NCI-certified technicians. Fixed-fee proposals within 24 hours. Kentucky & the Midwest since 2009.
NCI Certified
Founded 2009
90+ Projects
Fully Insured
ASHRAE 111
IBHS FORTIFIED
Blower Door & Duct Leakage Testing in Knoxville, TN is delivered by HECS — an NCI-certified, Kentucky-based testing firm serving Tennessee and the broader Midwest since 2009. HECS serves the Knoxville metro from our Louisville KY headquarters; most projects are a 4-hour drive. Travel cost is quoted up front in the proposal and bundled with related projects when possible. We serve Knoxville Metro.
Local code officials, builders, developers, and program administrators across Tennessee trust HECS for third-party Blower Door Testing because we deliver:
HECS quotes Blower Door Testing projects on a fixed-fee basis after a free scoping call. Cost depends on building size, project complexity, and program requirements. Most Knoxville projects fall within our standard Midwest service rate. Call (859) 983-7382 or email [email protected] for a project-specific quote within 24 hours.
HECS serves the Knoxville metro from our Louisville KY headquarters; most projects are a 4-hour drive. Travel cost is quoted up front in the proposal and bundled with related projects when possible.
HECS field technicians hold RESNET Certified HERS Rater credentials (valid through December 2026). HECS is also an IBHS FORTIFIED Home Evaluator, RESNET Certified HERS Rater, ENERGY STAR Multifamily Reviewer, NGBS Green Certified Verifier, and EarthCraft Certified Verifier. Every HECS report is signed by a credentialed technician — never outsourced, never subcontracted for the signature.
Yes. HECS regularly coordinates Blower Door Testing with local code officials, commissioning authorities (CxA), and HERS raters across Tennessee. We deliver reports in the format your reviewer requires and attend coordination meetings when requested. References from Knoxville-area code officials and developers available on request.
HECS also delivers Blower Door Testing in:
Related HECS service: HERS Rater Kentucky — RESNET-certified HERS rating, energy modeling, IECC compliance, and ENERGY STAR v3 verification. See HERS Rater service hub →
Fixed-fee proposal within 24 hours — not an estimate.
Related HECS services: all HECS services · Contact HECS · 45L Tax Credit Certification · FORTIFIED Roof Evaluation
Most blower door tests in the Knoxville metro schedule within 1-2 weeks of contract signing. Single-fan residential tests can usually be booked within 3-5 business days.
Yes. HECS field technicians hold current RESNET HERS Rater credentials (valid through 2026) and submit ratings through the accredited provider's registry. HERS Index, ENERGY STAR v3.1, and code-required blower door tests all carry the same credential.
A blower door test measures total building envelope air leakage (ACH50 / CFM50). A duct leakage test measures leakage of the HVAC duct system only (CFM25 / CFM50 to outside). ENERGY STAR Multifamily, code-official review, and 45L credit all require separate envelope and duct tests.
HECS verifies the service against the applicable Tennessee state energy code, ASHRAE standards, and any program-specific certification path your project requires. We follow ASTM E779 for the test procedure and report in the format your code official or program reviewer requires.
HECS documents specific leak locations where visible (using a combination of smoke pencil and visual inspection). The certification report identifies the test result vs. the target, with recommendations for sealing. Re-test after sealing is quoted separately.
Yes. We coordinate test scheduling, result submission, and any clarifications with code officials, HERS raters, and program administrators as needed.
If you're searching for Blower Door Testing near me in Knoxville, Tennessee, HECS is the certified third-party verifier that serves your area. HECS covers Knoxville and surrounding communities within a 100 miles service radius, traveling from our Louisville, Kentucky headquarters to projects region-wide.
Areas HECS serves near Knoxville:
Same-week scheduling for projects in Knoxville and surrounding counties. Call (859) 983-7382 or email [email protected] to start a project in your area.
HECS is an NCI-certified blower door test company serving Knoxville, TN. We perform residential and commercial blower door tests to ASTM E779 standards and deliver certified air leakage reports.