Airlock Clearing, Shower Booster Pumps & Heating Pumps in Sligo
After an Uisce Éireann water mains outage, a drained attic tank, or a cylinder repair, pockets of air trapped in low-pressure gravity pipes can completely stop water reaching your hot taps, electric shower, or upstairs radiators. We clear plumbing and heating airlocks and repair or replace faulty shower and heating pumps across Sligo.
Airlock & Pump Callout Prices in Sligo
Typical prices for resolving water pressure, airlock, and pump faults in Sligo homes:
| Pump / Airlock Job | Typical Price (incl. VAT) | What We Do |
|---|---|---|
| Clear Airlocked Hot Water Taps / Gravity Tank Feed | €95 – €145 | Use controlled mains back-pressure / wet-vac extraction to purge trapped air pockets |
| Bleed & Balance Airlocked Central Heating Radiators | €110 – €165 | Purge air from high-point pipes, bleed all rads, balance lockshield valves & re-pressurise |
| Replace Central Heating Circulating Pump (6m Head) | €185 – €275 | Isolate pump valves, fit new A-rated Grundfos/Wilo 130mm pump, bleed system |
| Repair or Replace Twin-Impeller Shower Pump (Hot Press) | €140 – €240 (labour + parts) | Test reed flow switches/PCB/capacitor or fit new brass/regenerative booster pump |
Why Sligo Gravity Hot Water Systems Airlock After a Mains Shut-Off
In most Irish houses built before 2012, the cold kitchen tap is on high mains pressure (2 to 4 bar), while the hot water cylinder and bathroom taps are fed by gravity from the attic tank (only 0.2 to 0.4 bar of head pressure). If the attic ballcock sticks or a mains outage empties the tank, air enters the 22mm drop pipe from the attic. When the tank refills, 0.2 bar of water pressure isn't strong enough to push the buoyant air bubble down around horizontal pipe bends under the floorboards — leaving your hot tapsbone dry until purged professionally.
Frequently Asked Questions: Airlocks & Shower Pumps
Why is my Triton T90SR electric shower humming with the 'Low Pressure' light on?
The Triton T90SR is a tank-fed pumped electric shower fed from your attic tank. If the attic tank ran low or the inline gauze filter inside the shower inlet is blocked with grit, an airlock forms in the feed pipe. Do not run the shower dry — bleeding the inlet and cleaning the gauze filter restores flow in minutes.
Why is my hot-press shower booster pump pulsing on and off by itself in the middle of the night?
When a positive/negative head booster pump pulses for 2 seconds every hour, pressure is slowly dropping on the outlet side — usually because a toilet fill valve, mixer tap cartridge, or non-return check valve is weeping slightly.
Half my radiators are roasting hot and the other half are ice cold — is it the pump?
If downstairs radiators are cold while upstairs radiators are hot, the circulating pump is weak or failing. If one single radiator is cold at the top and warm at the bottom, it simply needs bleeding; if it is cold at the bottom with sludge, the lockshield valves need balancing or flushing.
Do you fit brass-bodied Stuart Turner Monsoon pumps in Sligo?
Yes — we supply, repair, and fit Stuart Turner Monsoon, Techflo, and Salamander twin-impeller and single-impeller pumps.
Related Services & Guides
- 24/7 Burst Pipe & Ceiling Leak Repair in Sligo — Fast isolation & permanent pipe repair
- Emergency Heating & Oil Boiler Breakdown Callouts in Sligo — Burner lockouts, pumps & zone valves
- Leaking Hot Water Cylinder & Immersion Repairs in Sligo — Hot press leaks, gate valves & elements
- Emergency Blocked Toilet, Sink & Internal Drain Unblocking in Sligo — €95–€165 fast mechanical clearance
- Emergency Plumber Callout Cost in Sligo (2026 Transparent Rates) — Daytime, evening & weekend rate card
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