Geothermal HVAC - HVAC - Contractor Talk

Geothermal HVAC

Thread Tools Search this Thread Display Modes
Old Yesterday, 03:15 PM   #1
Registered User
joemcwilliams's Avatar
Trade: Carpentry
Join Date: Nov 2019
Posts: 1
Rewards Points: 2

Geothermal HVAC

Hi All, Have a client who I am building a new home for/. They want a Geothermal HVAC system that will use an existing 500' deep water well for the water supply. He wants it to be an "open loop" system that withdraws water from the bottom of the water column and drops it back near the top. In trying to understand the setup, I have asked the ONLY HVAC sub in the area that claims competency, but they cannot answer my questions. Hoping some of you can. House is 5600 sq ft on two levels. Pinch points prevent using a single air handler to circulate air. 1.) can one water handler system feed multiple evaporators inside a locally placed air handler? 2.) It has been estimated that the house would require a 4 ton and a 3.5 tone traditional cooling and 180k and 160k btu heating. What size Geo system might be able to handle the total load if it were possible?

Thanks in advance!
joemcwilliams is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!




Old Yesterday, 06:30 PM   #2
Always Learning
overanalyze's Avatar
Trade: Builder/Remodeler
Join Date: Dec 2010
Location: NW Ohio
Posts: 8,212
Rewards Points: 1,030

Re: Geothermal HVAC

There is no way to size that without knowing ceiling heights, windows, doors, r-values, etc. That is definitely the HVAC subs job to size. I wouldn't ever try and do that for myself or a client.


It is what it fix it.
overanalyze is offline  
Old Today, 12:29 AM   #3
Fouthgeneration's Avatar
Trade: Masonry
Join Date: Jan 2014
Location: Middle
Posts: 2,519
Rewards Points: 9,073

Re: Geothermal HVAC

Injecting "used" water into a drinking water well = silly and most likely NOT LEGAL. Too many chances you mix anti-freeze and other water treatments with the drinking water.....sick home owners

It'd be cheap though...

The flow rate of the underground water table determines the seasonal capacity of the under piping..If the underground water is always flowing "downhill" to the nearest river/creek, it won't cool down as much as non- flowing fossil water all the heat is sucked out of the area around the Geo thermal well pipe loops.

I'd have LP back up burners to go with an L.P. generator set needed for country living as the Grid is destroyed by Tree-Huggers. IMHO
I might be an Idiot, but I know things that You don't: Please wait till after you get my know-how to insult me....
Fouthgeneration is online now  

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for

At we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?