Halcyan H2o9 ‘Favourite’ Whole House Water Conditioner

The simple, sustainable, and long-term solution to limescale

Supplied by our trusted partner Halcyan, the H2o9 is the go-to solution for over 95% of UK homes—treating all the water entering your property and protecting every tap, appliance, and pipe from damaging limescale.

💧 Product Overview

The H2o9 is Halcyan’s most popular whole-house water conditioner—and for good reason. Once installed on your mains water pipe, it transforms how minerals behave in hard water, drastically reducing limescale buildup and protecting your home’s plumbing and appliances, all without the need for salt, chemicals, or power.

At The Tap Specialist, we’re proud to partner with Halcyan to bring you this premium, planet-friendly, and low-hassle solution to hard water problems.

🔧 Choose Connector Size

Not sure which size you need? Halcyan recommend choosing 22mm—your installer can always use reducers if necessary.

Connector Options:

• 15mm
• 22mm (Recommended)

✅ Why Our Customers Choose Halcyan

• Designed for UK hard water homes
• Maintenance-free for over 30 years
• No electricity, chemicals, or filters required
• Keeps minerals in your water but stops limescale forming
• Helps save £330–£500/year on energy and cleaning products
• Kinder to skin, hair and appliances
• Compact, easy to install, and environmentally friendly

🌍 Ideal for:

• Households in hard water areas
• People looking to reduce their carbon footprint
• Customers wanting to avoid bulky salt-based softeners
• Renovators, landlords and new-build projects
• Anyone wanting a long-term, zero-maintenance solution
• Eco-conscious homeowners looking for better water quality

❌ Not suitable if:

• You require 100% softened water (like a salt softener provides)
• You’re sensitive to a light powdery residue on surfaces

Which Halcyan Is Right For Me?

For 95% of households the H2o9 model is perfect, we recommend watching this video to confirm your size. 

🧰 Installation Details

The H2o9 is straightforward to install. A qualified plumber can typically fit it in 30–60 minutes on standard pipework. If you’re DIY-savvy, installation is also possible without a professional.

🔗 View the Halcyan Installation Guide & video below

🌟 Key Benefits

💷 Saves Money:

• Lower energy bills (average saving: £330–£500/year)
• Reduced use of cleaning products, descalers and repairs

🧽 Cleaner Homes:

• Limescale is treated and leaves only a soft, dry powder
• Easier-to-clean surfaces and fixtures

🔧 Protects Your Home:

• Helps extend the life of boilers, taps, showers and appliances

💧 Healthier Water:

• Keeps essential minerals intact
• Safe to drink from every tap

🌱 Environmentally Friendly:

• No waste, salt or chemicals
• Long-lasting (30+ years), with a significantly lower carbon footprint
• Helps save up to 0.6 tonnes CO₂e per year

🔍 Why Halcyan Over Other Systems?

While the H2o9 might look like other systems on the market, Halcyan’s patented technology sets it apart. It delivers:

• A longer-lasting effect on mineral behaviour (2–3 weeks vs 48 hrs)
• A true 'fit and forget' installation
• No directional flow requirement
• A 30-year product lifespan and warranty
• Proven performance backed by independent testing

Peace of Mind Returns

Returns:
✅ Full refund available if returned within 14 days, unused and in original condition. Installation must not have taken place for a return to be accepted.