An outdoor air conditioning condenser unit positioned beside a blue-sided house at sunset.

AC Installation in New Haven, CT

A new air conditioner in New Haven will run from June through August every year. Tell us about the house, and a licensed contractor who covers New Haven will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Aerial view of a square outdoor air conditioning condenser unit on a concrete pad beside a house wall with a sliding glass door.

Three months of real heat

New Haven only asks for cooling from June through August. Summer afternoons average 81°F, so the unit is working for a short stretch each year rather than carrying the load most of the year.

Any new central air conditioner installed today has to meet a federal minimum of 13.4 SEER2. That is the floor, not a special feature. Whatever gets installed will clear it.

3 months
June through August, your air conditioner is on duty
81°F
the average summer afternoon it cools against
13.4 SEER2
the federal minimum any new unit must meet
Isometric cutaway illustration of a single-story house showing interior rooms, ceiling ductwork, an indoor air handler, and an outdoor condenser unit connected by lines, in gray and white tones on a white background.
Your air conditioner works hardest from July through August.

NOAA 1991–2020 monthly normals

Overhead view of a gray residential air conditioning condenser unit mounted on a concrete pad beside a house with asphalt shingle roofing.

A higher-efficiency unit would save about $40 a year to run in New Haven compared with a new unit at the federal minimum.

  • A higher-efficiency unit$300 a year
  • A new unit at the federal minimum, 13.4 SEER2$340 a year

Estimates for a typical New Haven home, from EIA household energy data, Connecticut fuel prices and NOAA climate normals. Your home will differ.

Connecticut requires HVAC contractors to hold a state license.

The Department of Consumer Protection is the one testing and keeping the record. The license belongs to the contractor, not to this particular job, so it tells you the person or company has met the state's standard, not that this installation was checked on its own.

For the installation itself, the check on the work comes from the local building office. Most cities and counties in Connecticut require a permit for an air conditioner installation, and an inspection once it's done. That inspection is what confirms the work at your house was done right, separate from whatever the contractor's license already tells you about them.

Sources: Connecticut General Assembly · Connecticut Department of Consumer Protection

What size air conditioner does my house need?
The right size comes from a load calculation, not a chart based on square footage. A contractor looks at your home's insulation, window area, ceiling height, and layout to figure out how much heat it needs to remove. Putting in a unit that's too big cools the air fast but shuts off before it pulls the humidity out, leaving the house feeling damp. Too small, and it runs constantly on the hottest afternoons and still can't keep up.
Should I replace the whole system or just the outdoor unit?
In most cases both the outdoor unit and the indoor coil need to be replaced together. The two are matched to work at a specific efficiency and capacity, and pairing a new outdoor unit with an old indoor coil usually means it won't run the way it's rated to. A contractor can check the age and condition of your indoor coil and ductwork to tell you whether either needs attention too.
Do HVAC contractors in New Haven need a state license to work on my home?
Yes. Connecticut requires HVAC contractors to hold a state license, issued by the Department of Consumer Protection. Ask to see the license number before work starts, and you can confirm it directly with the state.