Heat abatement program at public schools

The Department's heat abatement effort prioritizes schools that require cooling strategies, which may include air conditioning. We work with the Legislature to fast-track the schools that need relief most.


The Department is working with the Legislature to fast-track air conditioning projects and other heat-relief initiatives via its Heat Abatement Program, which falls under the state's Capital Improvement Projects​ budget.

What is heat abatement? Heat abatement is working to reduce heat through passive and mechanical means. Air conditioning is a mechanical form of heat abatement. Passive means are techniques such as heat reflective paint and extending shading to remove direct sunlight from hitting a building.

Air conditioning isn't always the best option — many aging sc​hool facilities do not have the capacity to support it, nor can the state afford to install and run AC at all DOE schools statewide. The Department's facilities team analyzes each school and determines an approach that makes the most sense weighing all factors. Other cooling options include ceiling fans and building ventilation. 

HIDOE Thermal Comfort Website

The Department is taking another step to monitor and adjust classroom temperatures. The HIDOE Thermal Comfort website features data from 37 schools with weather stations and 62 schools with indoor sensors that monitor classroom temperatures on Oahu, Maui, Kauai and the Big Island. Click here for more information. 

Visit hidoe-thermal-comfort.com to access the HIDOE Thermal Comfort website.

Cool Classrooms Initiative

In the 2016 Legislative session, $100 million was appropriated to cool 1,000 classrooms, with instructions not to add to the net energy load. The approach included:

  • Air conditioning (this includes photovoltaic-powered AC to keep electrical costs and load down)
  • Passive cooling (using heat-reflective paint, night-time vents, insulation, ceiling fans)
  • Electrical efficiencies (reducing load further as AC came online)​

In August 2017, we reached the goal of cooling 1,000 classrooms. As of May 2018, there have been a total of 1,319 classroom AC units installed at our public schools. Additional units continue to be installed.

Asst. Supt. Dann Carlson explains how HIDOE is incorporating energy efficiency to minimize or negate net energy load of these systems in this interview with Howard Dicus of Hawaii News Now.

Cooling schools​

Following are lists of where AC has been identified as a priority (in order of priority) and the status of roll out at schools previously on the list. We encourage the public to add their feedback​ about heat abatement at their community schools: Please email doe_info@hawaiidoe.org.

AIR CONDITIONING COSTS: It is important to note the costs associated with air conditioning:

  1. Equipment and installation
  2. Electrical bill increase
  3. Maintenance
  4. Life cycle replacement (average of 7-10 years depending on type of AC system)


This is the list of schools that are being evaluated for the potential for the recently announced expansion to cool more classrooms. This does not mean all classrooms at these campuses would have air conditioning installed.

  1. Ewa Beach Elementary ​
  2. Ilima Intermediate
  3. Campbell High
  4. Kamaile Academy (Conversion Charter)
  5. Kaimiloa Elementary
  6. Nimitz Elementary
  7. Mokulele Elementary
  8. Pearl Harbor-Kai Elementary
  9. Lehua Elementary
  10. Waimalu Elementary
  11. Aliamanu Elementary
  12. Aliamanu Middle
  13. Waipahu High
  14. Ewa Elementary
  15. Barber's Point Elementary
  16. Waipahu Intermediate
  17. Pearl Harbor Elementary
  18. August Ahrens Elementary
  19. Waipahu Elementary
  20. Waialua High & Intermediate
  21. Leihoku Elementary
  22. Honowai Elementary
  23. Nanakuli Elementary
  24. Nanakuli High & Intermediate
  25. Kaunakakai Elementary
  26. Kilohana Elementary
  27. Manana Elementary
  28. Princess Nahienaena Elementary
  29. Lahaina Intermediate
  30. Lihikai Elementary
  31. Kekaha Elementary
  32. Kahakai Elementary
  33. Maui High

Schools previo​​usly on priority list (year removed)

  • Maili Elementary (2002)
  • Kihei Elementary (2007)
  • Kamehameha III Elementary (2010)
  • Lokelani Intermediate (2015)
  • Pohakea Elementary (2012)
  • Hickam El​​ementary (2014)
Schools outside priority list that received portable AC for supplemental cooling:
  • Hilo Union Elementary
  • Kahului Elementary


  • Ewa Makai Middle (incl. cafeteria)
  • Hickam Elementary​
  • Holomua Elementary
  • Hookele Elementary (incl. cafeteria)
  • Iroquois Point Elementary​​
  • Kamalii Elementary
  • Kamehameha III Elementary
  • Kapolei Elementary
  • Kapolei Middle​
  • Kapolei High
  • Keaau Elementary
  • Keoneula Elementary
  • Konawaena Elementary
  • Kihei Elementary
  • Lokelani Intermediate
  • Maili Elementary (incl. cafeteria)
  • Mililani Ike Elementary
  • Mililani Middle
  • Mililani Mauka Elementary
  • Pohakea Elementary
  • Pomakai Elementary
  • Pu'u Kukui Elementary



  • Aiea Elementary​ 
  • Aliamanu Middle
  • Anuenue School
  • Central Middle
  • Honowai Elementary 
  • Kaahumanu Elementary
  • Kahala Elementary
  • Kaimuki Middle
  • Kauluwela Elementary
  • Momilani Elementary 
  • Nanaikapono Elementary
  • Pearl City Elementary
  • Pearl City Highlands Elementary
  • Pearl Harbor Elementary
  • Pearl Ridge Elementary
  • Puuhale Elementary
  • Royal Elementary
  • Waianae Elementary
  • Wheeler Elementary 
  • Wilson Elementary​

Hawaii Island:

  • De Silva Elementary
  • Kalanianaole Elementary/Intermediate


  • Puunene Elementary


  • Hanalei Elementary

Heat abatement analysis

There isn't a one-size-fits-all approach to reducing heat in schools, but there is a process that's informed by data to reduce heat in schools in the most effective and systematic way. The goal is to reduce classroom temperature via accumulated improvements (options laid out below). For classrooms where these efforts don't bring down the temperature sufficiently, A/C and supplemental cooling is planned. Learn more in our 2015 Energy Systems Study​, and you can see school-by-school evaluations and projects, along with weather station data, on MK Think's HIDOE Classroom Heat Abatement site.

Heat abatement options

These are vents that enable hot air to be vented out of classrooms allowing cooler air to come in. Since hot air rises, most of these are installed either on roofs or high up on walls or windows. Additional benefits is that these are powered by the sun and do not need electricity.

  • Hokulani Elementary
  • Jarrett Middle
  • Kailua Intermediate (kitchen)
  • Kaiulani Elementary​
  • Kamiloiki (solar wall vents)​
  • Lunalilo (solar wall vents)
  • Molokai High
  • Noelani
  • Niu Valley (shop building)
  • Washington Middle​

The Department piloted an air conditioning project to cool a portable at Waianae High School. The unit is powered by photovoltaics like that on many homes. This allows for the unit to be capable of generating its own electricity. Two more will be installed on portables at Campbell High School through a crowd-funded program led by high school students.

These are essentially high efficiency skylights that allow light into the classrooms without the heat generated by electric lights. In many cases, on sunny days, you don't need to turn on any lights.

  • Kaimuki High (including portables)
  • Ewa Makai
  • Hookele Elementary​

Since 2005, the Facilities team has increased the insulation in roofs and walls to reduce the amount of heat gain in DOE buildings, helping to reduce the temperature inside our classrooms. These improvements were done in conjunction with needed repairs such as reroofing an existing building.

As part of a Race to the Top-funded facilities effort in the Zones of School Innovation​, ceiling fan installation was targeted for classrooms that (1) were not already air conditioned, (2) did not already have ceiling fans and (3) are used for student instruction.

Leeward District

  • Nanakuli Elementary: 8 classrooms
  • Nanakuli High & Inter: 41 classrooms
  • Waianae Elementary: 2 classrooms
  • Waianae Intermediate: 42 classrooms
  • Waianae High: 57 classrooms
  • Makaha Elementary: 43 classrooms
  • Leihoku Elementary: 5 classrooms
  • Kamaile Charter School: 29 classrooms

Hawaii Island

  • Kau High & Elementary: 7 classrooms
  • Keonepoko Elementary: 20 classrooms
  • Pahoa Elementary: 37 classrooms
  • Keaau Middle: 16 classrooms
  • Pahoa High & Intermediate: 59 classrooms
  • Mountain View Elementary: 14 classrooms
  • Naalehu Elementary: 21 classrooms

By painting roofs with heat reflective fluid roof coating system instead of the basic black or gray materials, a temperature reduction of up to 5 degrees is possible. This system includes solar reflective properties and sometimes additional layers of insulation material to help reduce heat transferring into the classroom. This is more than a change in coloring for the roof. It has specific properties to minimize the impact of direct sunlight.​

Another option is to start the school year later. The school year typically starts at the beginning of August. By law (Act 167), the school year must include 180 student instructional days. ​We will continue to work with unions, the Board of Education and the Legislature on this pressing issue.​

​​Cost factors​

  • ​​Estimated cost of installing AC at all DOE schools: $1.7 billion. This figure was a snapshot of how much it would cost to install full-school AC systems like that at Pohakea Elementary, completed in 2010. This number will fall as a survey of HIDOE schools is completed to grasp how many classrooms/offices have AC now, and how many are still waiting for cooling retrofits (either heat abatement measures (listed above) or installed AC if needed).

  • Current annual electricity bill for HIDOE schools and facilities: $48 million. This amount would increase as high-energy AC systems are installed.

New schools will incorporate smart, efficient and modern design principles that take into account the natural environment and exploit ways to cool facilities using less energy. Ho'okele Elementary, which opened in School Year 2015-16, is an example.​​

​Key Questions​​

Preventing heat-related illness

During the hottest months of the school year, it's important that all parents and guardians heed these recommendations to help prepare children for warm temperatures.​

Contact Information

Office of School Facilities and Support Services

Phone: 808-586-3444


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