Green Homes News

Leadership from the city’s Office of Climate Action, Sustainability, and Resiliency discuss ongoing efforts to achieve a renewable grid and more

Hi everyone, I'm in the process of applying blow-in cellulose to our unvented cathedral ceiling in CZ 7. I want to extend a huge thank you to the GBA community for…

Just had Mitsubishi Hyperheat pump system installed in Minneapolis condo (Climate zone 6B). Works like a charm, very efficient, heats quietly and very economical. However like all good things in…

If you have a correctly sized and installed heat pump system does it run continuously at a low level providing just enough heating and cooling to match building losses? Or…

Hey everyone! This started out as a rather simple sounding video about whether you should insulate your ductwork when it is WITHIN the conditioned living space in your home and…

From the 2018 to 2021 IRC we saw a large increase in required insulation values. It's only in the last few months that I've seen people referring more and more…

Seeking guidance on a 50/50 profit-sharing agreement for a custom home project in Florida. I serve as the contractor and Project Manager, while my employee handles the role of Site…

Hello, I am designing a water catchment system for my house, owner/builder zone 6, Maine.  Just doing a sketch up for the CEO and want to get my fixtures in the…

I'm trying to estimate how much seasonal adjustment I'm likely to need for heating vs cooling upstairs vs downstairs. I used loadcalc.net to work out room by room loads, and…

I have a vented roof in central NC zone 3 (user to be zone 4 until recently)with vaulted ceilings in two locations and have specified R49 for the cavity.  The…

Hi All,I have issues with a recently installed 3C30NAHZ4 with three heads. Summer went well in cool mode. I am in my first winter heating with the unit.Below -15c (5F), the…

I am purchasing a large piece of linoleum second hand, and the store the seller got it from no longer sells it nor can give me any info. We aim…

Hi,I have a new build with double stud wall that got a 0.47 ACH @ 50pa (156 CFM50) prior to insulation, vapor barrier and drywall. Now that the cold winter…

Hello - I'm wrestling with all sorts of ways to condition an attic in a cost-effective manner.  Builders in my area (Climate Zone 5) don't do over-roof insulation, so I'm…

I'm planning on using rockwool comfortboard as exterior, below-grade insulation for my monolithic slab. My climate zone only requires vertical insulation on the slab. Do I need to secure it…

While most of this advice applies year-round, there are a few nuances related to improving indoor air quality during the winter months

Tips and product recommendations for ensuring optimal heat pump performance under wet and potentially damaging conditions

True or False:AC's can lower indoor air RH. T/FAir that has just passed over the cooling coil will often have a very high RH (much higher than room RH), even…

Our home build is well underway and now it is time to think about the garage build. While we have a great contractor building our home, we have to do…

North America's first manufacturer of wood fiber insulation products for domestic distribution reports on its new operations