Check for an accessible vertical stack and simultaneous shower use.
V19
Drain-water heat recovery
Recover shower heat through a drain-stack heat exchanger without mixing waste and potable water.
Checked: 2026-08-22
Performance depends on model, orientation and plumbing; choose a tested unit and suitable configuration.
Changes to potable/drain systems require plumbing/code compliance and cross-connection prevention.
Useful tools / data
- Stack diameter/height
- NRCan product list
- Shower-use profile
What the professional checks
- Select compliant configuration
- Coordinate water/drain piping
- Verify future access
Sources and limits
Triage helps prepare the project; it does not replace permits, calculations, inspections or regulated work.
Related path
Continue with the right tools
These links connect this page to the next useful checks and decisions without repeating the full content.
Start from a symptomOrganize plausible causes, observations, urgency and the right professional.Open →Track water useCompare meter readings and flag unusual changes.Open →Review water resilienceConnect flooding, drainage and future events to building adaptations.Open →Score home resiliencePrioritize water, outages, fire, climate, health and records.Open →Plan site, drainage and utilitiesCoordinate access, water, sewer, wells, septic, grading and site constraints.Open →
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