Isle of Wight County, Virginia
HVAC Code Checklist

Make sure your hvac work meets local building codes before the inspector comes out. Covers Isle of Wight County requirements based on Local building code.

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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 Local building code. 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 Isle of Wight County need a permit?

Most hvac work in Isle of Wight County, Virginia requires a building permit before construction. CodeCheckHQ helps you verify your work meets Local building code requirements before the inspector arrives.

What codes apply to Isle of Wight County hvac work?

Isle of Wight County follows Local building code with local amendments. CodeCheckHQ checklists are derived from these codes and reflect state-level modifications.

How long does a hvac inspection take in Isle of Wight County?

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

Can I use CodeCheckHQ for a Isle of Wight 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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Isle of Wight County building code requirements in plain English. Mark each item Pass, Fail, or N/A. Get a PDF report.

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Isle of Wight County, VirginiaHVAC Code Checklist

What's in the checklist

Equipment Installation

Ductwork

Ventilation

Refrigerant Lines

Thermostats & Controls

Frequently asked questions

Does a hvac project in Isle of Wight County need a permit?

What codes apply to Isle of Wight County hvac work?

How long does a hvac inspection take in Isle of Wight County?

Can I use CodeCheckHQ for a Isle of Wight County hvac self-inspection?

Don't guess. Check it now.

Isle of Wight County, VirginiaHVAC Code Checklist

What's in the checklist

Equipment Installation

Ductwork

Ventilation

Refrigerant Lines

Thermostats & Controls

Frequently asked questions

Does a hvac project in Isle of Wight County need a permit?

What codes apply to Isle of Wight County hvac work?

How long does a hvac inspection take in Isle of Wight County?

Can I use CodeCheckHQ for a Isle of Wight County hvac self-inspection?

Don't guess. Check it now.

Isle of Wight County, Virginia
HVAC Code Checklist

Isle of Wight County, Virginia
HVAC Code Checklist