New Hampshire Domestic Appliance Technician License
What the Domestic Appliance Technician License Covers
The OPLC's Domestic Appliance Technician credential is one of the narrower licenses under the Mechanical Licensing Board — and one of the most misunderstood. It authorizes the holder to connect specified gas-fired residential appliances (ranges, dryers, outdoor cooking equipment, and pool heaters) to existing approved gas piping systems.
The critical word is "existing." This license does not authorize you to install, modify, or extend gas piping itself. That requires a fuel gas fitter credential. The domestic appliance technician connects the appliance to a gas outlet that's already in place, tests the connection, and verifies safe operation.
Think of it as the last six feet of a gas appliance installation — the flexible connector, the shutoff valve, and the appliance hookup — rather than the full piping run from meter to equipment.
Who Needs This License
The domestic appliance technician license fills a specific market niche: appliance delivery companies, property management firms, and general contractors who regularly connect gas appliances but don't perform gas piping work.
If you're a full-service HVAC contractor who already holds a fuel gas fitter license, the domestic appliance credential is redundant — your gas fitter license covers appliance connections and far more. The domestic appliance license exists for professionals whose work scope is limited to final appliance hookups.
Home inspectors and property managers also pursue this credential when they need to legally connect or disconnect gas appliances during property turnovers without calling in a licensed gas fitter for every range or dryer swap.
Requirements and Fees
The application uses the OPLC's Domestic Appliance Technician Checklist and requires:
- Completed application form
- Proof of relevant training or experience in gas appliance connections
- Passing score on the applicable examination
- Government-issued photo ID
- $170 initial application fee ($160 for biennial renewal)
The examination follows the same examination-first rule that applies to all OPLC mechanical credentials — you must pass the exam with an approved testing provider before submitting your license application. Applying without attaching exam scores results in the application being returned or denied.
Free Download
Get the New Hampshire — HVAC License Requirements Checklist
Everything in this article as a printable checklist — plus action plans and reference guides you can start using today.
How It Differs From Gas Fitter Credentials
The distinction between a domestic appliance technician and a fuel gas fitter is scope of practice, not skill level:
| Capability | Domestic Appliance Tech | Fuel Gas Fitter |
|---|---|---|
| Connect appliance to existing gas outlet | Yes | Yes |
| Install new gas piping | No | Yes |
| Modify existing gas piping | No | Yes |
| Service gas appliance internals | No | Yes (Service Tech tier) |
| Install hearth systems | No | Yes (Hearth specialty) |
| Supervise trainees | No | Yes (with appropriate tier) |
If your work scope might expand beyond simple appliance hookups — replacing a gas line, adding a new gas outlet for a relocated range, or servicing a gas furnace — you'll need the fuel gas fitter credential instead. The licensing ladder in the New Hampshire HVAC License Guide maps out the full progression from appliance tech through the gas fitter tiers.
Continuing Education and Renewal
Domestic appliance technicians fall under the same CE Broker mandate that covers all OPLC mechanical licensees. You'll need 6 hours of continuing education per biennial renewal cycle, with 3 hours of code updates annually, tracked through CE Broker.
Renewal is online through the OPLC portal. The renewal window opens no more than 60 days before expiration, and the application is due by the expiration date. Miss that deadline, and you're looking at the reinstatement process with its $170 fee instead of the standard $160 renewal.
The Business Entity Question
If you're connecting appliances as part of a business (delivery service, property management company, general contracting firm), the OPLC Mechanical Business Entity license may apply. The $250 business entity fee — with the sole-licensee exemption for solo operators — covers entities whose licensed staff hold any type of mechanical credential, including the domestic appliance technician license.
Whether the business entity license is required for your specific operation depends on how the work is structured. Independent sole proprietors doing occasional appliance connections may be exempt — consult with the OPLC board administrator to confirm your specific situation before assuming.
Get Your Free New Hampshire — HVAC License Requirements Checklist
Download the New Hampshire — HVAC License Requirements Checklist — a printable guide with checklists, scripts, and action plans you can start using today.