I purchased a vaillant ecotec 837 with flue, timer, flue extension, caldensate, and got a calmag free with my order. I got the best price I could find. The items all arrived the next day. I ordered the wrong size flue extension and they were happy to take back i obviously had to pay for the return. the guys were very helpful and polite. I would highly recommend and I would also definitely use again.
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