Frequently Asked Questions


Q. What information will I see about my bill?

A. You will see your Account ID, Name, the Amount Due on your bill, and the Due Date. In addition you will see an Invoice Description and the Service Address of your account. Please note that any payments you may have recently made by check, in person, or by other means are not reflected. If you have already made an online payment for your bill, or if you do not have a balance due, a bill will not be displayed.

Q. Can I use my Credit Card to make a payment?

A. Yes, you can use a Credit Card or a Debit Card. Visa, MasterCard and Discover are accepted. To make a payment by Credit Card or Debit Card, you will need to enter the Card Number, Card Expiration Date, and the card's Security Code. You can find this information on your card. You can find the 3-digit security code on the back of your card. You also need to enter the cardholder's address.

Q. Can I use my Checking or Savings Account to make a payment?

A. Yes, you can use your checking or savings account to make a payment. You will need to enter the Transit Routing Number, Account Number, and the Name on the account. You can find this information on a check or savings deposit slip (savings information should be verified with your bank).

Q. When will payments be credited to my account?

A. Payments made before 8:00 p.m. will be credited to your account the next business day.

Q. Do I have to enter my Bank Account or Card information every time I make a payment?

A. No, Online Bill Pay will save your bank account or card information if you setup a Login ID and password. If you login to Online Bill Pay with this Login ID and Password, you can use your saved bank account or card information to make a payment.

Q. I have two different accounts with Comfort Systems. Do I have to login to each account separately?

A. No, you can add more than one account to your Login ID. Go to the payees tab to add a new account. You will need the account number and the invoice amount (Amount Due from your Remittance Stub) to add the account. Once you have done this, you can view bills and make payments for the account.

Q. I setup a Login ID and Password last time I paid my bill, but I forgot my password.

A. If you setup challenge questions and answers, you can reset your own password. You can reset your password by selecting the Forgot your password link. You will be prompted for your Login ID and you will be presented with the challenge questions. if you answer them correctly, you can create a new password and use this to login. If you did not setup your challenge questions, you can call Comfort Systems at 218-730-4050 to have your password reset.

Q. I have a question about an online payment I made

A. An online payment can be searched by your account ID or by the payment reference number directly on the site at which you made the payment. If you have further questions, please call our office at 218-730-4050 during regular business hours.


Q. How often will I get a bill?

A. You will receive a bill each month, roughly 30 days apart.

Q. I just moved in. When will I get my first bill?

A. Depending on the date you moved in and the normal billing cycle for your area, it may be up to 6 weeks before you get you first bill.

Q. When is my bill due?

A. Your bill is due approximately 20 days after the billing date. The due date is always listed on your bill.

Q. What if I pay my bill late?

A. If your payment does not reach us prior to the next month’s billing, a penalty 1.33% will be charged on the outstanding balance.

Q. If my payment is returned is there a charge?

A. Yes, if your payment is returned for any reason, you will be charged a $30.00 fee.

Q. What are my payment options?

Pay Online: Through our third-party website Direct Biller.

Pay by Phone: Call our automated payment system at 1-866-533-5718

Pay by Mail: send check or money order to:

Comfort Systems
Bin 88900
Milwaukee, WI 53288-0900

Pay in Person: Visit our office location at:

Comfort Systems
520 Garfield Ave
Duluth, MN 55802


Q. How is my water measured?

A. The water that goes through your meter is measured by CCF, 100 cubic feet.

Q. What is a CCF equivalent to?

A. 748 gallons.

Q. How many gallons are in each “unit” of water?

A. There are 748 gallons of water in “unit”. This is also 1CCF or 100 cubic feet of water.

Q. How much water does a household normally use?

A. The standard is 3-5 CCF per person.

Q. Where is our water treated?

A. In the City of Duluth, the Water Treatment Plant draws water from Lake Superior, several miles east of the Lester River from a depth of about 55 m (180 ft), filters it to remove particulate material, disinfects it with chlorine, and then pumps it to reservoirs throughout the City.

Q. Who tests the water and how do I know it is safe to drink?

A. The Minnesota Department of Health(MDH) is responsible for ensuring a safe drinking water supply for Minnesotans under the provisions of the federal Safe Drinking Water Act (SDWA).

Q. My meter was damaged. Is there a charge?

A. Yes. If your meter is damaged, you will be charged for the cost of the meter and electronic reading device, if applicable. A labor charge will also apply.


Q. How do you measure what goes down the sewer?

A. What goes in, goes out. You are charged sewer on the basis of the amount of water that comes in through the water meter.


Q. Can I get my gas appliances serviced or repaired?

A. Yes you can. Visit our Appliance Service page for more information or call 218-730-4050 for an appointment.

Q. Do you offer 24 hour emergency service?

A. Yes we do. If your natural gas furnace is out or you smell gas after hours, please call 218-730-4100.


Q. What do I do if I smell gas?

A. Leave the building and call us at 218-730-4100. Do not light a match, use a phone, or flip any electrical switches on or off. Do not start a car. To be safe, don't do anything that could create a spark or ignite a flame.

24 Hour Emergency Numbers

Street, Water, Sewer:


Natural Gas:


811 - Know what's below. Call before you dig.

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520 Garfield Avenue | Duluth, Minnesota 55802
Phone: 218.730.4050