A.O. SMITH
Authorised dealer · Bengaluru

Replace your geyser.
Cut your bill by 70%.

A.O. Smith HPI heat pump water heaters extract heat from the air — delivering 3.5 units of hot water for every 1 unit of electricity. The average Bengaluru household saves ₹1,000–1,500 per month after switching.

Payback in under 3 years on electricity savings alone Based on a 4–5 person household replacing a 2kW electric geyser, Bengaluru rates
Choose by household size
HPI 40 — 150L3–5 person homes · most popular
HPI 50 — 180L5–8 person homes · larger families
Top pick
HPA 80 — 300LLarge families
Top pick
CAHP / MC — 450–500LCommercial · apartments · offices · boutique hospitality

Why a heat pump heats water better than a geyser

A conventional electric geyser converts 1 unit of electricity into 1 unit of heat — that's a COP of 1.0. An A.O. Smith HPI heat pump moves heat from the surrounding air into the water tank, achieving a COP of 3.5. The same electricity produces 3.5× more hot water.

Bengaluru's climate (ambient temperature 18–35°C year-round) is ideal for heat pump operation. The HPI runs in efficiency mode over 95% of the year.

3.5×
More hot water per unit of electricity vs. geyser
70%
Reduction in water-heating electricity cost
<3 yr
Payback period on electricity savings
3-yr
Service contract available through Nirmala
How the HPI works
1
Air intake Fan draws warm ambient air across the evaporator coil
2
Heat absorption Refrigerant absorbs heat from air, evaporates into gas
3
Compression Compressor raises refrigerant temperature significantly
4
Heat transfer Hot refrigerant heats water in tank via condenser, cools and cycles back
Hot water ready 35–75°C at COP 3.5 — on 460W efficiency mode

A.O. Smith HPI heat pumps we supply

Showing all 6 products
HPI 40 150 Ltrs
Residential

HPI 40 — 150 Litre

The go-to model for 3–5 person households. Runs in efficiency mode (460W input, 1750W output) for daily hot water needs. Hybrid turbo mode available for peak demand. AES smart scheduling minimises thermal loss.

COP 3.5 efficiency 150 L tank 460W efficiency / 2500W turbo Triple safety protection
HPI 50 180 Ltrs
★ Most popularResidential · Large

HPI 50 — 180 Litre

The larger variant for 5–8 person households or homes with high simultaneous hot water demand. Same COP 3.5 efficiency as HPI 40, with a 30L larger tank to handle peak usage without running short.

COP 3.5 efficiency 180 L tank 5–8 person homes AES adaptive scheduling
HPI 80 300 Ltrs
★ Most popularLarge villa

HPA 80 — 300 Litre

A hybrid heat pump with 300L capacity for large villas, farmhouses, and small hospitality setups. Handles high simultaneous demand with a hybrid operating mode for peak supply, while maintaining everyday efficiency.

300 L tank Hybrid turbo mode Villa / small hospitality
CAHP 1.5 450 Ltrs
Commercial

CAHP 1.5 — 450 Litre

Air-to-water heat pump with a split outdoor unit and 450L tank. Designed for apartment complexes, guest houses, clinics, and commercial premises. High output with consistent efficiency across operating hours.

450 L capacity Residential / commercial All in one unit
CAHP 3HP 450 Ltrs
Commercial · High capacity

CAHP 3HP — 450 Litre

Higher-powered 3HP variant of the CAHP for larger commercial deployments. Faster recovery time, suitable for hotels, clinics, large apartment blocks, and educational institutions with continuous hot water demand.

450 L · 3HP Fast recovery Hotels · hospitals · institutions
MC 19/38 500 Ltrs
Commercial · Industrial

MC 19/38 — 500 Litre

High-output modular heat pump system with 500L storage for large-scale commercial and institutional installations. Dual outdoor unit configuration for redundancy and continuous supply even during maintenance.

500 L · 19/38 kW Dual outdoor unit Redundant operation

How much will you save?

Adjust the sliders to estimate your monthly savings. Based on Bengaluru domestic electricity tariff (₹6.5/unit) and average geyser usage.

Estimate your monthly savings
Geyser capacity 2 kW
Daily usage hours 2 hrs
Electricity rate (₹/unit) ₹6.50
Current monthly cost
₹780
With electric geyser
Monthly saving
₹546
After switching to HPI
Approximate payback period
2.7 years
Based on HPI 40 starting price · actual savings may vary

Choosing the right model

All HPI models use the same heat pump core. The main difference is tank size and heat output. Our engineer will recommend the right model during the free home assessment.

Feature HPI 40 — 150L HPI 50 — 180L ★ HPA 80 — 300L ★ CAHP — 450L MC — 500L
Tank capacity150 L450 L500 L
COP (efficiency)3.84.24.2
Hybrid turbo mode
Ideal household3–5 personsVilla / commercialLarge commercial
Unit typeIntegratedSplitSplit · dual
3-yr service contract
What our customers say

Bengaluru families saving every month

"The heat pump was recommended by Nirmala and it's been brilliant. Our electricity bill dropped by over ₹1,200 a month. Paid for itself faster than we expected. Professional installation."
PM
Priya M.HSR Layout, Bengaluru
"Got the HPI 40 installed 8 months ago. Before, our geyser was running ₹1,800/month. Now it's under ₹500. The team explained everything clearly and the unit runs silently."
SV
Suresh V.Marathahalli, Bengaluru

Stop paying 3× more for hot water

Free site assessment · right-sized recommendation · 3-year service available

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