Compare actual routes
Ask a qualified plumber to identify the current and proposed routes to the kitchen and frequently used bathrooms. Straight-line distance is not the same as the installed pipe route. Request the pipe sizes, approximate volume that must clear, and expected wait under stated fixture-flow conditions.
Record today's waits during ordinary use if you can do so without a hot-water exposure test. Note whether another fixture was recently used, since that changes the starting condition. Ask the provider to explain how its estimate compares with those observations.
A larger heater is not automatically the answer to water sitting in a longer pipe. Separate the time needed for water to arrive from whether enough hot water is available once it does.
Evaluate circulation as a complete option
A recirculation system uses a pump to move hot water toward fixtures and return cooled water to the heater, helping shorten the wait. The return path depends on the design. How demand recirculation works
If a recirculation system is proposed, ask how it works with the selected heater, how and when it runs, and what piping changes are needed. Compare the added installation, electrical, service, and operating costs with the convenience you want.
Request the exact manufacturer's compatibility requirements. Do not assume a continuously running loop or an existing pump suits a heat-pump water heater. Ask about an approved demand-controlled approach if circulation is needed.
Make responsibility clear
The relocation plan should name the provider responsible for household piping, the heater installation, electrical work, drainage, and any wall repair. Request permitted work and final delivery verification in the scope.
Your next step is to obtain a current-versus-proposed piping comparison and compare relocation alone with any supported circulation option. Choose with the expected wait, total cost, and household use visible.