HVAC Costs in New Hampshire

Verified cost ranges across cities in New Hampshire

Verified by 3 sourcesUpdated May 13, 2026

HVAC Cost Comparison — New Hampshire

Compare verified cost ranges across cities in New Hampshire

Cost Comparison — Furnace Installation

New Hampshire2 sources

Low

$1,657

Typical

$1,657

High

$1,934

Manchester2 sources

Low

$1,751

Typical

$1,751

High

$2,043

Nashua2 sources

Low

$1,751

Typical

$1,751

High

$2,043

Cost Comparison — Heat Pump Installation

New Hampshire2 sources

Low

$4,487

Typical

$4,487

High

$5,236

Manchester2 sources

Low

$4,741

Typical

$4,741

High

$5,533

Nashua2 sources

Low

$4,741

Typical

$4,741

High

$5,533

Cost Comparison — Ductwork Installation

New Hampshire2 sources

Low

$69

Typical

$132

High

$465

Manchester2 sources

Low

$73

Typical

$139

High

$491

Nashua2 sources

Low

$73

Typical

$139

High

$491

Cost Comparison — Furnace Repair

New Hampshire2 sources

Low

$66

Typical

$1,038

High

$2,673

Manchester2 sources

Low

$70

Typical

$1,096

High

$2,824

Nashua2 sources

Low

$70

Typical

$1,096

High

$2,824

Cost Comparison — Thermostat Installation

New Hampshire3 sources

Low

$88

Typical

$240

High

$465

Manchester3 sources

Low

$93

Typical

$254

High

$491

Nashua3 sources

Low

$93

Typical

$254

High

$491

Cost Comparison — Duct Cleaning

New Hampshire2 sources

Low

$50

Typical

$1,846

High

$5,000

Manchester2 sources

Low

$53

Typical

$1,951

High

$5,283

Nashua2 sources

Low

$53

Typical

$1,951

High

$5,283

Cost Comparison — Boiler Installation

New Hampshire2 sources

Low

$3,662

Typical

$3,662

High

$4,274

Manchester2 sources

Low

$3,870

Typical

$3,870

High

$4,516

Nashua2 sources

Low

$3,870

Typical

$3,870

High

$4,516

Cost Comparison — Boiler Repair

New Hampshire2 sources

Low

$75

Typical

$2,240

High

$6,100

Manchester2 sources

Low

$79

Typical

$2,367

High

$6,445

Nashua2 sources

Low

$79

Typical

$2,367

High

$6,445

Cost Comparison — Attic Insulation Installation

New Hampshire2 sources

Low

$300

Typical

$5,609

High

$15,500

Manchester2 sources

Low

$317

Typical

$5,926

High

$16,377

Nashua2 sources

Low

$317

Typical

$5,926

High

$16,377

Cost Comparison — Radiant Floor Heat Installation

New Hampshire2 sources

Low

$440

Typical

$440

High

$580

Manchester2 sources

Low

$465

Typical

$465

High

$613

Nashua2 sources

Low

$465

Typical

$465

High

$613

Browse HVAC Costs by City in New Hampshire

Select a city to see local pricing adjusted for cost of living.

All HVAC Services

hvac

Furnace Installation

Supply and installation of a new gas, propane, or electric furnace including flue venting, gas piping, ductwork connections, and thermostat wiring.

Cost data available

hvac

Heat Pump Installation

Installation of an air-source heat pump system for year-round heating and cooling, including lineset, electrical, and refrigerant charging.

Cost data available

hvac

Ductwork Installation

Fabrication and installation of supply and return air duct systems in new or remodeled homes, including registers, grilles, and balancing dampers.

Cost data available

hvac

Furnace Repair

Diagnosis and repair of a non-heating or malfunctioning furnace, including igniter replacement, heat exchanger inspection, and blower motor service.

Cost data available

hvac

Thermostat Installation

Installation or replacement of a programmable or smart Wi-Fi thermostat with C-wire installation if required.

Cost data available

hvac

Duct Cleaning

Mechanical cleaning of supply, return, and branch air ducts using rotary brushes and high-powered vacuums to remove dust, debris, and allergens.

Cost data available

hvac

Boiler Installation

Supply and installation of a hot-water or steam boiler for hydronic heating, including gas piping, venting, expansion tank, and zone valves.

Cost data available

hvac

Boiler Repair

Diagnosis and repair of a faulty boiler, covering pump replacement, pressure vessel issues, zone valve failure, and flue blockages.

Cost data available

hvac

Attic Insulation Installation

Addition of blown-in cellulose or fiberglass insulation in the attic floor to reach recommended R-value and reduce HVAC load.

Cost data available

hvac

Radiant Floor Heat Installation

Installation of in-floor hydronic tubing or electric heating mats under tile or hardwood floors for radiant space heating.

Cost data available