Quote:
Originally Posted by markwilliamson2001
Yeah...the condenser boilers are more efficient, but have had the habit of freezing external pipes which stops the heating working....it is generally easily fixed though, as it is external plastic pipe that just fills with frozen condensed water.

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You've beaten me to this by 2 minutes. My Boss in work was having a nightmare over the cold snap becasue of this, his, his mothers and his rental house all lost heating every night for 3 nights when this happened. He's currently collecting the condensing water in buckets and will route the outlet through the house when he has time.