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Energy Efficient Homes - It's the Key to Energy Savings

February 20, 2015

We hear the buzzwords all the time - the energy efficient home. But what does it really mean? Energy efficiency (in a residential home or a building structure) is about the effective control of airflow, heated air, cooled air and moisture. Industry professionals refer to the indoor environment as a "system", where various components work together and contribute to the indoor "climate". Energy efficiency is optimized when the "system" is working well - when the interchange of indoor air and outdoor air is managed effectively. The whole idea behind managing airflow from season to season is to achieve positive results. One positive result is to reduce energy consumption and therefore save money. Another is to create a balanced indoor environment that provides maximum comfort for occupants and/or residents. Indeed, as our lifestyle needs and demands have changed over the years, so has our desire to enhance our indoor environment. The bigger question, of course, is how to go about improving the "system" and the components that are involved. For the professional, indoor environments are wholly dependent on the various components that make up the "system": the exterior weather barrier; the indoor air and moisture barrier; the thermal barrier (existing insulation); the heating, ventilation and cooling system (HVAC); the thermal windows; and even the hot water tank. The thing is, not every home or building incorporates components that are working efficiently on their own, let alone in tandem with the others. Needless to say, the objective is to optimize the "system". Whether it's for new construction, a renovation, or a retrofit, energy efficiency is very reliant on proper ventilation. Proper ventilation will allow stale indoor air to be removed, and allow fresh outdoor air to fill the indoors. Today's modern, high efficiency HVAC systems (heating, ventilation, and air conditioning) are designed to deliver proper ventilation, and provide a well-balanced and comfortable indoor environment from one season to the next. But still, the HVAC system is only one component - everything else must also be in sync. For older homes that aren't energy efficient (and want to be), an energy audit is an ideal place to start. A professional audit will highlight the home's weaknesses and evaluate the areas that require improvement. A good audit will also illustrate the difference between current levels of performance and potential levels of performance (after upgrades have been made). Every upgrade will contribute in some way to energy efficiency, and will result in cost savings. The trick is to do it right the first time - it makes for better outcomes. When it comes to upgrading, making the home airtight is a top priority. This can be followed up with enhanced insulation, which in itself boosts R-Value wherever installed. Upgrading an older HVAC system to high efficiency (sometimes rated as Energy Star) makes a big difference in terms of efficient energy usage as well as improved ventilation. Even upgrading a hot water tank (or system) can save energy - a high efficiency unit translates into obvious cost savings around the year. Again, it's all about individual components working together.

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

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

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Greater Toronto Area

2 Guided Court
Etobicoke, ON
M9V 4K6

TOLL FREE: 1-800-265-1914

GTA East

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

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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

Niagara Region

25 Lincoln Ave
St. Catharines, ON
L2P 2C7

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.

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

Trusted for Over 40 Years

Over 40 Years in Business

At GNI, we service your project with the most experienced staff in the industry. Ongoing professional development is an obsession at GNI and we will not compromise at any level to bring to our customers the very best Installers, Sales Representatives, Customer Care Personnel, Field Superintendents, Estimating and Technical Support to your project.

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

January, 2021 regulatory phaseout of hydrofluorocarbons (HFCs) with the introduction of WALLTITE CM01. Using hydrofluorolefins (HFOs) with lower global warming potential (GWP) compared to HFCs, WALLTITE CM01 is the next generation of spray foam insulation.



Heatlok® Soya HFOTM leverages Honeywell’s latest Solstice® Liquid Blowing Agent technology. This new hydrofluoroolefin (HFO) blowing agent is the most environmentally conscious blowing agent produced to date, with a zero ozone depletion potential (ODP) and a global warming potential (GWP) of 1, which is more than two orders of magnitude (99.9%) lower than HFCs used in this industry.


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).

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 Home Efficiency Rebate Plus program offers up to $10,000 in home reno rebates – 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?

Climatizer Cellulose


CLIMATIZER PLUS cellulose insulation is manufactured from a minimum of 85% locally-sourced post-consumer recycled newsprint. Non-toxic additives are applied to the uniquely fiberized paper generating a building material with superior thermal and acoustic properties, as well as exceptional resistance to fire, moisture, mould and pests.

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