"Infiltration makes a HUGE difference. Look at the heat loads on a windy day vs. a calm one. On a calm sunny day it can be 45f and my furnace wont run with the thermostat set @ 68f. If it's 60f, overcast, and windy the furnace may actually run…"
"IT all matters, I lot of sealing, A lot of air barrier. A lot of "R" A lot of thickness and where does the water vapor go? little windows or Little % of glass to wall area. What about Mass? the last…"
"IMO and experience of course a single comprehensive retrofit is idea for many reasons. But I call total BS on calling anything but that "not true home performance". The truth is the homeowner does decide and you can have all…"
Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment you have to sell, trade or wish to purchase.Please post the equipment age, serial numbers, condition, warranties and asking price.See More
I am participating in a DOE Better Buildings program in southwest Ohio that is in its infancy stages. During discussions while setting the technical standards of the program, the topic of proper sizing vs 2 stage equipment came up. Many of the "seasoned HVAC contractors" involved in this conversation including the director of operations for the program adamantly were advocating for the standard to be" 2 stage trumps sizing". Meaning if you cant find a 2 stage piece of equipment in the…See More
This group will focus on the issues associated with incorporating renewable energy sources like Solar PV, Solar Thermal, Geothermal, Small Wind, Small Hydro into the Residential Energy Efficiency and Sustainability business model.
HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements, and more. Since heating & cooling are such a big part of home energy use, understanding HVAC is critical.See More
For too long there has been relatively little EE focus on multifamily, but some new programs have recently started. This group gives us a venue to share our experiences on cost effective audit & retrofit strategies and analysis tool needs.See More
A presentation by Greg Labbé in April 2014 on retrofitting vintage home for energy efficiency. He talked about basic building science, brick houses, movement of heat energy and moisture in and out of the house, air barrier and water barrier, house…