Help & support / Single vs twin sewage pump systems
Single vs twin sewage pump systems
The number of pumps affects resilience as well as the layout of a sewage pumping station. Start by considering what happens to the property if its only pump stops.
When a single pump can be suitable
A single pump can work well for smaller installations such as an extra bathroom or an outbuilding with a toilet, subject to the required duty and capacity. It has one pump responsible for discharge. If that pump stops, wastewater can still enter the chamber, so an alarm and a plan for responding to a fault are worth considering.
Why choose a twin system?
A twin station contains two pumps. Depending on its controls, the system may alternate the pumps, operate one as a standby or bring both into operation when required. A second pump provides resilience if one fails, which can be valuable when the station serves the whole house. Confirm the supplied control arrangement rather than assuming every twin system behaves identically.
What twin pumps do not guarantee
Two pumps do not make a station immune to problems. A shared power failure, blocked discharge pipe or unsuitable installation can affect the system. Twin pumps do not replace regular care, and a battery-backed alarm does not supply operating power to either pump.
Our available dual-pump upgrade
The 1,100, 1,400, 1,700 and 2,000 litre station pages offer a Dual Pump option for an additional £999. Select the option on the product page to update the order total. Check the chamber dimensions and selected lift option as well as the number of pumps.
Questions to resolve before ordering
- What would a loss of drainage mean for the property?
- What control arrangement is supplied, and how is a fault indicated?
- Is there safe access for inspection and pump removal?
- How will a high-level warning be noticed and acted on?
Compare our sewage pumping stations or ask us about your single or twin pump requirements.