How the price gets worked out
Nothing on this site carries a price, and that is deliberate rather than evasive. HVAC work does not have shelf pricing: the number depends on the capacity the house needs, the equipment tier chosen, the state of the existing ductwork, electrical work, access, and what has to be removed.
What you should expect instead is a clear process. Repairs start with a diagnostic whose cost is given to you before anyone begins. Installations and replacements carry a free written estimate after someone has surveyed the property and run the load calculation.
- Repairs — diagnosed on site, diagnostic cost given up front, repair approved by you before it starts
- Replacements and installations — free estimate after survey and load calculation
- Indoor air quality work — free estimate after humidity, filtration and airflow are assessed
- Commercial and geothermal — quoted after a site survey, because scope and access drive the number
What a good estimate contains
A quote that is only a model number and a total is difficult to compare against anything. A useful estimate says what capacity was calculated and why, what equipment is being proposed, what happens to the existing ductwork, what electrical or condensate work is included, and what is explicitly not included.
If you are comparing two quotes and one is materially cheaper, the difference is usually in what was left out — coil matching, duct modifications, permits, or the removal of the old equipment.
- The calculated load, not just the tonnage of the old system
- Indoor and outdoor equipment as a matched pair
- What is being done about the ductwork, if anything
- Removal and disposal of existing equipment
- What the manufacturer warranty covers, and what registration it requires
Questions worth asking
These are not gotcha questions. Any contractor doing the work properly will have ready answers, and asking them tends to improve the quality of the conversation.
- Did you calculate the load, or match the existing size?
- Why this capacity for this house?
- What did you find when you looked at the ducts?
- What is the difference in running cost between the tiers you are offering?
- Who commissions the system, and what gets verified before you leave?
What happens on installation day
A straightforward residential changeout is usually a single day; more involved work with duct modifications can run longer. The part that matters most happens at the end, and it is the part most easily skipped.
Commissioning is where refrigerant charge and airflow are actually verified rather than assumed. A correctly specified system that leaves with the wrong charge or inadequate airflow will underperform for its entire life, and nothing about that is visible from the thermostat.
Placeholder editorial written for this demonstration build. Figures are illustrative and not retail advice.