Life Cycle For A Roof Top Unit

If a roof doesn t last the desired 20 years the owner is likely to incur higher than average maintenance costs and towards the end of the roof s life also major renovation costs. The expected life of a given roof in a given environment has the most impact on the roof s overall life cycle cost. The rooftop unit comparison calculator rtucc compares high efficiency rooftop air conditioners to standard equipment in terms of life cycle cost.

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This web application provides an alternative to complicated building simulation models while offering more detail than simplified estimating tools that are commonly available.

Life cycle for a roof top unit.

Commercial residential and rooftop hvac units all have an expected useful life. In the south uv rays are more intense and can break down roofing material quicker than in northern locations. As a building owner superintendent or property manager it s important to understand what kind of maintenance your unit needs on a regular basis and how manufacturers define proper maintenance in regards to their units expected operating lifespans. The caveat is that those lifespan numbers always include the phrase with proper maintenance.

At 15 years new equipment was added to continue the calculation to the 30 year mark. Maybe even a total roof replacement. Roof top air conditioners single zone 15 multi zone 15 boilers hot water steam steel water tube 24 30 steel fire tube 25 25 cast iron 35 30 electric 15 burners 21 furnaces gas or oil fired 18 unit heaters gas or electric 13 hot water or steam 20. Normal aging consists of.

The average premium black asphalt roof has an average life span of 14 years with the average life of a premium white roof is greater than 20 years. The moment the roof is installed it begins to age. Heat of the sun. The lifespan typically ranges from 5 to 20 years.

A roof system s actual life span can vary depending on the local environment. Physical damage walking on it hail tree limbs etc thermal shock. Our npv methodology assumes a 15 year life for the rooftop units as listed in 2015 ashrae applications table 4.

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