{"product_id":"nti-trx-combi-boiler","title":"NTI TRX Series II Combi Boiler | Gas Heating \u0026 On-Demand Hot Water","description":"\u003ch2\u003eMade-in-Canada Combi Boiler: Home Heating and On-Demand Hot Water in One Wall-Hung Unit\u003c\/h2\u003e\n\u003cp\u003eTired of running out of hot water, or replacing both an old boiler and a water heater? The \u003cstrong\u003eNTI TRX Series II combi boiler\u003c\/strong\u003e heats your home \u003cstrong\u003eand\u003c\/strong\u003e supplies on-demand domestic hot water from a single \u003cstrong\u003ewall-hung, high-efficiency condensing gas boiler\u003c\/strong\u003e. No separate water heater or storage tank to buy, power or make room for.\u003c\/p\u003e\n\u003cp\u003eIt's home-grown: the TRX Series II is \u003cstrong\u003emade in Canada\u003c\/strong\u003e by NTI, which has built hydronic heating equipment in New Brunswick since the 1960s and is headquartered in \u003cstrong\u003eSaint John, NB\u003c\/strong\u003e. The combination boiler comes in \u003cstrong\u003e3 sizes\u003c\/strong\u003e, runs on \u003cstrong\u003enatural gas or propane\u003c\/strong\u003e, and works with in-floor radiant, baseboard, radiator and hydronic air handler heating.\u003c\/p\u003e\n\u003cp\u003eNot sure which size fits your home? \u003ca href=\"https:\/\/bphsales.ca\/pages\/contact-us\" title=\"Contact BPH Sales for combi boiler sizing help\"\u003eContact us\u003c\/a\u003e for a sizing recommendation.\u003c\/p\u003e\n\u003ch3\u003eKey features of the NTI TRX Series II combi boiler\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in Canada\u003c\/strong\u003e – built by NTI in New Brunswick, with technical support from Saint John, NB\u003c\/li\u003e\n\u003cli\u003eAvailable in \u003cstrong\u003e3 sizes\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003e106,000 BTU\/hr heating, 114,000 BTU\/hr hot water (\u003cem\u003eTRX110C\u003c\/em\u003e)\u003c\/li\u003e\n\u003cli\u003e120,000 BTU\/hr heating, 150,000 BTU\/hr hot water (\u003cem\u003eTRX150C\u003c\/em\u003e)\u003c\/li\u003e\n\u003cli\u003e197,000 BTU\/hr heating (\u003cem\u003eTRX199C\u003c\/em\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating and on-demand hot water\u003c\/strong\u003e in one unit, with a built-in hot water diverter valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-efficiency condensing combi boiler\u003c\/strong\u003e – 95% AFUE on all three sizes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModulating burner\u003c\/strong\u003e with up to 11:1 modulation, so it runs only as hard as needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXTRATECH® stainless steel heat exchanger\u003c\/strong\u003e with large-diameter tubing\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIntegrated ECM circulator pump\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNTI NET Wi-Fi\u003c\/strong\u003e – remote monitoring, error alerts and settings changes for you and your installer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural gas or propane\u003c\/strong\u003e – propane conversion kits are available for every model\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible venting\u003c\/strong\u003e – 2\" vent up to 100 ft or 3\" vent up to 150 ft\u003c\/li\u003e\n\u003cli\u003eASME \"H\" stamped and certified to CSA 4.9\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSafety warning:\u003c\/strong\u003e this is a gas appliance, and as such, requires certified, professional installation. Failure to properly install \u0026amp; commission a gas appliance can lead to serious damage, injury, or death.\u003c\/p\u003e\n\u003ch3\u003eHow much hot water does an NTI TRX combi boiler make?\u003c\/h3\u003e\n\u003cp\u003eHot water flow depends on how much the boiler has to heat the incoming water. In a Canadian winter, incoming water is cold, so use the 77°F rise column; in summer, the 35–45°F columns are closer.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003e35°F rise\u003c\/th\u003e\n\u003cth\u003e45°F rise\u003c\/th\u003e\n\u003cth\u003e77°F rise\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRX110C\u003c\/td\u003e\n\u003ctd\u003e5.9 GPM\u003c\/td\u003e\n\u003ctd\u003e4.6 GPM\u003c\/td\u003e\n\u003ctd\u003e2.7 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRX150C\u003c\/td\u003e\n\u003ctd\u003e7.8 GPM\u003c\/td\u003e\n\u003ctd\u003e6.1 GPM\u003c\/td\u003e\n\u003ctd\u003e3.5 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRX199C\u003c\/td\u003e\n\u003ctd\u003e10.5 GPM\u003c\/td\u003e\n\u003ctd\u003e8.2 GPM\u003c\/td\u003e\n\u003ctd\u003e4.8 GPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAs a rough guide, a standard shower uses about 2 GPM. A home that runs two showers at once in winter will generally need the TRX150C or TRX199C.\u003c\/p\u003e\n\u003ch3\u003eNTI TRX combi boiler specifications\u003c\/h3\u003e\n\u003cp\u003eOn a combi boiler, the model number follows the \u003cstrong\u003ehot water\u003c\/strong\u003e input, not the heating input. The TRX150C heats like the 120,000 BTU\/hr TRX120 and adds a 150,000 BTU\/hr hot water side. Size the heating side to your home's heat loss.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eHeating input (BTU\/hr)\u003c\/th\u003e\n\u003cth\u003eHot water input (BTU\/hr)\u003c\/th\u003e\n\u003cth\u003eNet AHRI output, water (BTU\/hr)\u003c\/th\u003e\n\u003cth\u003eAFUE\u003c\/th\u003e\n\u003cth\u003eShipping weight\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRX110C\u003c\/td\u003e\n\u003ctd\u003e11,200–106,000\u003c\/td\u003e\n\u003ctd\u003e11,200–114,000\u003c\/td\u003e\n\u003ctd\u003e85,000\u003c\/td\u003e\n\u003ctd\u003e95%\u003c\/td\u003e\n\u003ctd\u003e83 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRX150C\u003c\/td\u003e\n\u003ctd\u003e13,200–120,000\u003c\/td\u003e\n\u003ctd\u003e13,200–150,000\u003c\/td\u003e\n\u003ctd\u003e97,000\u003c\/td\u003e\n\u003ctd\u003e95%\u003c\/td\u003e\n\u003ctd\u003e84 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTRX199C\u003c\/td\u003e\n\u003ctd\u003e19,700–197,000\u003c\/td\u003e\n\u003ctd\u003e–\u003c\/td\u003e\n\u003ctd\u003e160,000\u003c\/td\u003e\n\u003ctd\u003e95%\u003c\/td\u003e\n\u003ctd\u003e135 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eHot water connections: 3\/4\" sweat \/ 3\/4\" male NPT. Gas connection: 3\/4\" male NPT. Gas supply: natural gas 3.5–10.5\" W.C.; propane 8–13\" W.C.\u003c\/p\u003e\n\u003ch3\u003eCombination boiler vs. boiler and water heater\u003c\/h3\u003e\n\u003cp\u003eA \u003cstrong\u003ecombination boiler\u003c\/strong\u003e saves space, removes standby losses from a storage tank, and gives endless hot water at its rated flow. A \u003cstrong\u003eheat-only boiler with an indirect water heater\u003c\/strong\u003e is the better fit for homes with several bathrooms in use at once, or a large soaker tub. Compare the \u003ca href=\"https:\/\/bphsales.ca\/products\/nti-trx-gas-boiler\" title=\"NTI TRX Series II heat-only gas boiler\"\u003eNTI TRX Series II heat-only boiler\u003c\/a\u003e, or browse \u003ca href=\"https:\/\/bphsales.ca\/collections\/quality-residential-combi-boilers\" title=\"Combi boilers at BPH Sales\"\u003eall combi boilers\u003c\/a\u003e and \u003ca href=\"https:\/\/bphsales.ca\/collections\/high-quality-residential-boilers\" title=\"Residential gas and electric boilers at BPH Sales\"\u003egas boilers\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eNeed a complete system? Our \u003ca href=\"https:\/\/bphsales.ca\/products\/custom-boilers-and-boiler-boards\" title=\"Custom pre-built boiler boards and boiler systems from BPH Sales\"\u003ecustom pre-built boiler boards\u003c\/a\u003e come piped and wired for multi-zone heating.\u003c\/p\u003e\n\u003ch3\u003eNTI TRX combi boiler FAQ\u003c\/h3\u003e\n\u003ch4\u003eWhere are NTI combi boilers made?\u003c\/h4\u003e\n\u003cp\u003eIn Canada. The TRX Series II is manufactured in Canada by NTI, which has designed and built boilers in New Brunswick since the 1960s and is headquartered in Saint John, NB. NTI has been part of the Ariston Group since 2016.\u003c\/p\u003e\n\u003ch4\u003eHow many showers can an NTI combi boiler run at once?\u003c\/h4\u003e\n\u003cp\u003eIn winter (77°F rise), the TRX110C supports about one shower, the TRX150C one shower plus a tap, and the TRX199C about two showers at roughly 2 GPM each. In summer, flow rates are higher.\u003c\/p\u003e\n\u003ch4\u003eCan the NTI TRX combi boiler run on propane?\u003c\/h4\u003e\n\u003cp\u003eYes. Every TRX Series II model ships for natural gas and can be converted to propane with NTI's propane conversion kit. The conversion must be done by a licensed gas fitter.\u003c\/p\u003e\n\u003ch4\u003eCan one combi boiler run in-floor heat and hot water?\u003c\/h4\u003e\n\u003cp\u003eYes. The TRX combi supplies space heating to in-floor radiant, baseboard or radiators, and gives priority to domestic hot water when a tap opens.\u003c\/p\u003e\n\u003ch4\u003eWhat does an NTI combi boiler cost in Canada?\u003c\/h4\u003e\n\u003cp\u003eTRX Series II combi boilers start at $4,448 CAD for the TRX110C, with $95 terminal shipping across Canada. Installation, venting and controls are extra.\u003c\/p\u003e\n\u003ch3\u003eMore information about the NTI TRX Series II\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.ntiboilers.com\/products\/trx-series-2\" title=\"NTI TRX Series II manufacturer product page\" rel=\"noopener\" target=\"_blank\"\u003eNTI TRX Series II product page\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.ntiboilers.com\/content\/dam\/nti\/products\/trx-series-ii\/downloads\/trx-series-ii-submittal.pdf\" title=\"NTI TRX Series II specification and submittal sheet\" rel=\"noopener\" target=\"_blank\"\u003eNTI TRX Series II submittal sheet (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"https:\/\/bphsales.ca\/collections\/nti-boilers-and-water-heaters\" title=\"NTI boilers at BPH Sales\"\u003eNTI boilers\u003c\/a\u003e, or shop more \u003ca href=\"https:\/\/bphsales.ca\/collections\/made-in-canada-collection\" title=\"Canadian-made HVAC and hydronic equipment at BPH Sales\"\u003eCanadian-made heating equipment\u003c\/a\u003e.\u003c\/p\u003e","brand":"NTI","offers":[{"title":"TRX110C (106,000 BTU\/hr heat | 2.7 GPM hot water)","offer_id":68226628452564,"sku":"TRX110C","price":4448.0,"currency_code":"CAD","in_stock":true},{"title":"TRX150C (120,000 BTU\/hr heat | 3.5 GPM hot water)","offer_id":68226628485332,"sku":"TRX150C","price":4719.0,"currency_code":"CAD","in_stock":true},{"title":"TRX199C (197,000 BTU\/hr heat | 4.8 GPM hot water)","offer_id":68226628518100,"sku":"TRX199C","price":5746.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0482\/6762\/4605\/files\/nti-trx-series-ii-gas-combi-boiler-front.jpg?v=1793310885","url":"https:\/\/bphsales.ca\/products\/nti-trx-combi-boiler","provider":"BPH Sales","version":"1.0","type":"link"}