How do I make sure a closed loop will meet the (primarily) heating requirements for the home?
Currently running a Bard 3 ton 3GV38S2AANwith an open loop from well, discharging to nearby river.
Unit appears to have been installed in 2015 and has two stages if I understand correctly
In last few years PFAS contamination of ground water has been discovered.
Now private wells are being condemned, city water being run.
Need to look at converting to closed loop.
I reviewed the "what to consider before buying" list but not sure if all factors apply to conversion.
We are in western Michigan a few miles north of Grand Rapids.
Home is about 1800SF with walkout finished basement adding another 1500 SF.
Walls and roof deck insulated with spray foam, windows are Andersen 400 series and only a couple years old.
As I understand it, changing from open to closed loop has a built in efficiency loss.
The incoming fluid temps won't be as stable with closed loop.
Flow will also need to be higher, Bard suggests current setup is probably running 6 GPM, closed loop will need 9 GPM.
Have a quote to drill horizontal loops (angled down actually), a bunch of money.
Our property is heavily wooded and trenching would be challenging.
Still waiting for HVAC guy to respond with info on heat loads, alternatives and answers to questions such as "Is current Bard sized appropriately".
House is all electric, no gas on the property.
Options are limited.