Just got a quote for my 4 year old house in Coatesville, PA. It's 3000 sq ft with an unfinished basement. Currently on a propane based heating system, which I run very minimally in the winter and summers to avoid high costs. Looking for opinions on the quote I got from a local contractor. Quote is as follows: Install packaged unit 4 ton dual stage Water Furnace envision series GSHP. We will install 10KW backup electric heater for supplemental heat. This includes: - Condensate removal system - Flow centers with piping from flow center to the compressor. - All electrical work required to install new system. - Programmable thermostat with intellastart option - Flushing and purging with proper mixture (15-20%) of methanol in the ground loop. - Comprehensive start & test of the new system by certified technicians - All hot water generator piping and a new Bradford White hot water heater Contractor will be responsible for drilling two (2) vertical boreholes 250’ deep. They will install a 1” geothermal u-bend HDPE pipe. Loop will be grouted with bentonite and anti skid stone. - Excavating supply and return lines from the loop field to the mechanical room and properly fusing the manifolds onto the ground loops. - Pressure testing ground loop with 60 psi prior to back filling. - Back-filling and compacting trenches. - Properly repairing and grading all disturbed areas on property due to to the construction of the ground loops. Total investment: $27,590 Is this a fair price? Is Water Furnace reliable? Saw some info online where some people were complaining about design flaws in the unit. Anyone know if I can sell my current HVAC unit and water heater to help reduce my final cost? Not sure if there is a market for somewhat used HVAC units. Or a service to donate the units to? Thanks for any input in advance!