I've heard that measured performance of actual, installed geoexchange systems can be much lower than advertized COP numbers.Is anyone aware of any accessible, reliable reports about real-world…Continue
Radiant engineering in Bozeman MT designed the closed loop glycol system using Caleffi colectors and a crown 120 gal stainless water storage tank. The house is 1400 ft2. r 70 walls and roof. R 40 slab…"
"Just wanted to check in and thank all the great responders.
I particularly appreciate those who took the time to post links to studies.
Overall it would seem there are not many studies, and they don't include many houses--but the studies that…"
May I recomend a solar thermal combi system. It heats the domestic hot water and uses the excess heat stored in that water to heat the home at night time. I have one system on a heavily insulated home (R 70 walls/ roof,…"
"Best practice put your investment into sealing and insulation. One time cost that can bring your heating/cooling down by 90% with proper orientation. Mini split for heat/cool and ERV/HRV for IAQ. Simple cost effective without having to go into…"
"I'll share what I've found struggling to get a geo system to justify a geo system at my place:
1. You need the right distribution system in place already, low temp hydronic or high volume low pressure well insulated ducted air…"
"Could be...could be not.
In expensive electric markets such as the northeast, NG is likely a slam dunk for those who have it.
OTOH in cheap electricity markets, $0.08 or less, even if NG is available, Geo has a place at the table if for no other…"
"Though none of my relatives or friend have installed this system but when I Googled the topic I found that GeoExchange is the most energy-efficient, environmentally clean, and cost-effective space conditioning system available as per the…"
"I agree with NG's current prices, but do you REALLY think NG is going to stay cheap once it's able to be exported, or regulation and Taxes are applied as they are with oil? The US has the infrastructure to import LNG, but not to export it.…"
"Strip heat will be a requirement mostly north of NC. The amount it requires is a fraction of an air source unit. The amount of EH is so small it could cost $10 or less per year, the max I've seen is about $100/yr.
Geo outperforms every other…"
"Following Curt's comment - a house this well insulated and air tight, & possibly with thermal mass, may not really experience the "peak" load you think about with a leaky house in Upstate NY (or anywhere else)... Mass, and…"