Simple from start to finish
No phone tag, no paperwork headaches. Submit your job online and we handle the rest.
Submit your job request online
Fill out the job form in minutes — address, system type, scope of work, and preferred scheduling window. No account required.
We confirm and schedule
We'll follow up within one business day to confirm details and lock in an inspection or testing appointment that works for your timeline.
We perform the inspection or test
Blower door, duct leakage, HVAC verification, or Title 24 inspection — we show up, perform the work, and document everything.
You get your compliance certificate
We issue the compliance documentation and handle any permit coordination needed with the local building department.
What's typically required for HVAC replacement
Requirements vary by project type, climate zone, and permit jurisdiction. When in doubt, call us — we'll confirm what applies to your job.
Requirements vary by project type, climate zone, and permit jurisdiction. When in doubt, call us — we'll confirm what applies to your job.
Current California leakage limits
These are the Title 24 thresholds your duct system must meet to pass. We test and document the result.
| Condition | Test Type | Pass Threshold |
|---|---|---|
| New duct system (≥75% new duct material) | Total leakage | ≤ 5% of system airflow |
| Altered duct system (<75% new material, >40 linear ft replaced) | Leakage to outside | ≤ 7% of system airflow |
| Altered duct system (<75% new material, >40 linear ft replaced) | Total leakage | ≤ 10% of air handler airflow |
| Altered duct system (<40 linear ft replaced) | Visual inspection for leaks | No leakage test required |
| Any altered system | Title 24 inspection | Required per Title 24 code |
| New construction | Blower door (ACH50) | Varies by climate zone |
Table 150.2-A — Duct insulation R-value
New duct systems must meet minimum insulation requirements based on climate zone. For new installations, use the R-value specified for your climate zone — going higher is always acceptable.
| Climate Zone | Minimum Duct R-Value |
|---|---|
| Zones 3, 5 through 7 | R-6 |
| Zones 1, 2, 4, 8 through 16 | R-8 |
Most of Southern California falls within Climate Zones 6, 7, 8, 9, 10, and 16. Zones 8 through 16 require R-8 duct insulation. When in doubt, confirm your climate zone before ordering materials.
Zones we commonly serve
California is divided into 16 climate zones. Title 24 requirements vary by zone. Here are the zones most common in our service area.
(Torrance, Long Beach)
(Riverside, San Bernardino)
(San Diego, Chula Vista)
(El Cajon, Hemet)
(Palm Springs, Victorville)
(Big Bear, Idyllwild)
When duct testing is not required
There are three specific exemptions to duct leakage testing under California Title 24. If none of these apply, testing is required.
- Previously tested and sealed systems — Duct systems that have been previously documented as ECC/HERS-tested and sealed are exempt from repeat testing.
- Duct systems under 40 linear feet — Systems with less than 40 linear feet of duct do not require a leakage test but must be visually inspected for leaks.
- Asbestos-containing ducts — Duct systems containing asbestos are exempt from leakage testing requirements.
Not sure if your job qualifies for an exemption? Call us and we'll help you confirm before scheduling.