Hello, I'm a new member but have found this site quite useful in research. I find my self here cause I have many ideas and questions that I believe only experience and creativity can answer. I'll start by telling everyone a short story about me, who I am, and why I am considering installing a geoexchange system. I am a 21 year old new dad, so comfort is becoming a necessity not a luxury, I purchased a home late last year, its a 2000 square foot 1 story monster on a 4 acre lot in Gooding Idaho. Half of the house is a 1915 laf and plaster, cellulose 2x4 framed farm house, the other half is a 2007ish 2x6 fiberglass insulated beauty. The current setup is a retrofit 80,000btu 80% natural gas furnace, electiric 50 gal water heater, attached to a 1950's ac pump on the verge of failure. The ac pump got me researching because I believe the contact points on the relay are seized so the pump stays on with any power. I got several quotes and the lowest was over 4K. My goal was to replace the furnace with a 97% condensing furnace and move it closer to the newer construction so the hvac moved heat evenly throughout the hose, upgrade the water heater to a gas, and of course drop several thousand on a ac pump. To me a geoexcahange would be a perfect solution, replace all three with one swift, the only problem is cost. I fully understand that every dollar extra I spend on my mortgage can save years and thousands. The only geoexchange company I could find within hundreds of miles was estimating $25,000. Althought when I break down the costs I believe I could do most of the work DIY and save a good deal. Which brings me to unanswered questions. I've narrowed it down to slinky per trench, pit dig slinky, or straight pipe? I don't have a well, but I have the acreage and I believe I can get a really good price on the digging. Should I hire someone or attempt diy on a manifold in the ground or should I run each loop into the basement where if a problem exists I can easily fix it? I plan on running my natural gas furnace as a backup instead of expensive electric. Is this done easily with the right thermostat and some expert help. Should I run soaker lines along the hdpe ground loop? I had a few ideas for this including using my currently wasted gray water though it, also extracting valuable energy form the flushed conditioned water. another idea was to pump dual purpose irrigation water from the channel next to my property, perhaps irragating and increasing the efficiency. Well thats all I have right now, any thoughts and comments appreciated. Pleas no grammar Nazis English was not my favorite subject. Thanks Guys.