Osmio HT+ · Home & Office
Reverse osmosis drinking water, without a storage tank
The Osmio HT+ Home & Office is a tankless, under-sink reverse osmosis system. It filters water as you draw it from a dedicated drinking tap, leaving your kitchen mixer free for everyday use.
- About 1 L/min with feed water within spec
- Five stages, including remineralisation
- Digital TDS display and filter reminders
- Stainless steel drinking tap included
Living with the Osmio HT+
What to expect from the Home & Office model
Does it remineralise the water?
Yes. The Home & Office model adds calcium and magnesium back after reverse osmosis through its included active ceramic and carbon post-filter. Osmio describes this cartridge as antibacterial. Osmio’s product Q&A gives an approximate figure of 50 ppm for the added minerals. The figure is a guide.
When will I hear the pump?
You can hear the pump when you open the drinking tap. The unit is generally quiet between uses, although it can run an automatic membrane flush while idle.
What is the difference between Home & Office and Lab & Dental?
The difference is the final filter. Home & Office adds calcium and magnesium back to the drinking water. Lab & Dental uses a deionising resin cartridge to remove remaining dissolved ions.
Before you order
Plan the space under your sink
The freestanding unit measures 480 mm high × 360 mm wide × 240 mm deep. Check the cabinet opening as well as the usable space inside. Leave extra room for the tubing and to remove the filter housings during servicing.
- Cold drinking-water feed at 2–6 bar standing pressure
- Suitable waste connection
- Accessible mains socket
- Clearance for filter changes
Ask your installer to check standing pressure and the drain route. Osmio recommends a pressure-reducing valve set to around 4 bar; the feed must not exceed 6 bar. Use the installation manual for the exact connections.
Open Osmio’s installation manualDedicated drinking-water outlet
Will the tap fit beside your sink?
The single-dispensing tap is for RO water only, not hot and cold mixing. Use the drawing to check how far the spout reaches over the bowl and whether there’s clearance below a shelf or an opening window.
- Overall height
- 290 mm
- Outlet height
- 200 mm
- Spout reach
- 150 mm
- Below-surface projection shown
- 85 mm
Check before drilling: Osmio specifies a 12 mm mounting hole. The 85 mm shown is the tap’s projection below the mounting surface, not the maximum worktop thickness. Have your installer check the cut-out and clearance, especially on stone worktops.
System details
Osmio HT+ specifications
Three pre-filters protect the RO membrane. The membrane reduces dissolved solids, sending the concentrated reject water to the drain. The final filter adds calcium and magnesium back to the drinking water.
Five filtration stages
- 1. Sediment
- 5-micron pre-filter for suspended particles.
- 2. GAC carbon
- Granular activated carbon reduces chlorine.
- 3. CTO carbon block
- Further reduces chlorine and fine particles.
- 4. RO membrane
- 400 GPD membrane rating; see the separate system output figure.
- 5. Remineralising filter
- Active ceramic and carbon post-filter for the Home & Office model.
Filter changes: Replace the three pre-filters and the final filter every 6 months. Osmio’s filter schedule recommends 12–18 months for the RO membrane; replace it sooner if performance declines.
- Model
- Osmio HT+ Home & Office Direct Flow Reverse Osmosis System
- Rated system output
- 60 L/h (about 1 L/min) with feed water within Osmio’s specification.
- Unit size and weight
- 480 × 360 × 240 mm (H × W × D); 12 kg.
- Standing inlet pressure
- 2–6 bar.
- Cold feed
- 4–40 °C; ½-inch NPT feed connection.
- Key feed-water limits
- Potable water; pH 6.5–8.5, TDS below 1,000 ppm and hardness below 500 ppm as CaCO₃. See the manual for the full limits.
- Power
- 100–240 V AC, 50–60 Hz.
- Controls
- Total dissolved solids (TDS) display, filter-life reminders, automatic membrane flushing and two pressure gauges.
- Tap and fittings
- 304 stainless steel drinking-water tap and installation kit supplied.
- Manufacturer warranty
- 2-year limited return-to-base warranty, subject to Osmio’s feed-water, installation and servicing conditions.
Common questions
Osmio HT+ Home & Office FAQs
What does direct flow mean?
The system filters water as you open the drinking tap, without a storage tank. Osmio lists about 1 litre per minute when the incoming water meets its specifications. The flow at your tap depends on the supply conditions and filter condition.
Can it run continuously in a busy office?
No. It is designed for on-demand use. For higher-volume use, Osmio recommends running it for no more than 30 minutes in any hour.
Does it need electricity and a drain?
Yes. The pump and controller need mains power, and the concentrated water separated by the RO membrane needs a suitable waste connection.
Does it replace my existing kitchen mixer?
No. The dedicated drinking tap serves filtered water only. Your main kitchen tap continues to supply hot and cold water for washing up and other everyday uses.
Will this soften all the water in the property?
No. Reverse osmosis reduces dissolved minerals in the water dispensed at the RO tap. It does not treat the rest of the plumbing or replace a whole-property water softener.
Can I use it on a private water supply?
Only if the feed has been treated and verified as safe to drink, and it meets Osmio’s feed-water limits. Share a recent water analysis with us before ordering. Do not rely on the unit alone to make untreated water drinkable.
How do I choose the right replacement filters?
Check the model and cartridge references before ordering. If you’re unsure, send a photo of the unit label and existing filters so we can check which set is correct.
How much cupboard space does it need, and what does installation involve?
The unit is 48 cm high, 36 cm wide and 24 cm deep. Check the cabinet opening and leave room for tubing and filter changes. Installation involves connecting the cold feed, drain and dedicated tap, with a mains socket nearby.
Regal Flow · Friendly expert support
Not sure if it will fit?
Send us a photo of the cupboard and pipework, the usable space under the sink and your incoming pressure if known. We’ll help you check what needs to be in place before you order.