Uniformat D3050 · OmniClass 23-33 25 00
Rooftop unit, gas heat / DX cooling
Also called RTU, packaged rooftop unit
Service life
15 yearsmedian · 12–20 years p10–p90
Years in service. The band holds 80% of units (p10 to p90); the line is the median.
| Modifier | Effect |
|---|---|
| coastal salt exposure | -3 years |
| PM completion above 90% | +2 years |
Preventive maintenance
| Task | Every | Trade | Hours | Criticality |
|---|---|---|---|---|
| Replace filters | 3 months | HVAC tech | 0.5 | high |
| Inspect heat exchanger, test combustion | year | Gas fitter | 1.5 | high |
| Verify economizer operation | 6 months | Controls tech | 0.5 | medium |
Frequencies are ISO 8601 durations in the data (P3M = every 3 months).
Basis
- expert estimate — unfinished.one editors
How sources are chosen and recorded: sourcing policy.
Open questions
- PLACEHOLDER ENTRY: values are illustrative and not yet sourced.
- Does life differ for units under 10 tons vs over 25 tons?
Know the answer? Send it with a source to hello@unfinished.one.
Cite this
Citation
unfinished.one (2026). Rooftop unit, gas heat / DX cooling, v0.1.0. https://unfinished.one/c/rtu-gas-electric/v/0.1.0BibTeX
@misc{unfinished_rtu_gas_electric_0_1_0,
title = {Rooftop unit, gas heat / DX cooling},
author = {{unfinished.one}},
year = {2026},
version = {0.1.0},
url = {https://unfinished.one/c/rtu-gas-electric/v/0.1.0},
note = {CC BY 4.0}
}Licence CC BY 4.0 · How to cite · JSON · Versions: 0.1.0