DEYE 300L Solar Air-Source Water Heater (AC/DC)

Bigger tank. Same ultra-efficient, solar-first heating.

Top benefits

• Up to 4.2× efficiency (COP ≈ 4.2) – ~4.2 kW heat from ~1 kW electricity

• Solar-first, grid-assist – runs directly from PV by day; seamless AC backup at night/low sun

• Smart control – Wi-Fi/Bluetooth app, schedules, weather-adaptive heating, grid power limiter

Why this heater?

• Large 300 L capacity – great for bigger families, guesthouses, or light commercial use.

• Real energy savings – extracts free heat from ambient air + sun to slash electricity costs.

• Daytime independence – operates on DC solar with no inverter or batteries required.

• Always-on hot water – auto-switches to grid AC when needed, with solar as priority.

• Intelligent comfort – weather compensation adjusts target temps to avoid wasted energy.

• Safer by design – PV lightning protection, residual-current monitoring, over-current/over-voltage protection.

Smart control & monitoring

• Deye Smart App (Wi-Fi/Bluetooth): set temps, view power usage, schedule heating.

• Grid AC Power Limiter: one-touch cap on grid draw to manage costs.

Versatile applications

• Domestic hot water (homes, apartments, B&Bs)

• Underfloor heating (low-temp circuits)

• Pools & spas (extend the swim season)

• Offices, gyms, salons (light commercial)

Key specs (quick view)

• Capacity: 300 L

• Type: Solar air-source heat pump (hybrid AC/DC)

• Efficiency: COP up to ~4.2

• Power modes: Solar direct (day), Grid assist (night/low sun)

• Controls: App (Wi-Fi/Bluetooth), timers, weather compensation, AC limiter

• Safety: PV surge protection, residual current monitoring, over-current/over-voltage

What’s in the box

• Deye 300 L Solar Air-Source Water Heater (AC/DC)

• Integrated solar control electronics

• User manual & quick-start guide

Installation notes (recommend)

• Professional install by qualified plumber/electrician.

• Site for good airflow and PV exposure; include isolators and safety valves per local regs.

• Confirm PV string sizing and cable protection to spec.

Mini-FAQ

Q: Does it work during load-shedding?
A: Yes. It can run off PV during the day; at night/low sun it uses limited AC as backup.

Q: Do I need an inverter or batteries?
A: No. It’s designed to connect directly to solar PV and can use grid AC when needed.

Q: Is 300 L right for me?
A: Choose 300 L for 4–7+ users, guest suites, or light commercial. For 2–4 users, consider the 200 L model.