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Reduce Office Energy Costs by Improving Energy Efficiency

January 05, 2018

In any office, large or small, there should always be a focus on reducing overhead costs. And one of the biggest costs for any business is energy – mostly winter heating and summer cooling. Any effort to reduce office energy costs will be related to improving some aspect of energy efficiency.

On a small scale, there are numerous improvements that can be made - LED lights and fixtures; motion sensors and dimmer switches; even programmable thermostats. But for dramatic change, energy efficiency will most likely involve comprehensive upgrades to air sealing and insulation.

Energy efficiency upgrades will reduce office energy costs

In an effort to reduce office energy costs, business owners need to make the type of upgrades and retrofits that will deliver a meaningful return-on-investment. Turning up the heat in winter or turning down the thermostat in summer are both money wasters. And an HVAC system that’s working “overtime” is simply contributing to waste and doing little to reduce office energy costs.

Upgrades that will measurably reduce office energy costs will usually focus on three elements – air sealing, thermal insulation, and mechanical ventilation. Working together as a system, the three elements contribute to optimum energy efficiency while reducing energy consumption. The results are evident – indoor comfort from season to season and energy savings for the long term.

Insulation Upgrading

In many commercial applications, contractors are recommending spray foam insulation as the ideal retrofit. It’s an application that seals and insulates at one time, enveloping every opening, crack, and crevice for an airtight space. The finished installation is far superior to any insulation product on the market. A spray foam retrofit does it all - sealing the space; providing very high R-Values; even adding structural strength to the installation space.

Window Film Application

Window films save on energy can reduce energy costs by retaining indoor heat in the winter and preventing outdoor heat from penetrating in the summer. Temperature fluctuations from office to office are diminished, and occupant comfort is improved as a result. In terms of investment, window film applications will “pay off” quickly, simply from the energy savings during winter and summer. As well, the HVAC system will be better balanced.

Air Sealing Retrofits

Even with quality insulation, the job isn’t complete without addressing air leakage in the building envelope. In short, air sealing is key to ensuring energy efficiency. Air movement is controlled, and with proper ventilation, the heating and air conditioning system operates more efficiently. Air sealing and ventilation work together to improve energy efficiency, while reducing energy consumption season to season. The result: significant savings.

Improving energy efficiency with Great Northern Insulation

With Great Northern Insulation, a combination of air sealing, insulation, and ventilation ensures optimized energy efficiency. With a highly skilled team of installers, GNI will recommend the best product and installation for the job. It’s all done according to the building code, and every install is based on manufacturer specifications. To find out more, visit the GNI website at www.gni.ca .

Western Ontario

935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

TOLL FREE: 1-800-265-1914

Muskoka, Haliburton, Northern Ontario

1027 Elwell Park Road
Gravenhurst, Ontario
Canada P1P 1R1

TOLL FREE: 1-800-265-1914

Central Ontario

29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5

TOLL FREE: 1-800-265-1914

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

GTA & South Central Ontario

450 Industrial Dr,
Toronto (Milton), Ontario
Canada L9T 5A6

TOLL FREE: 1-800-265-1914

Eastern Ontario

1035 Moodie Dr #1,
Nepean, ON
K2R 1H4

TOLL FREE: 1-800-265-1914


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.


Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

Best of 2020

For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2021 Award

Best of 2021

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2021.

Homestars Best of 2022 Award

Best of 2022

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2022.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

Enenrgy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

100% Canadian

100% Canadian

Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.

Foam Masters

Do it right the first time
- with foam mastersTM

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


3MTM products.
Quality + Performance = Savings

3MTM energy-saving products are designed to keep warm air in, and cold air out, while keeping energy bills down. Products optimize energy efficiency in buildings and homes; improve indoor environment for occupants; and effect the reduction of seasonal energy costs. 3M products are authorized for LEED credits (Leadership in Energy/Environmental Design).


Baeumler ApprovedTM
Professional, Certified and Insured

Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

Holmes and Holmes

Holmes and Holmes


Mike Holmes and his son Mike Jr. (MJ) convert MJ’s bachelor bungalow into a two-storey home for MJ and his girlfriend Lisa. Choosing the newest materials and build techniques, the father and son team follow Mike’s famous motto – “Make it right.” The show can be watched on HGTV and DIY Network.


Enbridge Incentives

The Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – and Great Northern Insulation can pave the way.


Great Northern Insulation proudly abides by a renovation-specific Code of Conduct set by RenoMark™.


We are Verified & Bonded by eRenovate. When you choose to proceed with our services through their platform, you receive the gaurantees set forth through their program.

As Seen on Love It or List It

The GNI crew have been featured installing insulation on Love It or List It - have you seen our logo in an episode?

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