Dick Adams wrote:
The estimates I have for a new HVAC system are one-liners
- just cost, no breakdowm of material and labor.

First, there should be a breakdown because there is no
reason to pay sales tax on labor.

Here in Texas you only pay tax on labor when the job is for a commercial
job. Who ever gave you a quote should be able to tell you what you need to
know.

Second, where does one find the actual cost of an HVAC
system?

If the company can not tell you what you what to know, get another company
or asked the owner of the company for answers. They do not want to lose a
sales call because the salesman does not know the answers.

Finally, what is a rough estimate of labor hours to
remove an existing system and install a new system
presuming it's an outside/inside system?

Most jobs will take 2 days. First day they remove the existing system and
start putting in the new system then the second day they finish up.

Dick

--
Moe Jones
http://www.MoeJones.info