Green Homes News

After researching and reading all I can find on the Hybrid Heat Pump water heater products I'm very wary of installing one due to the excessive noise issues detailed here…

We're renovating a 25 x 40 building with unheated slab in northern Vermont.  The slab is mostly below grade.  We plan to build a floor above the slab and install…

Two programs, although not available in every state, help homeowners pay for ugrades while lowering monthly energy bills

I'm working on a project of several structures in climate zone 7 where ZIP R-6 has been installed on everything enclosed currently - however the builder is having trouble sourcing…

Location: Zoom

Anna Feller, the Swiss National Science Foundation Postdoctoral Fellow in the Hopkins Lab at Harvard University, will present "On the Genetic Architecture of an Adaptive Radiation."... Read more about Arnold Arboretum Research Talk

I am in the process of building a house. The house is insulated to R49 in the attic (was just insulated and inspected), I also inspected the ventilation and based…

Hello all,I am building a timber frame house in central Maine (climate 6A). My building site is well drained, sandy soil and almost perfectly level. I am hoping to use…

Hi,I'm looking for advice to fix my cold floor on piers. We're in zone 4a.Current assembly is: carpet, pad, 3/4" plywood, 9- 1/2" TJI 16" OC, fiberglass batt, 5/16" fiber…

I am having a house built in Eastern part of Virginia.  Due to severe mold sensitivity I specified certain materials mainly Rockwoolinsulation plaster walls and ZIP sheathing.  I ended up…

Steam radiators and spotty insulation make for a challenging HVAC problem

I'm wondering if there is wisdom in sizing a ductless heat pump for the 'load' from an adjacent room or for the room only.This is an addition with 3 exterior…

Hi,I have a late 70's home with 2x6 raftered ceilings.  The roof has ridge vent, but there is fiberglass batt completely filling the rafter bays.  The pitch is 2.25/12.  I…

The article "Heat Pumps for Peace and Freedom" argues that the US should make heat pumps for Europe, anyone want to weigh in on pros/cons?  Seems like the basic premise…

I'm trying to find a way to find a single entry door to replace an existing door in my home in southern California with a nice passive house door but…

Hi there,I realize that insulating and sealing is a topic that has been written about extensively - both in articles and in the Q&A.  The wealth of information might be…

A couple of weeks ago we noticed significant mold on the ceiling and concrete walls of the wine room of our new house (Moved in 18 months ago, concrete walls…