When to Repair vs Replace Your Boiler: A Property Manager’s Guide

For property managers, landlords, and building supervisors, deciding whether to repair or replace a faulty boiler isn’t just about upfront cost—it’s about balancing risk, reliability, efficiency, and long-term value. A quick fix might restore heat today, but will it cost more in the long run?

At Pleasant Plumbers, we help property managers across London make smart, informed decisions when dealing with problematic boilers in residential blocks, HMOs, and commercial buildings. Here's how to assess whether repair or replacement is the right call.

Repairing is often the best option when:

1. The Boiler Is Under 10 Years Old

Modern boilers (especially from brands like Vaillant, Worcester Bosch, and Ideal) are built to last. If yours is relatively new and hasn’t needed many callouts, repairing could be cost-effective.

2. The Fault Is Minor

Common issues like a worn thermostat, ignition failure, low pressure, or a diverter valve fault can often be fixed quickly and affordably.

3. You Have Regular Servicing Records

A boiler that’s been serviced annually by a Gas Safe heating engineer in London is more likely to be repairable and reliable.

4. The Repair Cost Is Less Than 30% of a New Install

If a fix is affordable and there’s no long-term damage, it usually makes financial sense to repair.

Replacement is usually the better option when:

1. The Boiler Is Over 12–15 Years Old

Older models are less efficient, out of warranty, and often incompatible with smart controls or updated parts.

2. Frequent Breakdowns

If your tenant has called three times this winter already, the boiler is costing more in callouts, parts, and complaints than it's worth.

3. Parts Are Obsolete

Some older boilers (like early Baxi or Potterton models) have discontinued parts, making repairs difficult or impossible.

4. The EPC Rating Needs Improving

Replacing an old boiler with a modern condensing model can significantly boost your property’s EPC rating, ideal for meeting MEES regulations.

• Boiler repair: Typically £150–£500
• New combi boiler installation: From £1,800–£3,000
• New system boiler (with cylinder): £2,500–£4,000
• Added value: New boilers come with 7–10 year warranties, higher efficiency, and fewer complaints from tenants

In multi-unit properties, consistent heating and hot water is non-negotiable. A reliable system means fewer complaints, better reviews, and longer tenancies—especially in competitive areas of London.

At Pleasant Plumbers, we don’t upsell—we advise. If we believe a repair will do the job, we’ll tell you. If a new boiler will save you time, money, and callouts, we’ll show you the options clearly.

📲 Call or WhatsApp 0800 046 1000
📧 Email [email protected]
🌐 Visit pleasantplumbers.com

Searching 'Plumber Near Me?' Plumber London or Commercial Plumber London? We operate all across London! If you need a trusted plumber in London then get in touch with us today on 0800 046 1000 or email us on [email protected]
Pleasant Plumbers – Where Trust Flows Like Water.