How to Choose an HVAC Contractor: 12 Questions to Ask
Equipment brand accounts for a small share of how your system performs. Installation quality accounts for most of it. Screen the installer harder than the box.
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Every number this produces comes from the ranges already published in our cost guides. It combines them; it does not invent anything. Use it to judge a written quote, not to replace one.
All of these are published in full, with the reasoning behind them, in the guides linked at the bottom of this page.
| Configuration | Installed range |
|---|---|
| Single-zone ductless mini split (9k–12k BTU) | $3,800 – $6,500 |
| Two- to three-zone ductless system | $8,000 – $15,000 |
| Ducted heat pump, 2–3 ton, straight replacement | $8,500 – $14,000 |
| Ducted heat pump, 4–5 ton, cold-climate model | $13,000 – $22,000 |
| Dual-fuel system with new gas furnace | $12,000 – $20,000 |
| Heat pump water heater | $1,900 – $4,200 |
Three line items account for most of the spread between two quotes on the same house, and only one of them is about the equipment.
What the calculator deliberately does not do is ask for your ZIP code and hand your details to a lead buyer before showing you a number. The number comes first.
Why a range instead of one number? Because a single national average blends a garage mini split with a five-ton ducted replacement and describes neither. A range tells you where your job is likely to land and, just as usefully, when a quote sits outside it.
My quote came in above the range. Is it a rip-off? Not necessarily. Quotes land above these ranges for legitimate reasons: difficult access, long line sets, asbestos abatement, structural work for a new indoor unit. Ask the contractor to itemise. A quote that cannot be itemised is the problem, not a quote that is high.
Does this include rebates? No. These are pre-incentive installed prices. What you actually pay depends on your state and utility programmes, which change constantly.
Every figure on this page is a range, not an average, and the distinction matters. A national average blends a garage mini split with a five-ton ducted replacement and describes neither. Ranges tell you where your own job is likely to land.
Found something out of date or contradicted by a quote you have in hand? Tell us — corrections are the messages we most want to receive.
Primary references for the figures and procedures on this page. Where a number here is a range drawn from field experience rather than a published measurement, it is labelled as such in the text.
Last checked September 2026. Ranges are US-wide and pre-incentive; always confirm against written quotes.
Equipment brand accounts for a small share of how your system performs. Installation quality accounts for most of it. Screen the installer harder than the box.
Installed prices run from $5,500 for a straightforward single-zone swap to $22,000 for a whole-home ducted system with electrical work. Here is what drives the difference.
COP is the cleanest efficiency number in HVAC and the one manufacturers are least eager to put on the box. Here is how to read it.
The comparison everyone gets wrong, because they compare efficiency percentages instead of comparing the price of a delivered BTU.