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What assumptions should go into a pool heat-pump retrofit quote?
A heat-pump price is hard to compare if one estimate includes electrical or plumbing changes and another treats them as separate work. What should a retrofit quote spell out so the total cost is clear?
I’d also want to know what pool size, local climate, and swimming season the proposed sizing assumes, and how the contractor estimates seasonal energy use. Which details make those assumptions useful enough to compare against keeping the existing heating setup, without relying on a payback estimate built around someone else’s utility rates?
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For the seasonal energy estimate, could each bidder use the same target pool temperature, swimming schedule, and local weather assumptions, then list heat-pump electricity separately from any backup-heater use? That’d make the estimates easier to compare and let you apply your own electricity rate.
- Since electrical and plumbing changes can sit outside the headline price, ask for separate prices for the heat pump, required electrical work, plumbing changes, and commissioning. Have each bidder label optional work and exclusions, too. Then you can tell whether a lower quote reflects a less expensive installation or just leaves necessary work out.
Have each bidder state the pool’s surface area and the months it’s expected to be heated. Those inputs help explain the assumed heat loss and operating hours, making the estimated electricity use more useful for comparing with the existing setup.