Navien Tankless in Ottawa

Sizing is the whole game

We size tankless by the hot water you need at the fixtures, not by square footage. In Ottawa, incoming water is colder in winter, so the same unit delivers fewer gallons per minute at a higher temperature rise. If you have two showers that overlap, a big soaker tub, or higher-flow fixtures, that changes the recommendation fast.

Bigger isn’t automatically better

Oversizing can increase gas and venting requirements and raise installation complexity without giving you a real benefit day-to-day. The goal is enough capacity for your real peak windows, without paying for a setup your home can’t support cleanly.

Recirculation affects comfort and operating cost

If you’re trying to reduce “wait time” at far bathrooms, recirculation can help—but it needs to match your plumbing layout and your expectations. Depending on how it’s configured, recirculation can increase energy use. We’ll talk through the tradeoffs and recommend a setup that makes sense for your home.

What affects price (in plain terms)

Most of the cost swing comes from what the home needs to support tankless properly: gas line capacity or upgrades, the venting route/length/material, condensate drain routing (and neutralizer when applicable), and whether recirculation is being added. The unit itself is only one piece of the job.

Warranty/registration note

Manufacturers typically expect correct installation, documentation, and proper maintenance to keep warranty coverage straightforward. We install to code, leave you with clear documentation, and set realistic expectations on maintenance.

What Peak Comfort verifies on-site

We confirm gas pipe sizing and pressure, a venting plan that works for your layout, condensate drainage, and service access (so the unit can be maintained without hacks). We also verify a clean valve/flush setup, safe clearances, and a sensible location for long-term reliability.