If the spa heater is not giving enough heat, it means a water flow problem from dirty filters or partially closed valves or clogged pumps. It could also be the spa cover allowing heat to escape.
A hot tub will always heat up faster with jets. This is because it disburses the heated water throughout the tub more efficiently and breaks up any cold pockets hanging around in the pipes. And you can also put a cover over the hot tub with the heater and jets going to trap the heat inside.
Therefore, you cannot make the hot tub hotter than 104 degrees as the maximum temperatures for such models. However, by adding a water heater or running the pumps all the time, the water temperature can quickly rise above 104 degrees. The recommended soaking temperatures for an adult should not exceed 104 degrees.
If your hot tub is located inside, and the air temp is around 76 degrees, it will take about 4 hours to heat up your spa to 100 degrees. The lower the outside temps the longer you will have to wait before your spa is ready. Therefore, by leaving the cover on while it's heating up you can help it warm up faster.
So, what is the ideal hot tub temperature when not in use? A good rule of thumb to follow is always keeping your hot tub's temperature 5 degrees below what it usually is.
Even considering these factors, a 110v hot tub will heat by one degree every 30 minutes to one hour. 220v hot tubs heat faster, at around one degree every 10 to 20 minutes.
We strongly advise against home spa water temperatures in excess of 104 degrees F. At that temperature it is dangerous to one's health, and at 110 degrees F a spa can become dangerous to your life.
Hot tub water temperatures should never exceed 104 degrees Fahrenheit. A temperature of 100 degrees is considered safe for a healthy adult. Special caution is suggested for young children. Excessive drinking during hot tub use can cause drowsiness which could lead to unconsciousness and subsequently result in drowning.
Now the U.S. Consumer Product Safety Commission is cautioning that drinking and hot tubing do not mix well either. According to CPSC staffers, the use of hot tubs at water temperatures above the normal body temperatures can cause drowsiness which may lead to unconsciousness and subsequently result in drowning.
The condition of your hot tub's components such as the water heater, pump, cover and even the jets affect how quickly your hot tub will reach its ideal temperature. If some of these components are wearing out or damaged, it can take much longer to reach the temperature you desire.
Covering your hot tub with plastic wrap or a tarp is disastrous for your hot tub cover. Not only could it become waterlogged much quicker, but it can also magnify the sun's rays and trap heat. That can cause your cover's cores to melt.
You should expect this to be hot in about 20 hours. Bigger spas, different heaters and winter mains water will all have longer or shorter heating times. A final point - hot tubs are designed to be hot 24/7.
If your tub won't heat past 37* then you have probably switched put it into low range mode. All conquest Spa models have dual temperature ranges (high and low). The arrow next to the word range on your control panel will tell you what range your hot tub is in – arrow pointing up for high and down for low.
By default filter modes are 2 hours in the morning and 2 hours in the evening, the rest of the time the hot tub will use the insulation to keep the spa warm and retain heat. Economy is a good setting for those who use the hot tub daily.
Low water levels can not only cause major water flow issues, but can also cause your heater to shut down as well. Needless to say, with no heater, sitting in your hot tub will not be so hot, so make sure your hot tub is always topped up to optimal levels.
The maximum temperature of any given hot tub is almost always 104 degrees. On the other hand, most hot tubs have a minimum temperature of about 85 or 90 degrees. There are exceptions, though. Some hot tubs, such as those which use AnyTemp® spa technology, can reach temperatures as low as 62 degrees.
Most hot tubs can be set as low as 26°C, but this would only be appropriate if it is a hot summers day and you want to use your tub to cool off. The maximum safe recommended hot tub temperature is 40°C, as anything higher than this can be dangerous, posing serious health risks to users.
Health Benefits
The heat widens blood vessels, which sends nutrient-rich blood throughout your body. Warm water also brings down swelling and loosens tight muscles. And the water's buoyancy takes weight off painful joints. A dip in the hot tub might also help your mental state.
UNDERSTANDING THE RISKS OF OVERUSE
Since the water in a hot tub is a higher temperature than your normal internal temperature, staying in a hot tub too long can cause you to overheat and experience symptoms like light-headedness, dizziness, or nausea.
We've mentioned water temperature above, and you may be wondering, “what is the ideal water temperature?” We suggest keeping your hot tub between 97 and 104 degrees Fahrenheit in the winter. This is because the colder it is outside, the longer it will take for a hot tub to heat up.
The spa pumps heat the water between by approx. 1ºC ‑ 1.5ºC an hour, so they can take 24‑48 hours to heat from cold. This may take longer in colder ambient temperatures.
Temperature Limits
It is important to ensure that you stay under the recommended Maximum Temperature for Hot Tubs, which is 40°C/104°F. By exceeding the 40°C/104°F recommended temperature limit, you are putting your body at risk – let's all stay safe so we can carry on enjoying our tubs!