Frequently Asked Questions

We get it.

Big decisions are tough.

We’re here to help you. 

We are changing communities by helping our clients transition away from high greenhouse gas emitting fuels to green alternatives. These projects will often reduce our client’s total greenhouse gas (GHG) emission by 80% or 90%. We accomplish this by reusing heat inside your building or surrounding community, instead of ejecting it outside. 

For example, the average ice arena can be used to provide enough heat for an entire pool complex, or to heat over 30 houses in the winter. We pride ourselves on building systems which reduce our clients fossil fuel emissions, while also saving them a lot of money.

The employees at Polar love engineering industrial refrigeration and energy recovery projects. Therefore, you should expect to work with a passionate engineer, who’s highest priority is making sure that the right refrigeration system or energy recovery system is engineered and constructed for you. 

We pride ourselves on not only offering our clients the latest technology, but also working very closely with our clients to ensure that this is balanced with first cost, system payback period, and other client-specific concerns. We accomplish this through a detailed client survey, and use this document at several internal design checkpoints to make sure you are happy with our final solution.

Finally, we believe in continuous improvement and therefore send out an anonymous survey at the end of our job to allow us to serve you better in the future.

At Polar, we understand that for our larger clients working in the food processing, cold storage, and petroleum extraction industries, down time costs a lot of money and therefore and is unacceptable. Furthermore, these projects require quick payback periods and low first costs. For this reason, we use our detailed client survey form to determine the largest driving factor for each project and then work very closely with our clients to ensure that our engineering solutions meet these goals.

Using this information we optimize the design of our refrigeration systems to either reduce first costs, or to maximize energy efficiency all while ensuring a highly reliable system is engineered. To do this effectively we use our engineering experience and work closely with supplier representatives, to ensure that all our engineering solutions integrate well and operate efficiently for years to come.

Did you know that 15% of global warming is caused by high global warming refrigerants (such as R507) being released into the atmosphere every year?  In other words, this means that every pound of R507 which is released into the atmosphere is equivalent to releasing 3985 pounds of CO2 into the atmosphere. 

For this reason, Canada, the USA, and over 190 other countries around the globe have created laws which restrict the use of high global warming potential (GWP) refrigerants. 

Although the restrictions around the globe vary by country, the important thing to consider as a refrigeration system owner is how this will affect you. Future proofing your refrigeration system means choosing a refrigerant which you will be able to continue to purchase in 5 or 10 years from now. 

Ask us about how your arena is going to be affected by these regulations. 

CO2 is a great refrigerant, and Polar Engineering has designed many large CO2 systems, but like every refrigerant CO2 comes with its own set of pros and cons. Please see the list below which details these pros and cons. Please feel free to contact us to learn more about CO2 and determine if it is right for you.


  • Very low global warming potential (future proof)
  • High temperature heat recovery above 100°C 
  • Smaller piping


  • Higher first costs
  • Higher pressures
  • Two stage energy recovery recommended

Energy recovery systems can be optimized on two different metrics, these being heat recovery and reductions of electrical consumption. Please see the energy recovery section of our services for more information on these two options. For simplicity the pros and cons of these two system types are outlined below. Please give us a call to determine if your refrigeration system could benefit from either of these options.  

Heat Recovery


  • Greenhouse gas emissions reductions of over 150 tons of CO2 per year of the average arena 
  • Natural gas savings of over $30,000 per year for the average arena
  • Many government grants available 
  • Payback periods of less than 5 years with government grants 


  • Higher capital cost
  • Larger footprint required inside the facility

Refrigeration System Electrical Consumption Reductions 


  • Payback period of 2 to 3 years
  • Electrical consumption reductions of more than $7,000 for the average area
  • Lower capital investment
  • Smaller mechanical room footprint 


  • No greenhouse gas reductions
  • Only small government grants available 

Polar Engineering is constantly working with government bodies to be aware of the best and largest government grants available. We use this information and relationship to ensure our clients are maximizing energy recovery and greenhouse gas grants. These grants often cover up to 50% of the project cost, and ensure a quick payback period for our clients. 

We would be happy to help you with any phase of your grant process. Therefore we would enjoy the opportunity to complete the engineering analysis required by these grants, or to complete the entire grant application process for you. 

If this interests you, please give us a call to discuss what grants are currently available.

Depending on the type of energy recovery system you install, your community could save between $5,000 and $50,000 a year in either electricity or natural gas reductions. On average this could reduce your community’s yearly operating costs by $20,000 to $30,000. This is dependent on the type of system installed and its geographic location.

It is definitely an investment to construct an energy recovery system, but with payback periods as short at 2 years, our systems are a great investment. The general rule of thumb: the larger the energy recovery system, the longer the payback period, but the higher the greenhouse gas reductions. 

This said, Polar’s new heat pump technology allows our clients to take heat from the refrigeration system and inject it directly into their existing boiler piping network. This technology can reduce the amount of money required to build a heat recovery system by 40%. This is because a conventional heat recovery system requires the existing boiler piping network to be paralleled. Our heat recovery systems do not require this extra piping network and therefore are much more affordable. 

At Polar, we want to invest in the communities and the world which supports us. Therefore, we use our own profits to help build a better future for everyone around the globe. This year, Polar has given money to help train farmers in the Amazon about sustainable coffee farming which does not cause massive deforestation.