Water Heater Replacement — Alabama license requirements
01 The project
The starting point is the work itself — Water Heater Replacement in Alabama. The job determines which trades are involved, and the trades determine which license classifications may be required.
No project components are seeded for this project — we do not invent component lists without evidence.
02 Jurisdiction
This project is evaluated for Alabama — the five-board / two-threshold state. Non-residential work of $100,000 or more (pools $5,000) is the ALBGC general contractor layer; residential work over $10,000 (roofing over $2,500) is the HBLB home builder layer; and the electrical (AECB, ch. 36), plumbing/gas (PGFB, ch. 37) and HVAC/R (HACR, ch. 31) trades are licensed by their own boards. Alabama jurisdiction page.
Municipal building-permit and business-licence fees are set locally and were not read — LOCAL_AUTHORITY_REQUIRED. Alabama publishes a single confirmed contractor bond (the HVAC/R $20,000 performance bond) and no general contractor bond, so no other bond amount appears here to verify against. State requirements are not the complete story for any locality.
03 Trade → license
Relations below are recorded per state — only this jurisdiction's classifications are shown.
Trades involved: no seeded components — trade resolution follows from the classification relations below.
- May require PLB-MST — Master Plumber confirmed S-AL-PGFB-LAW rule AL-PLUMB-LICENSEDefault path: a water heater is plumbing work — a certified master/journeyman plumber performs it (§34-37-1). The owner may do it in their own home.
- Component basis PLB-JRN — Journeyman Plumber confirmed S-AL-PGFB-LAW rule AL-PLUMB-LICENSEWorker limb: journeyman plumber under a master.
- Alternative path GAS-MST — Master Gas Fitter confirmed S-AL-PGFB-FORMS rule AL-PLUMB-GASCONDITIONAL gas limb: if the replacement involves gas piping or a gas appliance, a PGFB gas fitter certificate applies (a minimum apprentice card to perform gas fitting).
- May require ELEC-CON — Electrical Contractor confirmed S-AL-AECB-LAW rule AL-ELEC-LICENSEElectrical limb: the circuit/connection is electrical work — an AECB electrical contractor licence is required (§34-36-13).
04 Scope
What the official sources say about the work involved — typed assertions, never a boolean "covers". Interpretations are marked as such.
- Officially included ELEC-CON Engaging In The Electrical Contracting Business (may_perform) Code of Alabama §34-36-13 S-AL-AECB-LAW Alabama licenses the electrical contractor business; the qualifying individual is a master electrician and journeymen hold individual certificates.
- Officially excluded ELEC-CON Requiring A Separate Local Electrical Contractor License For The Same Purpose (may_not_perform) Code of Alabama chapter 36, Title 34 S-AL-AECB-LAW CERTAINTY NOTE: the exclusivity clause was not fully extracted from the binary PDF — recorded as reported, not confirmed.
- Officially included PLB-MST Engaging In The Business Of Plumbing And Or Gas Fitting (may_perform) Code of Alabama §34-37-1; Administrative Code 720-X-17-.01 S-AL-PGFB-LAW Alabama certifies the individual plumber/gas fitter; there is no plumbing-contractor business licence.
- Requires another classification GAS-MST At Least An Apprentice Card To Perform Gas Fitting (requires) Code of Alabama §34-37-1; PGFB forms page S-AL-PGFB-FORMS Gas fitting has an explicit floor credential — the apprentice card.
05 Requirements
| Requirement | Kind | Statement | Source |
|---|---|---|---|
| Plumbers, gas fitters and medical gas piping fitters must be certified by the PGFB PGFB chapter 37 law PDF (§34-37-1) + Administrative Code 720-X-17-.01 — read 2026-10-05 | license | §34-37-1: the board 'shall examine, certify, and regulate plumbers, gas fitters, and medical gas piping fitters'. Certificates are individual (master, journeyman and apprentice). A person engaging in the business of plumbing and/or gas fitting within Alabama must register ANNUALLY on board forms (Administrative Code 720-X-17-.01). A master certificate is the business-holding credential; a journeyman works under a master; an apprentice works under supervision. | S-AL-PGFB-LAWSource S-AL-PGFB-LAW — Alabama State Plumbers and Gas Fitters Examining Board (PGFB)Alabama State Plumbers and Gas Fitters Examining Board — chapter 37, Title 34 (official law PDF) — PGFB chapter 37 law PDF (§34-37-1) + Administrative Code 720-X-17-.01 — read 2026-10-05 Retrieved 2026-10-05 · last verified 2026-10-05 Official board-published PDF of chapter 37 (read 2026-10-05 via official-domain metadata/snippet). §34-37-1 definitions: 'The board shall examine, certify, and regulate plumbers, gas fitters, and medical gas piping fitters…'; an APPRENTICE GAS FITTER OR PLUMBER is a person other than a master or journeyman holding a current annual certificate. §34-37-6: a journeyman applicant shows two years of current work experience. §34-37-9 sets the board's fees. RETRIEVAL LIMITATION: binary PDF — the certifications and the annual certificate are corroborated by the board home and forms pages. |
| A minimum Apprentice card is required to perform gas fitting PGFB forms page — read 2026-10-05 | license | The PGFB forms page states: 'A minimum of an Apprentice card is required in order to perform gas fitting.' Master and journeyman gas fitters use a board form to declare whether they perform or do not perform gas fitting. Gas fitting is a distinct certification from plumbing, administered by the same board. | S-AL-PGFB-FORMSSource S-AL-PGFB-FORMS — Alabama State Plumbers and Gas Fitters Examining Board (PGFB)Alabama PGFB — Forms and Applications — PGFB forms page — read 2026-10-05 https://pgfb.alabama.gov/forms/ Retrieved 2026-10-05 · last verified 2026-10-05 Read 2026-10-05. 'A minimum of an Apprentice card is required in order to perform gas fitting.' Master/journeyman gas fitters use a form to declare whether they perform or do not perform gas fitting. The board issues annual certificates. |
| No person may engage in electrical contracting or work as a master/journeyman electrician without an AECB license AECB chapter 36 law PDF (§34-36-12/13, §34-36-7) — read 2026-10-05 | license | §34-36-13 'License required; exemptions': no person shall engage in the electrical contracting business or perform work as a master or journeyman electrician without a licence from the Alabama Board of Electrical Contractors, subject to the section's exemptions. §34-36-7 requires every applicant for an electrical contractor or journeyman electrician licence to submit a completed application, application fee and supportive documentation of qualifications before taking the examination. A licence must be displayed (§34-36-12). | S-AL-AECB-LAWSource S-AL-AECB-LAW — Alabama Board of Electrical Contractors (AECB)Alabama Board of Electrical Contractors — chapter 36, Title 34 (official full-text law PDF) — AECB chapter 36 law PDF (§34-36-12/13, §34-36-7) — read 2026-10-05 https://aecb.alabama.gov/wp-content/uploads/2022/05/Section34LAW.pdf Retrieved 2026-10-05 · last verified 2026-10-05 Official board-published PDF of chapter 36 (read 2026-10-05 via official-domain metadata/snippet — the PDF is binary and not fully extractable by this harness, so facts are limited to what the board publishes in text elsewhere). Defines 'electrical contracting' and the JOURNEYMAN ELECTRICIAN ('A person who possesses necessary qualifications, training, and technical knowledge to install electrical wiring, apparatus, or equipment…'). §34-36-13 is the licence-required/exemptions section; §34-36-7 examinations with reciprocity; §34-36-12 display of licences. RETRIEVAL LIMITATION: binary PDF — the operative licence-required text is corroborated through the official Administrative Code filing (S-AL-ADMINCODE-303) and the board home (S-AL-AECB). |
| §34-14A-6 exemptions — subcontractors, owner-occupants, pre-1992 GCs, RE/engineers/architects, mobile homes, agricultural buildings HBLB exemptions page (§34-14A-6) — read in full 2026-10-05 | exemption | §34-14A-6 exempts: (1) subcontractors employed by a licensee (but a subcontractor hired by a homeowner claiming the homeowner exemption must be licensed if its portion exceeds $10,000); (2) employees of government entities; (3) general contractors who held a valid ALBGC licence before 1992 (number 18907 or below); (4) real estate licensees, licensed engineers and licensed architects within scope; (5) homeowners who build or improve their OWN residence for their own occupancy or use — a NONTRANSFERABLE privilege that is forfeited if the residence is offered for sale within one year of substantial completion (presumptive evidence of building for sale); (6) mobile homes / structures regulated by the Alabama Manufactured Housing Commission; (7) agricultural buildings (except any residence therein). | S-AL-HBLB-EXEMPTIONSSource S-AL-HBLB-EXEMPTIONS — Alabama Home Builders Licensure Board (HBLB)Home Builders Licensure Board — Exemptions (chapter 14A, Title 34) — HBLB exemptions page (§34-14A-6) — read in full 2026-10-05 https://hblb.alabama.gov/exemptions/ Retrieved 2026-10-05 · last verified 2026-10-05 Read in full 2026-10-05. §34-14A-6 exemptions: (1) subcontractors employed by a licensee (a subcontractor hired by a homeowner claiming the homeowner exemption MUST be licensed if the subcontractor's portion exceeds $10,000); (2) employees of government entities; (3) general contractors who held an ALBGC licence before January 1, 1992 (number 18907 or below); (4) real estate licensees, licensed engineers and licensed architects within scope; (5) homeowners who build/improve their OWN residence for their own occupancy/use (a nontransferable privilege — offering the residence for sale within one year of substantial completion violates the law and is presumptive evidence of building for sale); (6) mobile homes / structures regulated by the Alabama Manufactured Housing Commission; (7) agricultural buildings (except any residence therein). |
06 Rule: AL-PLUMB-LICENSE
§34-37-1: the PGFB shall examine, certify and regulate plumbers, gas fitters and medical gas piping fitters. Certificates are individual (master/journeyman/apprentice). A person engaging in the business of plumbing and/or gas fitting must register annually (Administrative Code 720-X-17-.01). Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| certification-required | plumbing_certification_required |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-AL-PGFB-LAWS-AL-ADMINCODE-720
07 Rule: AL-PLUMB-GAS
The PGFB certifies gas fitters as well as plumbers; 'a minimum of an Apprentice card is required in order to perform gas fitting'. Master and journeyman gas fitter certificates authorise engaging in the gas-fitting business/working under a master, requiring annual registration. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| gas-fitting | gas_fitting_certification_required |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-AL-PGFB-FORMSS-AL-PGFB-LAW
08 Rule: AL-ELEC-LICENSE
§34-36-13: no person shall engage in the electrical contracting business or perform work as a master or journeyman electrician without a licence from the Alabama Board of Electrical Contractors, subject to the section's exemptions. The business credential is the electrical contractor licence (with a qualifying master electrician); a journeyman holds an individual certificate. Missing facts yield NOT_DETERMINED.
| Outcome | Conclusion | Caveats |
|---|---|---|
| license-required | electrical_contractor_license_required |
|
| exception | electrical_license_exception |
|
Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-AL-AECB-LAWS-AL-ADMINCODE-303
09 The plumbing default and the gas and electrical limbs
| Question | Alabama answer | Source |
|---|---|---|
| Default credential | a water heater is plumbing work — a certified master/journeyman plumber (§34-37-1) | S-AL-PGFB-LAW |
| Owner on their own residence | the §34-14A-6(5) homeowner exemption covers the owner's own residence (nontransferable; sale within one year forfeits) | S-AL-HBLB-EXEMPTIONS |
| Gas limb | a PGFB gas fitter certificate applies to gas piping/appliance work — a minimum apprentice card to perform gas fitting | S-AL-PGFB-FORMS |
| Electrical connection | the circuit/connection is electrical work — an AECB electrical contractor licence (§34-36-13) | S-AL-AECB-LAW |
| Building permit | municipal — issued and inspected locally (rule AL-LOCAL-PERMIT) | S-AL-GC-LAW |
10 Permit and verification layer
Alabama separates the credential from the permit: the STATE boards decide who may work (the ALBGC / HBLB / AECB / PGFB / HACR licences and certificates), while the municipal building department issues the building permit and the city/county issues a business licence. §34-8-9 ties building-permit issuance for covered work to the state licensure framework. Permit and business-licence fees are set locally and were not read — LOCAL_AUTHORITY_REQUIRED. S-AL-GC-LAW
Verify the credential that actually applies on the official lookup before relying on any outcome here. S-AL-CODE-34-8-2
Source S-AL-HACR-BOND — Alabama Legislature — Code of Alabama 1975 (ALISON) & Alabama Administrative Code
Alabama Administrative Code rule 440-X-3-.04 — Forms of licensing (HACR performance bond) — Administrative Code 440-X-3-.04(5) — read 2026-10-05
https://admincode.legislature.state.al.us/administrative-code/440-X-3-.04
Retrieved 2026-10-05 · last verified 2026-10-05
Read 2026-10-05 (Administrative Code chapter 440-X, Alabama Board of Heating, Air Conditioning and Refrigeration Contractors). Rule 440-X-3-.04(5): 'All new heating and air conditioning, or refrigeration contractor applicants must provide a performance bond in the amount of Twenty Thousand Dollars ($20,000).' Also defines the forms of licensing (business licence + qualifying individual). NOTE: some commercial surety pages circulate a $15,000 figure — the official rule states $20,000 (CONFLICT-AL-002).