FREE delivery when you spend over £165

Instanta 3-5Ltr SureFlow Compact Boiler

Table Top Water Boiler

Where space is limited but standards are high

The SureFlow Compact CTS3 and CTS5 may be small, but they’re made to the same exacting specification as all Instanta’s boilers. These compact units have been specially designed to offer smaller catering establishments the ideal boiling water solution.

Features and Benefits

· Self diagnostics system
· Long-life incoloy element
· Well insulated for minimal heat loss & energy use
· Stainless steel drip tray included
· Complete with 1.75 metres of cable & 13 amp plug

Easy to install on a stable worktop.


Designed for direct connection to a potable cold water supply using the 1.5 metre (3/4” BSP) hose supplied. An isolating valve should be installed between the supply and the heater. Rear supply connection and choice of rear or front overflow is available (rear option requires kit not supplied).

To be connected to 230 volt supply with a suitable break capacity.

Mirror finished stainless steel case.
Stainless steel heating chamber.
Low voltage switching.
Two safety cut-outs.

WRAS approved.


Product Specifications

Product 3Ltr SureFlow Compact 5Ltr SureFlow Compact
Product Code CTS3 CTS5
Dimensions (HxWxD) 400 x 218 x 465mm 440 x 218 x 465mm
Tap Height 150mm 150mm
Rear Clearance 50mm 50mm
Weight 11.5kg 12kg
Power loading 2.25kW 3kW
Heat-up time 13mins 16mins
Recovery Rate 0.37Ltr 0.5Ltr
Stand by Power 0.066kW/h 0.066kW/h
Rapid Draw-Off 3 Litres 5 Litres
Litres Per Hour 20 Litres 30 Litres
Cups Per Hour 120 162

Machine Rental

All of our machines are available on a rental agreement.

Rental Includes:

  • Delivery & Installation
  • All callouts & Parts
  • 2x Sanitisations per year
  • 2x filter changes per year

£7.61 Per Week
1,000 Cups


Machine Purchase

Need Help Choosing The Right Filter Or Maintenance Options?

Check the FAQ's below and if you are still stuck please feel free to call our helpful sales team on: 0333 313 4345

  • Which filter should I choose for this machine?

    If the machine you are choosing dispenses cold or ambient water only, then you will need any of the Cold Water Filters.

    If the machine you are choosing dispenses hot & cold water, then you will need any of the Hot & Cold Water Filters that include a Scale Inhibitor.

    If the machine you are choosing have specific filters to choose from, these will be the only ones available in the dropdown box.

  • What is the difference between carbon block & GAC?

    While the GAC filters are adequate and have a slightly quicker throughput. A Carbon Block filter does a much more thorough job of filtering your water.

  • Why do I need a maintenance contract & what does FCSS/FSMA/B-FSMA stand for?

    Plumbed in Water Boilers, Water Coolers & Fountains need to have their filters changed and tanks sanitised twice per year. Water Boilers also need to be descaled. You can either buy the filters and cleaning equipment to do this your self or take out a service contract and have it done professionally.

    FCSS - Filter Change Service & Sanitisation
    Includes 2 filter changes & 2 sanitisations per year.

    FSMA - Full Service Maintenance Agreement
    Includes all callouts, parts & labour, 2 filter changes & 2 sanitisations per year.

    B-FSMA - Boiler Full Service Maintenance Agreement
    Includes all callouts, parts & labour, 1 descale, 2 filter changes & 2 sanitisations per year.