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Introducing our new Interactive Voice Response (IVR) telephone communication system!

Customers who now dial in to 860-524-8361 in Greater Hartford or 203-869-6900 in Greenwich will reach our new interactive voice response system.  The IVR adds round the clock functionality and will allow CNG customers to interact with our customer service system in either English or Spanish. 

The IVR provides customers with instant access to up-to-date billing and account information without the need to speak with a representative.  Customers also can sign up for paperless billing, request a duplicate bill, make payment arrangements, learn about energy assitance programs, locate no-fee bill payment sites and more!

If there is a need to speak with a customer representative, that option is available during normal business hours.



Hearing Impaired: Dial 7-1-1
General Information:
CNG Office: 860-727-3000
Greenwich Office: 888-264-2677
Service or Billing Information:
Hartford: 860-524-8361
Greenwich: 203-869-6900
Credit & Collections: 860-727-3034
Meter Reading Phone Line:
Hartford: 860-727-3400
Greenwich: 800-437-0444
*Gas Leaks Only: 1-866-924-5325

 Mail a Payment:

(This address is for payments ONLY.)

Connecticut Natural Gas

P.O. Box 9245

Chelsea, MA  02150-9245

*Please use the Gas Leak Only telephone number for emergency purposes only.


Do you have a question or need information?  Use the following phone number or the form below to contact us. We look forward to hearing from you!


Group Phone  
Customer Relations: 860-524-8361  
Transportation Hotline: 860-727-3300  



Write to CNG

If this inquiry requires immediate attention -

please call us at 860-524-8361. 

E-mails will receive a response within five (5) business days from receipt of message.

Required fields are marked with an asterik (*). 

Please provide the following required information:
First Name: *
Last Name: *
Service Address: *
Town: *
CNG Account Number: (Provide if Applicable)
Your e-mail address: *Please ensure that a valid e-mail address is used!
Same e-mail address: *Please enter again for verification!

Specify the primary nature of your correspondence:  *

Additional topics:
  Service Convert To NaturalGas
  Billing Payments
  Name/AddressChange Budget
  E-Billing Meter Reading
  Public Affairs Conservation

Your question or comments:

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