Hello everyone, I am working on a residential project. The proposed case HVAC system is Water loop heat pump with cooling tower and natural gas based condensing boilers.

It's clear from the credit language and LEED Online form that California Title 24-2005 Part 6 can be used in place of ASHRAE 90.1-2007 as a baseline when creating an energy model.

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.