Boiler, Heating & Hot Water Guides

Practical information and professional insights from OnTime – Complete Maintenance Solutions.

Our guides help homeowners, landlords and managing agents understand common boiler problems, central heating issues, hot water systems and gas safety responsibilities.

We explain potential causes, important considerations and when an appropriately qualified professional should assess a system.

Our aim is to provide clear, straightforward information without encouraging unsafe repairs or unnecessary work.

Heating Advice for Homeowners & Landlords

Understand potential problems and when professional assistance is appropriate.

System Maintenance 4 min read

5 Signs Your Central Heating System May Need Cleaning

Cold areas on radiators, poor circulation and unusual heating noises can sometimes indicate contamination or other circulation problems. Understand the warning signs, possible causes and why a professional assessment is important before deciding whether power flushing or another treatment is appropriate.

September 2026 Read Guide

Important Safety Information

Our guides are intended for general information and educational purposes only.

They do not provide a diagnosis, repair instruction, safety certification or substitute for a professional inspection.

Heating and hot water installations vary between properties and manufacturers. Similar symptoms may have different causes.

Do not attempt repairs or adjustments to gas appliances, internal boiler components, electrical connections, heating safety devices or unvented hot water safety components unless suitably qualified and authorised to undertake the work.

If you smell gas, suspect a gas leak or suspect a carbon monoxide incident involving gas appliances, leave the affected property and contact the National Gas Emergency Service on 0800 111 999 from a safe location.

Seek urgent medical assistance if carbon monoxide exposure is suspected. Call 999 for a medical emergency.

Need Professional Assistance?

If your boiler, heating or hot water system is not operating as expected, contact OnTime to discuss arranging an appropriate inspection.

OnTime – Complete Maintenance Solutions

Telephone: 020 3633 1122

WhatsApp: 07599 305852

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Gas Safe Registered Engineer

Need a Boiler Repair or a Quote for a New Boiler Installation?

Speak directly with a Gas Safe registered engineer on 020 3633 1122. No call centres and no pushy sales.

Call 020 3633 1122