Hotbot by Plentify2022-07-12T10:14:44+02:00

Save energy
with HotBot™

The smart geyser controller fixing loadshedding one home at a time.

Meet HotBot, a small smart energy device fused with artificial intelligence, that connects to any existing geyser, and allows you to control it from anywhere on your phone. It intelligently turns your geyser on and off, making it operate far more efficiently.

Together with all other HotBots, we can fix loadshedding by shifting electricity usage out of peak times to better balance the demand on our electricity grids.

It’s time to upgrade

Geysers are responsible for
40 – 60% of your electricity
bill

Electricity prices have
increased 5x in the past
10 years

A typical geyser bursts every
5 – 10 years due to undetected issues

Traditional geyser timers
work in isolation and can
contribute to loadshedding

Get HotBot now

Small, smart ways to lighten the energy load for everyone

Only pay for the hot water you use

HotBot helps you use up to 30% less energy heating water and syncs up with other HotBots in your area to create the most efficient heating schedule. You save, and so does everyone else.

No more guessing

Customise your hot water schedule and actually see the effects of your usage. A powerful intelligence engine at your fingertips gives you full control over your geyser.

Use it while it’s hot

Most geysers stay warm even when they’re not heating. Get the most out of a thrifty heating schedule with live temperature updates.

Stay flexible

Even a good routine needs some room for unexpected plot twists. Override the schedule at any time or use vacation mode when you’re away.

Never worry about leaks again

Get notified in real time if anything goes wrong. HotBot’s smart sensors detect leaks, prevent damage to your home, and monitor your geyser’s efficiency.

Be smart like HotBot

Not only does HotBot’s intelligence engine learn and adapt to your hot water schedule, it helps you form better energy habits. Get insights on how to save more and reduce your impact on the grid.

Get HotBot now

Get rewarded with HotBot™ savings

Because HotBot helps you achieve your energy savings goals each month, you can save up to 30% on your water heating costs and fully fund your HotBot subscription. That’s the equivalent of 200 – 300 free showers a year!

Get rewarded with HotBot™ savings

Because HotBot helps you achieve your energy savings goals each month, you can save up to 30% on your water heating costs and fully fund your HotBot subscription. That’s the equivalent of 200 – 300 free showers a year!

Save with a
HotBot™ subscription

Saving is easier from the start with a low upfront investment. That way, HotBot pays for itself in monthly electricity savings.

What’s included:

  • HotBot installation by an accredited technician

  • Ongoing maintenance and service

  • Full app access

  • Regular software and firmware updates

  • Monthly insights reports to help you save even more

  • New feature releases based on user feedback

HotBot™
STANDARD

R99.00

R49.50
per month x 24

HotBot Standard installation + app subscription

+ R200 once-off activation fee

Get HotBot Standard

HotBot™
PLUS

R99.00

R49.50
per month x 24

Upgrade for more protection with a shut-off valve. Automatically close water supply to your geyser if HotBot detects a leak, preventing a burst from damaging your home.

+ R1,200 once-off activation fee

Get HotBot Plus

HotBot™
STANDARD

R99.00

R49.50
per month x 24

HotBot Standard installation + app subscription

+ R200 once-off activation fee

Get HotBot Standard

Save with a
HotBot™ subscription

Saving is easier from the start with a low upfront investment. That way, HotBot pays for itself in monthly electricity savings.

What’s included:

  • HotBot installation by an accredited technician

  • Ongoing maintenance and service

  • Full app access

  • Regular software and firmware updates

  • Monthly insights reports to help you save even more

  • New feature releases based on user feedback

Upgrade for more protection

HotBot™
PLUS

R99.00

R49.50
per month x 24

Upgrade for more protection with a shut-off valve. Automatically close water supply to your geyser if HotBot detects a leak, preventing a burst from damaging your home.

+ R1,200 once-off activation fee

Get HotBot Plus

Spend less. Save more.

We created HotBot so
everyone could save

Here at Plentify we don’t like loadshedding or cold showers either. We’ve got HotBot at work in our own homes too, so we go out of our way to make sure HotBot is working optimally. Our engineers are always improving the intelligence engine, making sure we have hot water when we want it and save electricity when we don’t.

Spend less.
Save more.

We created HotBot so
everyone could save

Here at Plentify we don’t like loadshedding or cold showers either. We’ve got HotBot at work in our own homes too, so we go out of our way to make sure HotBot is working optimally. Our engineers are always improving the intelligence engine, making sure we have hot water when we want it and save electricity when we don’t.

Still deciding?

With HotBot there are no hidden or unexpected costs. Save more and spend less than you would with a traditional geyser timer. It’s kind of a no-brainer.

Geyser timers vs HotBot™
Smart savings
Track savings in real-time
Save even when you’re on vacation
Get personalised insights and tips to save more
Intuitive control
Control your water heater from anywhere
AI-optimised hot water schedule
Check your hot water temperature in real-time
Easily change setpoint temperature
Real-time protection
Detect leaks, broken thermostat, elements and more
Monitor performance of your water heater
Get alerted when things go wrong
Smart savings
Track savings in real-time
Save even when you’re on vacation
Get personalised insights and tips to save more
Intuitive control
Control your water heater from anywhere
AI-optimised hot water schedule
Check your hot water temperature in real-time
Easily change setpoint temperature
Real-time protection
Detect leaks, broken thermostat, elements and more
Monitor performance of your water heater
Get alerted when things go wrong
Smart savings
Track savings in real-time
Save even when you’re on vacation
Get personalised insights and tips to save more
Intuitive control
Control your water heater from anywhere
AI-optimised hot water schedule
Check your hot water temperature in real-time
Easily change setpoint temperature
Real-time protection
Detect leaks, broken thermostat, elements and more
Monitor performance of your water heater
Get alerted when things go wrong
Get HotBot now

Take control and start saving

Install

Once subscribed, you will receive an email with a personalised link to pick a convenient time for an accredited plumber to install your HotBot.

Personalise

Good habits need a good routine. Set your hot water schedule so HotBot can get to work. But you can override the schedule at any time for those unexpected plot twists or use vacation mode when you’re away.

Save

Track your savings in the app and see the effects of your hot water use in real time. Each month you’ll see your progress so you can discover even more ways to save.

Get HotBot now

Control your geyser from anywhere

Control your geyser from anywhere

Users who love HotBot™

Is HotBot™ right for me?

Get HotBot now

HotBot for medium to high usage households

If you spend more than R1,000 per month on electricity, and 3 or more people use the connected water heater you will benefit the most from HotBot savings.

HotBot for small households

If you only use a small amount of hot water, HotBot savings might be slight – but it will still provide powerful control and protection of your geyser. Detecting a leak in time can save you from wasting electricity and from damage to your home.

Get HotBot now

Commonly asked questions

What is Project Smart Geyser?2022-05-17T17:48:57+02:00

Project Smart Geyser is paying the discount on your subscription to get HotBot technology out there in order to prove how it can fix loadshedding and enable more solar. This project brings together partners, including EEP Africa, the City of Cape Town and GIZ, to improve energy reliability and efficiency in South Africa. By getting a HotBot, you’ll be part of a groundbreaking project that shows how Cape Town is at the forefront of creating a clean energy future.

Which geysers is HotBot compatible with?2022-07-05T17:26:27+02:00

HotBot is compatible with all electric geysers and solar geysers where the tank is on the roof (thermosyphon systems). It is not intended for gas, pumped solar thermal (where the tank is typically inside), low-pressure / push-through (typically seen in RDP houses), or heat pump geysers.

The geyser must be accessible to a technician for installation. In order for leak detection and the optional shut-off valve to work, you must have a drip tray and your geyser must be installed inside.

How does installation work?2022-05-17T17:48:57+02:00

After you subscribe for HotBot you will receive a link to book a convenient installation time. Our partners at TOD will send a HotBot-accredited technician to do the rest.

Where is HotBot installed?2022-07-05T17:26:46+02:00

HotBot is a small Internet of Things device (17cm x 15xm x 6cm) that is installed adjacent to your existing geyser. The power to your geyser is run through HotBot, and it has several sensors which attach to your hot water system.

What should I do if I have a timer on my geyser?2022-07-05T17:27:11+02:00

Make sure to remove or bypass any timers or other geyser controllers, and rather manage your hot water through the app at my.plentify.io.

What if my hot water system is non-compliant with regulations?2022-07-05T17:27:26+02:00

HotBot still works with geysers despite most non-compliance issues. Depending on the nature of the non-compliance, certain features may not work. For example, some hot water systems allow valves to drain into the drip tray instead of being directed outside with a pipe – in these cases it is not possible to distinguish between this and leaks. Our technicians will notify you of any compliance or other issues that they find with your geyser, and can assist in rectifying at your cost.

What happens after I subscribe for a HotBot through this website?2022-05-17T17:48:58+02:00

After you checkout, you will receive an email with a personalised link to book your installation. You simply select a convenient date and time for the installation, and our accredited plumbers will arrive with the device and install it for you. Once HotBot is installed you can register on our Plentify app and start saving! You will be charged the subscription fee each month, starting 1 month after you have ordered your HotBot.

Will I have hot water when I need it?2022-05-18T11:06:46+02:00

Definitely! HotBot is designed to ensure that you have hot water when you need it and save you money when you don’t. The system pre-heats your hot water so you always have hot water at scheduled times. If you forgot to schedule a time, you can always manually override in the app to start heating your water immediately.

How much will I save?2022-07-05T17:28:29+02:00

Our users save up to 30% of their water heating costs compared to leaving geysers on 24/7, with most saving 15-20%, and some less. This is about double the savings you can expect with a simple timer or by manually switching your geyser at the distribution board. Actual savings depends on many factors – most notably how well insulated your hot water system is, and how much hot water you use relative to your tank size.

How does my HotBot help fix loadshedding and enable more solar?2022-05-17T17:48:59+02:00

Demand for electricity is not flat, rather it peaks in the mornings and the evenings. Our electricity grid struggles the most during these peak periods, when available electricity supply often falls short of demand and Eskom burns a lot of diesel to try to keep the lights on. Often they simply can’t keep up, or need to save the diesel to serve other times of the day – leading to loadshedding

Solar by itself is not the answer as it produces most energy during the middle of the day, and does very little to address our peak problem.

HotBot solves both of these problems. Your HotBot can coordinate with all other HotBots to intelligently shift energy demand away from times when Eskom is burning diesel or we’re at greatest risk of loadshedding, and towards times when more solar energy is available – while making sure that you have hot water when you want it.

Is there an app for my phone or tablet?2022-07-05T17:28:42+02:00

You can manage your geyser from any device using the web app at my.plentify.io.

Can I cancel? What if I move house?2022-05-19T11:17:53+02:00

The initial subscription term is 24 months from installation. Thereafter, the service continues on a month to month basis, and you can cancel anytime with 1 month notice.

If you want to cancel within the initial 24 month term, you will be liable for a R1,700 cancellation fee, to cover the cost of installation, removal and refurbishment. If you move house within this period, you can also either have us relocate your HotBot (for a fee to be quoted at the time), or have the new residents take over your contract (in which case the cancellation fee will be waived).

Should I turn my geyser on and off at the distribution board?2022-07-05T17:29:00+02:00

Avoid switching your geyser on and off at the distribution board. This can reduce energy savings and prevent leaks and other issues from being detected. Instead, manage your geyser from the app at my.plentify.io.

What should I do when I leave town?2022-05-17T17:49:00+02:00

Set your HotBot to vacation mode to save money and energy when you’re away from home. Do this from the “Status” tab of the app.

How will I be notified if there is an issue with my geyser?2022-07-05T17:29:16+02:00

You’ll receive an SMS letting you know if we’ve identified any issues or suspected leaks with your geyser. If you purchased the optional shut-off valve, your water supply will automatically be shut off, and you can reopen it from the app at my.plentify.io.

Need help?

Get in touch

Will you join the movement?

Plentify’s efforts have earned the recognition, trust, and support of several leading global organisations. Join us in creating the energy system that the world needs.

  • 2017

    Echoing Green

    World’s leading angel investor in social impact startups.

    Plentify’s relationship: Fellow

    Find out more

  • 2017

    Tamer Fund

    The Tamer Fund for Social Ventures provides seed grants to social and environmental ventures.

    Plentify’s relationship: Grant recipient

    Find out more

  • 2018

    The African Entrepreneurship Award

    Africa’s largest, private sector award focused on helping businesses that use technology.

    Plentify’s relationship: Winner

    Find out more

  • 2019

    EDF

    One of the world’s largest utilities and renewable energy producers. Pulse is their annual energy innovation competition.

    Plentify’s relationship
    Finalist: UK, 2020  
    Winner, Southern Africa 2019

    Find out more

  • 2020

    GIZ

    The GIZ implements the South African German Energy Programme (SAGEN), in conjunction with the DMRE, SALGA, Eskom and the National Treasury.

    Plentify’s relationship: Partner

    Find out more

  • 2020

    City of Cape Town

    Second-largest economic centre in South Africa, contributing 10% of the national GDP and home to 4 million residents.

    Plentify’s relationship: Project partner

  • 2021

    World Alliance for Efficient Solutions

    Non-profit organisation launched at the Bonn Climate Conference to bring together the main actors in the field of clean technologies

    Plentify’s relationship: Member

  • 2021

    The Diamond List

    The Diamond List is an exclusive and global group of game-changing climate ventures deemed investment-ready and poised for impact.

    Plentify’s relationship: Portfolio company

  • 2021

    CSIR

    The Council for Scientific and Industrial Research is South Africa’s premier scientific R&D organisation, and the largest R&D organisation in Africa.

    Plentify’s relationship: Partner

  • 2021

    EEP

    The Energy and Environment Partnership Trust Fund (EEP) is managed by the Nordic Development Fund and provides financing to innovative clean energy projects and technologies.

    Plentify’s relationship: Portfolio company

    Find out more

  • 2021

    Third Sphere

    Top North American early stage climate VC firm.

    Plentify’s relationship: Portfolio company

    Find out more

  • 2021

    Simple Capital

    Investor focused on early stage hyper-growth companies.

    Plentify’s relationship: Portfolio company

    Find out more

  • 2021

    URBAN-X

    World-renowned accelerator for urbantech solutions which make cities more sustainable, livable, and resilient.

    Plentify’s relationship: Portfolio company

    Find out more

  • 2022

    Global Startup Awards

    The world’s largest independent startup competition, covering 124+ countries.

    Plentify’s relationship:
    Top South Africa startup
    African Founder of the Year

    Find out more

  •  
  • 2017
  • 2017
  • 2018
  • 2019
  • 2020
  • 2020
  • 2021
  • 2021
  • 2021
  • 2021
  • 2021
  • 2021
  • 2021
  • 2022
  • Echoing Green

    World’s leading angel investor in social impact startups.

    Plentify’s relationship: Fellow

    Find out more

  • Tamer Fund

    The Tamer Fund for Social Ventures provides seed grants to social and environmental ventures.

    Plentify’s relationship: Grant recipient

    Find out more

  • The African Entrepreneurship Award

    Africa’s largest, private sector award focused on helping businesses that use technology.

    Plentify’s relationship: Winner

    Find out more

  • EDF

    One of the world’s largest utilities and renewable energy producers. Pulse is their annual energy innovation competition.

    Plentify’s relationship
    Finalist: UK, 2020  
    Winner, Southern Africa 2019

    Find out more

  • GIZ

    The GIZ implements the South African German Energy Programme (SAGEN), in conjunction with the DMRE, SALGA, Eskom and the National Treasury.

    Plentify’s relationship: Partner

    Find out more

  • City of Cape Town

    Second-largest economic centre in South Africa, contributing 10% of the national GDP and home to 4 million residents.

    Plentify’s relationship: Project partner

  • World Alliance for Efficient Solutions

    Non-profit organisation launched at the Bonn Climate Conference to bring together the main actors in the field of clean technologies

    Plentify’s relationship: Member

  • The Diamond List

    The Diamond List is an exclusive and global group of game-changing climate ventures deemed investment-ready and poised for impact.

    Plentify’s relationship: Portfolio company

  • CSIR

    The Council for Scientific and Industrial Research is South Africa’s premier scientific R&D organisation, and the largest R&D organisation in Africa.

    Plentify’s relationship: Partner

  • EEP

    The Energy and Environment Partnership Trust Fund (EEP) is managed by the Nordic Development Fund and provides financing to innovative clean energy projects and technologies.

    Plentify’s relationship: Portfolio company

    Find out more

  • Third Sphere

    Top North American early stage climate VC firm.

    Plentify’s relationship: Portfolio company

    Find out more

  • Simple Capital

    Investor focused on early stage hyper-growth companies.

    Plentify’s relationship: Portfolio company

    Find out more

  • URBAN-X

    World-renowned accelerator for urbantech solutions which make cities more sustainable, livable, and resilient.

    Plentify’s relationship: Portfolio company

    Find out more

  • Global Startup Awards

    The world’s largest independent startup competition, covering 124+ countries.

    Plentify’s relationship:
    Top South Africa startup
    African Founder of the Year

    Find out more

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