When replacing a furnace, boiler, or water heater in New Jersey, chimney certification isn’t optional—it’s required by law.
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Whether you’re buying a new home, selling your current one, or upgrading your heating system, having a certified chimney inspection on record is more than a formality, it’s a necessity. At 1 Hour Chimney, we provide official chimney certifications that document the condition of your chimney and verify that it meets safety, structural, and code compliance standards.
Our certified inspectionsare recognized by real estate agents, home inspectors, insurance companies, andbuilding authorities throughout the region. If your chimney passes inspection,you’ll receive a written certificate stating it’s safe to use.

















A chimney certification is a formal document issued by a licensed chimney inspector stating that the chimney or venting system is safe, structurally sound, and properly venting combustion gases. This certification is especially important in homes with gas or oil appliances.
You may need a chimney certification for:

The New Jersey Uniform Construction Code (NJUCC) requires chimney certification any time fuel-fired appliances are replaced or modified, including:

Many property owners and buyers assume a home inspection is enough. However, general inspectors do not have the tools or training to evaluate chimneys thoroughly. That’s where we come in.
You should request chimney certification if:
It’s a signed document from a certified chimney professional stating that your chimney is safe and compliant with NJ construction codes.
It’s required any time a fuel-fired appliance (furnace, boiler, or water heater) is replaced, or when switching fuel types (e.g., oil to gas).
We complete most inspections and submit the certification within 1 business day.
We’ll provide a detailed report and estimate for the necessary repairs. Once fixed, we’ll re-inspect and certify the system.
Typically for 1 year, unless you make changes to the chimney system or fuel source.