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My trusty old Worcester Heatslave 2+ started kettling noisily recently. Black oxide probably came off the cast iron boiler sides and deposited at the bottom of the boiler above the burner. The primary circuit was last flushed with acid about 20 years ago, so not surprising some corrosion has...

My trusty Worcester Heatslave 2+ boiler, now running for 34 years without any serious faults, does have one disadvantage. Its output to water is only 11kw which makes running a bath slow, especially in winter. I had a word with my electrician last year and he suggested heating the cold water...

HMG's boiler scrappage scheme, offering £400 discount against the cost of old and inefficient boilers, starts today. Should I be tempted? I have an old (28 years) Worcester Heatslave 2+ boiler, that is highly reliable, and relatively cheap to service. (<£100 p.a.) My gas bill is about...

I posted last year that my Worcester Heatslave 2+ boiler has worked reliably for more than 25 years. It has a cast iron boiler and a primary circuit water header tank, on a system with conventional steel radiators. It occurred to me recently that I have had no build up of black oxide in the...

I have had a Worcester Heatslave 2+ boiler for 27 years. During that time it has been serviced annually by a gas engineer. The other day it required its first spare part - the pilot safety thermocouple failed. Other than this minor repair it has never gone wrong or caused any trouble. I...