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Posted By: djhIn the UK, the official term is MVHR - mechanical ventilation with heat recovery. I don't think the issues are connected with the heat recovery, in general they apply equally to plain MV. And that is used in huge numbers of offices, public buildings and homes around the world. There's also an enormous quantity of discussion about its pros and cons. In short: "nothing new to see here, please move along". Just my opinion.
Posted By: tomsuswebAnyone want to defend HRV a bit? I was starting to be converted. Are Sinnerboy's fears sensible? Or if it's installed and maintained correctly will you end up with much better air quality?
Posted By: tomsuswebAnyone want to defend HRV a bit?
Posted By: sinnerboyUnless you fit one of these at each outlethttp://www.scottaire.co.uk/circularvalves2.html" >http://www.scottaire.co.uk/circularvalves2.html
Posted By: sinnerboy (in " MVHR with humidity recovery?" thread)2. Insist that all ceiling inlet outlets are fitted with fusible link dampers - intumescent collars do not work
Posted By: john_connett'm confused by these comments as both fusible links and intumescent collars depend on heat to activate them. Granted, the fusible links may be quicker in operation. Isn't the major risk in fires from smoke and other combustion products that may be spread through ducting for some time before heat activated devices operate?
Posted By: Paul in MontrealOver here, where HRV and ducted air heating systems are common, no-one uses fusible links or intumescent collars in residential applications. If you want to be extra careful, link your smoke detector to the power supply of the HRV so it is shut off if smoke is detected.Paul in Montreal.
Posted By: sinnerboyHRV and fireI don't believe the risks are understood - or if they are - that they being addressed by the HRV industry
Posted By: john_connett* What is required for ; cleaning and routine maintenance?
Posted By: sinnerboyThat guidance relates only to additional measures required for larger domestic properties
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