NTI TFTN Premium Condensing Boiler
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The NTI TFTN Series is NTI's premium wall-hung condensing boiler for larger homes, custom homes and light commercial buildings. It is a heat-only boiler from 85 to 399 MBH with built-in zone control and a low water cutoff, and every price includes standard installation by our TSSA-certified gas technicians, who specialize in hydronic heating across Toronto and the GTA.
- ✓ Standard installation included in every price
- ✓ Up to 96% AFUE (TFTN085); 95% or higher on every size
- ✓ Heat-loss sizing for homes, multiplexes and small commercial buildings
- ✓ 1-year labour warranty, plus 5-year parts and the manufacturer's heat exchanger warranty
- ✓ Financing available, with no upfront payment options
⭐ Where the TFTN Fits
We install three boiler brands. Each one is a good boiler; they differ in price and features:
NTI
Canadian-made and well known. The choice most of our customers make. This page: TFTN, NTI's top wall-hung model. For most homes see the TRX Series II.
Compare installed prices for every brand in our Boiler Replacement Cost Toronto guide.
📏 Choose Your TFTN Size
| Model | Best for | Net AHRI output | Heating connections |
|---|---|---|---|
| TFTN085 | Small homes | 69 MBH | 1¼" NPT |
| TFTN110 | Small to medium homes | 88 MBH | 1¼" NPT |
| TFTN150 | Large homes | 120 MBH | 1¼" NPT |
| TFTN199 | Very large homes | 160 MBH | 1¼" NPT |
| TFTN285 | Custom homes, multiplexes | 229 MBH | 1¼" NPT |
| TFTN340 | Light commercial | 282 MBH | 1½" NPT |
| TFTN399 | Light commercial | 330 MBH | 1½" NPT |
Home size is a guide only. We confirm the right model with a heat-loss calculation before installation.
💡 Need hot water too? The TFTN is heat-only. Pair it with an NTI Trin & Stor indirect tank; the built-in controls handle up to 3 heating zones plus domestic hot water. For bigger buildings see Commercial Boiler Installation.
🔥 Key Features
- ✓ Built-in zone control for up to 3 heating zones plus domestic hot water (expandable to 6 zones with the N-Link module)
- ✓ Built-in low water cutoff
- ✓ Top and bottom plumbing connections for easier retrofits
- ✓ NTI net Wi-Fi for remote monitoring, alerts and service diagnostics
- ✓ EZ Set-up Wizard and an easy control interface
- ✓ Cascade up to 8 boilers for larger buildings
- ✓ Sizes from 85 to 399 MBH wall-hung; floor-mount TFTN 500–850 MBH available for commercial projects
- ✓ Works with radiators, baseboard, radiant floors, snow melt and hydronic air handlers
📸 Our NTI Boiler Installations
🔧 What Standard Installation Includes
- ✓ Delivery of your new boiler
- ✓ Removal of your old boiler
- ✓ Wall mounting and connection to your existing heating system
- ✓ Gas, venting and condensate drain connections
- ✓ Startup, commissioning and controls setup
- ✓ 1-year labour warranty and warranty registration
A high-efficiency to high-efficiency replacement typically needs no extras. Added accessories (pumps, feeder valve, backflow preventer, air or dirt separator), new venting over 20 ft, extra plumbing or difficult access are quoted separately. See what can add to the cost.
This boiler is sold with installation only. Please contact us before checkout so we can confirm the right size and any extras for your project.
📋 Technical Specifications
Wall mount
| Model | TFTN085 | TFTN110 | TFTN150 | TFTN199 | TFTN285 | TFTN340 | TFTN399 |
|---|---|---|---|---|---|---|---|
| Input (MBH) | 8.5–85 | 11–110 | 15–150 | 19.9–199 | 28.5–285 | 39.9–340 | 39.9–399 |
| AFUE / thermal efficiency | 96% | 95% | 95% | 95% | 95% | 95.4% | 95.4% |
| Heating capacity (MBH) | 79 | 101 | 138 | 184 | 263 | 324 | 380 |
| Net AHRI (MBH) | 69 | 88 | 120 | 160 | 229 | 282 | 330 |
| Weight with water (lb) | 107 | 107 | 122 | 140 | 180 | 250 | 250 |
| Water content (gal) | 1.4 | 1.4 | 2 | 2.8 | 4.9 | 7.1 | 6.4 |
| Heating connections | 1¼" NPT | 1¼" NPT | 1¼" NPT | 1¼" NPT | 1¼" NPT | 1½" NPT | 1½" NPT |
Floor mount (commercial)
| Model | TFTN500 | TFTN600 | TFTN725 | TFTN850 |
|---|---|---|---|---|
| Input (MBH) | 50–500 | 60–600 | 72.5–725 | 85–850 |
| Thermal efficiency | 97.7% | 97.5% | 97.2% | 97% |
| Heating capacity (MBH) | 489 | 585 | 705 | 825 |
| Net AHRI (MBH) | 425 | 509 | 613 | 717 |
| Gas connection | 1" NPT | 1" NPT | 1¼" NPT | 1¼" NPT |
Wall-mount models: ¾" NPT gas connection; TFTN340 and TFTN399 are rated by thermal efficiency. Venting is sized per the NTI installation manual. Floor-mount sizes are quoted per project. Source: NTI TFTN brochure.
Documents: TFTN Brochure (PDF) · NTI Product Catalogue (PDF)
🛡️ Warranty
- ✓ Heat exchanger: manufacturer's warranty
- ✓ Parts: 5 years
- ✓ Labour: 1 year from Bison Air
🏆 Why Buy Your TFTN from Bison Air
- ✓ TSSA Certified HVAC Contractor
- ✓ Fully Licensed & Insured HVAC Technicians
- ✓ NTI is our most-installed boiler brand
- ✓ Hydronic specialists: boilers, radiant, snow melt and air handlers
- ✓ Clean, organized copper and PEX installations
- ✓ 1-year labour warranty on every installation
🔗 Related
- ✓ Boiler Installation Toronto
- ✓ Commercial Boiler Installation
- ✓ Boiler Replacement Cost
- ✓ All Boilers & Combi Boilers
- ✓ NTI TRX Series II Boiler
- ✓ NTI Trin & Stor Indirect Tank
- ✓ Heated Driveway & Snow Melt
- ✓ HVAC Financing
📍 Areas We Serve
NTI TFTN boiler installation throughout Toronto and the GTA:
Toronto · North York · Scarborough · Etobicoke · Vaughan · Markham · Richmond Hill · Aurora · Newmarket · East Gwillimbury · King City · Stouffville · Mississauga · Brampton · Oakville · Milton · Burlington · Barrie · Innisfil · Orillia · Bradford · Keswick · Ajax · Pickering · Whitby · Oshawa · Orangeville
🔥 Get Your NTI TFTN Quote
Tell us about your home or building and current boiler. We will confirm the right TFTN size and give you a clear written price.
or fill out our form for a free consultation · Serving Toronto & the GTA
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