Home Automation ROI Calculator
ANA›Life Services Authority›National Calculator Authority›Home Automation ROI Calculator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Home Automation ROI Calculator
Estimate the return on investment for your home automation system by factoring in energy savings, security benefits, insurance discounts, and installation costs.
### System Costs
Hardware & Devices Cost ($)
Professional Installation Cost ($)
Annual Subscription / Monitoring Fee ($/year)
Annual Maintenance Cost ($/year)
### Energy Savings
Current Monthly Energy Bill ($)
Expected Energy Savings from Automation (%)
### Security & Insurance Benefits
Current Annual Home Insurance Premium ($)
Insurance Discount for Smart Security (%)
Estimated Annual Theft/Damage Risk Reduction Value ($)
### Convenience & Property Value
Annual Convenience Value Estimate ($/year)
Time saved, remote access, peace of mind — assign a personal dollar value.
Current Home Market Value ($)
Estimated Property Value Increase from Automation (%)
### Analysis Period
Analysis Period (Years)
Discount Rate / Cost of Capital (%)
Used to calculate Net Present Value (NPV). Typical range: 3–8%.
Calculate ROI
function homCalc() { var hardware = parseFloat(document.getElementById('hom_hardware').value); var install = parseFloat(document.getElementById('hom_install').value); var subscription = parseFloat(document.getElementById('hom_subscription').value); var maintenance = parseFloat(document.getElementById('hom_maintenance').value); var energyBill = parseFloat(document.getElementById('hom_energy_bill').value); var energySavPct = parseFloat(document.getElementById('hom_energy_savings_pct').value); var insuranceAnnual = parseFloat(document.getElementById('hom_insurance_annual').value); var insuranceDisc = parseFloat(document.getElementById('hom_insurance_discount').value); var theftReduction = parseFloat(document.getElementById('hom_theft_reduction').value); var convenienceVal = parseFloat(document.getElementById('hom_convenience_value').value); var homeValue = parseFloat(document.getElementById('hom_home_value').value); var propIncrPct = parseFloat(document.getElementById('hom_property_increase_pct').value); var years = parseFloat(document.getElementById('hom_years').value); var discountRate = parseFloat(document.getElementById('hom_discount_rate').value);
var errors = []; if (isNaN(hardware) || hardware 60) errors.push("Energy savings percentage must be between 0 and 60."); if (isNaN(insuranceAnnual) || insuranceAnnual 25) errors.push("Insurance discount must be between 0 and 25%."); if (isNaN(theftReduction) || theftReduction 10) errors.push("Property value increase must be between 0 and 10%."); if (isNaN(years) || years 30) errors.push("Analysis period must be between 1 and 30 years."); if (isNaN(discountRate) || discountRate 20) errors.push("Discount rate must be between 0 and 20%.");
if (errors.length > 0) { document.getElementById('hom_result').innerHTML = 'Please fix the following:' + errors.map(function(e){ return ''; }).join('') + ''; return; }
// ── Initial Investment ────────────────────────────────────────────────────── var initialInvestment = hardware + install;
// ── Annual Benefits ───────────────────────────────────────────────────────── var annualEnergySavings = energyBill * 12 * (energySavPct / 100); var annualInsuranceSaving = insuranceAnnual * (insuranceDisc / 100); var annualSecurityBenefit = theftReduction; var annualConvenience = convenienceVal;
var totalAnnualBenefits = annualEnergySavings + annualInsuranceSaving + annualSecurityBenefit + annualConvenience;
// ── Annual Costs (ongoing) ────────────────────────────────────────────────── var totalAnnualCosts = subscription + maintenance;
// ── Net Annual Cash Flow ──────────────────────────────────────────────────── var netAnnualCashFlow = totalAnnualBenefits - totalAnnualCosts;
// ── Property Value Gain (one-time, realised at end of period) ─────────────── var propertyValueGain = homeValue * (propIncrPct / 100);
// ── NPV Calculation ───────────────────────────────────────────────────────── // NPV = -InitialInvestment // + Σ(t=1 to n) [ NetAnnualCashFlow / (1 + r)^t ] // + PropertyValueGain / (1 + r)^n var r = discountRate / 100; var npv = -initialInvestment; var cumulativeCashFlow = -initialInvestment; var paybackYear = null;
for (var t = 1; t = 0) { paybackYear = t; } } // Add terminal property value gain discounted to present npv += propertyValueGain / Math.pow(1 + r, years);
- // ── Simple Payback Period (undiscounted) ────────────────────────────────────
- var simplePayback = (netAnnualCashFlow > 0)
- ? initialInvestment / netAnnualCashFlow
- Infinity;
// ── Total Undiscounted Return ─────────────────────────────────────────────── var totalBenefitsUndiscounted = netAnnualCashFlow * years + propertyValueGain; var totalCostUndiscounted = initialInvestment + totalAnnualCosts * years; var simpleROI = ((totalBenefitsUndiscounted - initialInvestment) / initialInvestment) * 100;
- // ── IRR (Newton-Raphson approximation) ─────────────────────────────────────
- // Cash flows: CF[0] = -initialInvestment, CF[t] = netAnnualCashFlow, CF[n] += propertyValueGain
- function npvAtRate(rate) {
- var val = -initialInvestment;
- for (var t = 1; t 0 || propertyValueGain > 0) {
- var guess = 0.1;
- for (var iter = 0; iter -999)
- ? fmtPct(irr)
- 'N/A';
var npvColor = npv >= 0 ? '#27ae60' : '#e74c3c'; var roiColor = simpleROI >= 0 ? '#27ae60' : '#e74c3c';
document.getElementById('hom_result').innerHTML = '### Home Automation ROI Results ' +
'#### 💰 Investment Summary ' + '' + 'Initial Investment (Hardware + Install)$' + fmt(initialInvestment) + '' + 'Total Annual Ongoing Costs$' + fmt(totalAnnualCosts) + '/yr' + '' +
'#### 📈 Annual Benefits Breakdown ' + '' + 'Energy Savings$' + fmt(annualEnergySavings) + '/yr' + 'Insurance Premium Savings$' + fmt(annualInsuranceSaving) + '/yr' + 'Security / Theft Risk Reduction$' + fmt(annualSecurityBenefit) + '/yr' + 'Convenience Value$' + fmt(annualConvenience) + '/yr' + 'Total Annual Benefits$' + fmt(totalAnnualBenefits) + '/yr' + 'Net Annual Cash Flow$' + fmt(netAnnualCashFlow) + '/yr' + 'Property Value Gain (one-time)$' + fmt(propertyValueGain) + '' + '' +
'#### 📊 ROI Metrics (' + years + '-Year Period) ' + '' + 'Net Present Value (NPV)$' + fmt(npv) + '' + 'Simple ROI' + fmtPct(simpleROI) + '' + 'Internal Rate of Return (IRR)' + irrText + '' + 'Simple Payback Period' + paybackText + '' + '' +
- '' +
- (npv >= 0
- ? '✅ Positive NPV indicates this investment creates value at your chosen discount rate.'
- '⚠️ Negative NPV suggests the investment may not recover costs at your chosen discount rate. Consider extending the analysis period or increasing savings estimates.') + '
'; }
#### Formulas Used
Initial Investment: Initial Investment = Hardware Cost + Installation Cost
Annual Benefits: Energy Savings = Monthly Bill × 12 × (Energy Savings % / 100) Insurance Savings = Annual Premium × (Discount % / 100) Total Annual Benefits = Energy Savings + Insurance Savings + Security Benefit + Convenience Value
Net Annual Cash Flow: Net Annual Cash Flow = Total Annual Benefits − (Subscription + Maintenance)
Simple Payback Period: Payback = Initial Investment / Net Annual Cash Flow
Simple ROI: ROI (%) = [(Net Annual Cash Flow × Years + Property Value Gain − Initial Investment) / Initial Investment] × 100
Net Present Value (NPV): NPV = −Initial Investment + Σt=1n [Net Annual Cash Flow / (1 + r)t] + Property Value Gain / (1 + r)n
Internal Rate of Return (IRR): IRR is the discount rate r* where NPV = 0, solved numerically via Newton-Raphson iteration.
Property Value Gain: Property Value Gain = Home Market Value × (Property Increase % / 100)
#### Assumptions & References
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