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New Hampshire HVAC License Renewal: Deadlines, Fees and CE

New Hampshire has 3 HVAC license classes. Most renew every 2 years. Renewal fees are about $50 to $198, depending on the class. Fees change, so check the official site for the exact amount. Continuing education is 6 hours. The details for each class are below.

Full rule details
Verified dataLast checked Oct 17, 2026, next review due July 2027

Informational: verify with the issuing board.

Remind me before it expiresHow reminders work

Domestic Appliance Technician

Domestic Appliance Technician · State license · OPLC - Mechanical Licensing Board (Mechanical Safety and Licensing Board)

Remind me before this expires
Renew on the official siteBoard phone: (603) 271-2152
Renewal cycle
Every 2 years
Continuing education
6 hours
Show CE rulesAt least 6 hours of continuing education for each plumbing or fuel gas fitting endorsement in every 2-year licensing cycle, from a Board-approved seminar provider (Mec 404.01). Seminars are at least 3 contact hours each, in a classroom, on the NH-adopted plumbing or fuel gas codes and the current licensing laws and rules (Mec 404.03). Apprentices and trainees instead show continued enrollment in their education program.
Deadline rule
License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal.
Show fees, grace period, bond and insurance
Grace period
None. A license not renewed by the expiration date is expired, and working on it is a violation of RSA 153:37 until it is reinstated (Mec 402.01).

Fees, approximate

Renewal fee
About $176
Late fee
Show the details (amounts are approximate)No separate monthly late fee. A renewal filed after expiration but within one year is processed as a reinstatement for the listed fee, which equals the renewal fee (Plc 1001.13; Plc 1002.25). Individual licenses expired 12 months or more pay a $350 reinstatement fee (Mec 501.05).
Reinstatement
Show the details (amounts are approximate)Expired less than 365 days: apply for reinstatement with proof of continuing education and the reinstatement fee (Mec 405.02(a)). Expired 365 days or more: the applicable licensing exam must be retaken and passed before reinstatement (Mec 405.02(b)).

Fees change. Check the official site for the exact amount.

Why approximate?

Boards change fees often and some charge extra processing fees. We show a recent amount so you can plan.

Bond
Not required
Insurance
Not required
Reciprocity
Licensure by endorsement is available under RSA 310:17 and Plc 313 (Plc 313.34 covers the Mechanical Licensing Board professions).
Notes

Fee is $176 for the 2-year term whether initial, renewal or reinstatement (effective July 1, 2025). Hearth system installation and service technician license is $198.

Confidence: HighConfirmed from official rule textLast checked Oct 17, 2026
Sources (6)

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Fuel Gas Fitter (Piping Installer / Installation Technician / Service Technician)

Fuel Gas Fitter · State license · OPLC - Mechanical Licensing Board (Mechanical Safety and Licensing Board)

Remind me before this expires
Renew on the official siteBoard phone: (603) 271-2152
Renewal cycle
Every 2 years
Continuing education
6 hours
Show CE rulesAt least 6 hours of continuing education for each plumbing or fuel gas fitting endorsement in every 2-year licensing cycle, from a Board-approved seminar provider (Mec 404.01). Seminars are at least 3 contact hours each, in a classroom, on the NH-adopted plumbing or fuel gas codes and the current licensing laws and rules (Mec 404.03). Apprentices and trainees instead show continued enrollment in their education program.
Deadline rule
License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal.
Show fees, grace period, bond and insurance
Grace period
None. A license not renewed by the expiration date is expired, and working on it is a violation of RSA 153:37 until it is reinstated (Mec 402.01).

Fees, approximate

Renewal fee
About $198
Late fee
Show the details (amounts are approximate)No separate monthly late fee. A renewal filed after expiration but within one year is processed as a reinstatement for the listed fee, which equals the renewal fee (Plc 1001.13; Plc 1002.25). Individual licenses expired 12 months or more pay a $350 reinstatement fee (Mec 501.05).
Reinstatement
Show the details (amounts are approximate)Expired less than 365 days: apply for reinstatement with proof of continuing education and the reinstatement fee (Mec 405.02(a)). Expired 365 days or more: the applicable licensing exam must be retaken and passed before reinstatement (Mec 405.02(b)).

Fees change. Check the official site for the exact amount.

Why approximate?

Boards change fees often and some charge extra processing fees. We show a recent amount so you can plan.

Bond
Not required
Insurance
Not required
Reciprocity
Licensure by endorsement is available under RSA 310:17 and Plc 313 (Plc 313.34 covers the Mechanical Licensing Board professions).
Notes

NH has no general statewide HVAC license. Heating and cooling work involving fuel gas is licensed as fuel gas fitting; refrigeration/AC-only work has no state license. Hearth system installers also pay $198. Fuel gas fitting trainee registration is $88. Fuel gas businesses also need the Mechanical Business Entity license ($275).

Confidence: HighConfirmed from official rule textLast checked Oct 17, 2026
Sources (6)

Oil Heating Technician Certification (voluntary)

Oil Heating · State registration · OPLC - Mechanical Licensing Board (Mechanical Safety and Licensing Board)

Remind me before this expires
Renew on the official siteBoard phone: (603) 271-2152
Renewal cycle
Every 2 years
Continuing education
Not required
Deadline rule
License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal.
Show fees, grace period, bond and insurance
Grace period
None. A license not renewed by the expiration date is expired, and working on it is a violation of RSA 153:37 until it is reinstated (Mec 402.01).

Fees, approximate

Renewal fee
About $50
Late fee
Show the details (amounts are approximate)No separate monthly late fee. A renewal filed after expiration but within one year is processed as a reinstatement for the listed fee, which equals the renewal fee (Plc 1001.13; Plc 1002.25). Individual licenses expired 12 months or more pay a $350 reinstatement fee (Mec 501.05).
Reinstatement
Show the details (amounts are approximate)Expired less than 365 days: apply for reinstatement with proof of continuing education and the reinstatement fee (Mec 405.02(a)). Expired 365 days or more: the applicable licensing exam must be retaken and passed before reinstatement (Mec 405.02(b)).

Fees change. Check the official site for the exact amount.

Why approximate?

Boards change fees often and some charge extra processing fees. We show a recent amount so you can plan.

Bond
Not required
Insurance
Not required
Reciprocity
Licensure by endorsement is available under RSA 310:17 and Plc 313 (Plc 313.34 covers the Mechanical Licensing Board professions).
Notes

Voluntary certification for installing, or servicing and repairing, heating systems using fuel oil. Fee is $50 for the 2-year term (initial, renewal or reinstatement) per certification type (effective July 1, 2025). Not required to work in NH.

Confidence: MediumMostly confirmed from official pages, some details are older or partly confirmedLast checked Oct 17, 2026
Sources (6)

The hours, required topics, approved providers and reporting rules for each license are on the New Hampshire HVAC continuing education page.

How to renew

  1. 1Check your Domestic Appliance Technician deadline: License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal.
  2. 2Complete 6 continuing education hours before renewing. At least 6 hours of continuing education for each plumbing or fuel gas fitting endorsement in every 2-year licensing cycle, from a Board-approved seminar provider (Mec 404.01). Seminars are at least 3 contact hours each, in a classroom, on the NH-adopted plumbing or fuel gas codes and the current licensing laws and rules (Mec 404.03). Apprentices and trainees instead show continued enrollment in their education program.
  3. 3Renew online at https://forms.nh.gov/license/Login.aspx
  4. 4Pay the renewal fee on the official site. Expect about $176, but fees change.
  5. 5If you miss the deadline: No separate monthly late fee. A renewal filed after expiration but within one year is processed as a reinstatement for the listed fee, which equals the renewal fee (Plc 1001.13; Plc 1002.25). Individual licenses expired 12 months or more pay a $350 reinstatement fee (Mec 501.05).
  6. 6Check your Fuel Gas Fitter (Piping Installer / Installation Technician / Service Technician) deadline: License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal.
  7. 7Pay the renewal fee on the official site. Expect about $198, but fees change.
  8. 8Check your Oil Heating Technician Certification (voluntary) deadline: License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal.
  9. 9Pay the renewal fee on the official site. Expect about $50, but fees change.

New Hampshire HVAC renewal questions

Answers come from the records above. Informational: verify with the issuing board.

When does a New Hampshire HVAC license expire?

Domestic Appliance Technician: renews every 2 years. License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal. Fuel Gas Fitter (Piping Installer / Installation Technician / Service Technician): renews every 2 years. License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal. Oil Heating Technician Certification (voluntary): renews every 2 years. License is valid for 2 years and expires on the last day of the month in which it was issued (Mec 402.01; RSA 310:8, II). Renewal must be filed online with the fee and CE proof on or before the expiration date, and not more than 60 days before it. OPLC sends a reminder at least 2 months ahead, but not receiving it does not excuse a late renewal. Check with OPLC - Mechanical Licensing Board (Mechanical Safety and Licensing Board) before you rely on it.

How many CE hours does a New Hampshire HVAC license need?

Domestic Appliance Technician: 6 hours per renewal. Fuel Gas Fitter (Piping Installer / Installation Technician / Service Technician): 6 hours per renewal. Oil Heating Technician Certification (voluntary): no CE required. Check with OPLC - Mechanical Licensing Board (Mechanical Safety and Licensing Board) before you rely on it.

Is there a grace period for a New Hampshire HVAC license?

None. A license not renewed by the expiration date is expired, and working on it is a violation of RSA 153:37 until it is reinstated (Mec 402.01). Check with OPLC - Mechanical Licensing Board (Mechanical Safety and Licensing Board) before you rely on it.

How much does it cost to renew a New Hampshire HVAC license?

Domestic Appliance Technician: About $176. Fees change. Check the official site for the exact amount.

What happens if a New Hampshire HVAC license expires?

No separate monthly late fee. A renewal filed after expiration but within one year is processed as a reinstatement for the listed fee, which equals the renewal fee (Plc 1001.13; Plc 1002.25). Individual licenses expired 12 months or more pay a $350 reinstatement fee (Mec 501.05). Fees change. Check the official site for the exact amount.

Does New Hampshire accept HVAC licenses from other states?

Licensure by endorsement is available under RSA 310:17 and Plc 313 (Plc 313.34 covers the Mechanical Licensing Board professions). Check with OPLC - Mechanical Licensing Board (Mechanical Safety and Licensing Board) before you rely on it.

Sources

Spot something out of date?

Informational only. Check it with the issuing board. Licensing rules, deadlines and CE requirements change, fee amounts are approximate, and this page can be out of date. It is not legal advice, and we are not affiliated with any state board. Read the disclaimer.

This information is here to help you plan, not to replace the board. Fee amounts are approximate and may be out of date. Deadlines and continuing education rules change too, sometimes without much notice. Always confirm with your licensing board and its official site before you rely on a date or an amount. This is not legal advice.

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