Uniformat D3050 · OmniClass 23-33 25 00

Rooftop unit, gas heat / DX cooling

Also called RTU, packaged rooftop unit

Confidence D
Version 0.1.0
Reviewed 2026-10-20

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 [email protected].

Cite this

Citation

unfinished.one (2026). Rooftop unit, gas heat / DX cooling, v0.1.0. https://unfinished.one/c/rtu-gas-electric/v/0.1.0

BibTeX

@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