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Boiler Not Firing Up Common Causes in Bromley Rental Properties

Published June 2026 | Boiler Repair

When a boiler won't fire up in rental properties, landlords are typically responsible for repairs and maintenance, while tenants handle basic upkeep like bleeding radiators and reporting issues promptly to avoid further damage.

When your boiler refuses to fire up on a cold morning, it's more than just an inconvenience - it's a potential dispute waiting to happen between landlords and tenants. Understanding who's responsible for what can save everyone time, money, and heated arguments. A boiler that won't start is one of the most common heating emergencies our engineers encounter across Greater London. The causes range from simple fixes tenants can handle themselves to complex issues requiring Gas Safe registered professionals. Knowing where the responsibility lies helps resolve these situations quickly and fairly. ## Landlord Obligations Under Current Regulations Under UK housing law, landlords bear primary responsibility for boiler repairs and maintenance in rental properties. This isn't just good practice - it's a legal requirement that applies to all residential tenancies in Bromley and throughout England. Landlords must ensure the heating system works properly at the start of each tenancy and maintain it throughout. This includes annual Gas Safe inspections, which cost typically between £80 and £120 in the Greater London area. These inspections aren't optional - they're mandatory for any property with gas appliances. When a boiler won't fire up due to mechanical failure, component breakdown, or system wear, landlords must arrange repairs promptly. Common landlord responsibilities include: 1. Faulty gas valves or pressure switches 2. Broken heat exchangers or burner assemblies 3. Control board failures in modern condensing boilers 4. Pump failures and circulation issues 5. Annual servicing and safety certificates Modern boilers from brands like Worcester Bosch, Vaillant, and Baxi contain sophisticated control systems that can fail without warning. These aren't maintenance issues - they're genuine breakdowns requiring professional attention. Repair costs typically range from £150 to £600 depending on the component and boiler age. Landlords must also respond to emergency repairs within reasonable timeframes. While there's no specific legal timeline, most tenancy agreements specify 24-48 hours for heating repairs during winter months. ## What Tenants Are Expected to Handle Tenants aren't completely off the hook when boilers won't start. Several common causes fall squarely into tenant territory, particularly those related to basic maintenance and user error. The most frequent tenant-related issue is simply running out of credit on prepayment gas meters. Our engineers regularly attend callouts where the "broken" boiler just needs topping up. Similarly, tenants should check their electricity supply - many modern boilers won't start without power to run their control systems. Basic maintenance tasks tenants should handle include: 1. Checking and adjusting thermostat settings 2. Bleeding radiators when they feel cold 3. Ensuring vents and flues aren't blocked by debris 4. Reporting issues promptly before they worsen 5. Following manufacturer guidelines for user controls Tenants should also maintain reasonable temperatures to prevent frozen pipes, which can trigger boiler lockout systems. Most modern boilers from manufacturers like Ideal and Glow-worm have frost protection, but this only works if the unit receives power and isn't completely drained. User manual violations often void warranties too. If a tenant ignores low pressure warnings or repeatedly resets safety switches without addressing underlying causes, they might bear responsibility for resulting damage. ## Grey Areas Where Disputes Happen Not every boiler problem fits neatly into landlord or tenant categories. These grey areas cause the most disputes and require careful consideration of each situation's specific circumstances. Pilot light issues exemplify this complexity. While relighting a pilot light seems like basic maintenance, recurring problems often indicate underlying faults with gas valves, thermocouples, or ignition systems. A tenant might successfully relight it once, but if it keeps going out, that's typically a landlord issue requiring professional attention. Low boiler pressure creates similar confusion. Tenants can learn to repressurise systems using the filling loop, but frequent pressure drops usually indicate leaks somewhere in the heating system. What starts as tenant maintenance often reveals landlord repair obligations. Thermostat problems blur responsibility lines too. Simple battery changes or basic programming fall to tenants, but faulty wiring, sensor failures, or compatibility issues with newer smart thermostats require landlord attention. When a Nest or Hive thermostat won't communicate with an older boiler, that's not user error. Age-related failures cause particular disputes. A 15-year-old boiler that repeatedly breaks down might need replacement rather than endless repairs. Determining when repair costs become unreasonable requires honest assessment from both parties. Power supply issues also create confusion. While tenants handle electricity bills, faulty wiring to boiler supplies typically falls under landlord electrical obligations. A tripped circuit breaker might be tenant territory, but corroded connections or undersized cables aren't. ## How to Report This Issue (Tenant Perspective) When your boiler won't fire up, how you report the problem affects how quickly it gets resolved. Good communication prevents misunderstandings and helps engineers diagnose issues more efficiently. Start by checking obvious causes before contacting your landlord. Verify your gas and electricity supplies are working, check the thermostat is calling for heat, and note any error codes displayed on the boiler. Many modern units from brands like Viessmann and Alpha show diagnostic codes that help engineers identify problems remotely. Document the symptoms clearly when reporting. "The boiler's broken" doesn't help anyone. Instead, describe what happens when you try to fire it up: "The boiler tries to start, I can hear the fan running, but then it shuts down after 30 seconds with error code EA showing." Take photos of error displays, thermostat settings, and pressure gauges if accessible. These visual references help engineers prepare appropriate parts and tools before arriving. Videos of unusual sounds or behaviour patterns can be particularly helpful for intermittent faults. Report emergencies immediately, but distinguish between true emergencies and inconveniences. No heating in January constitutes an emergency, especially for vulnerable tenants. No hot water in summer is urgent but might not require out-of-hours callout rates. Keep records of all communications with your landlord, including dates, times, and response details. This documentation becomes crucial if disputes arise or if you need to involve local authorities about unresponsive landlords. ## Getting It Fixed Quickly in Bromley Rental Properties Speed matters when boilers won't start, particularly during cold weather when pipes might freeze or vulnerable tenants face health risks. Bromley tenants have several options for expediting repairs when landlords don't respond appropriately. Most reputable letting agents in Bromley maintain lists of approved Gas Safe engineers for emergency callouts. These contractors understand local housing stock and common problems with older Victorian terraces and newer developments around areas like Beckenham and Orpington. Emergency repair costs vary significantly depending on timing and complexity. Weekday callouts typically range from £80-150 for diagnostics, while weekend or bank holiday rates can reach £200-300 before parts and labour. Simple fixes like replacing failed thermostats might add £60-120, while major component replacements can cost £300-800. When landlords prove unresponsive, tenants can arrange emergency repairs themselves and recover costs later. This right exists under housing legislation, but tenants must follow proper procedures and use Gas Safe registered engineers. Always obtain written quotes and keep detailed receipts. Local authority environmental health departments can intervene when landlords ignore heating emergencies. Bromley Council's housing team has powers to require emergency repairs and recharge costs to landlords. However, this process takes time and should be a last resort. Tenant insurance sometimes covers alternative accommodation when heating failures make properties uninhabitable. Check policy terms carefully, as coverage varies significantly between providers and circumstances. ## Documentation You Should Keep Proper record-keeping prevents disputes and protects both landlords and tenants when boiler problems arise. Both parties should maintain comprehensive documentation of all heating-related issues and responses. Tenants should photograph or scan all communications about boiler problems, including initial reports, landlord responses, and engineer visit confirmations. Dating everything clearly helps establish timelines if disputes require resolution through deposit protection schemes or courts. Keep copies of all engineer reports, even for simple visits that don't require repairs. These documents help identify recurring problems and demonstrate ongoing maintenance histories. When engineers find multiple minor issues during routine servicing, these records help determine whether replacement becomes more cost-effective than continued repairs. Maintain records of any temporary measures taken during repair delays, including costs of temporary heating or alternative accommodation. These expenses might be recoverable from landlords who fail to respond appropriately to emergency repairs. Landlords should document all maintenance activities, including annual Gas Safe inspections, routine servicing, and emergency repairs. These records demonstrate compliance with legal obligations and help defend against claims of negligence or inadequate maintenance. Both parties should understand what constitutes reasonable wear and tear versus damage requiring repair or replacement. A well-maintained service history helps establish whether failures result from normal aging or inadequate care. ## Landlord and Tenant Questions ### Who Pays When a Boiler Won't Start Due to Low Pressure?

Low pressure issues depend on the underlying cause. If tenants can safely repressurise the system using manufacturer instructions, this falls under basic maintenance. However, if pressure drops repeatedly, indicating system leaks, landlords must investigate and repair the root cause. Initial repressurising is tenant responsibility, but recurring problems require professional attention.

### Can Tenants Arrange Their Own Boiler Repairs in Emergencies?

Yes, tenants can arrange emergency repairs when landlords don't respond within reasonable timeframes. However, you must use Gas Safe registered engineers and follow proper procedures. Keep detailed records of attempts to contact landlords, obtain written quotes, and preserve all receipts. You can recover reasonable costs from landlords later, but avoid unnecessary expensive repairs.

### What Constitutes an Emergency Boiler Repair in Winter?

Emergency repairs include complete heating system failures during cold weather, gas leaks, and situations where vulnerable tenants face health risks. No heating when outside temperatures drop below 5°C generally qualifies as emergency status. However, partial heating loss or hot water only problems might not justify out-of-hours callout rates unless circumstances are exceptional.

### How Quickly Must Landlords Respond to Boiler Problems?

While there's no specific legal timeframe, most tenancy agreements specify 24-48 hours for heating repairs during winter months. Emergency situations requiring immediate attention include gas leaks, carbon monoxide concerns, and complete heating loss affecting vulnerable tenants. Reasonable response times depend on circumstances, but landlords can't ignore urgent heating problems indefinitely without consequences.

### Are Tenants Responsible for Boiler Servicing Costs?

No, annual boiler servicing and Gas Safe inspections are landlord responsibilities under housing regulations. These legal requirements can't be passed to tenants through tenancy agreements. However, tenants might bear costs for callouts caused by their negligence, such as repeatedly ignoring low pressure warnings or blocking ventilation grilles.

Frequently Asked Questions

Why is my boiler not firing up?

Common reasons include low gas pressure, a frozen condensate pipe, faulty ignition electrode, broken diaphragm, or a tripped electrical supply. Check your gas supply and electrics first before calling an engineer.

Can I fix a boiler that won't ignite myself?

You can check a few things safely: reset the boiler using its reset button, check the thermostat settings, verify the gas supply is on, and thaw the condensate pipe if frozen. Never attempt to work on gas components yourself - this is illegal without Gas Safe registration.

How quickly can a boiler repair engineer attend?

Most boiler repair companies offer same-day or next-day appointments for no-heat situations. Emergency call-outs may carry a premium, typically 20 to 50 pounds extra compared to standard appointments.

Oliver Naylor

Covers boiler breakdowns, thermostat issues, and annual servicing advice for homeowners across the UK.

Reviewed by Thomas Waite - technical reviewer at voltrade. This article is intended as general guidance and should not replace a professional on-site assessment. All Voltrade engineers are independently qualified, insured, and vetted.