Kirloskar CPBS 84424 V 1.5 HP Pressure Boosting System

The Kirloskar 1.5 HP Pressure Boosting System is the highest-capacity variant in our HYPN range, engineered for villas, large independent homes, multi-storey buildings, and small commercial setups (farmhouses, guest houses, small hotels) with 4 to 5+ bathrooms or outlets. It delivers the strongest flow rate and head in the range, so pressure stays constant even when multiple floors and outlets draw water at the same time.

Why bigger homes need more than a 1 HP pump: As the number of bathrooms, floors, and simultaneous draw points increases, so does the total demand placed on a pressure boosting system at peak times — early mornings and evenings, when several bathrooms, a kitchen, and possibly outdoor taps are all in use together. A 1 HP unit sized for a smaller home will cycle far more frequently under this load, work harder to maintain pressure, and is more likely to show a drop in performance at the outlet furthest from the pump — typically the top floor or the far end of the house. The 1.5 HP variant is built with a higher flow rate and head specifically to absorb this heavier, more concentrated demand without pressure sagging at any one point.

This is the variant to choose when a 1 HP pump would struggle — for example, homes with 3+ floors, large overhead tanks, or properties where several bathrooms and outdoor taps (garden, car wash) run together. It's also the right choice for properties that combine domestic and light-commercial use, such as a farmhouse with guest rooms, a small boutique hotel, or a house with a rental portion drawing from the same supply line.

How it performs under multi-point demand: Like the smaller HYPN variants, the 1.5 HP system uses an automatic pressure switch and pressure vessel to sense demand and respond instantly — but with a higher-rated motor and pump curve, it sustains flow and heads across more simultaneous outlets before pressure begins to fall. For a G+2 villa with 4-5 bathrooms, this typically means a shower on the top floor stays just as strong whether or not the ground-floor kitchen tap is running at the same time — the scenario most often behind searches like "water pressure is weak on top floor villa."

Who should buy the 1.5 HP variant:

• Villas and large independent homes with 4–5+ bathrooms
• Multi-storey homes (G+2 and above) fed from one tank
• Farmhouses, guest houses, small hotels, or societies with shared supply points
• Homes with outdoor usage (garden hose, car washing) in addition to bathrooms
• Anyone upgrading from a 1 HP unit that's struggling to keep up with household growth or renovation

Installation and space requirements: Because of its higher output, the 1.5 HP unit is marginally larger than the 1 HP variant and benefits from a dedicated, ventilated mounting space near the tank or sump, along with a dedicated power circuit. For multi-storey installations, our team typically recommends a site visit to confirm pipe sizing (suction and delivery diameter) is adequate to fully take advantage of the higher flow rate — undersized existing pipework can bottleneck even a correctly sized pump.

Running cost versus benefit: At 1.1 kW, the 1.5 HP motor does draw more power than the smaller variants, but for a home in this size category, the alternative — inconsistent pressure, weak upper-floor showers, or running a 1 HP pump constantly under strain — typically costs more in the long run through higher wear, more frequent servicing, and lower daily comfort. This is why we recommend buyers size to their actual bathroom count and floor count rather than choosing the cheaper 1 HP unit for a home that has outgrown it.

If your home is smaller, the Kirloskar 1 HP Pressure Boosting System for 2-3 bathroom homes → will be more efficient and cost-effective — oversizing a pump wastes electricity without added benefit.