What $/Ton Do You Use to Estimate Cost?
What $/Ton Do You Use to Estimate Cost?
(OP)
I get this question all the time - "So what will this system cost me". I don't know anymore. It seems the numbers I am used to using are way out of whack and severely on the low side -
Chilled water - $3,500/Ton
WSHP - $3,000/Ton
DX - $2,500/Ton
I've also used these when estimating on sq. ft basis for office type environment (obtained from a local contractor):
Chilled water - $15/16 sq. ft.
WSHP - $13/14 sq. ft.
DX - $11/12 sq. ft.
Demolition add $1/sq. ft.
I've been tasked to review an estimate based on design development documents I produced for a renovation/expansion to a retirement facility utilizing WSHP's. After churning the numbers I come back with a whopping +$4,500/Ton and +$23/sq. ft.
I'm sure the contractor is padding his numbers a little to cover his butt - even so it seems pretty high.
Anyone got more realistic numbers than I use?
Thanks
Andy W.
Chilled water - $3,500/Ton
WSHP - $3,000/Ton
DX - $2,500/Ton
I've also used these when estimating on sq. ft basis for office type environment (obtained from a local contractor):
Chilled water - $15/16 sq. ft.
WSHP - $13/14 sq. ft.
DX - $11/12 sq. ft.
Demolition add $1/sq. ft.
I've been tasked to review an estimate based on design development documents I produced for a renovation/expansion to a retirement facility utilizing WSHP's. After churning the numbers I come back with a whopping +$4,500/Ton and +$23/sq. ft.
I'm sure the contractor is padding his numbers a little to cover his butt - even so it seems pretty high.
Anyone got more realistic numbers than I use?
Thanks
Andy W.





RE: What $/Ton Do You Use to Estimate Cost?
I usually use the RS Means guides. Although everyone may not agree with them, they usually are close enough to get some type of feeling about the cost. The RS Means mechanical cost data book is available at htt
Also it gives you some published backup if the owner or contractor questions your review of the cost.
They have other products (on CD ROM for which you can download updates throughout the year) for products which have been increasing in cost rapidly.
RE: What $/Ton Do You Use to Estimate Cost?
Andy W.
RE: What $/Ton Do You Use to Estimate Cost?
I don't know why either.
RE: What $/Ton Do You Use to Estimate Cost?
Take the "V" out of HVAC and you are left with a HAC(k) job.
RE: What $/Ton Do You Use to Estimate Cost?
We're in the middle of the most significant construction boom we've ever seen. Construction prices are moving 15-25% up each year.
I won't even hazard a guess other than to say the mechanical system will cost between $55 and $75 per square foot.