Hollis Primary School

When you set the units to a certain temperature, the room just stays at that temperature. The learning environment has improved dramatically because it is so much more comfortable.

Hollis Primary School (HPS) has served its Hollis, New Hampshire community for generations. Housed within a brick masonry building constructed in 1952, HPS needed to be retrofitted to improve thermal comfort and the educational environment in a sustainable, energy-efficient way aligned with its community’s values. A new spray foam envelope for insulation, solar panels and Zoned Comfort Solutions™ with Hyper-Heating INVERTER® technology proved essential to delivering energy-efficient comfort and transforming how happy students and staff experience their school. You’ll hear from the school principal and the energy-efficiency expert who worked with HPS and the school board through every stage of the retrofit. You’ll also see photos of the site and the equipment. Download the PDF below to read more.

Hollis Primary School

Project Location: Hollis, New Hampshire
Completion Date: August 2018

Project Team

  • Architect: Windy Hill Associates, New Boston, New Hampshire
  • Mechanical Engineer: John F. Penney Consulting Services, P.C., Chester, Vermont
  • Energy Consultant: DDH Energy Consulting, LLC, Concord, New Hampshire

Mitsubishi Electric Equipment Installed

  • (4) MXZ-4C36NAHZ-U1 M-Series Hyper-Heating INVERTER® H2i® Multi-Zone Outdoor Heat Pumps
  • (9) MXZ-8C48NAHZ M-Series Hyper-Heating INVERTER® H2i® Multi-Zone Outdoor Heat Pumps
  • (6) MSZ-GL06NA-U1 Wall-Mounted Indoor Units
  • (7) MSZ-GL09NA-U1 Wall-Mounted Indoor Unit
  • (1) MSZ-GL12NA-U1 Wall-Mounted Indoor Unit
  • (3) MSZ-GL18NA-U1 Wall-Mounted Indoor Units
  • (16) MSZ-GL24NA-U1 Wall-Mounted Indoor Units
Product Category
Ductless Systems
Educational Facility
Completion Date
August, 2018
New Hampshire
Case Study Type
For Professionals
Text Box Type
energy savings/rebates/efficiency
retrofit/historic restoration

Chosen Just For You

Give Your Family Personalized Comfort Year Round with Heat Pump Technology

Give Your Family Personalized Comfort Year Round with Heat Pump Technology

An image of a family smiling and hanging upside down on a sofa.

9 Simple Ways to Keep Cool During Hot Weather

An image of a living room partially submerged by flood water.

Repairing and Preventing Flooded Cooling and Heating Systems

An image of a smartphone with colorful bokeh in the background.

You Don't Need a Computer Science Degree to Understand Home Automation Systems

Smartphone technology allows homeowners to control their cooling and heating remotely.

High Tech Comfort Control Solutions Can Improve Your Home's Resale Value

An image of a modern, livable attic space.

Upstairs, Downstairs: Conditioning Multiple Rooms With Home Zoning

Couple smiling about energy bill savings

Big Home, Small Bills. Here's How

Modern living room with wall-mounted ductless unit

5 Advantages of Ductless Heating and Cooling Systems

Live chat is not available