"Passive Houses by definition do not need recirculation so "...avoid the recirculating units common in Passive Houses" gives a false impression. Extraction of air from kitchens and bathrooms is a standard feature of Passive House…"
"There is a different PH standard for upgrades called EnerPHit which is probably more appropriate in your case. It allows a maximum of 1.0 air changes per hour instead of 0.6 which can be difficult to achieve in existing buildings. It doesn't…"
"In the UK we often used to estimate that about 40% of heat loss in the average traditional poorly insulated house was due to air loss. Where the climate is more equable the percentage may be less but as insulation levels are increased the proportion…"
"Warm roofs only work if vapour is prevented from reaching the underside of the cold decking. Any gaps in the insulation or if it is porous will result in mould growth eventually if there is no ventilation. Plywood is partial vapour stop so is best…"
"This problem requires a pragmatic approach. My suggestions in order are:-
1. The installation of a biomass heating boiler system for heating using the estate renewable timber resource.
2. A solar hot water system probably roof mounted.
"I calculate the saving for a 1x3m. single glazed window using the Glass and Glazing Federation's calculator at about £28 per annum which seems about right. I don't see how where the $274 figure comes from?"
"I think you must be using more elaborate HVAC systems in the US than we use here in the UK. An average whole house ventilation system here with HR (<90% efficiency) will use about 120 kW/h per annum - that is for 22 hours a day at trickle and 2…"
"Are the flue and condensate drainage systems for the heating system working correctly? Propane gas produces a lot of moisture. The vapor barrier should definitely not be removed as there is always a risk of interstitial condensation in highly…"
Welcome to Home Energy Pros. Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for…"
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