There are plenty of great 15l horizontal water heaters to choose from, such as Havells, AO Smith, USHA, it’s difficult for customers to make a shopping decision. We have done a thorough research and found the top best 15l horizontal water heaters on the market right now.
Our experts tested a variety of 15l horizontal water heaters in the market. Right on top of the list is Havells 15l Horizontal Water Heaters. Check out some more of our favorites below, and read some valuable insight from the experienced editors.
Top 6 best 15l horizontal water heaters
1. Havells Monza Slim

- Feroglass coated tank with single weld-line design
- Incoloy heating element and Capacity: 15 liters
- PUF Insulation: CFC free high density PUF insulation prevents heat loss
- Rated pressure:0.8 MPa and reheating time in minutes to raise 50C :20 minutes
- Warranty: 5 years on inner container and 2 years comprehensive
- Power: 2000 watts; Operating Voltage: 220 - 240 volts
- Includes: Heater, Manual, Wall mounting accessory and 2 flexi pipe
- Installation: Horizontal with left side configuration
- Country of Origin: India
2. AO Smith HAS-X1-015-RHS

- Type: Storage-RHS model ; Capacity: 15 Litres; Wattage: 2000 Watts; Pressure: 8 Bars ; BEE Rating: 4 Star
- Inner Tank Material: Blue Diamond Glass Lined Tank- 2X Corrosion Resistance; Outer Body Material: Metal
- Product Dimensions: 32 cms X 49.2 cms X 32 cms
- Warranty: 7 years on inner tank, 2+2* years extended warranty on glass coated heating element and 2 years comprehensive
- Included in the box: 1 Horizonatal Storage Water Heater, User Manual , Mounting Screws
- Glass-Coated Heating Element to prevent scale formation and extend the life of heating element
- BEE 4-star rated with Advanced PUF Technology for Power Savings. Perfect if you want to go green
- Double Protection with Thermal Cut-Out and Multi-function Safety Valve
3. Usha Aqua Horizon

- A Super Slim 310mm diameter ABS body makes it perfect for horizontal mounting.;SS316 Heating Element for faster heating
- Liquid Enamel coated inlet/outlet pipe helps prevent rust.;Glass line coating on heating element and inner tank to ensure longer running life
- Heavy duty magnesium anode rod to prevent rust or corrosion and maintain life of element even in hard water;BEE Star Rating : 3 Star. Warranty: 8 years on Tank, 3 years on Element, 2 years on Product.
- Installation Kit included in Packaging. Free installation in select cities only.;Included Components: 1 Unit Product, Instruction Manual, Warranty Card; Number Of Pieces: 1
- Material Type: Acrylonitrile Butadiene Styrene