news is most of what slows it down is within your control: keep the lid shut, use the timer to heat in advance, and don’t keep checking by lifting the cover every hour. Plan around it rather than fighting it, and the heat-up time stops being annoying and just becomes part of the routine. If you’re after a model with stronger heating performance for UK weather, take a look at our inflatable hot tub range, including the Corsica and Tahiti.
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