{"id":1816,"date":"2026-05-21T05:55:38","date_gmt":"2026-05-21T05:55:38","guid":{"rendered":"https:\/\/aiper.com\/blogs\/?page_id=1816"},"modified":"2026-06-24T03:45:46","modified_gmt":"2026-06-24T03:45:46","slug":"pool-heater-calculator","status":"publish","type":"page","link":"https:\/\/aiper.com\/blogs\/pool-heater-calculator\/","title":{"rendered":"Pool Heater Calculator"},"content":{"rendered":"\n<div class=\"phc-wrapper\">\n  \n  <!-- STEP 1: Calculation Method -->\n  <div class=\"phc-step-section\">\n    <div class=\"phc-step-header\">\n      <span class=\"phc-step-num\">1<\/span>\n      <h3>Calculation Method<\/h3>\n    <\/div>\n    <div class=\"phc-toggle-group\">\n      <button type=\"button\" class=\"phc-toggle-btn active\" id=\"method-dims\" onclick=\"setMethod('dimensions')\">Pool Dimensions<\/button>\n      <button type=\"button\" class=\"phc-toggle-btn\" id=\"method-vol\" onclick=\"setMethod('volume')\">Pool Volume<\/button>\n    <\/div>\n  <\/div>\n\n  <!-- STEP 2: Pool Shape -->\n  <div class=\"phc-step-section\">\n    <div class=\"phc-step-header\">\n      <span class=\"phc-step-num\">2<\/span>\n      <h3>Select Pool Shape<\/h3>\n    <\/div>\n    <div class=\"phc-shape-grid\">\n      <div class=\"phc-shape-card active\" id=\"shape-rectangular\" onclick=\"setShape('rectangular')\">Rectangular<\/div>\n      <div class=\"phc-shape-card\" id=\"shape-lshaped\" onclick=\"setShape('lshaped')\">L-Shaped<\/div>\n      <div class=\"phc-shape-card\" id=\"shape-circle\" onclick=\"setShape('circle')\">Circle<\/div>\n      <div class=\"phc-shape-card\" id=\"shape-triangular\" onclick=\"setShape('triangular')\">Triangular<\/div>\n      <div class=\"phc-shape-card\" id=\"shape-kidney\" onclick=\"setShape('kidney')\">Kidney<\/div>\n      <div class=\"phc-shape-card\" id=\"shape-oval\" onclick=\"setShape('oval')\">Oval<\/div>\n      <div class=\"phc-shape-card\" id=\"shape-oblong\" onclick=\"setShape('oblong')\">Oblong<\/div>\n    <\/div>\n  <\/div>\n\n  <!-- STEP 3: Pool Size \/ Volume -->\n  <div class=\"phc-step-section\">\n    <div class=\"phc-step-header\" style=\"justify-content: space-between; align-items: center;\">\n      <div style=\"display: flex; align-items: center; gap: 12px;\">\n        <span class=\"phc-step-num\">3<\/span>\n        <h3 id=\"step3-title\">Pool Size<\/h3>\n      <\/div>\n      <!-- Unit Toggles for Step 3 -->\n      <div id=\"unit-toggle-dims\" class=\"phc-mini-toggle\">\n        <span class=\"active\" id=\"unit-ft\" onclick=\"setDimUnit('ft')\">ft<\/span>\n        <span id=\"unit-m\" onclick=\"setDimUnit('m')\">m<\/span>\n      <\/div>\n      <div id=\"unit-toggle-vol\" class=\"phc-mini-toggle\" style=\"display: none;\">\n        <span class=\"active\" id=\"unit-gal\" onclick=\"setVolUnit('gal')\">gal<\/span>\n        <span id=\"unit-l\" onclick=\"setVolUnit('l')\">liters<\/span>\n        <span id=\"unit-m3\" onclick=\"setVolUnit('m3')\">m\u00b3<\/span>\n      <\/div>\n    <\/div>\n\n    <!-- Dynamic Inputs Based on Method & Shape -->\n    <div id=\"inputs-dimensions-container\">\n      <div class=\"phc-grid-inputs\" id=\"fields-rectangular\">\n        <div class=\"phc-field\"><label>Length (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"rect-len\" value=\"30\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Width (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"rect-wid\" value=\"15\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Shallow End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"rect-shallow\" value=\"3\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Deep End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"rect-deep\" value=\"6\" min=\"0\"><\/div>\n      <\/div>\n\n      <div class=\"phc-grid-inputs\" id=\"fields-lshaped\" style=\"display: none;\">\n        <div class=\"phc-field\"><label>Total Length (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"l-tot-len\" value=\"40\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Total Width (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"l-tot-wid\" value=\"20\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Short Arm Length (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"l-arm-len\" value=\"15\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Short Arm Width (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"l-arm-wid\" value=\"10\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Shallow End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"l-shallow\" value=\"3\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Deep End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"l-deep\" value=\"6\" min=\"0\"><\/div>\n      <\/div>\n\n      <div class=\"phc-grid-inputs\" id=\"fields-circle\" style=\"display: none;\">\n        <div class=\"phc-field\"><label>Radius (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"circ-rad\" value=\"9\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Shallow End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"circ-shallow\" value=\"4\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Deep End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"circ-deep\" value=\"4\" min=\"0\"><\/div>\n      <\/div>\n\n      <div class=\"phc-grid-inputs\" id=\"fields-triangular\" style=\"display: none;\">\n        <div class=\"phc-field\"><label>Base (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"tri-base\" value=\"20\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Height (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"tri-height\" value=\"15\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Shallow End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"tri-shallow\" value=\"3\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Deep End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"tri-deep\" value=\"5\" min=\"0\"><\/div>\n      <\/div>\n\n      <div class=\"phc-grid-inputs\" id=\"fields-kidney\" style=\"display: none;\">\n        <div class=\"phc-field\"><label>Length (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"kid-len\" value=\"28\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Width (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"kid-wid\" value=\"14\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Shallow End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"kid-shallow\" value=\"3.5\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Deep End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"kid-deep\" value=\"5.5\" min=\"0\"><\/div>\n      <\/div>\n\n      <div class=\"phc-grid-inputs\" id=\"fields-oval\" style=\"display: none;\">\n        <div class=\"phc-field\"><label>Length \/ Long Axis (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"oval-len\" value=\"30\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Width \/ Short Axis (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"oval-wid\" value=\"15\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Shallow End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"oval-shallow\" value=\"3\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Deep End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"oval-deep\" value=\"6\" min=\"0\"><\/div>\n      <\/div>\n\n      <div class=\"phc-grid-inputs\" id=\"fields-oblong\" style=\"display: none;\">\n        <div class=\"phc-field\"><label>Large Diameter (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"ob-ldia\" value=\"16\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Small Diameter (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"ob-sdia\" value=\"12\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Length (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"ob-len\" value=\"32\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Shallow End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"ob-shallow\" value=\"3\" min=\"0\"><\/div>\n        <div class=\"phc-field\"><label>Deep End Depth (<span class=\"d-unit\">ft<\/span>)<\/label><input type=\"number\" id=\"ob-deep\" value=\"6\" min=\"0\"><\/div>\n      <\/div>\n    <\/div>\n\n    <div id=\"inputs-volume-container\" style=\"display: none;\">\n      <div class=\"phc-grid-inputs\">\n        <div class=\"phc-field\">\n          <label>Pool Volume (<span id=\"v-input-unit\">gallons<\/span>)<\/label>\n          <input type=\"number\" id=\"input-pure-volume\" value=\"15000\" min=\"0\">\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- STEP 4: Heating Parameters -->\n  <div class=\"phc-step-section\">\n    <div class=\"phc-step-header\" style=\"justify-content: space-between; align-items: center;\">\n      <div style=\"display: flex; align-items: center; gap: 12px;\">\n        <span class=\"phc-step-num\">4<\/span>\n        <h3>Heating Parameters<\/h3>\n      <\/div>\n      <div class=\"phc-mini-toggle\">\n        <span class=\"active\" id=\"temp-f\" onclick=\"setTempUnit('F')\">\u00b0F<\/span>\n        <span id=\"temp-c\" onclick=\"setTempUnit('C')\">\u00b0C<\/span>\n      <\/div>\n    <\/div>\n    <div class=\"phc-grid-inputs\">\n      <div class=\"phc-field\">\n        <label>Starting Pool Temp (<span class=\"t-unit\">\u00b0F<\/span>)<\/label>\n        <input type=\"number\" id=\"heat-start\" value=\"65\">\n      <\/div>\n      <div class=\"phc-field\">\n        <label>Desired Water Temp (<span class=\"t-unit\">\u00b0F<\/span>)<\/label>\n        <input type=\"number\" id=\"heat-des\" value=\"80\">\n      <\/div>\n      <div class=\"phc-field\">\n        <label>Heat-up Time (hours)<\/label>\n        <input type=\"number\" id=\"heat-time\" value=\"24\" min=\"1\">\n        <div class=\"phc-input-note\">1 minimum suggested<\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- Action Buttons -->\n  <div class=\"phc-btn-row\">\n    <button type=\"button\" class=\"phc-btn-calc\" onclick=\"calculateHeater()\">Calculate It<\/button>\n    <button type=\"button\" class=\"phc-btn-reset\" onclick=\"resetCalculator()\">Reset<\/button>\n  <\/div>\n\n  <!-- STEP 5: Results Section -->\n  <div class=\"phc-results-section\" id=\"results-box\" style=\"display: none;\">\n    <div class=\"phc-results-header\">\n      <h3>Calculation Results<\/h3>\n      <div class=\"phc-mini-toggle result-toggle\">\n        <span class=\"active\" id=\"res-gal\" onclick=\"changeResultVolUnit('gal')\">gal<\/span>\n        <span id=\"res-l\" onclick=\"changeResultVolUnit('l')\">liters<\/span>\n        <span id=\"res-m3\" onclick=\"changeResultVolUnit('m3')\">m\u00b3<\/span>\n      <\/div>\n    <\/div>\n    \n    <div class=\"phc-results-grid\">\n      <div class=\"phc-res-card highlight\">\n        <div class=\"phc-res-label\">BTU Required<\/div>\n        <div class=\"phc-res-val\" id=\"res-btu\">&#8211;<\/div>\n        <div class=\"phc-res-sub\">BTUs per hour to meet target time<\/div>\n      <\/div>\n      <div class=\"phc-res-card\">\n        <div class=\"phc-res-label\">Pool Volume (approx.)<\/div>\n        <div class=\"phc-res-val\" id=\"res-vol-val\">&#8211;<\/div>\n        <div class=\"phc-res-sub\" id=\"res-vol-unit-lbl\">Gallons<\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<style>\n\/* CSS Styling Root Elements *\/\n.phc-wrapper {\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n  max-width: 650px;\n  margin: 20px auto;\n  background: #ffffff;\n  border: 1px solid #e2e8f0;\n  border-radius: 12px;\n  padding: 24px;\n  box-shadow: 0 4px 12px rgba(0,0,0,0.05);\n}\n.phc-title {\n  color: #1e293b;\n  margin-top: 0;\n  margin-bottom: 24px;\n  font-size: 24px;\n  font-weight: 700;\n  border-bottom: 2px solid #f1f5f9;\n  padding-bottom: 12px;\n}\n.phc-step-section {\n  background: #f8fafc;\n  border-radius: 8px;\n  padding: 16px;\n  margin-bottom: 20px;\n  border-left: 4px solid #1ecad3;\n}\n.phc-step-header {\n  display: flex;\n  align-items: center;\n  gap: 10px;\n  margin-bottom: 14px;\n}\n.phc-step-header h3 {\n  margin: 0;\n  font-size: 16px;\n  color: #334155;\n  font-weight: 600;\n}\n.phc-step-num {\n  background: #1ecad3;\n  color: #fff;\n  width: 24px;\n  height: 24px;\n  border-radius: 50%;\n  display: inline-flex;\n  align-items: center;\n  justify-content: center;\n  font-size: 12px;\n  font-weight: bold;\n}\n\n\/* Toggles & Shape Selectors *\/\n.phc-toggle-group {\n  display: flex;\n  background: #e2e8f0;\n  padding: 4px;\n  border-radius: 6px;\n}\n.phc-toggle-btn {\n  flex: 1;\n  background: transparent;\n  border: none;\n  padding: 8px 12px;\n  font-size: 14px;\n  font-weight: 500;\n  color: #475569;\n  cursor: pointer;\n  border-radius: 4px;\n  transition: all 0.2s ease;\n}\n.phc-toggle-btn.active {\n  background: #1ecad3;\n  color: white;\n}\n.phc-shape-grid {\n  display: grid;\n  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));\n  gap: 8px;\n}\n.phc-shape-card {\n  background: #ffffff;\n  border: 1px solid #cbd5e1;\n  padding: 10px;\n  text-align: center;\n  border-radius: 6px;\n  font-size: 13px;\n  cursor: pointer;\n  color: #475569;\n  font-weight: 500;\n  transition: all 0.2s ease;\n}\n.phc-shape-card:hover {\n  border-color: #1ecad3;\n  background: #f0fdfa;\n}\n.phc-shape-card.active {\n  background: #1ecad3;\n  color: white;\n  border-color: #1ecad3;\n}\n\n\/* Mini Unit Toggles *\/\n.phc-mini-toggle {\n  display: inline-flex;\n  background: #e2e8f0;\n  padding: 2px;\n  border-radius: 4px;\n}\n.phc-mini-toggle span {\n  padding: 3px 8px;\n  font-size: 11px;\n  font-weight: 600;\n  cursor: pointer;\n  border-radius: 3px;\n  color: #64748b;\n}\n.phc-mini-toggle span.active {\n  background: #fff;\n  color: #0f172a;\n  box-shadow: 0 1px 3px rgba(0,0,0,0.1);\n}\n\n\/* Form Layout Inputs *\/\n.phc-grid-inputs {\n  display: grid;\n  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));\n  gap: 12px;\n}\n.phc-field {\n  display: flex;\n  flex-direction: column;\n  gap: 4px;\n}\n.phc-field label {\n  font-size: 12px;\n  font-weight: 600;\n  color: #475569;\n}\n.phc-field input {\n  padding: 8px;\n  border: 1px solid #cbd5e1;\n  border-radius: 6px;\n  font-size: 14px;\n  color: #1e293b;\n  background: #ffffff;\n}\n.phc-field input:focus {\n  outline: none;\n  border-color: #1ecad3;\n  box-shadow: 0 0 0 2px rgba(30, 202, 211, 0.2);\n}\n.phc-input-note {\n  font-size: 11px;\n  color: #64748b;\n  margin-top: 1px;\n}\n\n\/* Submission Row *\/\n.phc-btn-row {\n  display: flex;\n  gap: 12px;\n  margin-top: 24px;\n}\n.phc-btn-calc {\n  flex: 2;\n  background: #1ecad3;\n  color: #fff;\n  border: none;\n  padding: 12px;\n  border-radius: 6px;\n  font-size: 15px;\n  font-weight: 600;\n  cursor: pointer;\n  transition: background 0.2s ease;\n}\n.phc-btn-calc:hover {\n  background: #19b2ba;\n}\n.phc-btn-reset {\n  flex: 1;\n  background: #f1f5f9;\n  color: #475569;\n  border: 1px solid #cbd5e1;\n  padding: 12px;\n  border-radius: 6px;\n  font-size: 15px;\n  font-weight: 500;\n  cursor: pointer;\n}\n.phc-btn-reset:hover {\n  background: #e2e8f0;\n}\n\n\/* Results Formatting *\/\n.phc-results-section {\n  margin-top: 24px;\n  background: #f0fdfa;\n  border: 1px solid #99f6e4;\n  border-radius: 8px;\n  padding: 18px;\n}\n.phc-results-header {\n  display: flex;\n  justify-content: space-between;\n  align-items: center;\n  margin-bottom: 14px;\n  border-bottom: 1px dashed #ccfbf1;\n  padding-bottom: 8px;\n}\n.phc-results-header h3 {\n  margin: 0;\n  font-size: 15px;\n  color: #115e59;\n}\n.phc-results-grid {\n  display: grid;\n  grid-template-columns: 1fr 1fr;\n  gap: 12px;\n}\n@media (max-width: 480px) {\n  .phc-results-grid { grid-template-columns: 1fr; }\n}\n.phc-res-card {\n  background: #ffffff;\n  padding: 14px;\n  border-radius: 6px;\n  border: 1px solid #e2e8f0;\n}\n.phc-res-card.highlight {\n  border-color: #1ecad3;\n  background: #f8fafc;\n}\n.phc-res-label {\n  font-size: 12px;\n  font-weight: 600;\n  color: #64748b;\n  text-transform: uppercase;\n  letter-spacing: 0.5px;\n}\n.phc-res-val {\n  font-size: 22px;\n  font-weight: 700;\n  color: #0f172a;\n  margin: 4px 0;\n}\n.phc-res-card.highlight .phc-res-val {\n  color: #19b2ba;\n}\n.phc-res-sub {\n  font-size: 11px;\n  color: #94a3b8;\n}\n<\/style>\n\n<script>\n\/\/ State Management Engine\nlet currentMethod = 'dimensions';\nlet currentShape = 'rectangular';\nlet dimUnit = 'ft'; \nlet volUnit = 'gal';\nlet tempUnit = 'F';\nlet resultVolUnit = 'gal';\nlet calculatedVolumeInGallons = 0;\n\nfunction setMethod(method) {\n  currentMethod = method;\n  document.getElementById('method-dims').classList.toggle('active', method === 'dimensions');\n  document.getElementById('method-vol').classList.toggle('active', method === 'volume');\n  \n  const titleEl = document.getElementById('step3-title');\n  if (method === 'dimensions') {\n    titleEl.innerText = \"Pool Size\";\n    document.getElementById('unit-toggle-dims').style.display = 'inline-flex';\n    document.getElementById('unit-toggle-vol').style.display = 'none';\n    document.getElementById('inputs-dimensions-container').style.display = 'block';\n    document.getElementById('inputs-volume-container').style.display = 'none';\n  } else {\n    titleEl.innerText = \"Pool Volume\";\n    document.getElementById('unit-toggle-dims').style.display = 'none';\n    document.getElementById('unit-toggle-vol').style.display = 'inline-flex';\n    document.getElementById('inputs-dimensions-container').style.display = 'none';\n    document.getElementById('inputs-volume-container').style.display = 'block';\n  }\n}\n\nfunction setShape(shape) {\n  currentShape = shape;\n  const cards = document.querySelectorAll('.phc-shape-card');\n  cards.forEach(card => card.classList.remove('active'));\n  document.getElementById('shape-' + shape).classList.add('active');\n  \n  \/\/ Hide all inner dimension layouts\n  const dimContainers = document.querySelectorAll('#inputs-dimensions-container .phc-grid-inputs');\n  dimContainers.forEach(el => el.style.display = 'none');\n  \n  \/\/ Show target layout\n  const targetFields = document.getElementById('fields-' + shape);\n  if (targetFields) targetFields.style.display = 'grid';\n}\n\nfunction setDimUnit(unit) {\n  dimUnit = unit;\n  document.getElementById('unit-ft').classList.toggle('active', unit === 'ft');\n  document.getElementById('unit-m').classList.toggle('active', unit === 'm');\n  \n  const labels = document.querySelectorAll('.d-unit');\n  labels.forEach(lbl => lbl.innerText = unit);\n}\n\nfunction setVolUnit(unit) {\n  volUnit = unit;\n  document.getElementById('unit-gal').classList.toggle('active', unit === 'gal');\n  document.getElementById('unit-l').classList.toggle('active', unit === 'l');\n  document.getElementById('unit-m3').classList.toggle('active', unit === 'm3');\n  \n  let unitText = 'gallons';\n  if(unit === 'l') unitText = 'liters';\n  if(unit === 'm3') unitText = 'cubic meters (m\u00b3)';\n  document.getElementById('v-input-unit').innerText = unitText;\n}\n\nfunction setTempUnit(unit) {\n  tempUnit = unit;\n  document.getElementById('temp-f').classList.toggle('active', unit === 'F');\n  document.getElementById('temp-c').classList.toggle('active', unit === 'C');\n  \n  const labels = document.querySelectorAll('.t-unit');\n  labels.forEach(lbl => lbl.innerText = '\u00b0' + unit);\n}\n\nfunction changeResultVolUnit(unit) {\n  resultVolUnit = unit;\n  document.getElementById('res-gal').classList.toggle('active', unit === 'gal');\n  document.getElementById('res-l').classList.toggle('active', unit === 'l');\n  document.getElementById('res-m3').classList.toggle('active', unit === 'm3');\n  updateResultVolumeDisplay();\n}\n\nfunction updateResultVolumeDisplay() {\n  let displayValue = 0;\n  let lbl = 'Gallons';\n  \n  if (resultVolUnit === 'gal') {\n    displayValue = calculatedVolumeInGallons;\n    lbl = 'Gallons';\n  } else if (resultVolUnit === 'l') {\n    displayValue = calculatedVolumeInGallons * 3.78541;\n    lbl = 'Liters';\n  } else if (resultVolUnit === 'm3') {\n    displayValue = calculatedVolumeInGallons * 0.00378541;\n    lbl = 'Cubic Meters (m\u00b3)';\n  }\n  \n  document.getElementById('res-vol-val').innerText = Math.round(displayValue).toLocaleString();\n  document.getElementById('res-vol-unit-lbl').innerText = lbl;\n}\n\nfunction calculateHeater() {\n  let volumeInGal = 0;\n  \n  if (currentMethod === 'dimensions') {\n    \/\/ Collect standard dynamic values converting everything to feet if entry is in meters\n    const mult = (dimUnit === 'm') ? 3.28084 : 1;\n    \n    if (currentShape === 'rectangular') {\n      let l = parseFloat(document.getElementById('rect-len').value) * mult;\n      let w = parseFloat(document.getElementById('rect-wid').value) * mult;\n      let s = parseFloat(document.getElementById('rect-shallow').value) * mult;\n      let d = parseFloat(document.getElementById('rect-deep').value) * mult;\n      let avgDepth = (s + d) \/ 2;\n      volumeInGal = l * w * avgDepth * 7.48;\n    } \n    else if (currentShape === 'lshaped') {\n      let totL = parseFloat(document.getElementById('l-tot-len').value) * mult;\n      let totW = parseFloat(document.getElementById('l-tot-wid').value) * mult;\n      let armL = parseFloat(document.getElementById('l-arm-len').value) * mult;\n      let armW = parseFloat(document.getElementById('l-arm-wid').value) * mult;\n      let s = parseFloat(document.getElementById('l-shallow').value) * mult;\n      let d = parseFloat(document.getElementById('l-deep').value) * mult;\n      let avgDepth = (s + d) \/ 2;\n      \/\/ Splitting shape into two components: main rectangle body and short arm extension\n      let area = ((totL - armL) * totW) + (armL * armW);\n      volumeInGal = area * avgDepth * 7.48;\n    } \n    else if (currentShape === 'circle') {\n      let r = parseFloat(document.getElementById('circ-rad').value) * mult;\n      let s = parseFloat(document.getElementById('circ-shallow').value) * mult;\n      let d = parseFloat(document.getElementById('circ-deep').value) * mult;\n      let avgDepth = (s + d) \/ 2;\n      volumeInGal = Math.PI * Math.pow(r, 2) * avgDepth * 7.48;\n    } \n    else if (currentShape === 'triangular') {\n      let b = parseFloat(document.getElementById('tri-base').value) * mult;\n      let h = parseFloat(document.getElementById('tri-height').value) * mult;\n      let s = parseFloat(document.getElementById('tri-shallow').value) * mult;\n      let d = parseFloat(document.getElementById('tri-deep').value) * mult;\n      let avgDepth = (s + d) \/ 2;\n      volumeInGal = 0.5 * b * h * avgDepth * 7.48;\n    } \n    else if (currentShape === 'kidney') {\n      let l = parseFloat(document.getElementById('kid-len').value) * mult;\n      let w = parseFloat(document.getElementById('kid-wid').value) * mult;\n      let s = parseFloat(document.getElementById('kid-shallow').value) * mult;\n      let d = parseFloat(document.getElementById('kid-deep').value) * mult;\n      let avgDepth = (s + d) \/ 2;\n      volumeInGal = l * w * avgDepth * 0.85 * 7.48;\n    } \n    else if (currentShape === 'oval') {\n      let l = parseFloat(document.getElementById('oval-len').value) * mult;\n      let w = parseFloat(document.getElementById('oval-wid').value) * mult;\n      let s = parseFloat(document.getElementById('oval-shallow').value) * mult;\n      let d = parseFloat(document.getElementById('oval-deep').value) * mult;\n      let avgDepth = (s + d) \/ 2;\n      volumeInGal = (l \/ 2) * (w \/ 2) * Math.PI * avgDepth * 7.48;\n    } \n    else if (currentShape === 'oblong') {\n      let lDia = parseFloat(document.getElementById('ob-ldia').value) * mult;\n      let sDia = parseFloat(document.getElementById('ob-sdia').value) * mult;\n      let len = parseFloat(document.getElementById('ob-len').value) * mult;\n      let s = parseFloat(document.getElementById('ob-shallow').value) * mult;\n      let d = parseFloat(document.getElementById('ob-deep').value) * mult;\n      let avgDepth = (s + d) \/ 2;\n      let area = (sDia * (len - sDia)) + (Math.PI * Math.pow(sDia \/ 2, 2));\n      volumeInGal = area * avgDepth * 7.48;\n    }\n  } else {\n    \/\/ Pure Volume calculation route\n    let rawVol = parseFloat(document.getElementById('input-pure-volume').value);\n    if (volUnit === 'gal') {\n      volumeInGal = rawVol;\n    } else if (volUnit === 'l') {\n      volumeInGal = rawVol \/ 3.78541;\n    } else if (volUnit === 'm3') {\n      volumeInGal = rawVol \/ 0.00378541;\n    }\n  }\n\n  \/\/ Ensure volume configuration isn't corrupted or empty\n  if(isNaN(volumeInGal) || volumeInGal <= 0) volumeInGal = 0;\n  calculatedVolumeInGallons = volumeInGal;\n\n  \/\/ Heating Math Calculations\n  let tStart = parseFloat(document.getElementById('heat-start').value);\n  let tEnd = parseFloat(document.getElementById('heat-des').value);\n  let hTime = parseFloat(document.getElementById('heat-time').value);\n\n  if (isNaN(hTime) || hTime < 1) hTime = 1;\n\n  let tempDiff = tEnd - tStart;\n  if(tempUnit === 'C') {\n    tempDiff = tempDiff * 1.8; \/\/ Convert variance scalar scale up to Fahrenheit Delta\n  }\n\n  if (tempDiff <= 0) tempDiff = 0;\n\n  \/\/ Formula: 1 Gallon of pure water weighs roughly 8.34 lbs. 1 BTU raises 1 lb water by 1\u00b0F.\n  let totalBtuNeeded = volumeInGal * 8.34 * tempDiff;\n  let btuPerHour = totalBtuNeeded \/ hTime;\n  \n  \/\/ Real world thermodynamic buffer efficiency correction factor (approx 20% loss compensation)\n  btuPerHour = btuPerHour * 1.22; \n\n  \/\/ Output formatting to View Elements\n  document.getElementById('res-btu').innerText = Math.round(btuPerHour).toLocaleString();\n  updateResultVolumeDisplay();\n  \n  document.getElementById('results-box').style.display = 'block';\n}\n\nfunction resetCalculator() {\n  \/\/ Restore interface status to defaults\n  setMethod('dimensions');\n  setShape('rectangular');\n  setDimUnit('ft');\n  setVolUnit('gal');\n  setTempUnit('F');\n  changeResultVolUnit('gal');\n  \n  \/\/ Clean all basic standard entries\n  const inputs = document.querySelectorAll('.phc-wrapper input');\n  inputs.forEach(input => {\n    if(input.id === 'heat-start') input.value = 65;\n    else if(input.id === 'heat-des') input.value = 80;\n    else if(input.id === 'heat-time') input.value = 24;\n    else if(input.id === 'rect-len' || input.id === 'oval-len') input.value = 30;\n    else if(input.id === 'rect-wid' || input.id === 'tri-height' || input.id === 'oval-wid' || input.id === 'l-arm-len') input.value = 15;\n    else if(input.id === 'rect-shallow' || input.id === 'l-shallow' || input.id === 'tri-shallow' || input.id === 'kid-shallow' || input.id === 'ob-shallow') input.value = 3;\n    else if(input.id === 'rect-deep' || input.id === 'l-deep' || input.id === 'oval-deep' || input.id === 'ob-deep') input.value = 6;\n    else if(input.id === 'input-pure-volume') input.value = 15000;\n    else if(input.id === 'l-tot-len') input.value = 40;\n    else if(input.id === 'l-tot-wid') input.value = 20;\n    else if(input.id === 'l-arm-wid') input.value = 10;\n    else if(input.id === 'circ-rad') input.value = 9;\n    else if(input.id === 'circ-shallow' || input.id === 'circ-deep') input.value = 4;\n    else if(input.id === 'tri-base') input.value = 20;\n    else if(input.id === 'kid-len') input.value = 28;\n    else if(input.id === 'kid-wid') input.value = 14;\n    else if(input.id === 'kid-deep') input.value = 5.5;\n    else if(input.id === 'ob-ldia') input.value = 16;\n    else if(input.id === 'ob-sdia') input.value = 12;\n    else if(input.id === 'ob-len') input.value = 32;\n  });\n\n  document.getElementById('results-box').style.display = 'none';\n}\n<\/script>\n\n\n<!-- aiper-tool-links -->\n<div class=\"aiper-tool-links\">\n  <div class=\"aiper-tl-section\">\n    <div class=\"aiper-tl-heading\">More Tools<\/div>\n    <div class=\"aiper-tl-tags\">\n      <a href=\"https:\/\/aiper.com\/blogs\/pool-fill-time-calculator\/\" class=\"aiper-tl-tag\">Pool Fill Time Calculator<\/a>\n<a href=\"https:\/\/aiper.com\/blogs\/pool-turnover-rate-calculator\/\" class=\"aiper-tl-tag\">Pool Turnover Rate 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<\/div>\n<\/div>\n\n<style>\n.aiper-tool-links{margin:2.5rem 0 1.5rem;padding:1.5rem 1.75rem;background:linear-gradient(135deg,rgba(148,134,247,.04),rgba(30,202,211,.04));border-radius:12px;border:1px solid rgba(148,134,247,.10)}\n.aiper-tl-section{margin-bottom:1.25rem}\n.aiper-tl-section:last-child{margin-bottom:0}\n.aiper-tl-heading{font-size:.75rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:#8899aa;margin:0 0 .65rem}\n.aiper-tl-tags{display:flex;flex-wrap:wrap;gap:.5rem}\n.aiper-tl-tag{display:inline-block;padding:.4rem .95rem;font-size:.82rem;font-weight:500;line-height:1.35;color:#9486f7;background:rgba(148,134,247,.055);border:1px solid rgba(30,202,211,.25);border-radius:22px;text-decoration:none;transition:all .18s}\n.aiper-tl-tag:hover{background:#1ecad3;color:#fff;border-color:#1ecad3;box-shadow:0 2px 10px rgba(30,202,211,.22)}\n<\/style>","protected":false},"excerpt":{"rendered":"<p>1 Calculation Method Pool Dimensions Pool Volume 2 Select Pool Shape Rectangular L-Shaped Circle Triangular Kidney Oval Oblong 3 Pool Size ft m gal liters m\u00b3 Length (ft) Width (ft) Shallow End Depth (ft) Deep End Depth (ft) Total Length (ft) Total Width (ft) Short Arm Length (ft) Short Arm Width (ft) Shallow End Depth&#8230;<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-1816","page","type-page","status-publish","hentry"],"lang":"en","translations":{"en":1816,"de":2100,"fr":2101,"es":2102},"_links":{"self":[{"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/pages\/1816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/comments?post=1816"}],"version-history":[{"count":4,"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/pages\/1816\/revisions"}],"predecessor-version":[{"id":4287,"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/pages\/1816\/revisions\/4287"}],"wp:attachment":[{"href":"https:\/\/aiper.com\/blogs\/wp-json\/wp\/v2\/media?parent=1816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}