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Air sealing, insulation, distribution and habits shape comfort. The best equipment cannot correct a poor system by itself.
Key decisionDecision: correct or plan the envelope before locking in capacity.
The load can change
Insulation and air-sealing work can reduce heating needs. If that work is planned, it must be included in the calculation to avoid oversizing.
Distribution matters
A central heat pump depends on ducts and airflow. A wall-mounted or multi-zone solution depends on indoor-unit placement and movement between spaces.
The outcome to target
A sound project balances comfort, consumption, cold-weather capacity, sound, maintenance and budget. The brand comes after the problem is defined.
Official sources
Updated :
Programs and criteria can change. Always verify the official source before making a decision.