Mains-Fed Water Coolers – Guide & Benefits
Upgrade your workplace or home with a high-quality water cooler directly connected to the mains and enjoy filtered drinking water with no bottles and no hassle.
A mains-fed water cooler with filter delivers clear, great-tasting water straight from the tap, using multi-stage filtration for excellent taste and reliable protection for your staff, customers or family – ideal when your tap water is already drinkable but needs an extra level of filtration.
Choose a professional Oasis solution and get 5-star water quality with one of the lowest running costs on the market. If the water in your area is considered non-drinkable or extremely hard and loaded with contaminants, then a mains-fed cooler with reverse osmosis (RO) may be more suitable.
Mains-fed water coolers with filter and direct connection to the mains, without bottles, can be installed in all kinds of spaces – offices, clinics, schools or homes – offering absolute comfort with easy access to cold and hot water throughout the day. Every Oasis mains-fed water cooler is offered at highly competitive prices, with low maintenance cost and proven reliability.
The Oasis mains-fed water cooler with filter combines modern design with essential certifications such as CE, RoHS, TÜV and CB, ensuring safe operation and high hygiene standards for your drinking water. By choosing the right filter set, you can tailor the filtration level to your local water conditions. However, if the water is heavily contaminated or not suitable for drinking, we recommend a mains-fed unit with reverse osmosis (RO) for maximum purification.
Why Choose an Oasis Mains-Fed Water Cooler
- No bottled water – the mains-fed cooler connects directly to your water supply.
- Multi-stage filtration – removes sediment, rust, chlorine and unpleasant odours from tap water.
- Ideal when tap water is drinkable but you want better taste and additional protection.
- Stable, low running cost – no more bottle orders, only periodic filter replacement.
- Perfect for professional use – language schools, medical practices, offices, salons, studios and more.
- Suitable for home use – clean filtered water straight from the tap with a compact footprint.
- Cold & hot water – ideal for summer and winter, for drinking water, teas and instant coffee.
- Low energy consumption – efficient compressor designed for continuous operation and strong cooling.
- Certified quality: CE, TÜV, RoHS, CB – guaranteed safety and performance.
- Full service & spare parts – complete technical support from trained Oasis partners.
- For smaller spaces we also offer a countertop mains-fed cooler with filter, ideal for kitchen counters, small offices or reception areas.
Filter or Reverse Osmosis (RO);
| Feature | Cooler with Filter | Cooler with RO |
| Best suited for | Drinkable or moderate tap water | Non-drinkable / very hard water |
| Limescale reduction | ✔ Medium | ✔✔✔ Very high (up to 99.8%) |
| Removal of heavy metals | ✔ Partial | ✔✔✔ Extensive |
| Water taste | Good | Crystal clear – premium |
Frequently Asked Questions about Mains-Fed Water Coolers (FAQ)
What is a mains-fed water cooler with filter; +
What is the difference between a mains-fed cooler and a bottled water cooler; +
How often do I need to change the filters; +
Do I need a separate water line for a mains-fed cooler; +
Are mains-fed water coolers suitable for offices and other professional spaces; +
What is the typical maintenance cost; +
Do you provide installation and after-sales service; +
Oasis Certifications for Mains-Fed Water Coolers
- CE – European conformity marking for safety and compliance.
- TÜV – Independent testing and quality verification.
- RoHS – Restriction of hazardous substances in electronic components.
- CB – International electrical safety certification.
- Water Quality – Certifications ensuring the quality of treated drinking water.
With an Oasis mains-fed water cooler with filter you enjoy high-quality filtered water, backed by full technical support and internationally recognised certifications.
Installation, Spare Parts & Service for Mains-Fed Water Coolers
Beyond sales, Oasis provides complete installation, spare parts for water coolers and maintenance services for mains-fed systems. From filters and taps to thermostats and electronic components, we make sure your mains-fed water cooler with filter operates smoothly for many years.
Solutions for All Types of Workplaces
A mains-fed water cooler with filter is the ideal choice for modern workplaces that want high-quality water without plastic bottles. We work with offices, industrial facilities, schools, medical practices, hotels and gyms, tailoring the setup to match each site's actual consumption and usage patterns.
Nationwide Coverage & Support across Greece
We provide regular service in all major Greek cities (Athens, Thessaloniki, Patra, Heraklion, Larisa, Volos, Ioannina, Trikala, Chalkida, Serres, Alexandroupoli, Xanthi, Katerini, Agrinio, Kalamata, Kavala, Lamia, Komotini and Drama), as well as many Greek islands (Crete, Lesvos, Corfu, Mykonos, Santorini, Paros and Naxos). For other locations, we can arrange shipping and installation in coordination with our technical team.
Customer Reviews for Oasis Mains-Fed Water Coolers
- ⭐️⭐️⭐️⭐️⭐️ “We installed an Oasis mains-fed cooler in our offices – no more bottles, just fresh filtered water from the tap.” – Service Company
- ⭐️⭐️⭐️⭐️⭐️ “Excellent water quality, quiet operation and very fast support from Oasis.” – Medical Centre
- ⭐️⭐️⭐️⭐️ “Great value for our language school, students always have cold water available.” – Private Institute
OASIS | Water Coolers & Water Filters, the quality you deserve!
Mains-fed water coolers connect directly to the water supply and are available with or without filtration, depending on the needs of each space. Here you will find all reliable OASIS mains-fed models, suitable for home, office, or professional use.
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