Basement & Sump Pumps

Basement & Sump Pump Installation, Servicing and Repairs

Practical help with basement drainage pumps, sump pumps, twin-pump systems, controls and high-level alarms for homes and residential properties.

Hampshire & SurreyLocal engineers
Homes & residentialBelow-ground protection
Clear adviceQuote before work
01420 561661Speak to AFS

Choose the right basement pump service

The correct next step depends on whether you need a new system, routine maintenance or urgent fault investigation.

AFS installs, services and repairs basement and sump pump systems across Hampshire, Surrey, West Sussex and nearby areas.

We assess the pump, sump chamber, floats or level sensors, non-return valves, controls, alarms and discharge route before recommending repair or replacement.

For offices, apartment blocks, plant rooms and managed buildings, use our dedicated commercial basement pump service.

For specialist pump work, our sister company Alton Pumps provides basement and cellar pump installation.

Installation and replacement

Pump selection, chamber and discharge checks, controls, alarms and backup options for new or ageing systems.

Servicing and maintenance

Checks of accessible pumps, floats, valves, controls and alarms, followed by clear findings and maintenance advice.

Fault finding and repairs

Investigation of alarms, continuous running, short cycling, unusual noise, poor discharge and pumps that will not start.

How basement pump work is arranged

Send the system details

Provide the full postcode, photographs, pump make and model, alarm symptoms, access notes and any service records.

Assess the likely requirement

We explain whether the enquiry appears to need servicing, fault investigation, repair, replacement or a site survey.

Quote or arrange attendance

The next step is agreed around the system, access, flood risk and evidence available.

Basement Pumps details

Basement pump installation and replacement

A basement pump installation must suit the incoming water, required flow and head, sump capacity, discharge route and consequences of failure. The assessment may also consider single or twin-pump arrangements, high-level alarms, controls, non-return valves and backup measures.

Replacement is not automatically the right answer for every fault. AFS first considers the accessible system and symptoms so a failed float, valve, control or blocked discharge is not mistaken for a failed pump.

Basement and sump pump servicing

Planned servicing helps identify wear, debris, sticking floats, alarm faults and poor pump operation before the system is needed during heavy rain or rising groundwater. The exact checks depend on the installation and safe access.

  • Pump operation and unusual noise
  • Float switches or level sensors
  • High-level alarms and accessible controls
  • Sump condition and visible debris
  • Non-return valves and accessible pipework
  • Discharge performance and operating symptoms

Read our guide to pump servicing intervals and the specific guide to sump pump lifespan.

Basement pump faults and warning signs

Arrange investigation if the pump will not start, runs continuously, short-cycles, becomes unusually noisy, trips the supply, triggers an alarm or cannot control the water level. If water is rising, avoid entering flooded areas where electrical equipment may be affected and explain the immediate conditions when contacting AFS.

Domestic and commercial basement systems are different

This page is focused on homes, cellars and residential basement drainage. Managed buildings, apartment blocks, offices, underground parking and plant rooms often need duty and standby arrangements, planned service reporting and coordination with a facilities team. Those enquiries should use our commercial basement pump page.

Information needed to assess your basement pump

Send the full postcode, property type, photographs of the pump, sump and control equipment, the make and model if visible, current symptoms, service history and access details. For a proposed installation, include drawings, expected water source and the intended discharge route where known.

Book basement or sump pump support

Call 01420 561661 or use the enquiry form. AFS will confirm coverage and explain whether the next step is servicing, fault investigation, repair, replacement or a site assessment.

Check we cover your area

We cover about 50 miles around Alton. Type the first part of your postcode and we will tell you the nearest town we cover, how far it is from Alton and whether it is inside our area.

The first part is enough, for example GU34. We use it only to work out the distance from Alton and we do not keep it.

Enter the first part of your postcode, for example GU34.

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Basement pump services in your area

Explore local basement pump installation, servicing and repair information for our principal coverage areas.

Request Basement Pumps advice or a quote

Send the details through and a member of the AFS team will come back to you.

Basement Pumps FAQs

What does a basement pump service include?

The scope depends on the system. It can include accessible pump, float, valve, control, alarm, sump and discharge checks, operational testing and clear follow-on recommendations.

How often should a basement or sump pump be serviced?

The interval depends on use, system design and the consequences of failure. A system protecting a finished basement or other high-risk area may need more frequent checks than a lightly used pump.

Do you cover commercial basement pump systems?

Yes. Offices, managed blocks, plant rooms and other commercial sites are covered by our separate commercial basement pump service so the correct page and engineer information can be used.

Which areas do you cover?

We mainly cover Hampshire, Surrey, West Sussex, Berkshire and nearby areas from our base near Alton and Liphook.

What should I send for a quote?

Send the full postcode, photographs of the pump, chamber and controls, the make and model if visible, current symptoms, access details and any previous service report.

Need help with basement pumps?

Send an enquiry or call the AFS team. We’ll confirm the practical next step and whether a site visit is needed.

Call 01420 561661