Smoke Odor Treatment Area Calculator
ANA›Life Services Authority›National Calculator Authority›Smoke Odor Treatment Area 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; } }
Smoke Odor Treatment Area Calculator
Estimate the total treatment area and recommended product quantity needed to effectively neutralize smoke odors based on room dimensions, smoke severity, and surface types.
Room Length (ft)
Room Width (ft)
Ceiling Height (ft)
Number of Rooms
Smoke Severity
Light (e.g. candle, minor cooking) Moderate (e.g. cigarette, fireplace) Heavy (e.g. prolonged smoking, fire damage) Severe (e.g. structure fire, extensive damage)
Primary Surface Type
Smooth / Painted Walls Standard Drywall Textured / Popcorn Ceiling Porous (brick, concrete, unfinished wood) Fabric / Upholstery Heavy Room
Number of Windows
Number of Doors
Calculate Treatment Area
function smoCalc() { var length = parseFloat(document.getElementById('smo-length').value); var width = parseFloat(document.getElementById('smo-width').value); var height = parseFloat(document.getElementById('smo-height').value); var rooms = parseInt(document.getElementById('smo-rooms').value); var severity = parseFloat(document.getElementById('smo-severity').value); var surface = parseFloat(document.getElementById('smo-surface').value); var windows = parseInt(document.getElementById('smo-windows').value); var doors = parseInt(document.getElementById('smo-doors').value);
// --- Validation --- var errors = []; if (isNaN(length) || length 30) errors.push("Ceiling height must be between 6 and 30 ft."); if (isNaN(rooms) || rooms 500 || width > 500) errors.push("Room dimensions seem unusually large. Please verify.");
var resultDiv = document.getElementById('smo-result'); if (errors.length > 0) { resultDiv.style.display = 'block'; resultDiv.innerHTML = 'Please fix the following:' + errors.map(function(e){ return ''; }).join('') + ''; return; }
// --- Core Geometry (per room) --- // Floor area var floorArea = length * width;
// Ceiling area (same as floor) var ceilingArea = floorArea;
// Wall area (gross, all 4 walls) var wallAreaGross = 2 * (length + width) * height;
// Deductions: standard window ~15 sq ft, standard door ~20 sq ft var windowDeduction = windows * 15; var doorDeduction = doors * 20; var wallAreaNet = Math.max(wallAreaGross - windowDeduction - doorDeduction, 0);
// Total surface area per room var totalSurfacePerRoom = floorArea + ceilingArea + wallAreaNet;
// Total surface area all rooms var totalSurface = totalSurfacePerRoom * rooms;
// Volume per room (for air treatment / ozone reference) var volumePerRoom = floorArea * height; var totalVolume = volumePerRoom * rooms;
// --- Adjusted Treatment Area --- // Adjusted for severity and surface porosity // Formula: TreatmentArea = TotalSurface × SeverityFactor × SurfaceFactor var treatmentArea = totalSurface * severity * surface;
// --- Product Quantity Estimates --- // Odor sealant/primer: covers ~200 sq ft per gallon (industry standard) var sealerCoverage = 200; // sq ft / gallon var sealerGallons = treatmentArea / sealerCoverage;
// Odor neutralizer spray: covers ~300 sq ft per quart var sprayQtCoverage = 300; // sq ft / quart var sprayQuarts = treatmentArea / sprayQtCoverage;
// Ozone generator: 1 hr per 100 cu ft of volume (general guideline) var ozoneHours = totalVolume / 100;
// Thermal fogger: 1 gallon per 10,000 cu ft var foggerGallons = totalVolume / 10000;
// --- Air Changes Needed --- // ASHRAE recommends 6–12 ACH for smoke remediation; use 8 ACH var targetACH = 8; var cfmNeeded = (totalVolume * targetACH) / 60; // CFM = (Volume × ACH) / 60
// --- Helper: round to 2 decimals --- function r2(v) { return Math.round(v * 100) / 100; } function r0(v) { return Math.round(v); }
// --- Severity label --- var sevLabel = document.getElementById('smo-severity').options[document.getElementById('smo-severity').selectedIndex].text; var surLabel = document.getElementById('smo-surface').options[document.getElementById('smo-surface').selectedIndex].text;
resultDiv.style.display = 'block'; resultDiv.innerHTML = '### Treatment Area Results ' +
'' +
'' + 'Adjusted Treatment Area' + '' + r0(treatmentArea).toLocaleString() + ' sq ft' + '' +
'' + 'Total Raw Surface Area' + '' + r0(totalSurface).toLocaleString() + ' sq ft' + '' +
'' + 'Total Volume (all rooms)' + '' + r0(totalVolume).toLocaleString() + ' cu ft' + '' +
'' + 'Odor Sealant / Primer Needed' + '' + r2(sealerGallons) + ' gallons' + '' +
'' + 'Odor Neutralizer Spray Needed' + '' + r2(sprayQuarts) + ' quarts' + '' +
'' + 'Ozone Treatment Time (est.)' + '' + r2(ozoneHours) + ' hours' + '' +
'' + 'Thermal Fogger Fluid Needed' + '' + r2(foggerGallons) + ' gallons' + '' +
'' + 'Ventilation Required (8 ACH)' + '' + r0(cfmNeeded).toLocaleString() + ' CFM' + '' +
'' +
'' + '#### Calculation Breakdown ' + '' + 'Floor Area (per room)' + r2(floorArea) + ' sq ft' + 'Ceiling Area (per room)' + r2(ceilingArea) + ' sq ft' + 'Net Wall Area (per room)' + r2(wallAreaNet) + ' sq ft' + 'Raw Surface Area (per room)' + r2(totalSurfacePerRoom) + ' sq ft' + 'Number of Rooms' + rooms + '' + 'Total Raw Surface Area' + r0(totalSurface) + ' sq ft' + 'Severity Factor (' + sevLabel + ')× ' + severity + '' + 'Surface Factor (' + surLabel + ')× ' + surface + '' + 'Adjusted Treatment Area' + r0(treatmentArea).toLocaleString() + ' sq ft' + '' + ''; }
#### Formulas Used
Surface Area per Room:
Floor Area = Length × Width
Ceiling Area = Length × Width
Net Wall Area = [2 × (Length + Width) × Height] − (Windows × 15 sq ft) − (Doors × 20 sq ft)
Total Surface Area = Floor + Ceiling + Net Walls
Adjusted Treatment Area:
Treatment Area = Total Surface Area × Rooms × Severity Factor × Surface Factor
Product Quantities:
Odor Sealant (gal) = Treatment Area ÷ 200 sq ft/gal
Neutralizer Spray (qt) = Treatment Area ÷ 300 sq ft/qt
Ozone Time (hr) = Total Volume ÷ 100 cu ft/hr
Thermal Fogger (gal) = Total Volume ÷ 10,000 cu ft/gal
Ventilation (CFM):
CFM = (Total Volume × 8 ACH) ÷ 60
#### Assumptions & References
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