Green Sticker Guide

A Green Sticker is an adhesive sticker placed on your space and water-heating natural gas appliances by a licensed and qualified heating contractor. The Green Sticker verifies these natural gas appliances have been properly derated (adjusted) to safely burn natural gas at your altitude.

A Green Sticker adjustment is necessary because most natural gas-fired furnaces and water heaters in our service area need to be derated to operate safely and efficiently at different altitudes.

No.

You should have a Green Sticker adjustment done as soon as possible, preferably in connection with your annual inspection. Customers can save money by combining the Green Sticker adjustment with a normal appliance safety inspection, which should be done annually by a licensed and qualified contractor.

Natural gas is a safe, dependable and economical energy source. If your appliances are not properly adjusted, they may not operate safely. Improperly adjusted appliances could result in natural gas not being burned correctly, which may produce excess carbon monoxide. Under certain conditions, especially without proper ventilation, carbon monoxide could be released into your home. Carbon monoxide is an invisible, odorless and tasteless gas that is poisonous and can cause serious injury or, in extreme cases, even death.

The symptoms of carbon monoxide poisoning are:

• Persistent, severe headaches usually affecting more than one family member;
• Nausea, vomiting and weakness;
• The disappearance of symptoms when individuals leave the house.

If you suspect the presence of carbon monoxide in your home based on symptoms exhibited by family members, open windows and/or doors, and evacuate all persons from your home to avoid continued exposure. Call 911 and poison control and have your home inspected as soon as possible to identify and fix the source of the carbon monoxide.

The inspection and possible adjustment involve checking and, if necessary, changing an orifice in the appliance burner and/or changing the manifold pressure that governs the mixture of air and natural gas needed for proper and complete fuel combustion. It is also important that the flue gas is checked to verify carbon monoxide limits are within proper range for each appliance.

Natural gas space and water-heating appliances need to be inspected and, if necessary, adjusted by a licensed and qualified heating contractor. Once these appliances are inspected and properly adjusted, customers should make sure the contractor performing the inspection applies a Green Sticker to any appliance requiring an adjustment for altitude for future reference. While Green Stickers are not needed for other natural gas appliances, Enbridge Gas continues to stress the importance of regular maintenance and annual checkups for all natural gas appliances.

The only way to be certain that your appliances are properly adjusted is to have them inspected by a licensed and qualified heating contractor. It is every customer’s responsibility to have their natural gas space and water-heating appliances inspected and, if necessary, properly adjusted to ensure safe operation. Enbridge Gas has recommended that installers, manufacturers and appliance-service contractors apply a Green Sticker to space and water-heating appliances that are properly installed and adjusted for altitude.

If appliances do not have a Green Sticker, you should have a licensed and qualified heating contractor inspect them, make any necessary adjustments and apply a Green Sticker on each appliance for future reference.

Yes. Enbridge Gas recommends that customers have all their natural gas appliances checked annually. If you follow this practice, your next regularly scheduled inspection is a good time to make sure your natural gas space and water-heating appliances are properly adjusted and have a Green Sticker.

A licensed and qualified heating contractor will be able to perform the inspection and make any necessary adjustments.

Our customer service employees are working to keep natural gas flowing to homes and businesses and helping in emergencies. Adding to our workforce would cost customers more. Enbridge Gas keeps working to control costs so you can enjoy safe, reliable service at rates that are among the lowest in the nation. Adapting to the appliance settings recommended by the manufacturer and Enbridge Gas and approved by the Public Service Commission (PSC) for your area will help Enbridge Gas keep natural gas costs down.