Product Info

Product Information

Designed to make a difference to both

installers and to consumers

The Cotherm P.I.L is a prewired, all-in-one Economy 7 immersion heater timer + SMART thermostat, which learns the exact amount of hot water you use and when you use it.  It then only heats what you need, with no unnecessary heating.


It's simple and it works, saving valuable energy, which is good for your pocket and good for the environment.


Quick and easy to install onto your existing electric hot water cylinder, so get your Cotherm P.I.L today!

Retail sales Trade sales

Product information

Designed to make a difference to both installers and to consumers

Product information

Designed to make a difference to both installers and to consumers

The Cotherm P.I.L is a prewired, all-in-one "Economy 7 immersion timer + SMART thermostat" control, which learns the exact amount of hot water use and when you use it.  It then only heats what you need, with no unnecessary heating.


It's simple and it works, saving valuable energy, which is good for your pocket and good for the environment.


Quick and easy to install onto your existing electric hot water cylinder, so get your Cotherm P.I.L today!

The Cotherm P.I.L is a prewired, all-in-one "Economy 7 immersion timer + SMART thermostat" control, which learns the exact amount of hot water use and when you use it.  It then only heats what you need, with no unnecessary heating.


It's simple and it works, saving valuable energy, which is good for your pocket and good for the environment.


Quick and easy to install onto your existing electric hot water cylinder, so get your Cotherm P.I.L today!

Retail sales Trade sales

Cotherm P.I.L benefits

Cotherm P.I.L benefits

Easy to install

How to install your Cotherm P.I.L.   The Cotherm P.I.L, all-in-one Economy 7 immersion heater timer + thermostat, is extremely quick and easy to retro-fit onto the existing electric hot water cylinder.


The pre-wired unit offers a simple 4-stage installation process. Rapid, safe, no tank drain-down and ultimately, no mess or inconvenience.


The Cotherm P.I.L, all-in-one immersion heater timer + thermostat, is also compatible with most modern electric hot water cylinders. It works with all utility applications including single tariff or dual tariffs Economy 7 and Economy 10.


If you watch the video, you will see just how easy it really is to fit the smart water heating control!

Saving time & money through active learning

With the ability to rapidly learn hot water demand, you can simply fit, forget and benefit financially from its energy saving capabilities and without need to worry about the programming.


And furthermore, with the ‘plug and play’ fit time you won’t be incurring large costs from your chosen professional installer – making it even more cost effective at every step of your Cotherm P.I.L journey.   


Intelligent, safe, and cost effective 


Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat
The best environmentally friendly immersion timer with built in SMART thermostat

Environmentally friendly

Saving money is one thing we all want – but not at a cost to the environment especially with the current challenges we are all facing.


Based on average consumption the Cotherm P.I.L, smart water heating control, could save you 264kWh units of energy per year, which also means an annual saving of up to 80kg of CO2.


Saving you money and helping save the planet one water cylinder at a time.  A great energy saving product!

Anti-legionella

Piece of mind when it comes to Legionaires is also a key benefit of the Cotherm P.I.L smart water heating control, which is good for everyone who uses water in your house.


A fully automatic anti-legionella cycle will commence if Cotherm P.I.L detects the water in the electric hot water cylinder has failed to reach a safe temperature for 21 days.


Keeping those you care about safe. 






Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

The best all-in-one energy saving immersion timer & SMART thermostat

Easy to install

How to install your Cotherm P.I.L.   The Cotherm P.I.L, all-in-one Economy 7 immersion timer + thermostat, is extremely quick and easy to retro-fit onto the existing electric hot water cylinder.


The pre-wired unit offers a simple 4-stage installation process. Rapid, safe, no tank drain-down and ultimately, no mess or inconvenience.


The Cotherm P.I.L, all-in-one immersion timer + thermostat, is also compatible with most modern electric hot water cylinders. It works with all utility applications including single tariff or dual tariffs Economy 7 and Economy 10.


If you watch the video, you will see just how easy it really is to fit the smart water heating control!



Saving time & money through active learning

Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

With the ability to rapidly learn hot water demand, you can simply fit, forget and benefit financially from its energy saving capabilities and without need to worry about the programming.


And furthermore, with the ‘plug and play’ fit time you won’t be incurring large costs from your chosen professional installer – making it even more cost effective at every step of your Cotherm P.I.L journey.   


Intelligent, safe, and cost effective 


Environmentally friendly

best environmentally friendly energy saving immersion timer image

Saving money is one thing we all want – but not at a cost to the environment especially with the current challenges we are all facing.


Based on average consumption the Cotherm P.I.L, smart water heating control, could save you 264kWh units of energy per year, which also means an annual saving of up to 80kg of CO2.


Saving you money and helping save the planet one water cylinder at a time.  A great energy saving product!

Anti-legionella

Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

Piece of mind when it comes to Legionaires is also a key benefit of the Cotherm P.I.L smart water heating control, which is good for everyone who uses water in your house.


A fully automatic anti-legionella cycle will commence if Cotherm P.I.L detects the water in the electric hot water cylinder has failed to reach a safe temperature for 21 days.


Keeping those you care about safe. 

Cotherm P.I.L features

Cotherm PIL features holiday mode on immersion timer

Holiday mode

Tell it how many days you are away for and it will ensure it returns to the mode selected before you left, ensuring your usual hot water need is met on your return.


Looking after you, home or away. 



Simple brilliance

Although the Cotherm P.I.L, all-in-one Eco 7 immersion timer + built in SMART thermostat, appears physically quite simple in build, this simplicity benefits the ease of installation, product reliability and reduced manufacturing costs, which are passed on to the customer; but the devil is very much in the detail.


The smart technology, in the brains of the immersion timer, is what makes the controller so special.  Extensive in house research and development has led to software which uses complex algorithms to accurately learn your daily, weekly and monthly water heating usage.



Our complex technology, helping make your life simple.




Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

Plumbers

top questions

Can't find what you are looking for?

Try using the search box.

  • What is the best immersion timer?

    The Cotherm PIL is the best option if you need an immersion timer replaced on an electric hot water cylinder.

    An all-in-one unit combining immersion timer & SMART thermostat, which works with all utility applications including single tariff or dual tariffs Economy 7 and Economy 10.

    Using powerful intelligent learning algorithms, it accurately and automatically predicts the timing, temperature and quantity of hot water your household will actually need.

    It offers the consumer, proven real world energy savings and 5 minute installation times!

  • How long does the Cotherm PIL take to install?

    Install times are reduced to 5 mins max.  

    The all-in-one "Economy 7 immersion timer + thermostat" is a pre-wired, pre-programmed, single point insallation; so no complicated installation or wiring.  Quick, simple and onto the next job.

  • What wiring is involved with the Cotherm PIL?

    The Cotherm PIL is pre-wired, pre-programmed and ready to go.

    All that is needed is for a single power cable to be cut and a clic connector fitted.

    * A simple 5 minute installation.


    Contact us for more information.

  • How does the Cotherm PIL save me money?

    1. Hardware Savings:

    Purchase costs are reduced by only buying one product and not two products.

    2. Installation Savings:

    Install times reduced to 5 mins max.  It is now a single point insallation with no complicated wiring.  Pre-wired and pre-programmed.  Quick, simple and on to the next job.

Holiday mode

best holiday made for immersion timer

Tell it how many days you are away for and it will ensure it returns to the mode selected before you left, ensuring your usual hot water need is met on your return.


Looking after you, home or away. 



Simple brilliance

Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

Although the Cotherm P.I.L, all-in-one Eco 7 immersion timer + thermostat control, appears physically quite simple in build, this simplicity benefits the ease of installation, product reliability and reduced manufacturing costs, which are passed on to the customer; but the devil is very much in the detail.


The smart technology, in the brains of the immersion timer, is what makes the controller so special.  Extensive in house research and development has led to software which uses complex algorithms to accurately learn your daily, weekly and monthly water heating usage.



Our complex technology, helping make your life simple.


Plumbers

top questions

  • What is the best immersion timer?

    The Cotherm PIL is the best option if you need an immersion timer replaced on an electric hot water cylinder.

    An all-in-one unit combining immersion timer & SMART thermostat, which works with all utility applications including single tariff or dual tariffs Economy 7 and Economy 10.

    Using powerful intelligent learning algorithms, it accurately and automatically predicts the timing, temperature and quantity of hot water your household will actually need.

    It offers the consumer, proven real world energy savings and 5 minute installation times!

  • How long does the Cotherm PIL take to install?

    Install times are reduced to 5 mins max.  

    The all-in-one "Economy 7 immersion timer + thermostat" is a pre-wired, pre-programmed, single point insallation; so no complicated installation or wiring.  Quick, simple and onto the next job.

  • What wiring is involved with the Cotherm PIL?

    The Cotherm PIL is pre-wired, pre-programmed and ready to go.

    All that is needed is for a single power cable to be cut and a clic connector fitted.

    * A simple 5 minute installation.


    Contact us for more information.

  • How does the Cotherm PIL save me money?

    1. Hardware Savings:

    Purchase costs are reduced by only buying one product and not two products.

    2. Installation Savings:

    Install times reduced to 5 mins max.  It is now a single point insallation with no complicated wiring.  Pre-wired and pre-programmed.  Quick, simple and on to the next job.

Can't find what you are looking for?

Try using the search box.

Easy to install

How to install your Cotherm P.I.L.   The Cotherm P.I.L, all-in-one Economy 7 immersion timer + thermostat, is extremely quick and easy to retro-fit onto the existing electric hot water cylinder.


The pre-wired unit offers a simple 4-stage installation process. Rapid, safe, no tank drain-down and ultimately, no mess or inconvenience.


The Cotherm P.I.L, all-in-one immersion timer + thermostat, is also compatible with most modern electric hot water cylinders. It works with all utility applications including single tariff or dual tariffs Economy 7 and Economy 10.


If you watch the video, you will see just how easy it really is to fit the smart water heating control!



Saving time & money through active learning

Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

With the ability to rapidly learn hot water demand, you can simply fit, forget and benefit financially from its energy saving capabilities and without need to worry about the programming.


And furthermore, with the ‘plug and play’ fit time you won’t be incurring large costs from your chosen professional installer – making it even more cost effective at every step of your Cotherm P.I.L journey.   


Intelligent, safe, and cost effective 


Environmentally friendly

best environmentally friendly immersion timer image

Saving money is one thing we all want – but not at a cost to the environment especially with the current challenges we are all facing.


Based on average consumption the Cotherm P.I.L, smart water heating control, could save you 264kWh units of energy per year, which also means an annual saving of up to 80kg of CO2.


Saving you money and helping save the planet one water cylinder at a time.  A great energy saving product!

Our environmental policy More information

Anti-legionella

Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

Piece of mind when it comes to Legionaires is also a key benefit of the Cotherm P.I.L smart water heating control, which is good for everyone who uses water in your house.


A fully automatic anti-legionella cycle will commence if Cotherm P.I.L detects the water in the electric hot water cylinder has failed to reach a safe temperature for 21 days.


Keeping those you care about safe. 


Cotherm P.I.L features

Holiday mode

best holiday mode on immersion clock

Tell it how many days you are away for and it will ensure it returns to the mode selected before you left, ensuring your usual hot water need is met on your return.


Looking after you, home or away. 



Simple brilliance

Saving money with the Cotherm PIL - Cotherm PIL, Economy 7 immersion timer with SMART thermostat

Although the Cotherm P.I.L, all-in-one Eco 7 immersion timer + thermostat control, appears physically quite simple in build, this simplicity benefits the ease of installation, product reliability and reduced manufacturing costs, which are passed on to the customer; but the devil is very much in the detail.


The smart technology, in the brains of the immersion timer, is what makes the controller so special.  Extensive in house research and development has led to software which uses complex algorithms to accurately learn your daily, weekly and monthly water heating usage.



Our complex technology, helping make your life simple.


Plumbers

top questions

  • What is the best immersion timer?

    The Cotherm PIL is the best option if you need an immersion timer replaced on an electric hot water cylinder.

    An all-in-one unit combining immersion timer & SMART thermostat, which works with all utility applications including single tariff or dual tariffs Economy 7 and Economy 10.

    Using powerful intelligent learning algorithms, it accurately and automatically predicts the timing, temperature and quantity of hot water your household will actually need.

    It offers the consumer, proven real world energy savings and 5 minute installation times!

  • How long does the Cotherm PIL take to install?

    Install times are reduced to 5 mins max.  

    The all-in-one "Economy 7 immersion timer + thermostat" is a pre-wired, pre-programmed, single point insallation; so no complicated installation or wiring.  Quick, simple and onto the next job.

  • What wiring is involved with the Cotherm PIL?

    The Cotherm PIL is pre-wired, pre-programmed and ready to go.

    All that is needed is for a single power cable to be cut and a clic connector fitted.

    * A simple 5 minute installation.


    Contact us for more information.

  • How does the Cotherm PIL save me money?

    1. Hardware Savings:

    Purchase costs are reduced by only buying one product and not two products.

    2. Installation Savings:

    Install times reduced to 5 mins max.  It is now a single point insallation with no complicated wiring.  Pre-wired and pre-programmed.  Quick, simple and on to the next job.

Can't find what you are looking for?

Try using the search box.

Cotherm P.I.L

Heating element compatibility list

Description Length Thread Diameter Voltage AC/DC Mounting Orientation
Incoloy Immersion 11" 1.75" 230V / 250V AC Horizontal
Incoloy Immersion 11" 2.25" 230V / 250V AC Horizontal
Copper Immersion 11" 2.25" 230V / 250V AC Horizontal
Incoloy Immersion 14" 1.75" 230V / 250V AC Horizontal
Titanium Immersion 14" 1.75" 230V / 250V AC Horizontal
Incoloy Immersion 14" 2.25" 230V / 250V AC Horizontal
Copper Immersion 14" 2.25" 230V / 250V AC Horizontal

Cotherm P.I.L technical

Cotherm P.I.L technical

Hot water tank with best energy saving immersion timer and stat fitted

Cotherm P.I.L compatibility

The Cotherm P.I.L is extremely quick and easy to install and is compatible with most modern electric hot water cylinders.  It works with all utility applications including single tariff or dual tariffs, Economy 7 and Economy 10.

quickest immersion timer to install image

Cotherm P.I.L installation

The Cotherm P.I.L is a 10 minute installation for qualified plumbers.  The pre-wired, pre-programmed all-in-one Economy 7 immersion timer + SMART thermostat is a one stop installation.  It is a simple process of replacing the thermostat,  connecting a power cable and replacing the old thermostat cover with the Cotherm P.I.L.

best immersion timer display image

Cotherm P.I.L display panel

The Cotherm P.I.L can be programmed for all your needs.  The following shows the display and how you can program to your needs including the Smart mode that uses our Intelligent Learning Technology.

Small impact visually, but a huge impact on financial savings and in benefitting the environment.

The Cotherm P.I.L, Economy 7 immersion timer + thermostat, is not only quick and simple to fit, but has little impact visually or on space taken up.


Use the slider tool on the water heating tank image, to see a 'Before and After' of how the smart water heating control will look on your electric hot water cylinder. 


Try it out now!

Electric hot water cylinder without Cotherm PIL
Electric hot water cylinder with Cotherm PIL

Simply the best available immersion heater timer with a built in SMART thermostat, which uses powerful intelligent learning algorithms to help reduce your energy consumption.

The Cotherm P.I.L leaflet

For further and more detailed information on installing and programming the Cotherm PIL, please click on the download button.

Download installation leaflet See More Cotherm Products

Cotherm  ISO accreditations

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