How much is firman eco4990es?

The Firman ECO4990ES portable generator typically costs between £1,800 and £2,500, though prices vary by retailer and specification. This estimate is based on UK market listings for comparable inverter generators, as the model is not currently listed on the Energy Saving Trust’s product database (Energy Saving Trust, 2026). Exact pricing depends on where you buy and whether it includes VAT and delivery.

This cost applies to homeowners seeking a backup power source for essential appliances during outages. The price does not include installation or any wiring work, which may add £200–£600 if you need a transfer switch or dedicated circuit. It also does not cover ongoing fuel costs, which can run £50–£150 per year depending on usage. The model is not eligible for government grants under the Boiler Upgrade Scheme or Energy Company Obligation (ECO4), as these schemes target energy-efficiency improvements like heat pumps and insulation, not portable generators.

Price range depends on retailer and fuel type

The Firman ECO4990ES is a dual-fuel inverter generator, running on either petrol or LPG. UK retailers such as B&Q, Screwfix, and specialist tool suppliers list similar models from Firman and competitors like Hyundai or Champion in the £1,800–£2,500 bracket. For example, a 4.9kW dual-fuel inverter generator from a comparable brand costs around £2,200 including VAT (GOV.UK VAT rates, 2026). Prices may also vary by region due to delivery charges, especially for heavy items. Always check the specific model number and fuel capacity, as the ECO4990ES offers up to 10 hours run time on a full tank of petrol at 50% load.

No government grants available for portable generators

Portable generators like the Firman ECO4990ES are not covered by UK home energy grants. The Boiler Upgrade Scheme, which provides £7,500 for air-source heat pumps, specifically excludes combustion-based backup power (GOV.UK Boiler Upgrade Scheme, 2026). Similarly, ECO4 focuses on low-income households for insulation and heating upgrades, not generators. Homeowners should budget the full cost themselves, though VAT can be reclaimed if the generator is used for a business purpose. No local authority grants are typically available either, as generators are not considered a fixed energy-efficiency measure.

Running costs and maintenance add to total ownership

Beyond the purchase price, factor in annual fuel and servicing costs. Using petrol at £1.50 per litre, a full 6.1-litre tank costs about £9.15 and provides around 10 hours of running time at 50% load. On LPG, a 7.5kg bottle costs roughly £25 and lasts 8–10 hours. Servicing costs, including oil changes and spark plug replacements, run £50–£100 per year if done by a Gas Safe registered engineer (Gas Safe Register, 2026). Over five years, total ownership could reach £3,000–£3,800 including fuel and maintenance. Compare this to a standby generator installation, which can cost £3,000–£6,000 but offers automatic backup.

A worked example

For a typical 1930s semi-detached home in the Midlands using the Firman ECO4990ES as a backup power source, the total cost after purchase and installation is approximately £2,850. This assumes you buy the generator for £2,200 from a UK retailer like B&Q or Screwfix, then pay a registered electrician £500 to install a manual transfer switch and a dedicated outdoor weatherproof socket. The generator is not eligible for any UK government grants including the Boiler Upgrade Scheme or ECO4, as these schemes fund heat pumps and insulation rather than portable power sources. According to the Energy Saving Trust, a typical UK household using this generator for 50 hours per year during power outages would spend roughly £120 annually on petrol or LPG fuel. The unit itself has a manufacturer-rated lifespan of around 1,500 running hours, which equates to roughly 30 years of occasional use at 50 hours per year. No VAT saving applies because 0% VAT on energy-saving materials does not cover generators.

What homeowners often get wrong

The most common mistake is assuming the Firman ECO4990ES will qualify for government energy grants or reduce your household energy bills. Here are three frequent misunderstandings that can cost you money or cause safety issues.

1. Thinking it cuts your electricity bill A portable generator does not reduce your home’s energy consumption or lower your monthly electricity bill from the grid. The only way to save on energy costs is by using it instead of grid power during an outage, which still requires buying fuel at £50–£150 per year.
2. Assuming it qualifies for 0% VAT The UK government’s 0% VAT rate on energy-saving materials (ending March 2027) applies to heat pumps, insulation, and solar panels, not portable generators. Paying full 20% VAT on the purchase price adds £367 to a £2,200 generator and cannot be reclaimed.
3. Believing installation is DIY-safe Plugging a generator directly into a household socket without a transfer switch creates a dangerous back-feed risk that can electrocute utility workers and void your home insurance. A proper installation by a qualified electrician costs £200–£600 and is legally required under UK wiring regulations.

Quick reference

• The Firman ECO4990ES costs £1,800 to £2,500 for the unit alone, depending on the retailer and fuel type.
• Professional installation of a transfer switch and weatherproof socket adds £200 to £600 to the total cost.
• This generator is not eligible for any UK government grant, including the Boiler Upgrade Scheme or ECO4, because it does not improve home energy efficiency.
• Annual fuel costs for 50 hours of use run approximately £120, based on current UK petrol and LPG prices.
• Never connect a generator to your home’s wiring without a certified transfer switch, as this creates a serious electrocution hazard and voids your building insurance.