How to use your Nuby RapidHot: The complete guide

So, you’ve just got your hands on a new RapidHot and you’re eager to give it a go. But wait, you’re not quite sure where to start? Well, you’ve landed in the right place.

This guide will take you through everything you need to know from putting it together to making a feed, plus tips on descaling and cleaning it.

Putting together your RapidHot

Safety warning: DO NOT lift your RapidHot by the water tank. Now, let’s assemble your new favourite baby formula preparation machine:

1. Take the filters, metal drip tray and plastic water filter out of the water tank.
2. Place the water collector into position first, then place the metal drip tray on top.
3. Before using a filter for the first time, submerge it into a bowl of cold tap water for one minute.
4. Once it’s soaked, discard the water and put the filter into the filter holder.
5. Fit the filter holder into the water tank with the wider part facing downwards.
6. Fill up the water tank, attach it securely to the unit, and you’re good to go.

What your RapidHot icons mean

Your RapidHot is one clever machine, so let’s decode those symbols:

Up and Down Arrows – Scroll through different options on the control panel.

Child Lock Icon – Activates automatically after 30 seconds. Press to unlock. To disable it completely, press the up and down arrows together for two seconds until it beeps. Repeat to restore.

Water Drop Icon – Press to dispense water, press again to stop mid-flow (only works when the child lock is off).

Water Volume Icon – Press, then use the up/down arrows to choose your desired amount of water. Press, then use the up/down arrows to choose your desired amount of water. Switch between oz and ml by pressing the up button and water volume icon at the same time. Repeat to switch back.

Room Temperature Icon – Select this for room temperature water. Hit the water drop icon to dispense.

Boiling Water Icon – Auto set to dispense at 100°C. Press the child lock icon first, then the boiling water icon. When the child lock turns red, you can choose the volume. Ready? Press the child lock again and then the water icon to dispense.

Temperature Unit Switch – Press then use the up and down arrows to select desired temperature. Switch between Celsius and Fahrenheit by pressing the down button and temperature icon at the same time. Repeat to switch back.

How to make a feed with your RapidHot and RapidCool

💡 Quick tip: If your RapidHot hasn’t been used in six hours (or it’s your first time using it), run 150ml of boiling water through the system and discard before making a feed.

1. Fill the milk powder dispenser provided with your RapidCool with your chosen formula powder.
2. Turn off the child lock by holding down the child lock icon.
3. Place your RapidCool on the stand under the water dispenser.
4. Use the volume icon and arrows to select the right feed size.
5. Select the boiling water icon, unlock the child lock again, and press the water drop icon to dispense boiling water.
6. Add your formula using the dispenser provided.
7. Screw the digital lid onto the RapidCool and shake to mix.
8. Flip the RapidCool upside down for at least five seconds to let the thermometer adjust. Tap the circle on the digital lid to activate the Nuby logo.
9. When the logo turns green, the feed is ready to pour into your baby’s bottle.
10. Always test the temperature on the inside of your wrist before feeding your baby.

How to descale your RapidHot

If your filter is less than four weeks old, you don’t need to replace it when descaling. Here’s what to do:

1. If your child lock icon is flashing, it’s time to descale.
2. Remove the filter and filter holder. Pour 250ml of white vinegar into the tank, then add 750ml of water.
3. Press the boiling water icon, then the child lock, and finally the water drop icon to dispense the descaling solution until the tank is empty.
4. Refill the tank with 600ml of fresh water, select the boiling water option, and dispense it into a cup or jug. Discard any remaining water before using the RapidHot again.
5. Once descaling is done, pop the filter back in and reassemble the filter holder into the tank.
6. If you’ve replaced the filter, follow steps 3-5 from the “Putting Together Your RapidHot” section above.

How to clean your RapidHot

If the water has been sitting in the tank for more than 48 hours, discard it and refill before use.

1. Remove the metal drip tray and plastic water collector tray, wash them with soapy water, and wipe the area underneath with a damp cloth.
2. Take out the float lid and float from the tank and wash them with warm, soapy water.
3. Reassemble everything, and you’re all set.

Explore our full RapidTeam which includes the RapidHot, RapidCool and RapidSterilise. For tips on how to use your RapidCool and RapidSterilise read our guides; How to use your Nuby RapidCool: The complete guide and How to use your Nuby RapidSterilise: The complete guide.