Northeast · Climate zones 5
HVAC service in Connecticut
Connecticut has cold, snowy winters and warm, humid summers. Many homes are older, and heating oil remains common, making conversions to heat pumps or gas a frequent decision.
- 237 ZIP codes covered
- 177 cities and towns
- Licensed contractors

Connecticut HVAC at a glance
- Climate
- Cold (IECC zones 5)
- What it means
- Heating dominates. Furnace and boiler reliability, combustion safety and clear vents are the priorities, with summer AC still needed.
- Common systems
- Oil and gas boilers, Ductless mini-splits, Heat pumps, Gas furnaces
- Coverage
- 237 ZIP codes in 177 cities and towns
- Region
- Northeast
Homes & equipment
Heating and cooling in Connecticut
Oil and gas boilers with baseboard or radiators are common in older homes, and central AC is less universal. Ductless mini-splits are a popular way to add cooling and efficient heating.
State energy programs offer incentives for heat pumps and efficiency upgrades.
Common problems
HVAC problems we see in Connecticut
Oil heat costs
Many homeowners compare heat pumps or gas conversions to cut heating oil costs.
Older housing
Older homes often lack ducts, making mini-splits a practical choice.
Coastal storms
Nor'easters and hurricanes bring flooding and outages along the coast.
Other Connecticut areas in our network
Contractors in our network also cover Hartford, Bridgeport, New Haven, Stamford, Norwalk, West Hartford, Waterbury, New Britain, Hamden, Manchester, Bristol, Meriden, and 165 more communities. Enter your ZIP code in the request form to check yours.
Recommended
Services Connecticut homeowners need most
Contractor licensing in Connecticut
Connecticut licenses heating, piping and cooling contractors through the Department of Consumer Protection.
Utilities in Connecticut
Eversource and United Illuminating supply electricity. Connecticut Natural Gas, Southern Connecticut Gas and Yankee Gas supply natural gas.
FAQ
Connecticut HVAC questions
Should I convert from oil to a heat pump in Connecticut?+
Many homeowners do, often keeping the oil boiler as backup at first. Incentives may help with the cost.
How do I check a Connecticut HVAC license?+
Use the Department of Consumer Protection's license lookup.
Other states in the Northeast
HVAC help in Connecticut
Call to be connected with a licensed HVAC contractor serving your ZIP code, or send a request online.