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Compare HVAC costs in Mount Prospect, IL (2026)

Comparing HVAC options in Mount Prospect? Here's a side-by-side look at every project, with local 2026 pricing and what each one is best suited for. The most budget-friendly option here is Furnace Replacement (from $4,900).

Furnace ReplacementBest value$4,900 – $8,800
Best for: Lowest upfront cost for homes with gas heatTypically $6,850
Central AC Installation$6,150 – $13,150
Best for: Cooling only — pairs with an existing furnaceTypically $9,650
Heat Pump Installation$7,950 – $14,550
Best for: Most efficient; heats and cools in one systemTypically $11,250
Full HVAC System Replacement$9,750 – $18,100
Best for: Best when both heating and cooling are dueTypically $13,950

Often paired with HVAC in Mount Prospect

These tend to come up alongside HVAC work for Mount Prospect homeowners.

Insulation
Attic Insulation
Typical 2026$1,800 – $7,300
Best time to buy

Cheapest time for hvac in Mount Prospect

A furnace or AC that dies mid-heat-wave gets replaced at whatever the on-call crew charges. One that gets swapped in April or October gets a competitive, unhurried quote instead.

Best window
Spring and fall (Mar–May, Sep–Oct)
Avoid
Peak summer and mid-winter
Off-peak savings
5–15%
FAQ

HVAC in Mount Prospect

How much does hvac work cost in Mount Prospect?

Mount Prospect homeowners looking at hvac work should expect $4,900–$18,100 in 2026, with the exact number driven by which project you need — Furnace Replacement is cheapest (from $4,900), Full HVAC System Replacement is the most expensive (up to $18,100).

Which hvac option is cheapest in Mount Prospect?

Furnace Replacement is the most affordable hvac project in Mount Prospect, typically around $6,850 — best for Lowest upfront cost for homes with gas heat.

When is the cheapest time for hvac work in Mount Prospect?

Time it for spring and fall (mar–may, sep–oct) and you'll typically save 5–15% versus peak pricing. Peak summer and mid-winter is the window to avoid.

How do I choose the right hvac option in Mount Prospect?

The options above are sorted by price, but price shouldn't be the only filter — match the project to what your home needs first. Then get 2–3 local quotes and look past the sticker price to scope, warranty length and equipment tier.

These figures are adjusted for Mount Prospect's labor rates and cold climate, plus local permit fees — always get a final number confirmed by a local contractor.