Compare capacity at the conditions that matter
Ask how the proposed heat pump's performance at low outdoor temperatures compares with your home's heating demand. A headline capacity alone does not explain winter performance. Request the model numbers and the assumptions used in sizing so that you can compare proposals on the same basis.
Clarify the supplementary heating plan
Discuss whether your existing furnace will remain or whether another supplementary heat source is proposed. Ask how the controls select between heat sources and what equipment changes are included. A hybrid arrangement needs an assessment of compatibility; keeping the existing furnace should not be assumed.
Review the installation layout
Confirm where the outdoor unit and any indoor equipment will sit. Ask about service access, drainage, electrical work, duct connections and thermostat compatibility. Mention access restrictions and planned renovations before the quote is finalized. An installation proposal should describe this work, not only list an equipment model.
Check operating-cost assumptions
A savings estimate depends on the existing heating system, energy rates, equipment performance, home and use of supplementary heat. Ask for the assumptions behind a comparison rather than relying on a universal percentage saving. If a rebate is mentioned, confirm the current program rules and the proposed equipment's eligibility before committing.
Keep the handover information
Request the equipment manuals, control settings, maintenance guidance and written warranty terms. Keep the model numbers and installation documents together. When you request an assessment from Thermoza, include your current furnace or heating-system details and the rooms you want to heat and cool.