Learn how to compare HVAC contractor quotes by equipment, scope, sizing, warranties, permits, ductwork, electrical work and commissioning—not price alone.
The cheapest and most expensive proposals may not be offering the same project. A meaningful comparison starts by identifying differences in equipment and scope.
Model numbers matter because brand families can contain multiple efficiency levels, capacities and feature sets. Scope details matter just as much because one contractor may include work another excludes.
Create an apples-to-apples comparison before negotiating price.
Get model numbers for outdoor equipment, indoor coil or air handler, furnace and major accessories.
Ask how the proposed capacities were determined.
Compare refrigerant piping, drains, pads, electrical, venting, gas work, sheet metal and duct modifications.
Identify thermostat or communicating-control model and whether setup is included.
Determine who obtains required permits and whether fees are included.
Ask what startup measurements are performed and what labor coverage applies after installation.
Correct sizing, component matching, airflow, refrigerant setup, electrical work, drainage, controls and duct-system condition all affect how new equipment performs after installation.
A higher-efficiency unit installed into a poor air-distribution system can still deliver poor comfort and disappointing real-world performance.
Two proposals can use similar equipment while including very different labor, accessories, warranties, duct modifications, electrical work, permits and commissioning procedures.
Ask contractors to identify exactly what is included, excluded and assumed.
Upload your contractor proposal to Central HVAC SmartQuote IQ™ for an immediate preliminary review of the quoted price, proposal completeness, warranty information, and important items to confirm before you sign.
Estimate age, replacement cost and review a proposal.
Understand the complete system before buying.
See why equipment and ductwork must work together.
Understand existing symptoms before replacing equipment.
Use Central HVAC's homeowner tools to estimate system age, develop a preliminary replacement budget and review the scope of a contractor proposal.
Analyze an HVAC proposal, equipment, scope and warranty coverage.
See what should be clearly identified before you sign.
Make sure equipment selection is based on the home, not just the old nameplate.
Decode equipment, efficiency and contractor terminology.