Tyler County, Texas
HVAC Code Checklist

Make sure your hvac work meets local building codes before the inspector comes out. Covers Tyler County requirements based on Texas IRC 2021 + local amendments.

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What's in the checklist

Equipment Installation

✅HVAC equipment must have minimum 30 inches of clearance on the service side for access (min 30 inch)IMC 304.4
✅Outdoor condensing unit must be installed on a level concrete pad or approved equivalentIMC 304.1
✅Condensate drain must be at least 3/4 inch PVC or approved material with a proper P-trapIMC 307.2.2
✅HVAC equipment rating plate must be legible and accessible for inspectionIMC 305.2

Ductwork

✅Duct joints and seams must be sealed with mastic or approved tape (UL 181 rated)IECC R403.3.2
✅Supply and return ducts in unconditioned spaces must be insulated to minimum R-8 (supply) or R-6 (return) (min 6 R-value)IECC R403.3.1
✅Return air duct sizing must provide adequate airflow for the equipment capacityIRC M1602.1
✅Duct support spacing must not exceed 5 feet for horizontal runs and 12 feet for vertical runs (max 5 feet)IMC 603.10

Ventilation

✅Outdoor air intake must be located at least 10 feet from contamination sources, exhaust outlets, or plumbing vents (min 10 feet)IMC 401.4
✅Bathroom exhaust fans must provide minimum 50 CFM intermittent or 20 CFM continuous (min 20 CFM)IRC M1507.4
✅Kitchen range hood must provide minimum 100 CFM intermittent exhaust (min 100 CFM)IRC M1503.4
✅Combustion air must be provided for fuel-burning HVAC equipment per calculated requirementsIMC 701.1

Refrigerant Lines

✅Refrigerant suction line must be insulated with minimum 3/4 inch closed-cell insulationIMC 1101.9
✅Refrigerant line set must not exceed manufacturer-specified maximum equivalent lengthIMC 1101.7
✅Suction line must slope downward toward the compressor at minimum 1/4 inch per foot for oil returnIMC 1101.8
✅Refrigerant piping must be protected from physical damage with guards or placementIMC 1101.6

Thermostats & Controls

✅Thermostat must be mounted at 48 to 60 inches above finished floor, away from heat sources (48-60 inch)IRC M1307.1
✅New construction must have a programmable thermostat capable of maintaining setpointsIECC R403.1.1
✅Heat pump auxiliary heat must be locked out when outdoor temperature is above the set thresholdIECC R403.1.2
✅Zone damper systems must have a bypass duct or dump zone to prevent excessive static pressureIMC 606.3

Based on Texas IRC 2021 + local amendments. This checklist reflects state-level code requirements — always consult the local Authority Having Jurisdiction (AHJ) for any county-specific amendments before construction.

Frequently asked questions

Does a hvac project in Tyler County need a permit?

Most hvac work in Tyler County, Texas requires a building permit before construction. CodeCheckHQ helps you verify your work meets Texas IRC 2021 + local amendments requirements before the inspector arrives.

What codes apply to Tyler County hvac work?

Tyler County follows Texas IRC 2021 + local amendments with local amendments. CodeCheckHQ checklists are derived from these codes and reflect state-level modifications.

How long does a hvac inspection take in Tyler County?

A typical hvac inspection in Tyler County takes 30-60 minutes. Pre-walk the CodeCheckHQ checklist to identify and fix issues before scheduling.

Can I use CodeCheckHQ for a Tyler County hvac self-inspection?

Yes. CodeCheckHQ is a pre-inspection self-audit tool — not a replacement for the official AHJ inspection. Use it to catch issues early; official approval must come from a licensed inspector.

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Tyler County building code requirements in plain English. Mark each item Pass, Fail, or N/A. Get a PDF report.

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Tyler County, TexasHVAC Code Checklist

What's in the checklist

Equipment Installation

Ductwork

Ventilation

Refrigerant Lines

Thermostats & Controls

Frequently asked questions

Does a hvac project in Tyler County need a permit?

What codes apply to Tyler County hvac work?

How long does a hvac inspection take in Tyler County?

Can I use CodeCheckHQ for a Tyler County hvac self-inspection?

Don't guess. Check it now.

Tyler County, TexasHVAC Code Checklist

What's in the checklist

Equipment Installation

Ductwork

Ventilation

Refrigerant Lines

Thermostats & Controls

Frequently asked questions

Does a hvac project in Tyler County need a permit?

What codes apply to Tyler County hvac work?

How long does a hvac inspection take in Tyler County?

Can I use CodeCheckHQ for a Tyler County hvac self-inspection?

Don't guess. Check it now.

Tyler County, Texas
HVAC Code Checklist

Tyler County, Texas
HVAC Code Checklist