10 Things to Check with the Boiler and Gas System When Buying a New Home

Buying a new home is exciting, but it’s easy to overlook what’s hidden away behind cupboard doors. One of the most important — and expensive — systems in any property is the boiler and gas installation.

As experienced gas engineers on the Wirral, we regularly meet new homeowners who discover issues with their heating system only after they’ve moved in. Before you complete, here are 10 key things to check to avoid unexpected costs and safety concerns.

1. The Age of the Boiler

Most boilers have a lifespan of 10 to 15 years. An older boiler may still work, but efficiency drops over time and breakdowns become more likely.

Ask how old the boiler is and whether it has ever been replaced. If it’s nearing the end of its lifespan, factor this into your budget or negotiations.

2. Service History and Maintenance

“It works” doesn’t always mean “it’s been looked after.”

A regularly serviced boiler is safer, more efficient and less likely to fail. Ask for evidence of annual servicing by a Gas Safe registered engineer. A lack of service history increases the risk of hidden problems.

3. The Type of Boiler Installed

Knowing whether the property has a combi, system or regular boiler matters.

Different boiler types suit different household sizes and usage. A system that worked for the previous owner may not meet your needs, especially if your household size or hot water demand is different.

4. Quality of the Installation

Take a moment during viewings to look at the boiler itself.

Is it installed neatly and securely? Does the pipework look professional? Is the boiler easy to access for servicing?

Poor installation is something we still see in older Wirral properties and can lead to future repairs or safety issues.

5. The Flue and Ventilation

The boiler flue is critical for safe operation.

Check whether the flue looks secure, correctly positioned and undamaged. Poor ventilation or incorrect flue installation can pose serious safety risks and may require costly remedial work.

6. Gas Pipework and Meter Location

Older or poorly installed gas pipework can be a red flag.

Look for exposed, unsupported or outdated pipework, and note where the gas meter is located. Upgrading pipework is sometimes necessary when installing modern boilers and can add to costs after purchase.

7. Signs of Ongoing or Past Issues

Ask the seller directly about any past problems.

Repeated pressure loss, frequent resets, strange noises or cold radiators are signs that the system may have underlying issues that haven’t been resolved properly.

8. What the Homebuyer Survey Doesn’t Cover

Many buyers assume their survey includes a full boiler inspection. Most don’t.

Survey reports often state that the heating system was not tested, meaning faults and safety issues can go unnoticed until after completion.

9. The Value of a Pre-Purchase Boiler Check

A professional gas inspection before you complete can save significant stress and expense.

A pre-purchase check can identify safety concerns, highlight upcoming repair or replacement costs, and help you make an informed decision before committing.

10. Efficiency and Long-Term Running Costs

Even a working boiler can be expensive to run if it’s inefficient.

Older systems, outdated controls and unbalanced radiators all affect gas usage and comfort. What seems like a good deal can quickly become costly during winter months.

When buying a home, it’s natural to focus on what you can see. But heating systems are one of the biggest long-term expenses — and one of the most important for safety and comfort.

Taking the time to check the boiler and gas system before you buy can prevent unexpected repairs, emergency call-outs and unnecessary costs.

If you’re buying a property on the Wirral or Merseyside and want honest advice from a local Gas Safe registered engineer, Wirral Gas is here to help.