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NTI Boilers & Combi Boilers

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AIC Vertical Heat Exchanger

ductless.ca Inc. is pleased to sell and install state-of-the-art NTI gas boilers and combi boilers in Toronto and Georgian Bay. NTI boilers are developed using cutting edge computer assisted design, in accordance with Canadian Standards Association (CSA) guidelines and ASME industry Codes. Acknowledged as a leader in research and product development, NTI is headquartered out of Saint John, New Brunswick and is a pioneer in developing the most advanced and efficient home heating equipment. With NTI, you’re buying a quality Canadian product.

ductless.ca Inc. is pleased to offer sales, installation, and service for NTI’s full range of residential and commercial heating products.

Why choose ductless.ca Inc. to install your NTI boiler?

ductless Truckductless.ca Inc. is your go-to provider for professional and reliable installations of NTI boilers. Our team of certified technicians have years of experience and are dedicated to ensuring that your boiler is installed safely and efficiently. Our expertise in hydronic heating technology ensures that we will properly size your Laars boiler for your specific needs, maximizing your heating efficiency and reducing your energy costs. Our commitment to quality, safety, and customer satisfaction means that you can trust us to provide the best service possible. We offer a no obligation in-home estimates and a comprehensive 10-year factory heat exchanger, 5-year factory parts and 2-year labour warranties. Choosing ductless.ca Inc. for your boiler in the Toronto, GTA and Georgian Bay area is the smart choice.

NTI Boilers We Proudly Offer

NTI TFTN Series Boilers

The NTI TFTN Series condensing gas boilers are the latest evolution of the fire tube boilers and are built from the TFT Series boilers. The TFTN Series features built-in Wi-Fi and a new 7″ touchscreen for unparallel functionality. Rated inputs from 8,500 to 850,000 Btu/h (2.5 to 249.1 kW). Available in wall mounted from 85 to 399 Btu/h and floor mounted from 500 to 850 Btu/h.

Features at a glance:

  • Built-in Wi-Fi for remote monitoring and diagnostics,
  • 7″ touchscreen with EZ setup wizard,
  • Featuring an AIC® vertical down-fired stainless steel tube heat exchanger,
  • Up to a 10:1 turn-down modulation radio,
  • Up to 98% AFUE,
  • Easy service access,
  • Built-in zone control with up to 3 heating zones plus DHW (Expandable to six heating zones using the optional N-Link Zone Expansion Module,
  • Quiet sealed cabinet design,
  • Warranty:
    Heat Exchanger: 15 Years
    Parts: 5 Years
    Labour: 2 Years

External Link: NTI TFTN Series Boilers

NTI 7" LCD Screen
ModelTFTN085TFTN110TFTN150TFTN199TFTN285TFTN340TFTN399
Rated CSA Input
(Min to Max) (MBH)
8.5 to 8511 to 11015 to 15019.9 to 19928.5 to 28539.9 to 34039.9 to 399
DOE Heating Capacity
(MBH)
79101138184263324380
Net AHRI Rating
(MBH)
6988120160229282330
AFUE96%95%95.4%
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoNo  No No
FuelNatural Gas, Liquid Propane Gas
ModelTFTN500TFTN600TFTN725TFTN850
Rated CSA Input
(Min to Max) (MBH)
50 to 50060 to 60072.5 to 72585 to 850
DOE Heating Capacity
(MBH)
489585705825
Net AHRI Rating
(MBH)
425509613717
AFUE98%97.8%97.7%97.6%
ENERGY STAR® CertifiedNoNoNoNo
FuelNatural Gas, Liquid Propane Gas

NTI FTVN Series Boilers & Combi Boilers

The NTI FTVN Series condensing gas boilers are the next evolution of the fire tube boilers. Equipped with down-fired vertical tube heat exchanger for maximum efficiency. Available in both space heating and combi for domestic hot water production. Rated inputs from 8,500 to 199,000 Btu/h (2.5 to 58.3 kW).

Features at a glance:

  • Featuring an AIC® vertical down-fired stainless steel tube heat exchanger,
  • Up to a 10:1 turn-down modulation radio,
  • Up to 96% AFUE,
  • NTI NET Wi-Fi onboard for 24/7 remote monitoring and control,
  • Integrated ECM pump and DHW 3-way diverter valve for easy in-direct hot water tank integration,
  • Easy service access,
  • Cascade up to 8 boilers,
  • Quiet sealed cabinet design,
  • Warranty:
    Heat Exchanger: 15 Years
    Parts: 5 Years
    Labour: 2 Years

External Link: NTI FTVN Series Boilers

NTI FTVN Boiler Inside View
NTI FTVN Boiler Inside View
ModelFTVN085FTVN110FTVN150FTVN199FTVN110C CombiFTVN150C CombiFTVN199C Combi
Rated CSA Input (Min to Max) (MBH)8.5 to 8511 to 11015 to 15019.9 to 19911 to 11015 to 15019.9 to 199
DOE Heating Capacity (MBH)79101138184101138184
Net AHRI Rating (MBH)698812016088120160
AFUE96%95%
Max DHW OutputN/A1022 l/h (4.5 GPM)1,385 l/h (6.1 GPM)1862 l/h (8.2 GPM)
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star Logo
FuelNatural Gas, Liquid Propane Gas

NTI TRX Series Boilers & Combi Boilers

The NTI TRX Series boilers are equipped with an innovative XTRATECH stainless steel heat exchanger. This wall-hung boiler is highly efficient, includes built-in Wi-Fi connectivity with native NTI remote connectivity support for easy service. The TRX series are available in both heat-only and combi versions.

Features at a glance:

  •  XTRATECH stainless steel large tube heat exchanger,
  • Up to a 11:1 turn-down ratio,
  • Up to 96% AFUE,
  • Onboard Wi-Fi for easy service,
  • Integrated ECM pump and DHW diverter valves,
  • Compatible with indirect hot water tanks with either a tank thermostat or sensor,
  • Cascade up to 8 boilers,
  • Quiet sealed cabinet design,
  • Optional 4-20mA or 0-10V input for remote operation,
  • Warranty:
    Heat Exchange: 15 Years
    Parts: 5 Years
    Labour: 2 Years
External Link: NTI TRX Series Boilers
Xtratech Heat Exchanger
Xtratech Heat Exchanger
NTI TRX Boiler Front Cover Open
Easy Service with the TRX Boiler
ModelTRX085TRX120TRX150TRX199TRX110C CombiTRX150C CombiTRX199C Combi
Rated CSA Input (Min to Max) (MBH)9.4 to 8513.2 to 12015 to 15019.7 to 19711.2 to 11413.2 to 15019.7 to 197
DOE Heating Capacity (MBH)7911113918498111184
Net AHRI Rating (MBH)69971211608597160
AFUE96%95%95.5%95%
Max DHW OutputN/A613 l/h (2.7 GPM)795 l/h (3.5 GPM)1090 l/h (4.8 GPM)
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star Logo
FuelNatural Gas, Liquid Propane Gas

NTI TFT Series Boilers

The NTI Trinity Fire Tube is NTI’s latest high efficiency condensing boiler or combi boiler. With up to a 95.0% AFUE efficiency rating, stainless steel design, nine models from 60,000 to 399,000 Btu/h (17.6 to 116.9 kW), multiple venting options (2″ venting and up to 150′ runs) and a user-friendly ifLEX touchscreen interface, the Fire Tube offers the ultimate combination of efficiency, quality, flexibility and innovation.

Features at a glance:

  • Down-fired Fire Tube (Tft): The Tft heat exchanger is ASME certified and uses an innovative down-fire combustor. The combustion tubes also have a dimpled design to optimize heat transfer and increases energy efficiency. The Fire Tube provide generous space for flue gas to pass and significantly reduce the need for cleaning due to the vertical configuration and self-cleaning operation when in condensation mode.
  • Stainless steel design: The wet leg combustion chamber enables up to 99% combustion efficiency. The ASME certified heat exchanger is constructed using type 439 stainless steel, making it extremely resistant to corrosion. The Fire Tube design allows water to flow freely around the heating surfaces of the boiler, which significantly reduces pressure drop.
  • Efficiencies and Performance: The Tft provides AFUE efficiencies up to 95.0%. NTI was first to develop the totally sealed combustion system, whereby air is not drawn from the surrounding cabinet space.
  • Flexibility: The design of the Tft offers more flexibility than any other boiler on the market, with vent runs up to 150′ (45 m), five vent termination options, 2″ venting on some models with plumbing and gas connections on top or bottom of the unit.
  • ifLEX Touchscreen: The optional 5.7″ colour touchscreen provides easy programming, control and quick setup with user-friendly screen displays and options.
  • ifLEX Interface: Provides easy navigation to all of the controllers parameters and set points. The backlit screen continuously displays system information to ensure safe and efficient operation.

Additional Features:

  • Certified internal low water cut-off with test button.
  • Fully-modulating combustion system with up to 5:1 turndown.
  • Condensate pump receptacle.
  • Wall-mount configuration with optional floor stand.
  • High-energy spark ignition (with external spark generator).
  • 15 year heat exchanger limited warranty.

Controller Features:

  • Ultimate controllability with advanced Sola Controller.
  • Detailed troubleshooting information (self-diagnostic display).
  • Internal “Lead-Lag” capability to connect up to 8 boilers simultaneously.
  • Outdoor reset temperature operation increases boiler and system efficiency.
  • Ability to control three separate temperature set points.
  • Comes standard with Modbus capability.
  • Domestic hot water and central heat modulation limiting.
  • Ability to control three separate pump loops.
  • 4-20 mA heat input for set point or modulation control.
  • Freeze protection parameters.
  • Warm weather shutdown.
  • Contacts for external limits and alarms.
  • Compatible with domestic hot water tank sensor.

External Link: NTI TFT Series Boilers

NTI Firetube Heat Exchanger
NTI Fire Tube Heat Exchanger
NTI iFLEX Controller
NTI iFLEX Touch Screen
ModelTFT60TFT85TFT110TFT154TFT201TFT285TFT340TFT399
Rated CSA Input (Min to Max) (MBH)17 to 6017 to 8521.6 to 10815.4 to 15420 to 20028.5 to 28539.9 to 34039.9 to 399
DOE Heating Capacity (MBH)567899141185263324380
Net AHRI Rating (MBH)486886122160228282330
AFUE95%95.5% (Thermal Eff.)
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoNo
FuelNatural Gas, Liquid Propane Gas

NTI Lx Series Boilers

The NTI Trinity Lx series provide luxury features and quality with superior efficiencies. Available as either boilers or hot water heaters. With nine sizes to choose from 150,000 to 800,000 Btu/h (44.0 to 234.5 kW) the NTI Trinity Lx series boilers will provide for all of your larger requirements.

Features at a glance:

  • Colour 5.7″ touchscreen display with advanced but easy to use menus.
  • Patented 316L stainless heat exchanger with efficiencies of up to 98% steady state and 93.7% AFUE.
  • Industry leading modulation rates.
  • High-quality construction with clear coat finish.
  • Both vents conveniently located on top of cabinet.
  • Alarm contacts.
  • Innovative floor or wall-mount configuration provides exceptional access to all components.
  • Factory-installed condensate trap with no moving parts.
  • Spark ignition with dual electrodes using a high-output transformer for successful ignitions every time.
  • Removable door and hinged display panel for ultimate access and serviceability.
  • No clearance required on the back, bottom or right side.
  • Three configuration pump outputs.
  • When used as a instantaneous water heater the Trinity Lx provides a tremendous amount of endless hot water with one of the best recovery rates in the industry (additional equipment is required such as a storage tank, aquastat, bronze pump and flow switch).
NTI Lx Series Boiler with Open Cover
NTI Lx Series Boilers Inside View
ModelLX150LX200LX300LX400LX500LX600LX800
Rated CSA Input (Min to Max) (MBH)25 to 15025 to 19955 to 27575 to 399100 to 500120 to 600160 to 800
DOE Heating Capacity (MBH)136181251375470564752
Net AHRI Rating (MBH)118157218326409490654
AFUE93.5%93.7%94%
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoNo
FuelNatural Gas, Liquid Propane Gas

NTI Vmax Series Boilers & Combi Boilers

Series discontinued. Limited availability in 2023.

The NTI Vmax Series boilers offer vertical fire tube heat exchangers, an integrated primary loop pump and dedicated indirect hot water tank connections. Available in Vmax (space-heating) and Vmax Plus (space-heating and DHW) versions. If you’re looking for a boiler with easy installation, service and maintenance, the Vmax series is for you. Many venting configurations and options are available along with an easy to use interface.

Features at a glance:

  • Down-firing stainless steel heat exchanger,
  • The Vmax Plus series includes a built-in 16 gallon indirect water heater,
  • Up to 10:1 turn down ratio,
  • Easy programmable display,
  • Built-in primary loop pump with circulator,
  • Dedicated connections for an indirect DHW hot water tank,
  • 120 VAC outlet for condensate pump,
  • Cascade up to 16 Vmax boilers,
  • Easy service,
  • Warranty:
    Heat Exchanger: Lifetime
    Parts: 5 Years
    Labour: 2 Years

External Link: NTI Vmax Series

NTI Vmax Series Boiler with front cover open
NTI Vmax Boiler Inside View
ModelVM110VM153VM110 Plus CombiVM153 Plus Combi
Rated CSA Input (Min to Max) (MBH)13.8 to 11015.4 to 15413.8 to 11015.4 to 154
DOE Heating Capacity (MBH)101141101141
Net AHRI Rating (MBH)8812288122
AFUE95%
Max DHW OutputN/A590 l/h (2.6 GPM)817 l/h (3.6 GPM)
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star Logo
FuelNatural Gas, Liquid Propane Gas

NTI FTV Series Boilers & Combi Boilers

Series discontinued. Limited availability in 2023.

The NTI FTV Series is a reliable and affordable wall-hung boiler with a down-fired stainless steel fire tube heat exchanger. Equipped with a programmable display and easy access for maintenance and installation. The FTV Series is available in both space-heating only and combi versions. The combi version is equipped with a primary loop pump for easy installation.

Features at a glance:

  • Down-fired vertical fire tube stainless steel heat exchanger,
  • Available in both space-heating and combi versions,
  • Highly efficient with an AFUE of 95%,
  • Outdoor reset sensor included,
  • Universal test connections with embedded test port,
  • Low loss headed included in the combi versions,
  • High energy spark ignition,
  • Cascade up to 16 FTV Series boilers,
  • Easy to program display,
  • Warranty:
    Heat Exchanger: Lifetime
    Parts: 5 Years
    Labour: 2 Years
External Link: NTI FTV Series
NTI FTV Series with open front
NTI FTV Boiler Inside View
ModelFTV110FTV150FTV190FTV110C CombiFTV150C CombiFTV190C Combi
Rated CSA Input (Min to Max) (MBH)11 to 11015 to 15019 to 19011 to 11015 to 15019 to 190
DOE Heating Capacity (MBH)101138176101138176
Net AHRI Rating (MBH)8812015388120153
AFUE95%
Max DHW OutputN/A613 l/h (2.7 GPM)818 l/h (3.6 GPM)1022 l/h (4.5 GPM)
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star Logo
FuelNatural Gas, Liquid Propane Gas

NTI Tx Series Boilers & Combi Boilers

Series discontinued. Limited availability in 2023.

The NTI Tx Series boilers are available in space-heating and combi versions. The Tx Series are fully condensing and include a highly efficient stainless steel heat exchanger. With a built-in low-loss header and internal primary loop pump, installation and maintenance will be a breeze. Efficiencies of up to 95% AFUE and dependability you have come to trust from NTI.

Features at a glance:

  • Ferritic stainless steel heat exchanger,
  • Turn-down ratio of up to 8:1,
  • Condensate pump receptacle,
  • Available in both space-heating and combi-versions,
  • Pre-wired for use with an indirect water heater,
  • Advanced integrated control,
  • Hinged front panel for easy service and maintenance,
  • Warranty:
    Heat Exchanger: 5 Years
    Parts: 5 Years
    Labour: 2 Years

External Link: NTI Tx Series Boilers

NTI Tx Series Boilers with open front
NTI Tx Boiler Inside View
ModelTX51TX81TX101TX151TX200TX151C CombiTX200C Combi
Rated CSA Input (Min to Max) (MBH)7.1 to 5710.3 to 8212.6 to 10118.9 to 15124.9 to 19918.9 to 15124.9 to 199
DOE Heating Capacity (MBH)52759213918474111
Net AHRI Rating (MBH)4565801201606496
AFUE94%95%
Max DHW OutputN/A795 l/h (3.5 GPM)1045 l/h (4.6 GPM)
ENERGY STAR® CertifiedEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star LogoEnergy Star Logo
FuelNatural Gas, Liquid Propane Gas