Looking for a blower door tester in New London, CT? Describe your project once and up to three certified energy testers who work in New London and Southeastern Connecticut Planning Region get back to you with a quote. It's free and there is no obligation.
New London is home to about 28,081 people (2024 Census Bureau estimate), a growing community (+2.6% since 2020). With 5,009 people per sq mi, it is a densely built-up area. New homes and additions here go through energy code inspections that often include air leakage testing.
New London at a glance
- Population (Census Bureau estimate, 2024)
- 28,081 (+2.6% since 2020)
- Rank in Connecticut
- 17th of 29 cities and towns
- Land area
- 5.6 sq mi
- Population density
- 5,009 people per sq mi (densely built-up)
- Type
- City (New London city)
- Main county
- Southeastern Connecticut Planning Region
What to check before hiring in New London
- Code: in Connecticut, the energy code adopted by the state or city sets the limits and the tests.
- Timing: schedule a pre-drywall test to catch leaks early.
- Report: make sure the report format matches what the inspector expects.
- Price drivers: number of homes, tests and trips.
Useful official resources
-
Building Energy Codes Program (DOE)
Official information and guidance.
-
RESNET
Official information and guidance.
Services available in New London
-
Blower door test
Air leakage test of the building envelope, with the report required for code compliance.
-
Duct leakage test
Duct leakage test of the HVAC system as required by the energy code.
Frequently asked questions in New London
How much does a blower door test cost in New London, CT?
It depends on the number of homes and tests. Describe your project: testers who serve New London reply with a quote.
How long does it take?
About an hour per test for a typical home.
Can I test existing homes?
Yes, it is part of most energy audits.
Which certified energy testers will contact me?
Up to three independent certified energy testers who serve New London and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.