I went with a small contractor that was recommended to me last year, 2400sqft with 2 Trane heat pumps were just under 18k, that included hydrocoils for backup heat and we got rid of the baseboard heaters (I'm in Shelton too). Much lower than any bids from major contractors who wanted 20k+ with a single unit. An almost identical setup from Encon was 40k... the heat pumps option was $900 for both units, otherwise would have been 17k.