Vaillant commercial 65kw boiler with plate heat exchanger Post author:jodystewart Post published:2nd May 2020 Post Category:Uncategorised Removed a leaking old Keston boiler and replaced it with a vaillant 65kw commercial boiler with hydraulic separation from the existing central heating system via a vaillant plate heat exchanger. You Might Also Like Oil boiler breakdown in Newtoft 2nd May 2020 Unvented cylinder installation in Nettleham 1st May 2020 Underfloor heating manifold replacement in Gainsborough 2nd May 2020