⬤ Same-day response · Glasgow Southside

No Heating or Hot Water in Glasgow? We fix it today.

Loss of heating or hot water is almost always a component fault, not a full breakdown. Accurate diagnosis means a faster, cheaper repair — most jobs resolved on the first visit.

No Heating or Hot Water?

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Symptom guide

What's your Situation?

The symptom often points to the fault. Here’s what each typically means.

Heating ✓ Hot water ✗

Likely a diverter valve fault — controls whether boiler heats radiators or taps. Component replacement in most cases.

Heating ✗ Hot water ✓

Could be a pump, motorised valve, or thermostat fault — the boiler is firing but heat isn't circulating.

Both heating ✗ + water ✗

Often boiler lockout, low pressure, or frozen condensate pipe — boiler has shut down entirely for a diagnosable reason.

Pressure below 1 bar

Boiler won't fire at low pressure. Can be re-pressurised, but recurring drops mean a leak needs finding.

Common causes

What's Causing it?

Accurate diagnosis first — the repair is faster and cheaper when we know exactly what’s failed.

Diverter Valve Failure
Faulty valve in combi boilers causes loss of hot water or heating independently. Straightforward component replacement in most cases.

Very Common

Low Boiler Pressure
Below 1 bar and the boiler won't fire. Visible on the front gauge. Recurring drops indicate a leak that needs finding.

Check Gauge First

Faulty Thermostat or Controls
Boiler functioning correctly but not receiving the signal to fire. We check the full system, not just the boiler.

Frozen Condensate Pipe
Common in cold weather — the external condensate pipe freezes and locks out the boiler. Quick to resolve once identified.

Seasonal Fault

Pump or Motorised Valve Fault
Heating fails to circulate even when the boiler fires. We test the full system to locate the fault accurately.

Boiler Lockout
Safety shutdown triggered by an internal fault. A reset may restore heating temporarily — but if it keeps happening, the cause needs finding.

Don't Just Reset

Our approach

Why Accurate Diagnosis Matters

We don’t leave until the system is working correctly throughout the property.

We fix the cause — not just the symptom

Some engineers reset a boiler and leave. If the fault returns — and it will — you've paid for a visit that solved nothing. We carry out a proper diagnosis on every call, identify the root cause, and fix it. Most no heating or hot water jobs are resolved on the first visit.

First visit fix rate
Most faults resolved same visit

Parts carried on every callout to avoid return trips

Replacement Rate
Rarely needed for these faults

Most causes are component-level repairs, not full boiler failures

Coverage

Areas We Cover

Responding to no heating and no hot water calls daily across Glasgow Southside — same-day attendance in most cases.

Shawlands

Giffnock

Newton Mearns

Clarkston

Battlefield

Cathcart

Mount Florida

Pollokshields

Langside

King's Park

Rutherglen

East Kilbride

Barrhead

Paisley

FAQs

Common Questions

Heating works but no hot water — what's wrong?

On a combi boiler, this is commonly a diverter valve fault. The valve controls whether the boiler heats radiators or hot water taps — when it sticks or fails, one function is lost. Usually diagnosed and repaired in a single visit.

Hot water works but the heating won't come on — is it the thermostat?

Possibly — but it could also be a pump, motorised valve, or wiring fault. We test the full system rather than assuming. A misdiagnosis costs you time and money.

Can I fix low boiler pressure myself?

You can re-pressurise a combi boiler yourself using the filling loop — your boiler manual will show you how. But if pressure keeps dropping, there’s a leak somewhere that needs finding. Call us and we’ll locate it.

How quickly can you attend in Glasgow?

Same day in most cases across Glasgow Southside. Call us directly and we’ll confirm a realistic timeframe on the call.

Will I need a new boiler?

Rarely, for a loss of heating or hot water fault. Most causes are component-level repairs. We only recommend replacement if repair isn’t cost-effective — and we’ll explain why.

Trusted by Customers Across Glasgow

No Heating or Hot Water in Glasgow ?

Same-day response — fault diagnosed and fixed on the first visit where possible.