Boiler Repair Costs in Crawley and Who Pays for Them

Published July 2026 | Boiler Repair

Landlord Obligations Under Current Regulations

Landlords in the UK have a clear legal duty to keep heating systems and boilers in good working order. This comes from Section 11 of the Landlord and Tenant Act 1985, which requires landlords to keep in repair and proper working order the installations in the property for space heating and heating water. That includes the boiler, the pipework connected to it, and the controls.

Beyond the general repair obligation, landlords must also comply with the Gas Safety (Installation and Use) Regulations 1998. Under these rules, any landlord who provides a gas appliance in a rented property must arrange an annual Gas Safety Check carried out by a Gas Safe registered engineer. This is not optional. Failing to do so is a criminal offence and can result in unlimited fines or imprisonment. The Gas Safe Register is the official register for gas engineers in the UK, replacing CORGI registration back in 2009 - so if a landlord or their letting agent is booking an engineer, Gas Safe registration must be verified before any work starts.

The annual Gas Safety Certificate (CP12) must be given to the tenant before they move in, or within 28 days of the check being completed. Landlords are also required to keep records of those checks for at least two years.

When it comes to costs, landlords cannot pass the expense of boiler repairs onto tenants through deductions from the deposit or rent increases in response to repair requests. If the boiler fails through fair wear and tear - which covers most breakdowns - that cost sits entirely with the landlord.

In terms of what to budget, boiler repairs in the UK typically range quite widely depending on the fault:

• Minor repairs such as replacing a thermostat, topping up pressure, or bleeding radiators: typically between 80 and 150 pounds
• Mid-range repairs including replacing a diverter valve, pump, or fan: typically between 150 and 350 pounds
• Major component replacements such as a heat exchanger or printed circuit board (PCB): typically between 350 and 650 pounds
• Emergency call-out fees outside normal hours can add 80 to 150 pounds on top of parts and labour

Brands matter parts availability and cost. Worcester Bosch parts are widely stocked across West Sussex, and so are Vaillant and Ideal. Older Potterton or Baxi units can sometimes mean longer waits for parts, which affects how quickly a tenant's heating can be restored. Landlords with properties in Crawley should factor this into their choice of boiler if they're ever replacing a unit.

What Tenants Are Expected to Handle

Tenants are not expected to repair the boiler, but they do have responsibilities that sit alongside the landlord's maintenance duties.

The primary tenant obligation is prompt reporting. If the boiler develops a fault, stops working, or shows warning signs like unusual noises, a flashing fault code, or a persistent pressure drop, the tenant must report it to the landlord or letting agent as soon as reasonably possible. Sitting on a problem for weeks and then claiming it caused further damage is the kind of thing that can lead to disputes.

Tenants are also expected to carry out minor, low-skill tasks that are considered part of using the property in a tenant-like manner. Topping up boiler pressure is a common example - it's covered in most boiler manuals and does not require any specialist knowledge. If a boiler manufacturer like Worcester Bosch or Viessmann has a simple pressure repressurisation guide in the manual left with the property, tenants are generally expected to follow it. The same applies to resetting a tripped boiler after a brief power cut.

Keeping the property adequately heated in cold weather is also part of the tenant's responsibilities. If a property is left unoccupied and unheated during winter and pipes freeze as a result - leading to boiler damage - the tenant may be held partly responsible for the resulting repair costs.

What tenants must not do is attempt repairs themselves or allow unqualified friends or family to work on the gas system. Any work on a gas boiler must be done by a Gas Safe registered engineer. This is a safety and legal requirement, not a preference.

Grey Areas - Where Disputes Happen

Not every boiler problem falls neatly into "landlord's responsibility" or "tenant's fault." These are the situations where disputes between landlords and tenants in Crawley rental properties - and across West Sussex more broadly - tend to arise.

Blocked condensate pipes

During cold snaps, condensate pipes on modern condensing boilers can freeze, causing the boiler to lock out. Some landlords argue this is a maintenance issue they're responsible for. Others say it's the tenant's job to thaw the pipe using hot water. There's no definitive legal ruling on this. If the pipe has been poorly routed or is undersized, that's a design fault and falls on the landlord. If the pipe is fine but the tenant left it in temperatures that predictably caused freezing, the line blurs.

Limescale and hard water damage

Parts of West Sussex have moderately hard water, and boilers do accumulate limescale over time, particularly in the heat exchanger. If a boiler fails due to limescale build-up, the landlord typically covers repair costs under general wear and tear. But if a landlord can show the tenant disabled or ignored a water softener provided with the property, the argument becomes more complicated.

Tenant-caused damage

If a tenant adjusts boiler settings incorrectly, physically damages the unit, or ignores a small fault that then grows into a major failure, landlords may look to claim repair costs from the deposit. These cases depend heavily on what was documented at check-in, what evidence exists of the fault being reported (or not), and what the tenancy agreement says. This is why documentation matters so much - more on that below.

Failure to report in time

If a tenant fails to report a boiler fault and that delay leads to a more expensive repair, landlords can sometimes argue for shared responsibility. The key question is whether a reasonable person would have recognised the signs and reported them promptly.

How to Report This Issue - Tenant Perspective

If your boiler has broken down or is behaving erratically, here's how to handle it properly to protect yourself and get the problem fixed as quickly as possible.

1. Check the basics first. Confirm the boiler is on, the pressure is correct (typically between 1 and 1.5 bar), and there's no obvious fault code displayed. Note the fault code if there is one - engineers and landlords will find that useful. Worcester Bosch and Vaillant boilers display fault codes that give a good steer on what's wrong before anyone has even looked at the unit.
2. Report in writing. Send an email or WhatsApp message (something with a timestamp) to your landlord or letting agent. Don't just call - a phone conversation leaves no paper trail. State what the boiler is doing, when it started, and whether you have heating, hot water, or neither.
3. Quote the law if necessary. If you're without heating or hot water in cold weather, the landlord must respond within a reasonable timeframe. In emergency situations, "reasonable" typically means within 24 hours. You can refer to the Landlord and Tenant Act 1985 and your local council's Environmental Health team if the landlord is not responding.
4. Keep records of all communication. Screenshot messages. Save emails. Note the dates and times of any phone calls you make.
5. Contact your local authority if the landlord is unresponsive. Crawley Borough Council's Environmental Health team can issue a notice if a property is left in a state that poses a risk to health, which includes a prolonged absence of heating or hot water in cold weather.

One option available to tenants and landlords looking to understand a fault before booking an engineer is the Voltrade GoFIX diagnostic tool, which helps identify what the likely issue is based on symptoms. That kind of upfront clarity can save time and avoid unnecessary call-out fees.

Getting It Fixed Quickly in Crawley Rental Properties

Crawley sits in a well-served area for Gas Safe engineers, with good coverage across the town and into the surrounding parts of West Sussex. That said, during cold snaps - typically November through February - demand spikes sharply, and engineers' diaries fill up fast. For landlords with multiple properties in Crawley, having a preferred engineer or a boiler cover plan in place before things go wrong makes a real difference.

For landlords, the response time obligation is worth understanding clearly. There's no single legal definition of what counts as "reasonable," but as a working guide: a boiler that fails during cold weather and leaves tenants without heating should be addressed within 24 hours as an emergency. A fault that affects hot water but not heating may allow slightly more time, but still needs prompt action. Dragging repairs out for weeks is not acceptable.

If a repair is going to take more than a day or two, landlords should consider providing alternative heating - electric heaters - while the fix is arranged. This is not a legal requirement in all circumstances, but refusing to do so while a tenant is without heat in winter is the kind of thing that leads to complaints and potential legal action.

For common boiler brands in Crawley rental stock - Worcester Bosch, Baxi, Ideal, and Vaillant being among the most commonly fitted - most parts can be sourced and fitted within a day or two. Older or less common units may need parts ordered in, which can extend timelines.

Documentation You Should Keep

Whether you're a landlord or a tenant, documentation is what resolves disputes and protects both parties. Here's what should be kept and for how long.

For landlords:

• Annual Gas Safety Certificates (CP12) - keep for at least two years, provide copies to tenants
• Boiler service records - these demonstrate proactive maintenance and are useful if a dispute arises about whether a fault was caused by neglect
• Repair invoices and engineer reports
• Any communication with tenants about faults reported and actions taken
• Boiler installation certificate and any warranty documentation

For tenants:

• A copy of the Gas Safety Certificate - landlords are required to provide this
• Written records of any faults reported, with dates
• Screenshots or copies of messages to the landlord or letting agent
• Photos of fault codes displayed on the boiler
• The check-in inventory - particularly any notes about the boiler's condition at the start of the tenancy

The check-in inventory is often overlooked but it's one of the most useful documents if a deposit dispute goes to arbitration. If the boiler was noted as in good working order at the start of the tenancy and then breaks down through normal use, that's wear and tear - on the landlord. If the boiler was already showing faults at check-in and those went undocumented, both parties are at a disadvantage later.

Landlord and Tenant Questions

Is a landlord legally required to fix a broken boiler in a rented property?

Yes. Under Section 11 of the Landlord and Tenant Act 1985, landlords must keep heating installations in proper working order. A broken boiler that leaves tenants without heat or hot water is a legal repair obligation. Landlords cannot pass this cost onto tenants through deposit deductions unless the tenant caused the damage through misuse or neglect. Tenants can escalate to their local Environmental Health team if repairs are not carried out within a reasonable timeframe.

How much does it typically cost to repair a boiler in the UK in 2026?

Costs vary significantly depending on the fault. Minor repairs such as a faulty thermostat or pressure issue typically come in between 80 and 150 pounds. Mid-range work like replacing a diverter valve or pump typically costs between 150 and 350 pounds. Major repairs involving components like a heat exchanger or PCB can reach 350 to 650 pounds or more. Emergency call-outs outside normal hours typically add 80 to 150 pounds on top of those figures. Labour rates across West Sussex tend to sit in line with the national average.

Can a landlord charge a tenant for a boiler repair?

In most cases, no. Boiler repairs due to normal wear and tear are the landlord's cost. A landlord can only seek to recover repair costs from a tenant if they can demonstrate the tenant caused the damage - for example, by physically damaging the unit, by ignoring a fault that then worsened significantly, or by misusing the heating system. Any such claim would typically go through the tenancy deposit dispute process, and landlords need clear evidence to succeed with it.

Does the Gas Safe registration requirement apply to all boiler repairs in Crawley?

Yes, without exception. Any work on a gas boiler or gas system in the UK must be carried out by a Gas Safe registered engineer. This applies whether the property is in Crawley, elsewhere in West Sussex, or anywhere else in the country. Unregistered gas work is illegal, dangerous, and invalidates insurance policies. Before any engineer starts work, you can verify their Gas Safe registration on the official Gas Safe Register website using their licence number.

What should a tenant do if a landlord refuses to repair a broken boiler?

Start by putting the request in writing if you have not already done so, and keep records of all communication. If the landlord fails to act within a reasonable timeframe - typically 24 to 48 hours for a complete heating failure in cold weather - you can contact Crawley Borough Council's Environmental Health team, who have powers to issue notices requiring repairs. In serious cases, tenants can also apply to the First-tier Tribunal to seek a rent repayment order or compel the landlord to carry out the repair.