Jacob Bottley
As more homes make the switch to electric heating, the demand for reliable, easy to install and high-performance electric combi boilers is rising fast. But in a market full of options and overcomplicated systems, one product stands out for making life simpler, on site and at the trade counter, the ThermoSphere Electric Combi Boiler.
Built from the ground up with trade professionals in mind, this boiler delivers exactly what your customers need, without the hidden headaches, installation faff or follow up frustrations. Whether you're working on a retrofit, a new build property or replacing a traditional gas setup, here’s why ThermoSphere’s Electric Combi Boiler is right for the job.
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What is the ThermoSphere Electric Combi Boiler?
The Combi (combination) Boiler is a compact, wall mounted electric boiler that provides both central heating and hot water, all from a single, self-contained unit. There’s no need for a flue, no gas connection and no separate hot water cylinder. That means less pipework, fewer components and more flexibility on where and how it can be installed.
Perfect for smaller homes, off grid properties, modern flats or anyone looking to upgrade to clean, efficient electric heating. The ThermoSphere Combi Boiler is a future ready solution that’s as easy to live with as it is to fit.
One boiler, one solution, for resellers and installers 
Many electric boilers require you to choose between multiple outputs, versions or extra kits, adding complexity for both merchants and installers. ThermoSphere changes that.
Our combi boiler is fully adjustable, covering a wide range of property sizes and heating needs with a single model. This means that for installers there is no more second-guessing sizing, no model mismatches and no compatibility issues on the day.
Whether it's going into a one-bedroom apartment or a family home, this boiler adapts without compromise. It’s a ‘one box fits all’ solution that reduces risk and saves time.
For wholesalers and merchants, the simplicity continues. With only one SKU to manage, there’s no confusion around which model to quote, stock or supply. Whether you’re ordering for the shelf or placing a customer special, it’s fast, tidy, efficient and prevents overstocking.
From point of sale to point of installation, ThermoSphere makes the whole process friction free, because heating should be smart, not complicated.
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No flue, no gas, no problem
Because the ThermoSphere boiler is 100% electric, a whole list of traditional install obstacles simply disappear:
- No flue or condensate pipe
- No Gas Safe certification needed
- No emissions, no ventilation worries and no carbon risks
This opens up more installation locations and simplifies compliance across the board. It’s an ideal product for electricians looking to spark up a new revenue stream in heating, without jumping through gas related hoops.
All in the box, all thought through
We know how frustrating it is to arrive on site and realise you're missing fittings. That’s why the ThermoSphere installation pack includes everything needed for a smooth, streamlined install, right there in the box. No extra trips to the merchant, no guesswork, no delays.
And the warranty? That’s straightforward too:
- Install with the ThermoSphere Installation Kit? You get a 7 year warranty
- Install without it? Still covered with a solid 5 year warranty
At ThermoSphere, we understand that installers take pride in their work. Our combi is designed to ensure every installation looks smart, tidy and professionally finished. Every time.
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Real world performance, honestly stated 
Flow rate can make or break customer satisfaction and it comes down to balancing three factors: the available power supply, the incoming cold water temperature and the required output temperature. For the ThermoSphere Electric Combi Boiler, the maximum power is 14kW (63A). The temperature rise needed, known as the delta T, depends on the difference between incoming water temperature, which naturally varies with the seasons and the set hot water temperature, which is fixed.
What can be controlled is the flow rate and that’s exactly where our design makes the difference. Every ThermoSphere Installation Kit includes a 5LPM flow limiter as standard. Why? Because at 5 litres per minute, our boiler consistently delivers a 30°C temperature rise, regardless of external conditions. It’s a simple, reliable way to ensure stable hot water performance, all year round. Dependable performance in everyday conditions, from a product engineered to deliver exactly what it promises.
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Commissioning visits
To ensure every installation goes smoothly from the outset, ThermoSphere offers on-site commissioning support for installers fitting our electric combi boiler for the first time. A member of our technical team will attend site to assist with setup, including configuring system pressure, adjusting temperature settings and powering up the unit for initial operation. If any issues arise during commissioning, they are resolved immediately, eliminating delays and reducing stress on the installer.
This hands on support serves a dual purpose: it ensures the boiler is running exactly as it should from day one and it gives installers the chance to see and become familiar with just how easy it is to use. It’s a practical, efficient way to build confidence with a new system.
After installation, the process is just as easy. With ThermoSphere’s clear labelling, including serial numbers and direct support contact details on every boiler, all post-installation queries are routed straight to us. That means no callbacks for the installer and no time lost returning to site. Provided the warranty has been correctly activated (a quick and simple process) we can assist the end user directly and effectively, without any involvement from the original installer.
It’s all part of our commitment to supporting you. From the first install to long-term performance, ThermoSphere products have been designed by installers, for installers to make electric heating easy. Easy to fit, easy to use, built to last.
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The bottom line
The ThermoSphere Electric Combi Boiler isn’t just another electric heating product, it’s a smart, reliable and installer friendly solution built for the trade. It’s designed to save time, reduce call backs and deliver consistently strong performance in real homes. No fuss, no filler, just a product that does what it says on the tin and does it well.
Whether you're a seasoned heating engineer or an electrician expanding into the world of electric boilers, this is the only boiler you’ll need to have in the van. It installs cleanly, runs quietly and performs brilliantly, day after day, job after job.
Ready to plug into something better?
Choose ThermoSphere.
Electric Heating Made Easy
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Questions?
Or contact us via the website, or give one of the team a call on 01622 689440. Find out more about ThermoSphere by reading of one of our other blogs here.
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