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https://www.reddit.com/r/Homebuilding/comments/xcptiw/what_did_you_pay_for_your_entire_hvac_system/
2400 sq ft new build in TX. Total cost was 10,950.00 for a heat pump with propane.

https://www.justanswer.com/hvac/7nu52-whats-rule-thumb-cost-estimating-new-construction.html
Ok, as a rule of thumb you can figure about 1600 to 1800 per ton with the zone systems.So 8000 to 9000 per system. 3 systems would be in the 24,000 to 27,000 ...

https://thecoolingco.com/blog/new-construction-hvac-cost/
Consider a typical single-family home, ranging from 1,200 to 2,200 square feet. You can expect to pay around $1,000 $4,000 for ductwork alone.

 

 

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