MaintainlyHow often does a boiler need an efficiency check in Italy?
Boiler efficiency check (bollino) every 4 years. The commonly recommended range is every 4 years for gas boilers of 10 to 100 kW, every 2 for solid or liquid fuel. It is a legal requirement, and regional inspectors can fine a home without a valid check in the libretto. It is seasonal work, best done in autumn / fall.
Italian heating systems carry two separate duties under DPR 74/2013. Routine maintenance follows the schedule in the installer’s instructions or, failing that, the manufacturer’s. On top of that, heating systems above 10 kW need a periodic energy efficiency check, with a signed report sent to the region. Some regions add a stamp called the bollino.
Why does a boiler efficiency check matter?
It is a legal requirement, and regional inspectors can fine a home without a valid check in the libretto.
What happens if you skip a boiler efficiency check?
The report from each check is kept with the libretto di impianto, and regional inspection bodies can verify it. Under Legislative Decree 192/2005, an owner or occupier who skips the required checks and maintenance faces a fine of 500 to 3,000 euros. An inefficient boiler also costs more to run every winter.
What does the professional actually do?
- Carries out the efficiency check during a maintenance visit
- Fills in and signs the rapporto di controllo di efficienza energetica
- Leaves one copy to keep with the libretto di impianto
- Sends the other copy to the address set by the region or autonomous province, usually electronically
How do you choose someone qualified?
Maintenance and checks must be done by a firm qualified under Ministerial Decree 37/2008. Ask for your copy of the report, and for the regional stamp where your region uses one, and keep the libretto with the boiler.
What changes how often you need to do it?
- Fuel and output: gas, methane or LPG boilers above 10 kW and below 100 kW every 4 years; liquid or solid fuel every 2
- Larger systems of 100 kW or more: every 2 years for gas, every year for liquid or solid fuel
- Electric heat pumps and chillers above 12 kW and below 100 kW: every 4 years
- Regional rules, which can set different intervals and fees
- A new check is also due at first start-up and after the heat generator is replaced
When should you stop and call someone?
Always. The check must be done and reported by a qualified firm.
Does this differ in the US, UK, Australia or Canada?
United States
There is no equivalent legal check. Follow the boiler or furnace manufacturer’s service schedule.
United Kingdom
There is no efficiency check requirement for homeowners. Landlords must have a registered engineer carry out a gas safety check every year.
Australia
There is no equivalent legal check. Gas appliances should be serviced by a licensed gasfitter.
Canada
There is no equivalent legal check. Gas appliances should be serviced by a licensed gas technician.
What about in Europe?
Italy
DPR 74/2013, Annex A: efficiency check every 4 years for gas boilers above 10 kW and below 100 kW, and every 2 years for liquid or solid fuel. Regions and autonomous provinces can set their own rules and fees.
Frequently asked questions
Why does a boiler efficiency check matter?
It is a legal requirement, and regional inspectors can fine a home without a valid check in the libretto.
What happens if you skip a boiler efficiency check?
The report from each check is kept with the libretto di impianto, and regional inspection bodies can verify it. Under Legislative Decree 192/2005, an owner or occupier who skips the required checks and maintenance faces a fine of 500 to 3,000 euros. An inefficient boiler also costs more to run every winter.
Does a boiler efficiency check differ by country?
Italy: DPR 74/2013 requires a periodic energy efficiency check (controllo di efficienza energetica) on top of routine maintenance: every 4 years for gas boilers of 10 to 100 kW and every 2 years for solid or liquid fuel. Regions can set different rules. The technician records it in the libretto di impianto.
When in the year is a boiler efficiency check best done?
This is seasonal work. Plan it for autumn / fall, before the weather it protects against arrives.
How we put this together
The figures, intervals and legal points on this page were checked against the sources listed below. The default interval and accepted range are the ones Maintainly uses in its task library. Costs and times are typical ranges and vary by region and by home. Your own manufacturer's instructions come first, and gas, electrical and structural work belongs with a qualified professional. How we research and write.
Sources
- Decreto del Presidente della Repubblica 16 aprile 2013, n. 74, art. 7, Normattiva (Istituto Poligrafico e Zecca dello Stato). Checked 11 October 2026.
- Decreto del Presidente della Repubblica 16 aprile 2013, n. 74, art. 8, Normattiva (Istituto Poligrafico e Zecca dello Stato). Checked 11 October 2026.
- Allegato A - DPR 74/2013 (testo Normattiva), Provincia di Asti. Checked 11 October 2026.
- Ispezioni e rapporto di controllo, ENEA and Regione Puglia (Catasto Impianti Termici). Checked 11 October 2026.
- Private renting: Your landlord’s safety responsibilities, GOV.UK. Checked 11 October 2026.
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