HomeService AreasLiss • Boiler Repair
Embassy Gas • Liss (GU33)

Boiler Repair in Liss

If your boiler has stopped working, keeps cutting out, or you’ve lost heating/hot water, we’ll get to the actual cause quickly and repair it properly. Local Gas Safe engineers covering Liss with honest advice, practical fixes, and no pushy sales.

Gas Safe Engineers No Guesswork Fix + Prevent Advice GU33 Coverage

Repairs in Liss: what we commonly see

Liss and the surrounding villages have a real mix of property ages — from period homes to newer builds — and that shows up in the type of boiler problems we get called to. We regularly cover Hill Brow, Liss Forest, Rake and nearby routes towards Petersfield, Greatham and Liphook.

Typical local issues include slow pressure loss (often linked to PRV/expansion behaviour), combi hot water going warm/cold (diverters and plate heat exchangers), and noisy systems where older pipework and radiators have developed sludge restrictions over time. In colder spells, condensate freezing can also cause sudden lockouts if the run is exposed.

Most reported symptoms
Lockouts, pressure dropping, heating cutting in/out, kettling, radiators patchy or slow to warm.
Where we start
Fault codes, pressure trend checks, circulation health, condensate route, and controls demand.

Before we arrive (safe basics)

Controls + demand
Make sure programmer/thermostat is calling for heat. Note if the fault is heating-only or hot-water-only.
Pressure reading
If the gauge is low, it may lock out. Don’t top up unless you’re confident and it’s safe to do so.
Any water leaks
Switch the boiler off and leave it off — water can damage electrics and PCBs quickly.
Frozen condensate
If it’s very cold and you have an external run, condensate freezing can stop the boiler firing.

Common boiler faults we fix in Liss

We work on combi, system and regular boilers. Once diagnosed, we’ll explain the failure and the cleanest, most sensible fix.

Pressure-related faults
Expansion vessel issues, PRV discharge, leaks, worn seals/valves.
Combi hot water faults
Diverter valve failures, scaled plate heat exchanger, flow sensors.
Ignition / lockouts
Ignition leads/electrodes, flame sensing, fan/APS faults, control issues.
Noises / kettling
Restricted flow, sludge/scale build-up, pump problems, blocked filters.

How our Liss repair visits run

You should never feel “in the dark” on a repair. We diagnose first, explain what’s going on, and only then move to the fix. If replacement is the smarter route, we’ll tell you plainly.

1) Diagnose
Operation tests, code interpretation, component checks and safety observations.
2) Explain options
What failed, why it likely failed, and the best-value repair route.
3) Repair / return if parts
Many fixes can be completed on the visit; parts jobs get a fast follow-up.
4) Prove & prevent
We test heating/hot water performance and advise on service timing and protection.
Boiler Repair in Liss – FAQs
Do you cover villages around Liss?
Yes — including Hill Brow, Liss Forest, Rake, and nearby areas towards Petersfield.
My boiler keeps losing pressure — is that common?
Yes. It’s usually a leak, PRV discharge, or an expansion vessel issue. We’ll test and confirm.
Can you sort combi hot water problems?
Absolutely — diverter and plate heat exchanger faults are common, especially where water is harder.
Can breakdown cover help reduce future repair costs?
It can — if you prefer predictable monthly cover, plans are available (subject to terms).

Embassy Gas

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