{"product_id":"pentair-sta-rite-max-e-therm-gas-pool-heater","title":"Pentair Sta-Rite Max-E-Therm High-Performance Gas Pool Heater","description":"\u003cp\u003e\u003cstrong\u003eA compact, high-efficiency gas pool and spa heater featuring a rustproof Dura-Glas composite housing and intuitive digital controls.\u003c\/strong\u003e Engineered by Pentair, the Sta-Rite Max-E-Therm series combines fast heat-up performance with rugged weatherproof construction built to handle demanding Canadian outdoor environments. Available in 200,000, 333,000, and 400,000 BTU\/h capacities for natural gas or propane installations, the Max-E-Therm delivers 84% thermal efficiency, a premix combustion blower system, and hot-surface ignition.\u003c\/p\u003e\n\u003ch2\u003eKey features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRustproof Dura-Glas composite housing\u003c\/strong\u003e — sleek, rounded composite exterior eliminates metal corrosion, peeling paint, and rust stains on the pool equipment pad.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremix combustion with induced draft blower\u003c\/strong\u003e — completely enclosed air\/gas mixing system provides stable flame control and clean combustion even under variable outdoor wind conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot-surface ignition (HSI)\u003c\/strong\u003e — direct electronic silicon carbide igniter eliminates standing pilot lights, reducing standby fuel consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision digital dual-temperature display\u003c\/strong\u003e — top-mounted rotatable control panel features dual digital thermostats for seamless pool and spa temperature switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart automation ready\u003c\/strong\u003e — integrates directly with Pentair IntelliCenter, IntelliTouch, and EasyTouch automation systems via standard two-wire communication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-vent indoor capability\u003c\/strong\u003e — certified for outdoor installation as well as indoor mechanical room ventilation using certified Category III or IV stainless venting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSizing guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eModel\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eRated input\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eTypical pool surface area\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eTypical pool volume\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSR200\u003c\/th\u003e\n\u003ctd\u003e200,000 BTU\/h\u003c\/td\u003e\n\u003ctd\u003eUp to 450 sq ft\u003c\/td\u003e\n\u003ctd\u003eUp to 55,000 L (14,500 US gal)\u003c\/td\u003e\n\u003ctd\u003eStandalone spas and smaller in-ground pools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSR333\u003c\/th\u003e\n\u003ctd\u003e333,000 BTU\/h\u003c\/td\u003e\n\u003ctd\u003eUp to 750 sq ft\u003c\/td\u003e\n\u003ctd\u003eUp to 95,000 L (25,000 US gal)\u003c\/td\u003e\n\u003ctd\u003eMid-size in-ground pools and rapid spa heating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSR400\u003c\/th\u003e\n\u003ctd\u003e400,000 BTU\/h\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 sq ft\u003c\/td\u003e\n\u003ctd\u003eUp to 130,000 L (34,000 US gal)\u003c\/td\u003e\n\u003ctd\u003eLarge residential pools and extended shoulder seasons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ch3\u003ePerformance\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSR200NA \/ LP\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSR333NA \/ LP\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSR400NA \/ LP\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInput capacity\u003c\/th\u003e\n\u003ctd\u003e200,000 BTU\/h (58.6 kW)\u003c\/td\u003e\n\u003ctd\u003e333,000 BTU\/h (97.6 kW)\u003c\/td\u003e\n\u003ctd\u003e400,000 BTU\/h (117.2 kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eThermal efficiency\u003c\/th\u003e\n\u003ctd\u003e84.0%\u003c\/td\u003e\n\u003ctd\u003e84.0%\u003c\/td\u003e\n\u003ctd\u003e84.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIgnition type\u003c\/th\u003e\n\u003ctd\u003eDirect hot-surface ignition (HSI)\u003c\/td\u003e\n\u003ctd\u003eDirect hot-surface ignition (HSI)\u003c\/td\u003e\n\u003ctd\u003eDirect hot-surface ignition (HSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBlower system\u003c\/th\u003e\n\u003ctd\u003eInduced draft combustion blower\u003c\/td\u003e\n\u003ctd\u003eInduced draft combustion blower\u003c\/td\u003e\n\u003ctd\u003eInduced draft combustion blower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeat exchanger\u003c\/th\u003e\n\u003ctd\u003eFin-tube copper with bronze headers\u003c\/td\u003e\n\u003ctd\u003eFin-tube copper with bronze headers\u003c\/td\u003e\n\u003ctd\u003eFin-tube copper with bronze headers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEmissions profile\u003c\/th\u003e\n\u003ctd\u003eLow-NOx certified (\u0026lt;40 ng\/J)\u003c\/td\u003e\n\u003ctd\u003eLow-NOx certified (\u0026lt;40 ng\/J)\u003c\/td\u003e\n\u003ctd\u003eLow-NOx certified (\u0026lt;40 ng\/J)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eHydraulic \u0026amp; plumbing\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePlumbing connection size\u003c\/th\u003e\n\u003ctd\u003e2 in. CPVC slip unions included (reversible header for left or right piping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMinimum water flow rate\u003c\/th\u003e\n\u003ctd\u003e40 US gpm (151 L\/min) across all sizes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum water flow rate\u003c\/th\u003e\n\u003ctd\u003e120 US gpm (454 L\/min); external manual bypass required above 120 gpm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInternal bypass valve\u003c\/th\u003e\n\u003ctd\u003eAutomatic built-in thermal regulating bypass valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum working pressure\u003c\/th\u003e\n\u003ctd\u003e50 psi (345 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFuel supply \u0026amp; electrical\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eNatural gas models (NA)\u003c\/th\u003e\n\u003cth scope=\"col\"\u003ePropane models (LP)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFuel inlet connection\u003c\/th\u003e\n\u003ctd\u003e3\/4 in. NPT female\u003c\/td\u003e\n\u003ctd\u003e3\/4 in. NPT female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eGas supply pressure (inlet min \/ max)\u003c\/th\u003e\n\u003ctd\u003e4.0 in. w.c. \/ 14.0 in. w.c.\u003c\/td\u003e\n\u003ctd\u003e10.0 in. w.c. \/ 14.0 in. w.c.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eManifold operating pressure\u003c\/th\u003e\n\u003ctd\u003eNormal: 3.5 in. w.c.\u003c\/td\u003e\n\u003ctd\u003eNormal: 10.0 in. w.c.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eElectrical supply\u003c\/th\u003e\n\u003ctd\u003e115 V AC or 230 V AC, 60 Hz, single phase (convertible field plug)\u003c\/td\u003e\n\u003ctd\u003e115 V AC or 230 V AC, 60 Hz, single phase (convertible field plug)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating current\u003c\/th\u003e\n\u003ctd\u003e5.5 A at 115 V AC \/ 3.0 A at 230 V AC\u003c\/td\u003e\n\u003ctd\u003e5.5 A at 115 V AC \/ 3.0 A at 230 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCabinet dimensions \u0026amp; weight\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eDimension\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSR200\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSR333\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSR400\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e30.18 in. (767 mm)\u003c\/td\u003e\n\u003ctd\u003e30.18 in. (767 mm)\u003c\/td\u003e\n\u003ctd\u003e30.18 in. (767 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWidth (cabinet diameter)\u003c\/th\u003e\n\u003ctd\u003e28.14 in. (715 mm)\u003c\/td\u003e\n\u003ctd\u003e28.14 in. (715 mm)\u003c\/td\u003e\n\u003ctd\u003e28.14 in. (715 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDepth (front to back)\u003c\/th\u003e\n\u003ctd\u003e33.00 in. (838 mm)\u003c\/td\u003e\n\u003ctd\u003e33.00 in. (838 mm)\u003c\/td\u003e\n\u003ctd\u003e33.00 in. (838 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eShipping weight\u003c\/th\u003e\n\u003ctd\u003e128 lb (58.1 kg)\u003c\/td\u003e\n\u003ctd\u003e138 lb (62.6 kg)\u003c\/td\u003e\n\u003ctd\u003e149 lb (67.6 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eBefore you buy\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGas lines, meter regulators, and venting must be sized and installed in compliance with CSA B149.1 (Natural Gas and Propane Installation Code) and local utility standards by a licensed gas technician.\u003c\/li\u003e\n\u003cli\u003eElectrical connections require a dedicated 15 A 120 V or 240 V branch circuit compliant with the Canadian Electrical Code (CSA C22.1). Ensure proper bonding to the pool bonding grid with a minimum 6 AWG copper conductor.\u003c\/li\u003e\n\u003cli\u003eMaintain minimum clearances from combustible construction: 6 in. on top, 6 in. on rear, 6 in. on right side, and 12 in. on water connection side. Provide 36 in. front clearance for maintenance access.\u003c\/li\u003e\n\u003cli\u003eMaintain balanced water chemistry (pH 7.4–7.6, total alkalinity 80–120 ppm, calcium hardness 200–400 ppm) to ensure long heat exchanger operating life.\u003c\/li\u003e\n\u003cli\u003eFor winter freeze protection in cold climates, drain all water by opening the manifold drain plug and clearing connecting piping with compressed air.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHave questions about gas line sizing or selecting between 200K, 333K, or 400K BTU\/h? Request a product quote or see the manufacturer documents below.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003cdetails class=\"details\"\u003e\u003csummary\u003e\u003cstrong\u003eDoes the Max-E-Therm feature a reversible water header?\u003c\/strong\u003e\u003c\/summary\u003e\u003cdiv class=\"details-content\"\u003e\u003cp\u003eYes. The plumbing connections can be reversed from the factory right-hand side to left-hand side in the field to match existing equipment pad pipe runs.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"details\"\u003e\u003csummary\u003e\u003cstrong\u003eWhat is the natural gas supply pressure requirement?\u003c\/strong\u003e\u003c\/summary\u003e\u003cdiv class=\"details-content\"\u003e\u003cp\u003eSupply gas pressure must measure between 4.0 inches W.C. minimum and 14.0 inches W.C. maximum during firing load. A licensed gas technician must verify line sizing under CSA B149.1.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"details\"\u003e\u003csummary\u003e\u003cstrong\u003eIs the Max-E-Therm certified as Low-NOx?\u003c\/strong\u003e\u003c\/summary\u003e\u003cdiv class=\"details-content\"\u003e\u003cp\u003eYes. The unit produces low nitrogen oxide emissions under 40 ng\/J, meeting all Canadian environmental air quality standards.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"details\"\u003e\u003csummary\u003e\u003cstrong\u003eCan the Max-E-Therm connect to automated pool controllers?\u003c\/strong\u003e\u003c\/summary\u003e\u003cdiv class=\"details-content\"\u003e\u003cp\u003eYes. The heater supports two-wire connection to Pentair IntelliCenter, EasyTouch, and compatible digital pool automation systems.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"details\"\u003e\u003csummary\u003e\u003cstrong\u003eWhat clearance is needed around the circular housing?\u003c\/strong\u003e\u003c\/summary\u003e\u003cdiv class=\"details-content\"\u003e\u003cp\u003eAllow 6 inches (150 mm) of clearance on non-plumbing sides, 12 inches (300 mm) on the plumbing side, 18 inches (450 mm) for control panel access, and unrestricted overhead clearance.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"details\"\u003e\u003csummary\u003e\u003cstrong\u003eHow do I winterize the Max-E-Therm for sub-zero temperatures?\u003c\/strong\u003e\u003c\/summary\u003e\u003cdiv class=\"details-content\"\u003e\u003cp\u003eTurn off electrical power and shut off the gas supply. Remove the water header drain plug, disconnect the PVC union couplings, blow out any standing water inside the exchanger with low-pressure air, and fit a protective cover.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/max-e-therm\/brochure\/max-e-therm-heaters-for-pools-and-spas-en.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSpecification brochure — Sta-Rite Max-E-Therm (English) (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/max-e-therm\/manuals\/max-e-therm-manual-english.pdf\" target=\"_blank\" rel=\"noopener\"\u003eInstallation and user's guide — Sta-Rite Max-E-Therm (English) (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/max-e-therm\/manuals\/Max-E-Therm_Pool_and_Spa_Heater_Users_Guide_French.pdf\" target=\"_blank\" rel=\"noopener\"\u003eGuide d'installation et d'utilisation — Sta-Rite Max-E-Therm (French) (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/max-e-therm\/manuals\/starite-maxetherm-heater-submittal-data-sheet.pdf\" target=\"_blank\" rel=\"noopener\"\u003eEngineering submittal data sheet — Sta-Rite Max-E-Therm (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003csmall\u003eSpecifications sourced from Pentair Sta-Rite Max-E-Therm Installation and User's Guide (P\/N 473435 Rev D), brochure (P\/N STA-MAXBR-EN), and engineering submittal data. Specifications are subject to change by the manufacturer. \u003ca href=\"https:\/\/www.pentair.com\/content\/dam\/extranet\/nam\/pentair-pool\/residential\/heaters\/max-e-therm\/manuals\/max-e-therm-manual-english.pdf\" target=\"_blank\" rel=\"noopener\"\u003eView the Pentair Sta-Rite Max-E-Therm manual (PDF)\u003c\/a\u003e.\u003c\/small\u003e\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"200K BTU\/h \/ Natural gas","offer_id":53973699690790,"sku":"SR200NA","price":4150.0,"currency_code":"CAD","in_stock":true},{"title":"200K BTU\/h \/ Propane","offer_id":53973699723558,"sku":"SR200LP","price":4150.0,"currency_code":"CAD","in_stock":true},{"title":"333K BTU\/h \/ Natural gas","offer_id":53973699756326,"sku":"SR333NA","price":4650.0,"currency_code":"CAD","in_stock":true},{"title":"333K BTU\/h \/ Propane","offer_id":53973699789094,"sku":"SR333LP","price":4650.0,"currency_code":"CAD","in_stock":true},{"title":"400K BTU\/h \/ Natural gas","offer_id":53973699821862,"sku":"SR400NA","price":5150.0,"currency_code":"CAD","in_stock":true},{"title":"400K BTU\/h \/ Propane","offer_id":53973699854630,"sku":"SR400LP","price":5150.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1039\/8521\/7830\/files\/pentair-sta-rite-max-e-therm-gas-pool-heater.png?v=1790689747","url":"https:\/\/avlshop.ca\/products\/pentair-sta-rite-max-e-therm-gas-pool-heater","provider":"AVL Shop","version":"1.0","type":"link"}