Which pump is better for pressure boosting a house?

The Pearl THOR 15F16S, because its 118 ft maximum head gives more shutoff pressure than the AquaStrong's 108 ft. Neither is a packaged booster system, so you still need a pressure tank and switch.

Which has more flow for sprinklers?

The AquaStrong lists a 4250 GPH maximum flow; Pearl does not publish a flow figure for the THOR 15F16S. For large zones with short runs, the AquaStrong's 2" suction port also helps.

Which pump lasts longer?

Both use cast-iron casings and 1.5 HP single-phase motors, so build quality is close. The Pearl is rated for continuous duty and lists a 150 °F liquid limit; the AquaStrong publishes neither, so the Pearl has more documented endurance.

Can both run on 115V or 230V?

Yes. Both list 115/230V single-phase motors and need to be wired for one voltage at installation. Confirm the motor nameplate wiring before connecting.

Is the AquaStrong worth choosing over the Pearl?

Only if flow matters more than head. It wins on listed flow and suction size; the Pearl wins on head, continuous-duty rating and published temperature and pressure limits.

What size piping fits each pump?

The Pearl takes 1-1/2" NPT on both suction and discharge. The AquaStrong takes 2" NPT suction and 1-1/2" NPT discharge, so its intake line must be larger.

Pearl THOR 15F16S Centrifugal Sprinkler Pump (1.5 HP, Single Phase, 115/230V) vs AQUASTRONG 1.5 HP Centrifugal/Jet Pump, 4250 GPH, 115/230V, Durable Cast Iron Pump for Lawn Sprinkler and Irrigation

Both are 1.5 HP cast-iron single-phase sprinkler pumps with 115/230V motors. The Pearl THOR 15F16S has the higher maximum head (118 ft vs 108 ft) and a larger 2" suction port on the AquaStrong side, while the AquaStrong SPRK150 lists a 4250 GPH maximum flow. Buy the Pearl for pressure and lift; buy the AquaStrong for maximum flow and a bigger suction line. No current prices were provided for either pump, so compare store prices on this page before deciding.

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