A cold home can be stressful, especially if it happens suddenly. Whether your boiler has stopped entirely, radiators feel cold, or hot water has vanished, there are calm steps you can take right now. In this guide, you will learn what counts as an emergency, who to call, how to stay safe, and what you can do to get heat back as quickly as possible. We also explain what is realistic when you are waiting for a repair, and how to prevent repeat breakdowns.

First checks before you call

A few simple checks can save time and sometimes solve the problem.

• Power and controls: Confirm the boiler has power, the fuse has not tripped, and your thermostat or programmer is on and calling for heat. Replace controller batteries if needed.
• Boiler pressure: For most systems, 1.0 to 1.5 bar when cold is typical. If it is below 1.0, you may need to top up using the filling loop as per your manual. Do not overfill. If pressure keeps dropping, call an engineer.
• Reset: Many boilers have a reset button. Only press it once after checking the manual. If the fault code returns, you need a professional.
• Radiators: If some radiators are cold at the top, bleeding them can help circulation. Place a cloth under the valve and turn slowly until air stops hissing and water appears. Recheck boiler pressure after bleeding.
• Fuel supply: For gas, make sure other gas appliances work. For oil, check your tank level and that isolation valves are open.

If heat does not return after these checks, it is time to book a repair with a qualified professional.

Who to call if the heating is not working

For any boiler or central heating fault, contact a qualified engineer with the right certification and local knowledge. If you are in Lincolnshire, WEFIXANY provides expert diagnostics and repair across Spalding, Boston, Sleaford, and nearby areas.

• Gas boilers: You should speak to a Gas Safe registered professional. If you need a trusted team, contact our experienced team for a reliable response from a gas engineer.
• Oil boilers: You will need an engineer with oil boiler experience. We can help with routine care or urgent issues, including oil boiler service.
• Unsure what you have: If you are not sure whether yours is gas or oil, or whether it is a combi or conventional system, do not worry. Tell us the make and model if you can, plus any fault codes, and we will guide you.

If you can smell gas, switch off the appliance, open windows, do not use electrical switches, and call the National Gas Emergency Service on 0800 111 999 immediately. Then contact us to repair the boiler once the area is safe.

What is classed as an emergency boiler repair

Some faults require immediate attention for safety or to protect your home.

You should consider it an emergency if:

• You can smell gas or suspect a gas leak, call 0800 111 999 first.
• You see signs of carbon monoxide exposure, such as headaches, dizziness, or nausea. Turn off the appliance if it is safe, ventilate, and leave the property before seeking medical attention.
• There is a major water leak from your boiler or pipework that could cause damage to your home. Isolate the water supply and turn off the boiler.
• You have no heating in freezing conditions, particularly if there are vulnerable people, young children, or elderly residents in the home.

For urgent support in our area, ask for a heating emergency call-out. We prioritise emergencies to keep your home safe and warm.

Common heating and boiler repairs we handle

Most breakdowns fall into a few familiar categories. Knowing the likely cause helps you understand the next steps.

• Low pressure and lockouts: Often caused by a minor leak, recently bled radiators, or a faulty pressure relief valve. We find the source, top up the system, and test for stability.
• Ignition failures: Spark, flame sensor, or gas valve faults can stop a boiler from firing. We test components and replace parts from trusted suppliers.
• Pump or motorised valve faults: If radiators stay cold while the boiler runs, circulation parts may be failing. We diagnose, replace, and balance the system for even heat.
• Thermostat or control issues: A tired room stat or programmer can send the wrong signals. We repair or upgrade controls, including smart options.
• Frozen condensate pipes: In cold snaps, condensate pipes can freeze outside. Thaw carefully with warm, not boiling, water, and lag the pipe. If it keeps freezing, we can reroute or insulate it properly.
• No hot water from a combi: Plate heat exchanger blockage or diverter valve failure is common. We clean or replace the affected component and check water quality.

Can combi boilers be repaired

Yes. Combi boilers are designed with replaceable parts, and in most cases a repair is both safe and cost effective. Typical combi repairs include diverter valves, fans, pressure sensors, and heat exchangers. We will assess part availability, warranty status, and overall boiler condition. If the unit is very old or frequently failing, we will explain the costs to repair compared with a new, efficient model, then let you decide. If replacement is the smarter option, we can advise on boiler installation with options to match your budget.

How long should you wait for a boiler repair

Response times depend on demand, parts availability, and the urgency of your situation.

• Same day or next day: In many cases we can attend within 24 hours, particularly for vulnerable households or no heat in winter.
• Parts lead times: Common parts are often available the same day. Less common components may take 1 to 3 working days.
• Reasonable expectation: During busy winter peaks, a wait of 1 to 3 days is typical for non emergency issues. If there is a safety risk or severe weather, we prioritise faster attendance.

We will always communicate clearly about timelines and keep you updated, so you know what to expect.

What you can do while you wait

• Stay safe: If advised, switch the boiler off at the control panel. If you smell gas, follow emergency steps and leave the property.
• Keep warm: Use safe electric heaters, close doors to keep heat in, and wear layers. Use hot water bottles and thicker bedding at night.
• Protect pipes: If temperatures are below freezing, open cabinet doors to let warm air reach pipes and run the heating at a low setting if safe to do so.

Prevent the next breakdown

Regular care reduces the chance of future problems and helps your boiler run more efficiently.

• Annual service: Book a yearly check to keep your warranty valid and catch issues early. If you are nearby, ask about boiler service.
• System health: Consider filter installation, system flushes, or water treatment to protect your boiler from sludge.
• Servicing plans: A service plan spreads the cost and gives you priority support. Our boiler service plan offers routine checks and fast response for peace of mind.

When repair is not the best option

If your boiler is very old, unreliable, or out of support, replacement can be more cost effective over time. Newer models run more efficiently, reduce energy bills, and are kinder to the environment. We will give you clear, no pressure advice and a free, no obligation quote so you can decide with confidence.

Summary

When your heating lets you down, take a breath and work through the simple checks. If the issue remains, call a qualified local engineer who can diagnose safely and quickly. Emergencies include gas smells, suspected carbon monoxide, major leaks, and no heat in freezing weather. Combi boilers can usually be repaired with readily available parts, and most households can expect attendance within 1 to 3 days, faster if vulnerable or without heat. For trusted local help across Spalding, Boston, Sleaford, and nearby areas, you can rely on WEFIXANY to get you warm again and keep your system running safely.