Can anyone please clarify which, if any, minimum efficiency requirements are set for heat-pump dehumidifiers (indoor swimming pool dehumidifiers) under ASHRAE 90.1 (2007)?

Greetings, The standard states that the pump power must be 22 W/gpm. If the project has two chillers and primary secondary circuits, whereby there is on pump per chiller in the primary circuits and

Sorry for a couple of elementary questions, but my searches haven't been successful. 1. Is 90.1 compliance required, or only the mandatory provisions? 2.

Hallo, I have read the insulation requirements in Section 7.4.3 but it seems to focus on circulating and non-circulating systems with a storage tank.

If a project retains existing mechanical systems, but the overall scope of the renovations meets the new construction threshold, are the baseline calcs based on code-minimum or should the project a

We would like to apply the exceptional calculation method for guest room lighting in a 165-unit hotel.

LEED Reviewers are implementing new requirements for the baseline building (LEED NC v2.2 EAp2 VAV System) through the comment process.

Hi All, I am modelling a VRF system using ApacheHVAC in IES. But have no idea which prototype to choose.

We registered a block project; the Campus boundary includes land scape, existing non-LEED buildings and two LEED certification candidate buildings.

I am not too sure how to interpret this situation: This project is an addition (Phase II) to an existing 5 year old building (Phase I). Phase I is LEED certified.