heat-recovery-ventilator / Green Building & Sustainable Home Renovation Information & Advice

How to Choose between an HRV and ERV system
HRV and ERV

Choosing between an HRV and an ERV

All homes need ventilation, whether natural or mechanical with an ERV or HRV system. Buildings and houses are no longer constructed leaking heat and moist air the way they used to be; we now build them as airtight as we can, especially Passive House or LEED certified homes. This makes mechanical ventilation essential i...

The importance of Cleaning HRV intakes
HRV and ERV

How to keep your HRV clean and operating efficiently

Why cleaning HRV units is so important  When any machine has its normal operation hampered, it will reduce its efficiency and ability to function properly. Many of us are probably guilty of forgetting about basic maintenance of some of the mechanical equipment in our homes; keeping your HRV (heat recovery ventilator) c...

Heat Recovery Ventilation - Lunos video
HRV and ERV

Lunos ductless air exchanger

Almost daily, new products come on the market that are more efficient, more effective, and/or more innovative. The ones we are really impressed with will make it here to our product of the month feature. Today we look at a new solution for changing the air in your home while maintaining excellent energy efficiency in h...

Ecodrain greywater heat recovery unit
Greywater Heat Recovery

A new design in greywater heat recovery

Sustainable construction is on the move! It seems almost every day a new and innovative product shows up on the market that is more efficient, more effective, greener and healthier. We regularly cruise the web looking for such gems and our latest find is a new system for greywater heat recovery that looks quite promisi...

Grey water and heat recovery shower
Bathrooms

EcoVéa: recycled and cleaned shower water

After recently posting a story sharing the brilliance that is the Swedish Orbsys water and heat recycling shower, it was brought to our attention that there is a homegrown Canadian variety as well. The EcoVéa shower by Reveeco is made in Quebec, Canada, and works based on the same principles as the Orbys we recently wr...

Condensation on windows leads to mold & mildew in homes, ERV & HRV systems help
Ventilation

Ventilation & air exchangers

Homes built in the last 40 years in Canada are relatively airtight. Before that we generally relied on leaky uninsulated walls to provide fresh air and prevent mold and mildew, and they did that very well. Cost and comfort had us adding insulation, but not necessarily sealing our walls. The folly of this was quickly re...

Reducing the need for air conditioning
Heating and cooling

How to keep homes cool without air conditioning

  How to cool a home without AC While it's true that no matter where you live, be it urban, suburban or rural, the hottest days and nights of summer may have you dreaming of coolers climates. However, those living in dense urban areas will feel it the most, where ambient temperatures can be 5 to 9 degrees Celcius highe...

How to Vent Roofs - the Methods, Vent Types, Fans
Walls and Roofs

Why Roofs need to be ventilated and how to ventilate a roof properly

It is pretty much inevitable that at least some warm, moist air from living areas will find its way into the roof of a building and bring with it the very real risk of frost and ice forming in a cold climate, or mold and rot in a temperate climate. This is a simple product of physics and the realities and limitations o...

How do Heat Pumps Work? Ecohome Explains all about Heat Pumps...
Heat pumps, geothermal and AC

Heat pumps: what they are and how they work

Heat Pumps explained simply When it comes to residential heating and cooling systems, few types of heating systems are as energy efficient as heat pumps. But what exactly are heat pumps and how do they work? In short, a heat pump is simply an electrically powered device that is capable of transferring heat from one pla...

Geothermal heating vs. Air Source Heat Pumps
Heat pumps, geothermal and AC

Air Source Heat Pumps vs. Geothermal Heating: Which is Better for Your Home?

Geothermal vs. ASHPs - what's the difference? Heating and cooling systems play a crucial role in maintaining comfortable indoor temperatures in homes everywhere . With advancements in technology, homeowners have various options for energy-efficient heating and cooling systems. Two popular choices are geothermal heating...

Ductless mini-split air source heat pump installed in a LEED certified PH Home
Heat pumps, geothermal and AC

How mini split heat pumps work in a LEED or Passive House high efficiency zero net energy home - video

How well does a mini split heat pump work in a LEED or Passive House certified home?  Really well as it happens, see a great example of a split system heat pump installation in the Edelweiss LEED Platinum V4 Home below: The Edelweiss House has a radiant floor to keep our feet comfortable but we rely on a Mitsubishi Mr....