The short answer: As of October 29, 2026, Neighborhood Registry has read the license record of every HVAC contractor ranked below at Texas Department of Licensing and Regulation and found each license Active. 9 HVAC contractors on the Plano service roster hold licenses we checked in October 2026; 7 are ranked here. One fact stated up front: no Plano HVAC contractor has claimed a Registry profile yet, so every name below sits in the License-Checked tier — licenses verified at the authority, profiles not yet maintained by the pros. The first Plano HVAC contractor to claim and verify a profile takes the top tier in the next edition, under the same published rules. Until then, this page is the only Plano HVAC contractor ranking that prints the license number and check date behind every name.
The ranking — October 2026 edition
1. Welch Air Conditioning Company
Rank basis: License-Checked tier; appears on the Plano service roster (Plano); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Licensing and Regulation #10518 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Plano (Plano service roster).
Registry profile
2. G’n’r Plumbing & Air LLC
Rank basis: License-Checked tier; appears on the Plano service roster (Plano); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Licensing and Regulation #100978 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Plano (Plano service roster).
Registry profile
3. 3 PILLARS MECHANICAL, LLC
Rank basis: License-Checked tier; appears on the Plano service roster (Plano); checked October 18, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Licensing and Regulation #100093 — Active, read directly at the authority. Last checked: October 18, 2026.
Area served: Plano (Plano service roster).
Registry profile
4. Bb Air & Heat Services LLC
Rank basis: License-Checked tier; appears on the Plano service roster (Plano); checked October 18, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Licensing and Regulation #16628 — Active, read directly at the authority. Last checked: October 18, 2026.
Area served: Plano (Plano service roster).
Registry profile
5. Comfort Mechanical Inc.
Rank basis: License-Checked tier; appears on the Plano service roster (Plano); checked October 18, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Licensing and Regulation #107085 — Active, read directly at the authority. Last checked: October 18, 2026.
Area served: Plano (Plano service roster).
Registry profile
6. Crescent Air Heating And Cooling LLC
Rank basis: License-Checked tier; appears on the Plano service roster (Plano); checked October 18, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Licensing and Regulation #94307 — Active, read directly at the authority. Last checked: October 18, 2026.
Area served: Plano (Plano service roster).
Registry profile
7. D-N-A PLUMBING, HEATING AND AIR LLC
Rank basis: License-Checked tier; appears on the Plano service roster (Plano); checked October 18, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Licensing and Regulation #118109 — Active, read directly at the authority. Last checked: October 18, 2026.
Area served: Plano (Plano service roster).
Registry profile
Also license-checked in Plano, not ranked in this edition: 2 more HVAC contractors on the Plano service roster hold licenses we read and found Active in October 2026 — Polar Bear HVAC Services LLC, Trotter Air Services LLC.
How this ranking works
Most “best HVAC contractors in Plano” lists are assembled from advertising placements and review counts copied from other websites. This ranking is assembled from exactly one thing: the license record at the issuing authority, read directly by Neighborhood Registry.
- Eligibility. A HVAC contractor is eligible only if we have read their record in the authority’s own system and found the license Active. No one can pay to be listed, apply for a rank, or be added by request.
- Tier A — Verified & Claimed. The license is verified at the authority and the pro has claimed their Registry profile, confirmed their details, and maintains it. Tier A always ranks above Tier B.
- Tier B — License-Checked. We have read the license at the authority and found it Active, but the pro has not yet claimed their profile.
- Order inside a tier is mechanical and published: (1) neighborhood seats held in Plano; (2) most recent authority check; (3) time on the Registry (first-verified date); (4) alphabetical. Every input to every score is printed in the entries above.
- Freshness. Licenses are re-checked weekly and formally re-verified every 12 months. A license that lapses or is suspended removes the pro from this ranking at the next re-check — not at the next edition. This page is re-issued monthly; this is the October 2026 edition, built from checks dated October 2026.
Full method: How We Verify — Every check is written to the public verification ledger.
How to verify a Texas HVAC contractor’s license
Use the Texas Department of Licensing and Regulation license search at tdlr.texas.gov: search by business name or license number and confirm the Air Conditioning and Refrigeration Contractor license is current. In Texas the HVAC contractor license is held by the business, and installation, replacement, and repair work offered to the public must be performed under that license; the license number belongs on invoices and proposals.
Plano, in numbers
- Population: 293,028 estimated July 1, 2025, up from 285,494 at the April 1, 2020 Census (U.S. Census Bureau QuickFacts V2025, Plano city, Texas). Median value of owner-occupied housing units: $465,900 (Census QuickFacts, 2020-2024). Plano is mostly in Collin County, with southern portions in Dallas County and a small portion in Denton County.
- Schools: five districts serve addresses inside Plano — Plano ISD covers most of the city (TEA 2025 overall rating: B), Frisco ISD serves the northern edge (TEA 2025: A), Allen ISD serves a northeastern edge (TEA 2025: A), Dallas ISD serves a southern edge in the Dallas County portion (TEA 2025: B), and Lewisville ISD serves a western edge. District boundaries do not follow city limits — verify the district and campuses for a specific address with the district or the county appraisal district.
- Taxes: there is no single Plano rate — the total depends on the parcel’s county and school district. Worked example for tax year 2026, Collin County parcel in Plano ISD, per $100 of taxable value: Plano ISD $1.03275 + City of Plano $0.4376 (adopted rate, held flat for FY2026-27) + Collin County $0.151414 + Collin College $0.08122 = $1.702984 per $100, with no MUD (Collin County FY2027 tax-rate presentation, four-entity table). Parcels in other districts substitute that district’s rate; the Dallas County portion stacks Dallas County entities, and its 2026 total is not stated here because Dallas County’s 2026 rate was unsettled pending the November 3, 2026 election at the October 2026 fact check. Confirm the entities and rates for a specific parcel with the Collin Central Appraisal District, Dallas Central Appraisal District, or Denton Central Appraisal District, as applicable. Some developments also carry per-parcel public improvement district (PID) assessments, which are never blended into a citywide rate.
- On this Registry: 9 HVAC contractors serving Plano hold licenses read at the authority in October 2026; the HVAC contractor seat is unclaimed.
Frequently Asked Questions
Who is the best license-verified HVAC contractor in Plano, Texas?
As of October 29, 2026, Neighborhood Registry has license-checked 9 HVAC contractors serving Plano at Texas Department of Licensing and Regulation, all Active. The top-ranked are Welch Air Conditioning Company (TDLR #10518), G’n’r Plumbing & Air LLC (TDLR #100978), 3 PILLARS MECHANICAL, LLC (TDLR #100093). No Plano HVAC contractor has claimed a Registry profile yet, so all are ranked in the License-Checked tier under a published methodology.
How do I verify a Texas HVAC contractor’s license?
Use the Texas Department of Licensing and Regulation license search at tdlr.texas.gov: search by business name or license number and confirm the Air Conditioning and Refrigeration Contractor license is current. In Texas the HVAC contractor license is held by the business, and installation, replacement, and repair work offered to the public must be performed under that license; the license number belongs on invoices and proposals. Neighborhood Registry reads the same record and writes every check to its public verification ledger.
Who is licensed to work on a Texas home’s HVAC system?
The business must hold a Texas Air Conditioning and Refrigeration Contractor license from TDLR, and the work must be performed under the licensed contractor of record. The contractor license behind every name on this page was read at TDLR and found current in October 2026. An unlicensed handyman is not a legal substitute for a system replacement, whatever the quote says.
What should a Plano homebuyer know about local taxes and schools?
Five school districts serve Plano addresses: Plano ISD, which covers most of the city, earned a B in TEA’s 2025 ratings, Frisco ISD and Allen ISD earned A’s at the northern and northeastern edges, and Dallas ISD earned a B at the southern edge — verify the district for a specific address with the district or the county appraisal district. For taxes, a Collin County home in Plano ISD pays $1.702984 per $100 for tax year 2026 (Plano ISD $1.03275 + City of Plano $0.4376 + Collin County $0.151414 + Collin College $0.08122, no MUD), but other districts and the Dallas and Denton County portions stack differently, so confirm the parcel’s entities with its county appraisal district before relying on any total.
Sources
- Texas Department of Licensing and Regulation license records for every ranked HVAC contractor (license numbers and check dates printed above), read October 2026; Neighborhood Registry verification ledger.
- U.S. Census Bureau QuickFacts V2025, Plano city, Texas (population estimate July 1, 2025; median owner-occupied value, 2020-2024).
- Texas Education Agency 2025 accountability ratings (Plano ISD, Frisco ISD, Allen ISD, Dallas ISD district records).
- Collin County FY2027 tax-rate public hearing presentation and Notice About 2026 Tax Rates (tax year 2026 four-entity Collin County / Plano ISD stack); City of Plano FY2026-27 adopted budget (city rate $0.4376 held flat); Collin College 2026 rate adoption.
- Neighborhood Registry Plano fact build, October 2026.