FAQs

Bolt is an innovative electric boiler system designed to replace traditional gas boilers. It's fully electric, solar-compatible, and battery-ready, making it an environmentally friendly alternative for home heating and hot water.

We're aiming to begin taking orders from June 2025.

Currently, the Bolt Argon series is our main offering, available as a standalone boiler or with battery and solar charger add-ons. The Bolt Helium and Krypton models are in development and expected to be available around May/June 2026.

Here's our current pricing structure (excluding VAT):

Bolt Argon Series:

• Bolt Argon (boiler only): £2,300
• Bolt Argon + Battery: £3,300
• Bolt Argon + Battery + Solar Charger: £3,500

Optional Add-ons:

• Battery only: £1,000
• Solar charger add-on: £200

For heating-only requirements, we also offer the SMART EASY.N system-only boiler at £1,499 + VAT.

At present, there are no direct UK government grants available for electric boiler installations like ours. Most current schemes (such as the Boiler Upgrade Scheme) are limited to heat pumps and don't cover electric combi systems.

We currently don't offer any finance packages for Bolt boiler purchases.

We are boiler suppliers rather than installers. We're building a national installer network and will be able to recommend certified professionals once our training program is complete. Installation can also be handled by any qualified electrician and plumber.

Typical installation costs range from £1,500–£2,500, depending on your property's setup (existing pipework, electrics, etc.). The exact cost will depend on your specific requirements and the installer you choose.

Yes, Bolt can replace your existing gas or electric boiler. It works with your existing radiator system and is a straight swap for your current setup—with no need to change the pipework.

Yes, Bolt is designed to work alongside existing solar panels and battery systems. The boiler can operate using power from your existing setup, and our optional Bolt battery is specifically designed to boost hot water performance.

The Bolt Argon operates using a volt-free contact for external control, meaning it can integrate with most smart thermostats like Hive, Tado, and others via their heating control relays. For platforms like Home Assistant, Bolt can work through a relay-based connection.

Yes, replacing your gas boiler with Bolt won't affect your gas hob—they operate independently. If you later decide to switch your hob to electric, you can remove gas from your home entirely and eliminate gas standing charges.

At this stage, Bolt does not support OpenTherm communication. However, it works with standard thermostat controls via volt-free contacts, allowing integration with smart heating systems for zone control and scheduling.

Yes, Bolt is compatible with external systems like the MyEnergi Eddi and Zappi.

Yes, you can absolutely install a Bolt boiler even if you already have a Tesla Powerwall.

Here's how it fits together:

• Our Bolt battery is designed specifically to boost hot water performance
• For central heating, Bolt will simply tap into your Tesla Powerwall instead of relying directly on the grid
• This makes your overall setup even more efficient, especially if you're already charging your Tesla battery from solar or low-cost tariffs.

Yes, Bolt can integrate with your Tado-X setup for zone control and scheduling.

Yes, Bolt will run alongside your existing Mixergy tank.

Yes, the Bolt Argon operates using a volt-free contact for external control, meaning it can integrate with most smart thermostats like Hive via their heating control relays.

For platforms like Home Assistant, Bolt can work through a relay-based connection (using a simple smart relay or switching device), allowing you to integrate it into your wider smart home automation system.

The Bolt Argon delivers 12kW for central heating and uses a patented heat exchanger for efficient hot water. It can draw up to 12kW at peak (when heating up from cold), with an average draw of 4–8kW once the system is running, depending on insulation and outdoor temperatures.

With one Bolt battery, you can connect up to 4kW of solar PV directly into the system without needing an external inverter. This typically equates to about 10 solar panels, depending on their size and efficiency.

Our Bolt battery modules are 4kWh each. The system is stackable, meaning you can add more 4kWh battery modules as needed for increased capacity.

Bolt works well for most homes currently using gas boilers. For a rough guide:

• A typical 3-4 bedroom home with 1-2 bathrooms is well within Bolt's capability
• If you currently use around 15,000-20,000 kWh of gas annually, this typically translates to 11,000–12,000 kWh/year of electric demand with Bolt
• Properties with good insulation will see the best performance and efficiency

Running costs depend on your energy tariff and usage patterns. If you have solar panels or can access off-peak electricity rates, you can significantly reduce running costs.

If your existing home battery system can deliver the required power (up to 12kW at peak), it can support the Bolt boiler for central heating. The Bolt battery is optional and is specifically designed to boost hot water performance, especially during periods of high demand.

Bolt offers several advantages over heat pumps:

• Works with existing radiators without requiring system modifications
• No outside unit required
• More compact installation
• Faster hot water and heating response times
• Compatible with microbore piping systems where heat pumps cannot be used

Yes, for heating-only requirements (where hot water is handled separately), we recommend the SMART EASY.N system-only boiler at £1,499 + VAT. This is designed specifically for central heating without hot water provision.

Yes, the Bolt Argon is suitable for properties of all sizes. For smaller homes like 1-2 bedroom flats, the standard Bolt Argon boiler (£2,300 + VAT) provides more than enough capacity for both heating and hot water.

Yes, Bolt can work in older properties, but we always recommend reviewing insulation if you're switching to electric heating. Improving insulation (especially in lofts, walls, and around windows) will make a noticeable difference in both comfort and energy usage.