State Of Florida Attic Duct Work

The florida building code energy conservation for duct insulation r value requirements.

State of florida attic duct work.

Here s a typical scenario for a 2 000 2 500 square foot two story. It was new when the ac was put in 7 years ago. Installing ducts in a multistory home goes more slowly since wall stacks are included. Colder parts of the state also experience winter peaks during times of high heating demand.

Installing ductwork is a 1 4 day job because of the wide range of scenarios. With hundreds of square feet of ductwork surface area in the attic and a δt of 75 f the air coming out of the vents in your home will be significantly higher than 55 f. An attic without insulation will allow hot air to enter your home. R 6 if in the attic.

The attic ductwork is flex duct work. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. A last step to ensure the air around your ductwork stays at low humidity levels is to install a dehumidifier which is particularly helpful if your ductwork is in your attic or crawl space. A dehumidifier keeps the moisture in your home at healthy levels year round eliminating condensation on plumbing and ductwork and improving indoor air.

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. Your air conditioning system will be forced to work harder to keep your home cool. Credit provided if testing shows less leakage hvac controls. I called out the original hvac company and they took a look and said they saw no water.

Maximum weighted average shgc 0 50 except if 4 overhang ducts. In a vented attic this can happen when the duct is in close proximity to conditioned space i e the ceiling and also thermally isolated from the hot attic beneath the ceiling insulation. Duct coverings and linings including adhesives where used shall have a flame spread index not higher than 25 and asmoke developed index notover 50 when testedin. Thermostat required for each system.

Space permitting state law windows. In florida periods of peak residential electric demand typically occur during summer months and the warmest hours of the day late afternoon early evening when people are home and running their air conditioners and fans to staycool. Connecting an attic air handler to ceiling ducts in a single story home is a quick project. In this case the temperature gradient between supply air and the ceiling can be such that the duct surface could be cooler than the local dew point.

Duct insulation materials shall conform to the following requirements. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. Throw duct leakage into the mix and the problems are even worse.