An office infrared-heating ROI calculation starts with a fair comparison. What problem are you solving, what would you invest otherwise and which costs actually change? An attractive product price says little about a complete heating plan’s financial result. This guide distinguishes ROI, payback and total costs.
Key assumptions
Use the same occupancy, comfort requirements and analysis period for every option. Compare complete installations rather than gas use with one panel’s electricity. Show uncertainties and both favourable and unfavourable scenarios. The result may also be that an investment does not pay back.
Defining the baseline and investment
Choose a realistic baseline: retaining existing heating, necessary replacement or an alternative such as a heat pump. Record investment costs for each scenario. For alternatives, use the investment difference; for a stand-alone project, state the total investment basis explicitly. Do not mix methods.
Include panels, controls, installation, wiring, electrical upgrades, preparation, making good and commissioning. A low hardware price can conceal additional work. Treat VAT consistently for the organisation and have its accountant assess financial treatment.
Variables that affect the result
Use measured energy where possible and separate heating from other operations. Account for occupancy, opening times and weather differences. For the new design, establish heat loss, output and expected running hours per zone. Fixed W/m³ rules or guaranteed temperature reductions are unreliable financial inputs.
Calculate annual energy costs using the applicable contract, adding maintenance, management, communications and replacements. Boiler costs disappear only if the boiler actually goes; gas standing charges only if the connection ends. Do not automatically value solar power at zero; consider winter and timing.
Potential comfort benefits may be described qualitatively. Do not enter reduced absence, productivity, property value or improved energy labels as guaranteed euro returns. Such effects need their own evidence and do not automatically follow from infrared heating.
ROI and payback in a fictional example
In this simple example, investment is €10,000 higher than the baseline. Net annual cost benefit is €1,200 after extra energy and management costs. Ten years gives €12,000. Ignoring interest, price changes and residual value, net gain after investment is €2,000. These are fictional figures, not a quote or office forecast.
Defining ROI as net gain over the chosen period divided by investment gives €2,000 / €10,000 × 100% = 20% over ten years. This is not a 20% annual return. Simple payback is €10,000 / €1,200, about 8.3 years. Both use the same assumptions but answer different questions.
If annual benefit falls to €600, simple payback is about 16.7 years and the ten-year result is negative. Zero or negative annual benefit gives no finite simple payback. A real decision may need cash-flow analysis including time value, replacement timing and residual value.
Assessing financial incentives separately
Include grants or tax outcomes only after the actual investment and organisation have been checked against current conditions. A deduction is not a cash payment of that amount. Have calculation, eligibility, deadlines and interactions assessed by a financial specialist. Also show the case without uncertain support.
From calculations to a measured trial
Where possible, choose a representative trial zone and define baseline measurements, comfort criteria and monitoring. Check mounting, electrical capacity and compatible controls with the installer. Meter the whole system and update the business case after the trial. Expand only when technical, operational and cost assumptions are adequately supported.
Discussing an evidence-based proposal with us
We support business end users, installers and wholesalers with products and project quotations. Share usage data, plans, existing equipment and cost-comparison assumptions. A quote specifies supply; without measurement and analysis it does not guarantee ROI or an energy label.
Request a business project quote
Frequently asked questions
Is maintenance zero euros per year?
Not as a general assumption. Cleaning, checks, controls, batteries where used, management and replacement remain relevant. Review the manual and management plan and budget realistically in both scenarios.