{"product_id":"hayward-w3hp21105t-heatpro-110k-btu-heat-only-pool-heat-pump","title":"Hayward W3HP21105T HeatPro 110,000 BTU Heat Only Pool Heat Pump","description":"\n\u003cstyle\u003e\n  .hwhp110-wrap, .hwhp110-wrap * { box-sizing: border-box; }\n  .hwhp110-wrap {\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #1a1a1a;\n    line-height: 1.6;\n  }\n\n  \/* Hero *\/\n  .hwhp110-hero {\n    background: linear-gradient(135deg, #b22222 0%, #f57c2b 100%);\n    color: #fff;\n    padding: 60px 40px;\n    border-radius: 16px;\n    text-align: center;\n    margin-bottom: 40px;\n  }\n  .hwhp110-hero h1 { font-size: 2.8em; margin: 0 0 12px; font-weight: 800; letter-spacing: -0.02em; }\n  .hwhp110-tagline { font-size: 1.25em; opacity: 0.95; margin: 0 0 28px; }\n  .hwhp110-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }\n  .hwhp110-badge {\n    background: rgba(255,255,255,0.18);\n    backdrop-filter: blur(10px);\n    -webkit-backdrop-filter: blur(10px);\n    border: 1px solid rgba(255,255,255,0.3);\n    color: #fff;\n    padding: 10px 20px;\n    border-radius: 50px;\n    font-size: 0.95em;\n    font-weight: 600;\n  }\n\n  \/* Intro *\/\n  .hwhp110-intro {\n    max-width: 850px;\n    margin: 0 auto 40px;\n    text-align: center;\n    font-size: 1.1em;\n    color: #333;\n  }\n\n  \/* Stat strip *\/\n  .hwhp110-stats {\n    background: linear-gradient(135deg, #5a0f0f 0%, #b22222 100%);\n    color: #fff;\n    border-radius: 16px;\n    padding: 32px;\n    display: grid;\n    grid-template-columns: repeat(5, 1fr);\n    gap: 16px;\n    margin-bottom: 48px;\n  }\n  .hwhp110-stat { text-align: center; }\n  .hwhp110-stat-value { font-size: 1.9em; font-weight: 800; color: #ffb073; }\n  .hwhp110-stat-label { font-size: 0.85em; opacity: 0.85; text-transform: uppercase; letter-spacing: 0.05em; margin-top: 4px; }\n\n  \/* Big features *\/\n  .hwhp110-feature {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 40px;\n    align-items: center;\n    background: #f7f8fc;\n    border-radius: 16px;\n    padding: 40px;\n    margin-bottom: 32px;\n  }\n  .hwhp110-feature.hwhp110-reverse .hwhp110-feature-visual { order: 2; }\n  .hwhp110-feature h3 { font-size: 1.6em; margin: 0 0 16px; color: #1a1a1a; }\n  .hwhp110-feature h3 .hwhp110-accent { color: #f57c2b; }\n  .hwhp110-feature p { margin: 0; font-size: 1.05em; color: #333; }\n  .hwhp110-visual {\n    background: linear-gradient(135deg, #b22222 0%, #f57c2b 100%);\n    border-radius: 12px;\n    aspect-ratio: 4 \/ 3;\n    display: flex;\n    flex-direction: column;\n    align-items: center;\n    justify-content: center;\n    color: #fff;\n  }\n  .hwhp110-visual.hwhp110-visual-light { background: #f5f7fc; 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box-shadow: 0 12px 30px rgba(178,34,34,0.14); }\n  .hwhp110-emoji { font-size: 2em; }\n  .hwhp110-feature-card h5 { margin: 12px 0 8px; font-size: 1.1em; color: #1a1a1a; }\n  .hwhp110-feature-card p { margin: 0; color: #444; font-size: 0.95em; }\n\n  \/* Warning *\/\n  .hwhp110-warning {\n    background: #fff7e0;\n    border-left: 6px solid #f5a623;\n    border-radius: 12px;\n    padding: 24px 28px;\n    margin-bottom: 48px;\n  }\n  .hwhp110-warning h4 { margin: 0 0 8px; color: #8a5b00; font-size: 1.15em; }\n  .hwhp110-warning p { margin: 0; color: #5a3d00; }\n\n  \/* Spec grid *\/\n  .hwhp110-spec-grid {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n    background: #f7f8fc;\n    border-radius: 16px;\n    overflow: hidden;\n  }\n  .hwhp110-spec-row {\n    display: flex;\n    justify-content: space-between;\n    gap: 12px;\n    padding: 14px 20px;\n    border-bottom: 1px solid #e1e6ed;\n    font-size: 0.98em;\n  }\n  .hwhp110-spec-key { font-weight: 600; color: #b22222; }\n  .hwhp110-spec-val { color: #1a1a1a; text-align: right; }\n\n  \/* FAQ *\/\n  .hwhp110-faq-card {\n    background: #fff;\n    border: 1px solid #e1e6ed;\n    border-radius: 12px;\n    padding: 24px 28px;\n    margin-bottom: 16px;\n  }\n  .hwhp110-faq-card h4 { margin: 0 0 8px; color: #b22222; font-size: 1.1em; }\n  .hwhp110-faq-card p { margin: 0; color: #333; }\n\n  \/* CTA *\/\n  .hwhp110-cta {\n    background: linear-gradient(135deg, #b22222 0%, #f57c2b 100%);\n    color: #fff;\n    border-radius: 16px;\n    padding: 50px 40px;\n    text-align: center;\n  }\n  .hwhp110-cta h2 { font-size: 2em; margin: 0 0 12px; }\n  .hwhp110-cta p { margin: 0 0 24px; font-size: 1.1em; opacity: 0.95; }\n  .hwhp110-perks { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }\n  .hwhp110-perk {\n    background: rgba(255,255,255,0.18);\n    backdrop-filter: blur(10px);\n    -webkit-backdrop-filter: blur(10px);\n    border: 1px solid rgba(255,255,255,0.3);\n    padding: 10px 20px;\n    border-radius: 50px;\n    font-size: 0.95em;\n    font-weight: 600;\n  }\n\n  \/* Responsive *\/\n  @media (max-width: 700px) {\n    .hwhp110-hero h1 { font-size: 2em; }\n    .hwhp110-stats { grid-template-columns: repeat(2, 1fr); }\n    .hwhp110-feature { grid-template-columns: 1fr; }\n    .hwhp110-feature.hwhp110-reverse .hwhp110-feature-visual { order: 0; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"hwhp110-wrap\"\u003e\n\n  \u003csection class=\"hwhp110-hero\"\u003e\n    \u003ch1\u003eHayward W3HP21105T HeatPro 110,000 BTU Heat Only Pool Heat Pump\u003c\/h1\u003e\n    \u003cp class=\"hwhp110-tagline\"\u003eExtend your swim season for less.\u003c\/p\u003e\n    \u003cdiv class=\"hwhp110-badges\"\u003e\n      \u003cspan class=\"hwhp110-badge\"\u003eAuthorized Hayward Dealer\u003c\/span\u003e\u003cspan class=\"hwhp110-badge\"\u003eFree Shipping\u003c\/span\u003e\u003cspan class=\"hwhp110-badge\"\u003e110K BTU Output\u003c\/span\u003e\u003cspan class=\"hwhp110-badge\"\u003e5.7 COP Efficiency\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003cp class=\"hwhp110-intro\"\u003eThe \u003cstrong\u003eHayward W3HP21105T HeatPro Heat Pump (SKU PST-W3HP21105T)\u003c\/strong\u003e delivers \u003cstrong\u003e110,000 BTU\u003c\/strong\u003e of heat-only output for inground pools up to roughly 20,000 gallons, using ambient air instead of gas to push your water to swim-ready temperatures. Hayward's microchannel heat exchanger (MCHX) cuts braze joints by 85%, drops the cabinet weight to \u003cstrong\u003e230 lbs\u003c\/strong\u003e, and lets the unit pull heat from outside air down to \u003cstrong\u003e40F\u003c\/strong\u003e. You get gas-pump heating without a gas bill, on a 230V single-phase circuit you already have at the equipment pad.\u003c\/p\u003e\n\n  \u003csection class=\"hwhp110-stats\"\u003e\n    \u003cdiv class=\"hwhp110-stat\"\u003e\n\u003cdiv class=\"hwhp110-stat-value\"\u003e110K BTU\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat-label\"\u003eHeating Output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat\"\u003e\n\u003cdiv class=\"hwhp110-stat-value\"\u003e5.7 COP\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat-label\"\u003eEfficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat\"\u003e\n\u003cdiv class=\"hwhp110-stat-value\"\u003e40F\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat-label\"\u003eLow Ambient\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat\"\u003e\n\u003cdiv class=\"hwhp110-stat-value\"\u003e230V\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat-label\"\u003eSingle Phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat\"\u003e\n\u003cdiv class=\"hwhp110-stat-value\"\u003e230 lbs\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-stat-label\"\u003eCabinet Weight\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \n  \u003csection class=\"hwhp110-feature\"\u003e\n    \u003cdiv class=\"hwhp110-visual hwhp110-feature-visual\"\u003e\n      \u003cspan class=\"hwhp110-visual-icon\"\u003e🌡️\u003c\/span\u003e\n      \u003cspan class=\"hwhp110-visual-label\"\u003eMCHX Core\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eMicrochannel \u003cspan class=\"hwhp110-accent\"\u003eEfficiency\u003c\/span\u003e , Built for the Pad\u003c\/h3\u003e\n      \u003cp\u003eThe HeatPro \u003cstrong\u003eMCHX heat exchanger\u003c\/strong\u003e replaces traditional tube-and-fin coils with a microchannel design that cuts braze joints by 85% and trims cabinet weight by up to 50 lbs. Less metal, less refrigerant charge, more surface area in contact with the air. The result is a quieter, lighter unit that pulls more heat out of every cubic foot of air the fan moves, while staying tough enough to survive years on a sunbaked equipment pad.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n  \n  \u003csection class=\"hwhp110-feature hwhp110-reverse\"\u003e\n    \u003cdiv class=\"hwhp110-visual hwhp110-visual-light hwhp110-feature-visual\"\u003e\n      \u003cspan class=\"hwhp110-visual-icon\"\u003e❄️\u003c\/span\u003e\n      \u003cspan class=\"hwhp110-visual-label\"\u003eLow Ambient\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003ePatented \u003cspan class=\"hwhp110-accent\"\u003eDefrost\u003c\/span\u003e  Algorithm Stretches the Season\u003c\/h3\u003e\n      \u003cp\u003eMost heat pumps fall off a cliff once outside air drops below 50F. The W3HP21105T's \u003cstrong\u003epatent-pending defrost algorithm\u003c\/strong\u003e keeps capacity up where competitors stall, with rated operation all the way down to \u003cstrong\u003e40F ambient\u003c\/strong\u003e. That means real heating in early spring and late fall, not a unit that runs all day and barely budges the thermometer. You add weeks of swim time on both ends of the calendar without touching your gas line.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n  \n  \u003csection class=\"hwhp110-feature\"\u003e\n    \u003cdiv class=\"hwhp110-visual hwhp110-visual-dark hwhp110-feature-visual\"\u003e\n      \u003cspan class=\"hwhp110-visual-icon\"\u003e🛡️\u003c\/span\u003e\n      \u003cspan class=\"hwhp110-visual-label\"\u003eTCP Armor\u003c\/span\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eTCP Coating \u003cspan class=\"hwhp110-accent\"\u003eSurvives\u003c\/span\u003e  Harsh Climates\u003c\/h3\u003e\n      \u003cp\u003eHayward's \u003cstrong\u003eTitanium Coating Protection (TCP)\u003c\/strong\u003e was developed for Naval Air Command to resist salt air, pool chemistry overspray, and UV. The whole cabinet, fan grille, and exposed cabinet fasteners are treated, so a HeatPro sitting eight feet from a saltwater pool in coastal Florida looks the same in year five as it did on day one. Pair that with the corrosion-resistant MCHX coil and you get a heat pump that ages like equipment is supposed to.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n  \n\n  \u003csection class=\"hwhp110-section\"\u003e\n    \u003ch2\u003eWho It's For\u003c\/h2\u003e\n    \u003cdiv class=\"hwhp110-app-grid\"\u003e\n      \u003cdiv class=\"hwhp110-app-card\"\u003e\n\u003ch4\u003eResidential Inground Pools\u003c\/h4\u003e\n\u003cp\u003eSized for typical 15,000 to 20,000 gallon backyard pools that want a 5 to 10 degree lift over normal swim season ambient temps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-app-card\"\u003e\n\u003ch4\u003eVinyl, Gunite, Fiberglass\u003c\/h4\u003e\n\u003cp\u003eThe 2 inch plumbing union connections drop straight into any standard inground equipment pad, no shell type restrictions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-app-card\"\u003e\n\u003ch4\u003eSolar Backup or Replacement\u003c\/h4\u003e\n\u003cp\u003ePairs well with solar panels as a backup heater for cloudy stretches, or replaces aging solar entirely with predictable, on-demand heat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-app-card\"\u003e\n\u003ch4\u003eSeason Extension\u003c\/h4\u003e\n\u003cp\u003eIdeal for owners who want March to November swim time in transitional climates without the running cost of a gas heater.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"hwhp110-section\"\u003e\n    \u003ch2\u003eWhy PST Customers Pick This\u003c\/h2\u003e\n    \u003cdiv class=\"hwhp110-feature-grid\"\u003e\n      \u003cdiv class=\"hwhp110-feature-card\"\u003e\n\u003cdiv class=\"hwhp110-emoji\"\u003e🔥\u003c\/div\u003e\n\u003ch5\u003e110,000 BTU Output\u003c\/h5\u003e\n\u003cp\u003eEnough capacity for ~20,000 gallon pools, with a typical 1 to 1.5 degree per hour rise on a 20,000 gallon pool in 75F ambient.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-feature-card\"\u003e\n\u003cdiv class=\"hwhp110-emoji\"\u003e⚡\u003c\/div\u003e\n\u003ch5\u003e5.7 Heating COP\u003c\/h5\u003e\n\u003cp\u003eYou get about \u003cstrong\u003e5.7 units of heat for every unit of electricity\u003c\/strong\u003e, which is roughly 5x more efficient than electric resistance heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-feature-card\"\u003e\n\u003cdiv class=\"hwhp110-emoji\"\u003e🧰\u003c\/div\u003e\n\u003ch5\u003e2 in Union Plumbing\u003c\/h5\u003e\n\u003cp\u003eStandard 2 inch threaded unions make swaps and winterizations straightforward for any pool tech.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-feature-card\"\u003e\n\u003cdiv class=\"hwhp110-emoji\"\u003e📏\u003c\/div\u003e\n\u003ch5\u003eCompact Square Footprint\u003c\/h5\u003e\n\u003cp\u003e30.5 in W x 33.6 in D cabinet with a 44 in height fits the same pad space as competing 100K class heat pumps.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-feature-card\"\u003e\n\u003cdiv class=\"hwhp110-emoji\"\u003e🛡️\u003c\/div\u003e\n\u003ch5\u003eTCP Cabinet Coating\u003c\/h5\u003e\n\u003cp\u003eNaval-grade Titanium Coating Protection resists salt air and pool chemistry, ideal for coastal and saltwater pool installs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-feature-card\"\u003e\n\u003cdiv class=\"hwhp110-emoji\"\u003e🌊\u003c\/div\u003e\n\u003ch5\u003eQuiet Single-Speed Fan\u003c\/h5\u003e\n\u003cp\u003eTop-discharge fan and MCHX coil move air efficiently, with sound levels low enough for backyards close to patios and neighbors.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \n  \u003cdiv class=\"hwhp110-warning\"\u003e\n    \u003ch4\u003eInstallation Notice\u003c\/h4\u003e\n    \u003cp\u003eThe W3HP21105T requires a dedicated \u003cstrong\u003e230V single-phase circuit with a 40 amp maximum breaker\u003c\/strong\u003e, wired per \u003cstrong\u003eNEC Article 680\u003c\/strong\u003e for pool equipment, with proper bonding to the equipotential grid. Maintain \u003cstrong\u003e12 in side and rear clearance and 72 in vertical clearance\u003c\/strong\u003e for airflow. Installation by a licensed electrician and pool professional is required to keep the Hayward warranty valid.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \n\n  \u003csection class=\"hwhp110-section\"\u003e\n    \u003ch2\u003eFull Specifications\u003c\/h2\u003e\n    \u003cdiv class=\"hwhp110-spec-grid\"\u003e\n      \u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eManufacturer\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eHayward\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eModel \/ MPN\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eW3HP21105T\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eSKU\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003ePST-W3HP21105T\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eUPC\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e0610377424530\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eProduct Type\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003ePool Heat Pump, Heat Only\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eSeries\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eHeatPro MCHX\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eHeating Capacity\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e110,000 BTU\/hr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eHeating COP\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e5.7\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eMinimum Operating Temperature\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e40 F ambient\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eHeat Exchanger\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eMicrochannel (MCHX)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eCabinet Coating\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eTitanium Coating Protection (TCP)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eVoltage\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e230V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003ePhase \/ Frequency\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eSingle Phase, 60 Hz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eMaximum Breaker\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e40 Amps\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003ePlumbing Connection\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e2 in Union\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eRefrigerant\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eR-410A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eCompressor\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eSingle-Speed Rotary\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eDimensions (H x W x D)\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e44 in x 30.5 in x 33.6 in\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eProduct Weight\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e230 lbs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eShipping Weight\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e250 lbs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eClearance, Side and Rear\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e12 in\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eClearance, Vertical\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e72 in\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003ePool Type\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003eInground\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hwhp110-spec-row\"\u003e\n\u003cspan class=\"hwhp110-spec-key\"\u003eWarranty\u003c\/span\u003e\u003cspan class=\"hwhp110-spec-val\"\u003e5-Year Parts (Hayward HeatPro)\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"hwhp110-section\"\u003e\n    \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n    \n    \u003cdiv class=\"hwhp110-faq-card\"\u003e\n      \u003ch4\u003eWhat size pool does the W3HP21105T heat?\u003c\/h4\u003e\n      \u003cp\u003eAt 110,000 BTU\/hr, this heat pump comfortably maintains pools up to about \u003cstrong\u003e20,000 gallons\u003c\/strong\u003e in most climates. For larger pools or aggressive temperature targets, step up to the \u003cstrong\u003e140K BTU\u003c\/strong\u003e HP21404T or \u003cstrong\u003e140K square-platform\u003c\/strong\u003e model. Pool cover use can effectively double the gallons this unit holds at temperature.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"hwhp110-faq-card\"\u003e\n      \u003ch4\u003eWhat is the difference between the W3HP21105T and the HP21105T?\u003c\/h4\u003e\n      \u003cp\u003eFunctionally they are the same unit. The \u003cstrong\u003eW3 prefix\u003c\/strong\u003e identifies the model as sold through Hayward's authorized residential distribution channel, which is the channel that carries the full \u003cstrong\u003ewarranty\u003c\/strong\u003e. The HP21105T (without W3) is the open-line or pro-only version sold through wholesale-only channels.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"hwhp110-faq-card\"\u003e\n      \u003ch4\u003eWhat is the difference between Heat Only and Heat \/ Chill models?\u003c\/h4\u003e\n      \u003cp\u003eThe W3HP21105T is \u003cstrong\u003eheat only\u003c\/strong\u003e, designed to raise pool temperature. The \u003cstrong\u003eHP31105T Heat\/Chill\u003c\/strong\u003e version reverses the cycle to also cool the pool a few degrees in extreme summer heat. If you only need warming, the heat-only model costs less and uses fewer internal components.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"hwhp110-faq-card\"\u003e\n      \u003ch4\u003eCan I install this heat pump myself?\u003c\/h4\u003e\n      \u003cp\u003eMost local codes require a \u003cstrong\u003elicensed electrician\u003c\/strong\u003e for the 230V single-phase 40A circuit (NEC Article 680 bonding rules apply). The 2 in plumbing connections are straightforward for a handy owner or pool pro. We strongly recommend a professional install to keep the Hayward 5-year parts warranty valid.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"hwhp110-faq-card\"\u003e\n      \u003ch4\u003eHow fast will it heat my pool?\u003c\/h4\u003e\n      \u003cp\u003eA typical 20,000 gallon pool gains \u003cstrong\u003e1 to 1.5 F per hour\u003c\/strong\u003e with this unit at 75F ambient air. Cooler outside air slows the rate. A \u003cstrong\u003esolar or thermal pool cover\u003c\/strong\u003e at night is the single biggest improvement you can make, often cutting runtime in half.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"hwhp110-faq-card\"\u003e\n      \u003ch4\u003eDoes it work in cold weather?\u003c\/h4\u003e\n      \u003cp\u003eThe HeatPro is rated for operation down to \u003cstrong\u003e40F ambient air\u003c\/strong\u003e. Below that the patented defrost algorithm protects the coil but capacity drops sharply. For climates with winters below freezing, the unit must be \u003cstrong\u003ewinterized and the water side drained\u003c\/strong\u003e at the end of swim season.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n    \u003cdiv class=\"hwhp110-faq-card\"\u003e\n      \u003ch4\u003eHow much will it cost to run?\u003c\/h4\u003e\n      \u003cp\u003eWith a \u003cstrong\u003e5.7 COP\u003c\/strong\u003e, the W3HP21105T uses roughly \u003cstrong\u003e4-5 kW\u003c\/strong\u003e when running. At an average US electric rate, that is a few dollars per hour of runtime, dramatically less than a gas heater hitting the same temperature target. Pool covers and only heating when you are using the pool will keep monthly costs sane.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \n  \u003c\/section\u003e\n\n  \u003csection class=\"hwhp110-cta\"\u003e\n    \u003ch2\u003eOrder the Hayward W3HP21105T From PST\u003c\/h2\u003e\n    \u003cp\u003ePST Pool Supplies is an authorized Hayward dealer. Every HeatPro ships with the full \u003cstrong\u003e5-year Hayward parts warranty\u003c\/strong\u003e, backed by our in-house service team.\u003c\/p\u003e\n    \u003cdiv class=\"hwhp110-perks\"\u003e\n      \u003cspan class=\"hwhp110-perk\"\u003eFree Shipping\u003c\/span\u003e\u003cspan class=\"hwhp110-perk\"\u003e30-Day Returns\u003c\/span\u003e\u003cspan class=\"hwhp110-perk\"\u003e5-Year Hayward Parts Warranty\u003c\/span\u003e\u003cspan class=\"hwhp110-perk\"\u003eAuthorized Hayward Dealer\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e\n","brand":"Hayward","offers":[{"title":"Default Title","offer_id":44002162802753,"sku":"PST-W3HP21105T","price":5212.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/1623\/0209\/files\/PST-W3HP21105T.jpg?v=1780385370","url":"https:\/\/www.pstpoolsupplies.com\/products\/hayward-w3hp21105t-heatpro-110k-btu-heat-only-pool-heat-pump","provider":"PST Pool Supplies","version":"1.0","type":"link"}