Range from the cheapest installation of a carbon monoxide alarm £40 (AP Electrical based in TF10) to the dearest installation of a carbon monoxide alarm £84 (Smart Switch Electric based in TF2).
Comparing electricians estimates for fitting a carbon monoxide detector gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to install carbon monoxide alarm in ST20 by posting a job with HaMuch and we will send it to electricians in ST20.