# Gas Safe Central Heating Engineers \& Local Plumbers London: NO CALL OUT CHARGE \- 7 Days a week, 365 Days a year service\! We are Gas Safe Registered \& Fully Insured, Call Us Today \- 02080530369

> NO CALL OUT CHARGE \- 365 Days a year service\! We are Gas Safe Registered \& Fully Insured, Call Us Today \- 02080530369

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## Pages
- [Gas Safety Certificates](https://www.0800homefix.com/gassafetycertificates-london/)
- [Terms \& Conditions](https://www.0800homefix.com/terms-and-conditions/)
- [Toilet Drain Unblocking](https://www.0800homefix.com/services/drainage/drain-unblocking/toilet/)
- [Outdoor Drain Unblocking](https://www.0800homefix.com/services/drainage/outdoor-drain-unblocking/)
- [Drain Unblocking](https://www.0800homefix.com/services/drainage/drain-unblocking/)

## Posts
- [Vaillant Boiler Problems and Fault Codes](https://www.0800homefix.com/heating/vaillant-boiler-problems-and-error-codes/): Vaillant boilers are reliable but can develop faults, either as a symptom like no hot water, cold radiators or dropping pressure, or as an F\-code on the display\. This page covers both: the most common Vaillant boiler problems and what causes them, then every Vaillant fault code we cover with a link to its full fix guide\. Some clear with a reset or a pressure top\-up; others need a Gas Safe engineer\.

- [Why Is My Water Bill So High? 8 Causes and What to Do About Each One](https://www.0800homefix.com/plumbing/why-is-my-water-bill-so-high/): The most common causes of a high water bill are a running toilet cistern, a dripping tap, a leaking appliance, a Thames Water billing estimate, seasonal usage, a faulty meter, a leaking garden tap, or an underground leak on the supply pipe\. A supply pipe leak is the only cause with no visible sign inside the property\. The 30\-minute water meter test confirms whether a leak is present\.

- [Thames Water Leak Allowance: How to Claim and Excessive Usage Letters Explained](https://www.0800homefix.com/plumbing/thames-water-letter-excessive-usage/): The Thames Water leak allowance is a rebate on the cost of the water you lost to a confirmed and repaired leak on your property\. To claim, the leak must be repaired within four weeks of it being found and the claim submitted within 90 days of the repair, with proof of repair\. It covers the water charges only, not the cost of finding or fixing the leak\. If you received an excessive usage letter, that is usually the first sign of an underground supply pipe leak, and the leak allowance is how you recover the water charges once it is fixed\.

- [How to Reset Your Heating Timer](https://www.0800homefix.com/heating/how-do-i-reset-my-heating-timer/): To reset a heating timer, first set the current time, as a power cut often leaves the clock wrong and the heating coming on at odd times\. Then set your on and off periods\. On a digital programmer, hold the relevant buttons to set the clock and program; on a mechanical dial, set the pins or tappets\. If it still will not respond, the fault may be the boiler rather than the timer\.

- [Carbon Monoxide and Your Boiler: Why a Detector Is Essential](https://www.0800homefix.com/heating/why-a-carbon-monoxide-leak-detector-is-essential-for-every-boiler-room/): A carbon monoxide detector is essential because carbon monoxide is a colourless, odourless gas that you cannot detect without one\. A faulty or poorly serviced gas boiler can produce it, and it can be fatal\. Fit an audible CO alarm near your boiler and sleeping areas, have your boiler serviced every year by a Gas Safe engineer, and if the alarm sounds, get out and call 0800 111 999\.


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## Categories
- [Heating](https://www.0800homefix.com/category/heating/)
- [Plumbing](https://www.0800homefix.com/category/plumbing/)
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