This is how my own home is set up.
Move hvac from closet to attic.
Because the furnace is installed in the attic so are air ducts which deliver air to your rooms.
In many cases the furnace can be moved from a closet and into your attic.
Ductwork goes through open ceiling into the attic then into the house.
Well mainly it s a way to save space.
But hvac professionals agree it s not ideal.
Like others suggested i d keep it in attic and have the roof deck spray foamed.
A furnace can be relocated from the closet into the attic.
But in southern california basements are extremely rare so most homes have floor furnaces a k a.
Why should you relocate your air handler.
Attic hvac systems save space.
Those that complied moved furnace to the attic.
Assuming your attic is unheated putting the furnace up there unless you build a utility room for it will also be less energy efficient both because it is having to push the hot air down into the house the opposite way it naturally wants to flow as hot air rises the furnace waste heat will be largely lost to the outside air rather than.
Currently have a 1987 60k furnace too small and 3 5k ac just right.
But this isn t the only place that you can have a furnace to keep your home warm.
Unfortunately in california it is extremely unusual to find a home with a basement so contractors usually install a floor furnace or closet furnace.
Furnaces in closets attached to the garage is the rule in our area.
Heated air flowing through those ducts will lose heat when the unconditioned attic is cold forcing the furnace to run longer.
Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.
According to the u s department of energy the furnace s energy efficiency can drop by 35 when installed in an unconditioned space like the attic.
Is the cost justified.
After all the attic is full of empty space.
So why put an hvac system up in the attic at all.
An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.
The usual place you ll find furnaces in homes across the u s.
We ve lived in this house 32 years since it was new.
Like i said in another post the air noise coming from the return registers beneath the mechanical closet travels a little too well over our new hardwood floors and is an annoyance.
Moving a unit from an attic.
Typically the water heater is located in the closet also.
While this may work well in some homes it isn t the only place where your furnace can be located.
It turns out that the attic is an inefficient space for your air handler and inefficiency means higher utility bills.