The Boilerman can. Apologies to Sammy Davis Jnr.

Who can take a boiler (who can take a boiler)
Attach it to a flue (attach it to a flue )
Install it in the kitchen in a day or two
The Boilerman (the Boilerman)
Oh, the Boilerman can (the Boilerman can)
The Boilerman can
'Cause he robs you blind
And makes you think you've got a deal.
(Makes you think you've got a deal).