--- title: "PV Solar Water Heater — Photovoltaic | GESPA Energy" description: "PV water heater that heats water directly with solar panels. Smart GF-20 controller, automatic grid backup on cloudy days, 60–200 L enamel tank." canonical: https://www.gespaenerji.com/en/su-isitici.html lang: en dateModified: 2026-10-24 publisher: "GESPA Enerji" --- [Home](https://www.gespaenerji.com/en/) / Solar Water Heater 🔆 New Product # Free Hot Water from the Sun The comfort of an electric boiler, the economy of solar. The photovoltaic panel heats water directly with the sun; on cloudy days the system switches to grid backup automatically — hot water 365 days a year. Contact us for current pricing [see models →](#modeller) 💧 60–200 L capacity ↔️ Horizontal & vertical models 🛡️ Enamel inner tank 🏅 TÜV • CE • UL • UN38.3 🔆 New-Generation Product ## Free hot water from the sun Monocrystalline solar panels heat the water with solar energy; the smart GF-20 controller manages temperature. On sunless days the system automatically switches to grid (AC) heating — the comfort of a boiler, the economy of the sun. - Free heating with solar energy - Automatic grid (AC) backup on cloudy days - Enamel inner tank — durability and hygiene - Freeze, overheat and dry-run protection [Get a Quote](https://www.gespaenerji.com/en/iletisim.html) Product Gallery ## Inspect the tank from every angle Horizontal body with enamel inner tank, touch control panel and standard 1/2" water connections. Tap a thumbnail to change the angle, click the image to enlarge. ![Horizontal PV water heater — front view, connection ports and control panel](https://www.gespaenerji.com/assets/img/products/heater/tank-1.webp) Front view — water connections and touch control panel ![Touch control panel close-up](https://www.gespaenerji.com/assets/img/products/heater/detay-kontrol.webp) ### Touch control panel Temperature setting, heating mode and time schedule from a single panel. Error codes appear on the display. ![Hot water outlet, cold water inlet and drain port](https://www.gespaenerji.com/assets/img/products/heater/detay-portlar.webp) ### Standard water connections Hot water outlet, cold water inlet and drain port are labelled; the relief valve hose comes fitted. ![Heating element and anode service cover](https://www.gespaenerji.com/assets/img/products/heater/detay-flans.webp) ### Service cover The heating element and magnesium anode come out through this cover — no need to take the tank down for servicing. How Does It Work? ## Free hot water in 3 steps The photovoltaic panel feeds electricity directly to the water heater — simple, safe and efficient. - 1 ### Photovoltaic Module The monocrystalline panel turns sunlight into electricity. - 2 ### Water Heater Tank The enamel inner tank keeps heat in with polyurethane insulation. - 3 ### Hot Water Use Bathroom, kitchen — uninterrupted hot water for the whole home. **☁️ What happens on cloudy / rainy days?** The system automatically switches to grid power — hot water all year round. The smart heating strategy uses free solar on sunny days and cheap off-peak electricity at night. 8 Major Advantages ## Why this system? 🏠 ### Central Hot Water One system for the whole home. 💸 ### Free Hot Water Zero cost with sunlight. 🧠 ### Smart Heating Tariff-aware automatic strategy. 📅 ### Hot Water Every Day Uninterrupted use 365 days. 🔒 ### Safe No electricity-water contact; PV heating. 💚 ### Healthy Enamel tank + magnesium anode. 🛋️ ### Comfortable Stable temperature, unaffected by seasons. 🌿 ### Low Carbon Eco-friendly clean energy. ⚙️ Smart Control ## GF-20 Photovoltaic Controller A smart panel managing water temperature, time and heating mode. ±1°C measurement and control accuracy for comfort and safety. - PV + AC hybrid heating management - Programmable smart mode - Instant (rapid) heating - 0–90°C measurement · 35–75°C setting - Freeze & dry-run protection - Overheat protection (E5) Model Options ## Choose your model Models with enamel inner tanks from 60 L to 200 L for your family's hot water needs. Contact us for current pricing and stock; the binding quote follows a free site survey. ↔️ ### Horizontal Water Heater 60L • 80L • 100L Ideal for compact spaces and balcony installations. ↕️ ### Vertical Water Heater 120L • 150L • 200L For large families and high consumption. ### How many litres do I need? - 1–2 people 60–80 L Single person, couple or holiday-home use - 3–4 people 100–120 L 2–3 showers a day plus kitchen use - 5+ people 150–200 L Large family, back-to-back showers If you have a bathtub, more than one bathroom or a guesthouse/apart use, pick the next capacity up. If unsure, let's decide together during the free survey. | Capacity | Type | PV power (DC) | Dimension (mm) | AC power (kW) | Inner tank | Price | | --- | --- | --- | --- | --- | --- | --- | | 60 L | Yatay | 550 W | 430 × 745 | 1,5 – 2 kW | Enamel | Request a quote | | 80 L | Yatay | 600 W | 430 × 893 | 1,5 – 2 kW | Enamel | Request a quote | | 100 L | Yatay | 700 W | 470 × 1140 | 2 – 2,5 kW | Enamel | Request a quote | | 120 L | Dikey | 900 W | 470 × 1251 | 2 – 2,5 kW | Enamel | Request a quote | | 150 L | Dikey | 1200 W | 480 × 1380 | 2,5 kW | Enamel | Request a quote | | 200 L | Dikey | — | — | — | Enamel | Request a quote | Voltage: 110–240 V · Control: button / touch / mechanical · Water flow is unaffected by seasons. ✔ TÜV ✔ CE ✔ UL ✔ UN38.3 IEC 61000 IEC 62477 IEC 62619 IEC 63056 [Get a quote for this product](https://www.gespaenerji.com/en/iletisim.html) What's in the system? ## Turnkey, complete set The tank alone is not a system. Every component needed to hand it over fully working is included in the quote. 🛢️ ### Body with enamel inner tank Water heater with polyurethane insulation, magnesium anode and heating element — in the capacity you choose. 🔆 ### Monocrystalline PV panel The photovoltaic module feeding the tank directly; from 550 W to 1200 W depending on capacity. 🎛️ ### GF-20 control unit Smart control panel managing PV and grid heating, together with the temperature sensor. 🔩 ### Mounting structure and hardware Panel feet, tank bracket/foot fittings, bolts and anchors. 🔌 ### DC cable and MC4 Solar cable and connectors between the panel and the control unit. 🚿 ### Plumbing connection Pressure relief valve, flexible connectors and the labour to tie into your existing plumbing. **📦 Delivery and installation** In Antalya, Manavgat, Side, Serik and Alanya installation is done by our team. To other provinces the product is shipped by courier; installation can be done by your local fitter, with a manual and phone support provided. Installation ## From survey to hot water in 4 steps A typical residential installation is completed within the same day. ![Wiring diagram: the solar panel on the roof connects to the terminal of the water heater in the bathroom with a two-core DC cable; the terminal carries PV plus, PV minus, AC live and neutral, and the tank has a hot water outlet and a cold water inlet.](https://www.gespaenerji.com/assets/img/products/heater/baglanti-semasi.webp) The panel sits on the roof or balcony and the tank indoors; only a two-core DC cable runs between them — water never goes up to the panel, so there is no freezing or scaling risk. Click the image to enlarge. - 1 ### Free site survey Capacity is set according to roof/terrace orientation, existing plumbing and household needs. - 2 ### Tank and panel mounting The tank is fixed to a load-bearing surface and the panel is set at the right angle facing a shade-free direction. - 3 ### Water and DC connection Cold water inlet, hot water outlet and relief valve are connected; the panel cable is run to the control unit. - 4 ### Commissioning The tank is filled, leak and heating tests are run, and operation is explained. 🛡️ Tank Technology ## The secret of healthy hot water A corrosion- and scale-resistant inner tank; long life with an extended, thickened magnesium anode. - Baosteel special enamel steel plate - High-strength adhesive layer - Blue Gold Steel enamel underglaze - Enamel reinforcement layer - Anti-fouling, no scaling - Antibacterial inner surface - High-density polyurethane insulation - Long life with magnesium anode 🏅 Quality & Certificates ## Manufactured to international standards TÜV, CE, UL and UN38.3 certified; produced on robotic lines to IEC compliance standards. High-efficiency monocrystalline PV panel technology. - Robotic production lines - Personalized project design - High-efficiency monocrystalline panel - Certified quality processes Why GESPA? ## With you before and after the purchase 📍 ### Free on-site survey The best capacity and mounting plan for your home. 🔧 ### Professional installation Experienced team, safe and fast installation. 🤝 ### After-sales support Local service assurance in the Antalya region. 🔗 ### End-to-end solution Panel + water heater + storage from one hand. Gallery ## Shots from the field Real use at home, in the bathroom and on the roof; images from the production line. ![GESPA PV güneş su ısıtıcı tankı ve fotovoltaik panel](https://www.gespaenerji.com/assets/img/products/pv-su-isitici-urun.webp) ![Modern evde PV su ısıtıcı uygulaması](https://www.gespaenerji.com/assets/img/products/pv-su-isitici-ev.webp) ![Banyoda duvara monte GESPA PV güneş su ısıtıcı](https://www.gespaenerji.com/assets/img/products/pv-su-isitici-banyo.webp) ![Robotik üretim hattı](https://www.gespaenerji.com/assets/img/products/pv-su-isitici-uretim.webp) ![Su ısıtıcı üretim hattı](https://www.gespaenerji.com/assets/img/products/pv-su-isitici-fabrika.webp) ![Çatıya kurulu fotovoltaik paneller](https://www.gespaenerji.com/assets/img/products/pv-su-isitici-cati.webp) Maintenance & Warranty ## What do you need to do after installation? With no moving parts, a photovoltaic water heater is a low-maintenance system. 🧪 ### Magnesium anode Checked every 2–4 years depending on water hardness and replaced if needed; it protects the tank from corrosion. 🧼 ### Panel cleaning Washing off the dust once or twice a year is enough. A dirty panel lowers efficiency. 🛟 ### Pressure relief valve Once a year it is drained by hand to check it works — important for pressure safety. 🤝 ### Warranty and service The product warranty follows the manufacturer's terms; in the Antalya region we provide the service ourselves. Frequently Asked Questions ## About the water heater ### Is there hot water when there's no sun? Yes. On cloudy/rainy days or at night, the system automatically switches to grid (AC) heating based on water temperature, ensuring hot water year-round. ### Which capacity should I choose? Models from 60–200 L are available by household size. 60–80 L for 1–2 people, 100–120 L for 3–4, 150–200 L for 5+. ### What is the difference between horizontal and vertical models? Horizontal models (60/80/100 L) suit compact spaces and balconies; vertical models (120/150/200 L) are ideal for large families and high consumption. ### Does it save on the electricity bill? On sunny days heating is largely free, saving significantly versus a traditional electric boiler. The exact figure depends on usage and region. ### What about installation and warranty? Roof/terrace integrated installation is done by our team. Enamel inner tank and A-brand equipment ensure long life; details are confirmed during a free survey. ### How is it different from an evacuated-tube collector system? In evacuated-tube systems the water circulates inside the tubes, bringing risks of scaling, freezing and tube breakage. In a photovoltaic system the panel only generates electricity and water never enters it — the plumbing is simple, there is no freezing risk in winter, and the panel can go on the roof while the tank stays indoors. ### Does it work in winter and in frost? Yes. The water is inside the insulated tank, not in the panel, and the control unit has freeze protection. On days when the sun isn't enough, grid support kicks in. ### Can it replace my existing electric boiler? Usually yes. Connection dimensions are standard and the existing hot/cold water lines can be used. The mounting surface must carry the filled weight and a shade-free spot is needed for the panel — we check both during the survey. ### Is maintenance difficult, what do I have to do? There are no moving parts. Dusting the panel once or twice a year, checking the relief valve annually and inspecting the magnesium anode every 2–4 years depending on water hardness is enough. ## Let's choose the right model for your home together Contact us for a free survey and a transparent quote. [Get a Quote](https://www.gespaenerji.com/en/iletisim.html) --- Kaynak sayfa: https://www.gespaenerji.com/en/su-isitici.html · GESPA Enerji · 0543 743 42 09 · info@gespaenerji.com · Örnek Mah. 1551 Sok. Yaşar Apt. No:10 İç Kapı No: Z01, Manavgat / Antalya Tüm sayfalar ve ürünler: https://www.gespaenerji.com/llms.txt · Ayrıntı: https://www.gespaenerji.com/llms-full.txt