VERT / GREEN
Measure loads, water temperatures and existing emitters before choosing equipment.
Air-to-water heat pump and hydronic system
Verify whether radiators, radiant floors or fan coils can actually heat the home at heat-pump-efficient water temperatures.
JAUNE / YELLOW
A system designed for very hot water may lack capacity with a low-temperature heat pump.
ROUGE / RED
Do not size from nominal output alone: design load, water temperature, backup and controls must be checked together.
Project triage
What the professional checks
The HVAC/hydronic designer verifies room loads, performance curves, temperatures, flow, buffer volume, backup and controls.
Official sources
Vérifié / checked: 2026-08-23
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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V14
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V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.
V16
Advanced diagnostics to cross-check
V16 connects water, soil, climate, safety, materials and seasonal use to existing projects.
V17
Specialized systems to cross-check
V17 completes gas, soil, water, fire, climate and structural interfaces.
V18
Specialized diagnostics to verify
V18 connects systems that become costly or regulated when a primary project triggers them.
V19
Edge systems to integrate into the project
V19 covers interfaces that become important when multiple home systems interact.
V26
Often-overlooked service interfaces
V26 connects systems that cross utility, plumbing, HVAC, envelope and metering boundaries.
V27
Project risks and overlooked interfaces
V27 connects payment, water, envelope, ventilation and jobsite details that often create costly surprises.
V28
Finish and service details to verify
V28 connects small details that become costly once finishes are closed.
V30
Shared, access and specialized interfaces
V30 connects projects where multiple systems, owners or rules meet.