Understand the fault first
Ask what failed, how the cause was assessed and what remains uncertain. A replacement proposal should explain which problem it solves; age alone does not establish the right option.
Compare complete options
For repair and replacement, record the materials or product, access work, testing, making good, timing and warranties. Note what remains unresolved under each option.
Choose using the same priorities
Discuss budget, disruption and planned renovations. Avoid assumed savings or universal repair-price rules. Use the quote worksheet to capture gaps in each proposal.