Decision-first library
Find the topic that matches the job
Start with what you are trying to decide, not a brand name or a sales claim.
13 field notes
Choose a heater
Compare heat pumps, gas heaters, electric resistance units, and solar systems by the job they do best.
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Size the system
Work from pool volume, surface area, temperature lift, wind, and desired heat-up speed.
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Keep the heat
Plan solar collectors and reduce evaporation with the right cover and operating routine.
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Fix a problem
Trace low flow, weak heating, noise, icing, and error conditions without bypassing the manual.
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Check compatibility
Understand hoses, pumps, bypass kits, electrical service, and brand-specific connection questions.
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