Explore Our Water Heater Categories
Eco-Friendly Hot Water for Every Application
Choosing the right water heater depends on where and how you’ll use it. Here’s how our models fit various domestic and commercial needs—while keeping energy efficiency and sustainability front of mind:
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Showers:
- Storage water heaters with mains pressure ensure high flow rates and consistent temperature even with multiple users.
- Eco tip: Select models with timers or smart controls to reduce unnecessary heating and energy waste.
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Kitchens:
- Undersink and oversink heaters provide rapid hot water at one or two kitchen sinks, cutting waiting time and water wastage.
- Eco tip: Smaller, well-insulated units save electricity without sacrificing performance.
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Utility & Laundry Rooms:
- Flat or wall-mounted water heaters are compact and ideal for utility sinks, garages, or annexes.
- Eco tip: Combine with renewable energy sources to minimize environmental impact.
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Commercial Applications:
- 3-phase water heaters support gyms, hospitality venues, salons, and larger families.
- Eco tip: Look for models with rapid heat-up and low standing heat loss.
Always choose products rated for energy efficiency, and set water temperatures to the lowest safe level to reduce energy use and carbon footprint.
Benefits of Efficient Storage Mains Pressure Hot Water Heaters
- Reliable high-pressure hot water at multiple outlets simultaneously.
- Preheated storage reduces wait times during peak use.
- Safety features for legionella prevention and anti-scald protection.
- Compatible with renewable energy systems and off-peak tariffs to boost sustainability.
- Low-maintenance design lowers ongoing costs and waste.
Instant vs Storage Water Heaters
- Instant (Tankless): Heat water on demand without a tank. Best for single outlets, more energy-efficient due to no standby losses but with lower flow.
- Storage: Store hot water for multiple outlets and users, supplying high flow and pressure but with slight standby energy use due to tank insulation.
3-Phase Water Heater Models
- Designed for large residential or commercial properties with high hot water demand.
- Offer faster recovery times and stable power load distribution.
- Often paired with larger tanks or commercial-grade instant heaters.
Water Heater Accessories
Complete your installation with essential accessories:
- All Water Heater Accessories
- Connection Set & Fitting Kit (6 Bar) – For secure, reliable connections.
Expansion Vessel Guide for Water Heaters
Expansion vessels allow for safe thermal expansion in pressurized water systems. Correct sizing and maintenance protect your system and improve efficiency.
Sizing Guide
- Minimum: 3–4% of cylinder volume (e.g., 200L tank needs 6–8L vessel).
- Small systems: 10% of tank capacity or a 2L vessel for 10–15L units.
- Instantaneous heaters ≤15L usually don’t require a vessel.
- Systems with variable speed pumps need a vessel 6x the max flow rate.
Key Points
- Consider maximum water temperature (typically 60-65°C for domestic use).
- Check static pressure (height of water column above vessel).
- Verify safety valve pressure settings (usually 3–6 bar).
Always have a qualified installer confirm sizing and compliance for your system’s safety and performance.
See our Potable Expansion Vessels for reliable, certified options.
Choosing the Right Storage Tank Size (7 – 250 Litres)
Picking the correct storage tank size ensures ample hot water without wasting energy:
| Tank Capacity | Ideal For | Typical Use |
|---|---|---|
| 7–15 litres | Single sink | Handwashing, light dishwashing in kitchenette, cloakroom, utility sink |
| 20–30 litres | Two sinks or basin | Kitchen plus hand basin, light utility use |
| 30–50 litres | Small household | Short showers, kitchen plus small bathroom - 1 to 2 people |
| 50–100 litres | Regular household | Standard showers, bath, kitchen, utility - 2 to 4 people |
| 100–150 litres | Larger households | Multiple showers/baths, 3 to 5 people |
| 150–250 litres | Large homes or small businesses | Several bathrooms, frequent use, 5+ people |
Choose a tank size tailored to your household or business to avoid unnecessary energy consumption from oversized tanks.
