How long for a central air refit?

I’d love to refit my 3000 SF home (3 bed, 2 bath) for central heat and air. It’s fairly temperate where I live, so air definitely takes priority over head. I’m just wondering how long the process is, and at least a vague idea of how much it will cost. I know I’ll need to get contractors in for full estimates, but I am wondering if it’s even worth going that far.

Thank you!

Need to know how many floors / levels is your home and your location. Based on that, you might need 2 units, each a separate zone, duct work in the attic to supply the upper level, basement to supply lower level. Duct work can be hidden in closet corners to run from one level to another. Best to use High speed / Forced Air Conditioning UNICO, duct size 3" to 4" lines, easy to hide, finish registers are " round, clean work if the contractor that provide and install such systems. Could cost you with electrical conections with thermostat wires about $24,000.00

This will require 6-7 hours to complete. A 3-ton system. If air Handlers are required then it could take 1.5 hours longer. (approximate price $2400-2600).

Room supply distribution system,and return is part of a complet air (ventalation) system.( Macanical) Humidifier, Heating, Evaperator Coil, Condencing compressor,(Electrical) Out side connection, Heating conn, and Main Panel conn.(Connection and Communication) Line sets, Control wiring and sensors (Thermostats) Well-Honey you choose Honeywell, Size is importent. Time is another. 20% mark up on material. Labor is a flat rate that You and Fontaine-Repair estblish with satisfaction a Guarantee !!!

First, we would need to know how many floors / levels is your home. For example: you might need 2 units, each a separate zone, one unit to supply the upper level, one unit to supply lower level. Duct work can be hidden in closet corners to run from one level to another if needed. The best answer would be to have a Professional at your home to evaluate your layout and provide several options, then you decide what is the best fit for you and your families budget.

A true professional contractor will not size your HVAC system based solely on square footage. Those days are over. A load calculation needs to be done on your home. This takes into account exterior construction, types and sizes of all windows, square footage, ceiling height, attic insulation and ventilation, whether the house has a crawlspace or basement, which direction the house faces, etc. All of that information goes into a computer program, which tells exactly how what size system the home needs to maintain 75 on a 95 degree day, or 70 on a 15 degree day. It also tells exactly how much conditioned air is needed in each room. If the home is a split-level, you must install two systems in order to maintain the set-point temperature on each level. One system cannot maintain temperature on both levels. Heat rises – simple law of physics. It will always be hotter upstairs than it is downstairs if you try to do a multi-level home with one system. All of this being said, for a 3,000-square foot home, you are looking at around $12,000 to $20,000, depending on the brand and efficiency of the equipment you select. This includes all equipment, duct system(s), miscellaneous materials associated with HVAC installation, and labor.