Triangle Tube built its residential reputation heavily around indirect-tank-paired combi and boiler systems, while Bosch offers a broader compact condensing lineup, which shapes which one fits a given hot-water setup best.
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Triangle Tube is well regarded in the trade for boilers designed to pair efficiently with indirect storage tanks for domestic hot water, often using a fire-tube style heat exchanger design, while Bosch's residential condensing boilers cover a broader range of configurations including standalone space heating. For a Metro Vancouver home that wants strong recovery for hot water alongside heating, Triangle Tube's indirect-tank-focused approach is often highlighted by installers; for straightforward space-heating-only jobs, Bosch's lineup can be a more general-purpose fit.
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Triangle Tube's residential boilers are commonly built around a fire-tube heat exchanger design, which the trade generally associates with good tolerance for variable water flow and solid performance when paired with an indirect tank for hot water. Bosch's condensing boilers use their own heat exchanger designs across different models, and the exact material and configuration should be confirmed against the documentation for the specific unit rather than assumed from the brand name.
Both approaches can deliver reliable heating when properly sized and maintained; the meaningful difference for most homeowners is less about the metallurgy and more about how the boiler is configured with the rest of your hot water and heating system.
If a technician leans heavily on heat exchanger material as the main selling point for one brand over the other, ask them to explain how that translates into a practical difference for your specific system, since sizing and configuration generally matter more to day-to-day performance.
If your household regularly runs into hot water shortages — several bathrooms used close together, a soaking tub, or a secondary suite drawing from the same system — pairing a boiler with a properly sized indirect storage tank is often the more reliable route than a combi unit trying to do both jobs at once. Triangle Tube's product positioning leans into this use case, and many Lower Mainland installers specifically reach for the brand when an indirect tank is central to the design.
Bosch also supports indirect tank pairing on its boiler-only models, so this isn't an exclusive advantage, but it's worth discussing directly with your contractor which specific model and tank size combination best matches your household's simultaneous demand.
Both brands generally use sealed combustion and vent through PVC, CPVC, or polypropylene depending on the model, which suits the tighter mechanical closets common in Metro Vancouver townhomes and newer detached construction. In an older character home retrofit, either brand can typically be adapted to an existing baseboard or radiator system, though a buffer tank may be recommended when replacing a much larger old cast-iron boiler with a smaller modern one.
As with any condensing boiler, acidic condensate needs a proper drain path, and your installer should confirm local code requirements around neutralization before the flush water reaches a floor drain.
| Consideration | Bosch | Triangle Tube |
|---|---|---|
| Heat exchanger emphasis | Model dependent | Commonly fire-tube design |
| Indirect tank pairing | Supported on boiler-only models | Strong brand focus on this configuration |
| Best fit | General residential heating | Homes prioritizing hot water recovery |
| Venting | Sealed combustion | Sealed combustion |
Rather than comparing heat exchanger marketing language, focus the conversation with your contractor on your household's actual hot water and heating demand together. If simultaneous hot water use is a known pain point in your home, ask specifically how each brand's boiler-and-indirect-tank combination is sized to handle it.
A full installation, including an indirect tank if needed, generally runs in the $6,500 to $14,000+ ballpark for a new boiler install, or $7,500 to $15,000+ for a full system replacement in Metro Vancouver — always confirmed after an on-site look at your specific mechanical room.
It's also worth planning ahead for annual servicing on either brand — flushing the indirect tank periodically, checking the aquastat or control settings, and inspecting the venting and condensate drain each year help preserve both efficiency and hot water recovery over the long run. Skipping these routine checks tends to shorten the practical service life of any condensing boiler more than the choice between these two well-regarded brands ever would.
Safety note
Boiler and indirect tank installation must be performed by a Technical Safety BC licensed gas fitter — CANRO holds gas licence LGA0043870 and boiler licence LBP0046450. If you smell gas, leave the home immediately and call FortisBC at 1-800-663-9911.
It has certain advantages for tolerance to water flow variation, which the trade often associates with reliable performance alongside an indirect tank, but overall system design and sizing matter more to real-world performance than heat exchanger type alone.
Not necessarily — both brands offer combi options that produce domestic hot water without a separate tank, but an indirect tank generally provides better simultaneous hot water capacity for larger households.
Yes, generally, since radiant systems typically run at the lower water temperatures that suit condensing boiler operation well, though your installer should design the specific piping and controls.
An indirect tank uses the boiler's heat to warm domestic water very efficiently and can offer strong recovery, which is useful for households with high simultaneous hot water demand, but it does add mechanical room space compared to a combi unit.
Availability varies by wholesaler and contractor relationships. Ask your installer directly about typical lead times for parts and equipment for the specific brand and model you're considering.
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