Contractors8 min read
Replacing your HVAC system: what to ask each installer
The short answer
Compare bids for the same equipment and installation scope, including sizing, electrical work, permits and labor warranty. Ask about scheduling flexibility, removal of the old unit and confirmed incentives. Price financing and cash payment separately before choosing a contractor.
Compare bids on the same equipment
Ask each bidder to specify equipment brand and model, capacity, efficiency rating, electrical and line-set work, permits, removal and labor warranty. Compare the same installation scope and ask each contractor to explain differences.
Split equipment from labor
Ask the installer to separate equipment, installation, permits and other work. Confirm the model, sizing assessment, duct changes and warranty. Compare equivalent written scopes before comparing totals. Ask what each installer can include, such as removal of the old unit, a longer labor warranty or a first maintenance visit.
Use scheduling flexibility
For a planned replacement, ask contractors which installation dates offer scheduling flexibility. Compare that proposal with your current system’s condition and the practical cost of waiting. Handle urgent heating or cooling needs on their own timetable.
Incentives and rebates
- Federal tax credits: check IRS eligibility by installation date. Do not include a federal credit in your quote total unless the installation qualifies under current rules.
- Utility rebates: check your utility’s current programs, eligible equipment and application deadlines.
- Manufacturer rebates: confirm current offers and whether they combine with other incentives.
- State energy programs: check available incentives and their equipment and income requirements.
- Financing: compare APR, fees, repayment period and deferred-interest terms with the cash price.
Ask for each confirmed rebate to be shown separately from the contractor’s price, with its eligibility requirements and application deadline. Compare the price before incentives as well as the amount after incentives you qualify for.
Tell us what you’re planning and what you’d love.
Businesses reply with offers built around you, including what they can add.
Start a requestQuestions people actually ask
- How much should a new HVAC system cost?
- Get local bids for your required equipment and installation scope. Ask for the equipment, labor, electrical work, duct changes, permits and warranty to be itemized so you can compare the complete job.
- Should I repair or replace my old system?
- Compare a written repair diagnosis with replacement options, warranty, running costs and the system’s condition. Ask the technician about expected repair durability, refrigerant availability and compatibility before deciding.
- Is the lowest HVAC bid the right one?
- Check what the lowest bid leaves out. Common gaps are undersized line sets, no load calculation, poor installation work and missing permits. A good contractor does a Manual J load calculation instead of matching the old unit’s size, pulls permits and puts the labor warranty in writing. When bids match on those points, the lowest one can be the right choice.
- Do high-efficiency (SEER2) systems pay for themselves?
- Ask for the price difference between efficiency options and an energy-use estimate for your home. Compare installation cost, confirmed incentives, expected running costs and how long you plan to use the system.