HVAC Replacement permits across Tennessee
Where each city draws the line on hvac replacement work. Sort any column — useful if you build across several towns and need to know where the rules change.
The statewide starting point is International Residential Code, принятый Теннесси, 2018. Cities that changed the rule are the interesting rows below.
| Where the line falls | Fee | |||
|---|---|---|---|---|
| Nashville | 704,963 | Yes | Replacing an air conditioner, furnace, or heat pump needs… | Fees depend on how the appliance is classified in the gas/m… |
| Memphis | 610,919 | Unconfirmed | — | — |
| Knoxville | 198,722 | Yes | Replacing an air conditioner, furnace, or heat pump needs… | Mechanical permit fees are set in the city Fee Schedule ado… |
| Chattanooga | 191,496 | Yes | Replacing an air conditioner, furnace, or heat pump needs… | — |
| Clarksville | 185,690 | Yes | No size threshold in the code | Electrical HVAC inspection: $32.00 per unit. |
| Murfreesboro | 168,387 | No | Replacing like package or split HVAC equipment that is pe… | Not applicable; like-for-like replacement is exempt. |
| Franklin | 89,142 | Yes | No size threshold in the code | Mechanical inspection fee in the Appendix A fee schedule. |
| Johnson City | 73,635 | Yes | Replacing an air conditioner, furnace, or heat pump needs… | The Board of Commissioners may set a permit fee schedule (S… |
| Jackson | 69,303 | Unconfirmed | — | — |
| Hendersonville | 63,947 | Yes | No size threshold in the code | — |
| Smyrna | 60,302 | Yes | Replacing a full air conditioner, furnace, or heat pump n… | — |
| Kingsport | 57,109 | Unconfirmed | — | — |
| Gallatin | 52,489 | Yes | No size threshold in the code | Current permit fee schedules are available in the Building … |
| Brentwood | 45,525 | Yes | No size threshold in the code | — |
| Mount Juliet | 44,066 | Unconfirmed | — | — |
| La Vergne | 41,430 | Depends | exempt if heating and cooling capacity and fuel source st… | Set by the fee schedule adopted with the annual budget. |
| Germantown | 40,128 | Unconfirmed | — | — |
| Morristown | 32,994 | Unconfirmed | — | — |
| Bristol | 27,867 | Unconfirmed | — | Permit fees set by resolution of city council (§ 14-33(b));… |
| Farragut | 25,242 | Yes | No size threshold in the code | — |
| Springfield | 19,842 | Unconfirmed | — | — |
| Goodlettsville | 17,433 | Unconfirmed | — | — |
| Nolensville | 15,809 | Unconfirmed | — | — |
“Unconfirmed” means the city's code doesn't state the rule plainly enough to publish. Those city pages link straight to the ordinance section instead.
Why neighboring cities disagree
Every city starts from a model code and then edits it. One town raises the shed cutoff, the next lowers the fence height, a third exempts the structure where its neighbor only exempts repairs to it. None of that is visible from a national article — you have to read each ordinance, which is what these pages do.