fire sprinkler cost water

How much does Automist home fire sprinkler cost?

It is difficult to accurately quote for a residential sprinkler system. The only reliable way is to send layout drawings to your chosen installer and they can produce an accurate estimate. Verification may even require a site visit.

In a small home after a loft conversion which only requires a partial sprinkler system to cover a small open plan area (25 sqm), the cost of a traditional sprinkler system including a pump and tank costs approximately £2,500, whereas the complete Automist system costs less at approximately £2,000.

*Prices are guidelines per home (retrofit) and depend on the specific products used, economies of scale, and project complexity.

Things to be aware of when not buying Automist and opting for traditional sprinklers or watermist systems

Ensure that your quote covers all the costs required to complete your installation. Often the provision of an adequate water main is your responsibility, unless otherwise quoted. There can be expensive additional costs when installing sprinkler systems if your home can not provide the flow required to run your system.

In many cases it will be your responsibility to consult with the Local Water Authority and establish whether your system can be installed directly. A typical traditional sprinkler system requires a minimum of 100 lpm at 2 bar working pressure. If your mains water is not sufficient you would have two options, either to upgrade via contacting your Local Water Authority, or installing a tank and pump.

Minimum Guaranteed UK Supply by the Office of Water Services (OFWAT)

Automist's Water Usage

Traditional Sprinkler's Water Usage

9 litres per minute

5.6 litres per minute 

60 litres per minute (per nozzle)

1 bar pressure

1 bar pressure

approx. 2 bar pressure


Questions to ask:

  • Has the water supply been designed to cater for a sprinkler system at the planning stage?
  • Who fits the bill if there is a false activation? What's the likely damage?
  • Can the system be connected to the mains water supply? Will the system require a storage tank or priority valve?
  • Is there space in the loft for a large quantity of water and a pump?
  • If not, can the tank be located on the ground floor, basement or garage?
  • Are the ceiling voids accessible?
  • What are the costs to provide adequate power for your system?

Why are people choosing Automist?

Automist was designed with retrofit in mind, so it can often be more cost-effective than traditional sprinklers. It does not require a tank, and in the vast majority of installations does not require an upgrade to the water feed to supply its pump which draws only 5.6 litres per minute flow (standard domestic supply). Easy installation is also, in part, due to the use of flexible high-pressure hose which do not need to go through the ceiling because of the position of the spray heads. 


A partial system (where coverage is not required in every room) can sometimes satisfy your Building Control Officer (BCO) and they can drastically affect the price of your quote. It is often the only requirement in the case of a loft conversion. Check out some of the many examples where homeowners decided to go with Automist. If your Installation is price sensitive make sure you get quotes from numerous installers.


  Looking for a quotation, please contact your nearest Authorised Installer