Gas furnace replacement cost in Hartford, CT
Installed, 80,000 BTU, 95%+ efficiency
A typical furnace (80,000 BTU, 95%+ efficiency) costs about $5,050 installed in the Hartford area, 4% above the national figure, because HVAC technicians here earn a median $37 an hour against $29 nationally.
Prices by size in Hartford
| Size | Low | Typical | High | National typical |
|---|---|---|---|---|
| 60,000 BTU, 80% efficiency | $3,800 | $4,300 | $5,550 | $4,100 |
| 60,000 BTU, 95%+ efficiency | $4,550 | $4,950 | $5,900 | $4,750 |
| 80,000 BTU, 80% efficiency | $3,900 | $4,250 | $5,150 | $4,050 |
| 80,000 BTU, 95%+ efficiency | $4,600 | $5,050 | $6,050 | $4,850 |
| 100,000 BTU, 80% efficiency | $4,050 | $4,450 | $5,600 | $4,250 |
| 100,000 BTU, 95%+ efficiency | $4,750 | $5,200 | $6,100 | $4,950 |
Local labor: what HVAC technicians earn here
| Hourly wage | Hartford metro | United States |
|---|---|---|
| 25th percentile | $29 | $23 |
| Median | $37 | $29 |
| 75th percentile | $41 | $37 |
The Hartford market
Hartford's Licenses and Inspections division conducts building inspections at milestones and at completion, but city pages reviewed for this site did not state whether replacing a water heater, furnace, boiler, AC or heat pump needs a permit, or who may pull one; check with the city before work starts. Its fee formula for building, electrical and plumbing permits is $50.26 for the first $1,000 of construction cost plus $30.26 for each additional $1,000, and mechanical permits were not named. Homes in historic districts need historic review before a building permit is issued. West Hartford, East Hartford and other towns run their own offices. DOE puts Hartford County in cold climate zone 5A. EIA's 2020 survey found 39% of Connecticut homes heat with fuel oil, 36% with gas, and 23% with a boiler. Energize CT runs utility rebates.
Furnaces heat 61% of Connecticut homes, and many burn oil. In Hartford, a furnace replacement is a chance to compare oil, gas and heat pump options. Ask each bidder to price the fuel you have now and one alternative. A long heating season makes efficiency count, so get the AFUE on every quote. Ask whether the old chimney liner suits the new furnace or whether it will vent out a side wall.
Permits in Hartford
We couldn't confirm all of Hartford's rules from official pages. Check with the building department before work starts.
| Permit for this job | Not stated on the city pages we checked (source) |
|---|---|
| Fee | $50.26 for the first $1,000 of construction cost + $30.26 for each $1,000 thereafter (applies to 'Building, Electrical, Plumbing, Fire Suppression, Sign, Temporary Structure' permits; mechanical/heating not named in extracted text) |
| Who can pull it | Not stated on the city pages we checked |
| Inspection | Yes (general) |
Rebates in Connecticut
HEAR: announced, not open yet. HOMES: announced, not open yet. Source: CT DEEP Bureau of Energy and Technology Policy, checked October 13, 2026.
- Energize CT: Utility-funded (Eversource, UI) heat pump, HPWH and Home Energy Solutions rebates; cited as current alternative on DEEP page
What these programs cover, and other states
Other systems in Hartford
- Gas tank water heater
- Gas tankless water heater
- Central air conditioner
- Heat pump (ducted, outdoor unit + air handler)
Gas furnace cost in other metros
Sources
- Hartford, CT permit source (water heater permit)
- Hartford, CT permit source (notable local rule)
- Hartford, CT permit source: Building/Electrical/Plumbing permit fee $50.26 first $1,000 + $30.26
- Hartford, CT permit source: Building or Trades permits via Accela
- DOE Building America: Guide to Determining Climate Regions by County
- Energize CT
- CT DEEP: IRA home energy rebate programs
- EIA RECS 2020: Highlights for space heating fuel in U.S. homes by state
- EIA RECS 2020: Highlights for space heating in U.S. homes by state
- EIA RECS 2020: Highlights for air conditioning in U.S. homes by state
- EIA RECS 2020: Highlights for water heating in U.S. homes by state
- BLS OEWS May 2025, Hartford-West Hartford-East Hartford, CT (49-9021 HVAC mechanics and installers)
- DOE Consumer Furnaces Final Rule TSD (Sep 2023), Table 8.2.12 (2022$); labor share from App. 8D (11.97 person-hours, $705 of $2,527)