300L Air Source Heat Pump Water Heater

300L Air Source Heat Pump Water Heater — High-Volume, Maximum Savings

The 300L Air Source Heat Pump Water Heater is designed for applications where hot water demand is consistently high: large families, guesthouses, bed-and-breakfasts, small lodges, and commercial kitchens. With 300 litres of capacity and a high-efficiency heat pump compressor achieving COP 4.0 under typical South African conditions, it is the most capable residential heat pump water heater in our range.

Key Specifications

• Tank Capacity: 300 litres
• Heat Pump Compressor Input: 900W
• Thermal Output: 3.6kW at COP 4.0
• COP Range: 3.8–5.0 (ambient dependent)
• Operating Range: 5°C to 48°C ambient
• Maximum Water Temperature: 65°C
• Tank: Food-grade SUS316L stainless steel
• Insulation: 60mm high-density PU foam
• Control: Digital panel with programmable timer (7-day), fault display
• Backup Element: 3kW electric element (automatic activation below 5°C)
• Refrigerant: R410A
• Warranty: 2 years compressor, 5 years tank

Commercial and Guesthouse Applications

A 300L heat pump water heater is suitable for guesthouses and B&Bs with up to 6–8 guests, small lodges, schools, offices, and any commercial application with daily hot water consumption under 300 litres. For higher-demand commercial applications, multiple 300L units can be installed in parallel — contact us for commercial sizing assistance.

SUS316L Stainless Steel Tank

The 300L unit features a food-grade SUS316L stainless steel inner tank — the same material used in brewing and food processing industries. This grade of stainless is highly resistant to corrosion and pitting in hard water areas, significantly extending tank life compared to standard SUS304 tanks. The 5-year tank warranty reflects this quality.

Smart 7-Day Timer and Diagnostics

The digital control panel allows programming of 7-day heating schedules — set different heating patterns for weekdays and weekends, align heating cycles with solar production or off-peak tariff periods, and monitor current water temperature and heat pump operating mode. The fault display codes allow rapid diagnosis of common issues without requiring a technician call-out.

Return on Investment for Commercial Applications

A guesthouse running a 300L electric geyser typically spends R800–R1,500 per month on hot water electricity alone. The 300L heat pump reduces this to R240–R450 per month — a saving of R560–R1,050 monthly. Annual savings of R6,700–R12,600 mean the unit pays for itself in 3–6 years, with 10–15 years of savings thereafter.

FAQ

Can the 300L heat pump supply a commercial kitchen?

A 300L tank can supply a small commercial kitchen requiring continuous hot water if the heat pump runs overnight to heat the full tank before service begins. For kitchens requiring on-demand hot water throughout service periods, a larger-capacity system or instant water heater may be more appropriate. Contact us for a commercial hot water assessment.

What maintenance does a heat pump water heater require?

Annual inspection of the air filter (clean or replace every 12 months), annual refrigerant pressure check, and periodic anode rod inspection (every 3 years). Total annual maintenance cost is typically R500–R1,000 — far less than the ongoing electricity savings the unit delivers.

Is the 300L heat pump water heater eligible for rebates?

Yes. The 300L heat pump water heater qualifies for Eskom DSM and most municipal rebate programmes. Commercial installations may qualify for larger commercial rebates. We assist with rebate application documentation as part of the installation service.

How does a heat pump water heater compare to a solar geyser?

A solar geyser uses direct solar thermal energy to heat water — highly efficient on sunny days but provides limited hot water on cloudy days without a backup element. A heat pump water heater uses electricity but at a fraction of the consumption of a conventional geyser — it works at any time of day or night and in any weather above 5°C. Heat pumps are generally more reliable year-round; solar geysers have zero operating cost on sunny days. Both are far superior to conventional electric geysers and the best choice depends on your specific situation.