Electric boiler combis, also known as electric combi boilers, are a versatile and efficient heating solution for residential properties. These innovative appliances combine the functions of a traditional boiler and a water heater, providing both space heating and domestic hot water from a single, compact unit. In this comprehensive guide, we’ll delve into the technical specifications, efficiency, installation, and maintenance of electric boiler combis, as well as explore their advantages and how they compare to gas boilers.
Technical Specifications
ComboMax ULTRA Electric Boiler Combi
The ComboMax ULTRA is a high-performance electric boiler combi that can heat large buildings up to 4,750 square feet. This powerhouse boiler can provide domestic hot water in less than 7 seconds, ensuring a steady supply of hot water for your home. Available in two sizes, the ComboMax ULTRA offers performance levels ranging from 4.5 kW to 29 kW, catering to a wide range of heating and hot water demands. Backed by a 15-year warranty, the ComboMax ULTRA is a reliable and long-lasting solution for your home’s heating and hot water needs.
EHS Electric Combi Boilers
EHS Electric Combi Boilers are another popular option in the electric boiler combi market. These boilers are available in outputs from 8 kW to 24 kW, making them suitable for smaller flats or homes with a single bathroom. Each EHS Electric Combi Boiler includes a built-in pump and a 5-litre pre-plumbed Expansion Vessel for the heating circuit, simplifying the installation process.
Efficiency and Cost
Efficiency
One of the standout features of electric boiler combis is their exceptional efficiency. These appliances boast efficiency rates of 98-99%, meaning that for every 1 kW of electricity used, the boiler produces almost 1 kW of heat. This high level of efficiency translates to significant energy savings and reduced environmental impact compared to traditional heating systems.
Cost
While electric combi boilers may have higher running costs than gas boilers due to the current energy market, they can be more cost-effective in the long run. Electric boiler combis often have lower initial purchase, installation, and maintenance costs. Additionally, they do not incur standing charges or require pilot lights, which can further contribute to cost savings over time.
Installation and Maintenance
Installation
Compared to gas boilers, electric combi boilers are generally easier to install, as they do not require a flue or gas connections. This simplifies the installation process and can potentially reduce the overall cost of the project.
Maintenance
Electric boilers are relatively low-maintenance, with fewer moving parts compared to gas boilers. They do not require mandatory servicing, although regular maintenance is still recommended to ensure optimal performance and longevity. The lack of complex components and the absence of combustion processes make electric boiler combis a hassle-free heating solution for homeowners.
Advantages and Sizing
Advantages
Electric combi boilers offer several advantages that make them an attractive choice for homeowners. They are exceptionally quiet, typically operating at around 30 dB, which is comparable to the sound of a whisper. Additionally, these boilers are highly controllable, allowing for precise temperature adjustments and efficient energy management. Electric boiler combis are also suitable for off-grid properties, as they do not require a gas supply or produce carbon monoxide, making them a safe and environmentally-friendly option.
Sizing
When it comes to sizing an electric boiler combi, the primary consideration is the heating needs of the property. Most homes require approximately 6-8 kW of heat input on the coldest days to maintain a comfortable indoor temperature. By carefully assessing the size of the property, the number of rooms, and the insulation levels, you can determine the appropriate size of the electric boiler combi to ensure efficient and effective heating.
Comparison to Gas Boilers
While electric combi boilers are generally more expensive to run than gas boilers in the current energy market, this dynamic may shift in the future as energy markets evolve. However, electric boiler combis can be more cost-effective in the long run due to their lower initial and maintenance costs. Additionally, the absence of standing charges and pilot lights can contribute to further cost savings over time.
Reference
- Thermo2000 – ComboMax ULTRA: https://www.thermo2000.com/en/products/combomax-ultra/
- EHS Heating – Electric Combi Boilers: https://www.ehs-heating.com/electric-combi-boilers/
- Electric Combi Boilers Company – Shop Online: https://www.electriccombiboilerscompany.com/shop/