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Compare HVAC costs in Dover, NH (2026)

Not sure where to start with HVAC in Dover? Below is every project side by side — local 2026 pricing and what each is best suited for. The lowest-cost choice on this list is Furnace Replacement (from $4,550).

Furnace ReplacementBest value$4,550 – $8,150
Best for: Lowest upfront cost for homes with gas heatTypically $6,350
Central AC Installation$5,750 – $12,200
Best for: Cooling only — pairs with an existing furnaceTypically $9,000
Heat Pump Installation$7,400 – $13,450
Best for: Most efficient; heats and cools in one systemTypically $10,450
Full HVAC System Replacement$9,050 – $16,750
Best for: Best when both heating and cooling are dueTypically $12,900

Often paired with HVAC in Dover

HVAC projects in Dover often come bundled with these as well.

Insulation
Attic Insulation
Typical 2026$1,700 – $6,750
Best time to buy

Cheapest time for hvac in Dover

Demand for HVAC work falls off a cliff in the shoulder months, and contractors discount to keep their crews booked. Wait for a 100-degree day or a hard freeze, though, and you're paying emergency rates for a system that just quit.

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

HVAC in Dover

How much does hvac work cost in Dover?

It depends on the project: hvac work in Dover runs anywhere from $4,550 to $16,750 in 2026. Furnace Replacement is the most affordable (from $4,550), while Full HVAC System Replacement is the priciest (up to $16,750).

Which hvac option is cheapest in Dover?

Furnace Replacement comes in lowest in Dover, usually around $6,350 — it's the right fit if you're dealing with Lowest upfront cost for homes with gas heat.

When is the cheapest time for hvac work in Dover?

The best window is spring and fall (mar–may, sep–oct), when demand drops and installers discount — typically 5–15% off peak pricing. Avoid peak summer and mid-winter.

How do I choose the right hvac option in Dover?

Match the project to your home's needs and budget — each option above lists what it's best for. Get 2–3 local quotes for your top choice and compare on scope, warranty and equipment tier, not just the headline price.

Estimates are localized to Dover (cold climate) using local labor price levels, climate factors and permit fees. Always confirm with local contractors.