Differences Between ERV And HRV Systems

ERV Vs. HRV Systems

The importance of ventilation for homes in Canadian homes is widely known. Learning more about HRV and ERV systems is the next step. It is important to note that they are not the same, but the quality of your indoor air can be improved substantially by both systems. Each system comes with its own unique advantages and disadvantages. It’s impossible to find a system that matches the requirements of all applications perfectly. To find out more about each system before making your final decision, read on below.


What Does HRV Mean?

HRV stands for Heat Recovery Ventilation in full.

HRV Systems: How Do They Work?

HRV systems remove stale air in order to bring in fresh air. Some of the heat in the air that is being vented out is recovered by the system during wintertime. This heat is then used to warm up the fresh air from outside.

The same principle applies during summer. With the only change being that now the reverse is applied. Simply put, the air coming from outside is partially cooled using the air being removed from the inside of the house or building.

Therefore, your home’s AC will not be forced to work harder than normal. On top of this, your energy consumption will be lower. As such, you can end up making substantial savings on your utility costs.

What Does ERV Mean?

ERV stands for Energy Recovery Ventilation in full.

Working Principle of ERV Systems

These systems work by drawing outside air. Fresh air from the outside replaces stale indoor air. A heating or cooling effect will be transferred to the new supply of air during the process.

How Do the Systems Differ?

The system you end up choosing will be determined by one important difference between the two options. Only heat or cold is recovered by HRV systems. However, heat and relative humidity are recovered by ERV systems.

Indoor air will be relatively humid during winter. And, you won’t have to fret about excess humidity during summer. You get the best of both worlds.

Dry skin and sore throats will be a common issue among those living in your house if the air is too dry. On the flip side, you might have a mold problem if the air is too humid. This can lead to allergies and respiratory problems.


Which is The Best Choice for You?

Before making a final decision, you will need to consider a few factors, including:

Local Climate: If you live in an area that experiences cold winters and hot summers, you are better suited by an ERV system. Go with an ERV system if your local climate matches that description.

The Heating System in Your Home: Go with an HRV system, if you use a non-drying heating system, like a boiler, to heat your home. However, if the existing heating system always leaves the air in your home dry, you are better off with an ERV system.

The Period Your Home Was Constructed: You should consider installing an ERV system if your home was built before the seventies – translating into drier indoor air. However, an HRV is a better fit if you live in a newer home.

The Size of Your Household: Simply put, your home is bound to be more humid, as the number of occupants grows. More cooking, showering and increased breathing can be the reason for this. An HRV is a great option if you have a large household.

We Can Assist

As seasoned experts, JD Swallow Heating and Cooling can assist you with choosing a suitable system. In addition to laying out your options, we will also conduct the installation work. To get a free quote, contact us today.

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