cost of flushing heating radiators

The cost of flushing your heating radiators depends on several factors, including the size of your property, the number of radiators and accessibility. Check out for more info. Listed below are some of the factors that can affect the cost of flushing your heating system:

Price depends on size of property

The cost of flushing heating radiators is directly related to the number of radiators in a property, so the more radiators there are, the less expensive the service will be per radiator. The price of a power flushing service from a British Gas engineer can range from PS300 to PS600, but this price is still considerably higher than the cost of a local heating engineer. Other factors to consider before booking a power flushing service are the size of your property and the number of radiators.

The cost of central heating flushing will vary greatly, depending on the number of radiators in your home. A two-bedroom flat may have just four radiators, but a four-bedroom property may have as many as fifteen. Obviously, the size of the property will affect the cost, as more radiators mean more chemicals and labour. Ideally, you’d want to pay around PS400 for a power flush, which will take about a day to complete.

Number of radiators

Flushing your heating radiators may seem like an easy DIY project but the truth is that you don’t have to do it yourself. Instead, you can hire a qualified heating engineer to do the job for you. A professional power flushing service will typically cost PS75 to PS85 for a small flat, PS90 to PS100 for a three-bedroom flat, and about PS120 to $125 for a four-bedroom house. The cost of material and labour will also increase.

The process involves removing the sludge from the heating radiator. Sludge builds up over time, making the water in the radiator feel cold at the bottom. A chemical flush will remove this build-up and restore the boiler’s reliable hot water flow. The process will typically involve a scale filter, chemical cleaner, and system inhibitor. The cost of a chemical flush varies depending on the number of radiators, the expertise of the engineer, and the number of radiators.


The cost of power flushing your heating radiators depends on several factors, including how many radiators you have and how many you need to be refurbished. A professional heating engineer will charge a minimum of PS75 for a two-bedroom flat, but may cost more than PS90 for a three-bedroom house. The cost of the materials used to power flush your heating radiators is around PS80 to PS90.

The time needed to power flush your heating radiators varies depending on the size of your home. Larger properties will have more radiators than a one-bedroom flat, and a large house can have as many as fifteen radiators. While a single heating engineer can easily perform a power flush, two or more can be more efficient. The number of tradespeople and the size of your home will also determine the cost.


The cost of flushing heating radiators varies greatly depending on how many radiators you have. For a small property, the engineer will charge around PS300, but if you have six radiators, you may be required to pay around PS350. If you have more than ten radiators, you should expect to pay around PS500 or more. The distance of the heating engineer and the time spent flushing each radiator will determine the cost.

The average cost of power flushing a central heating system is around PS385 to PS425 for a two-bedroom flat. For a three-bedroom home, the cost is around PS875 to PS910, while a four-bedroom home can cost up to PS1150. The cost will vary by location, as labour costs will be more expensive in the southeast and in London. In Scotland and Northern Ireland, costs will be significantly lower.