HVAC / Guides

LEED Homes

The 19 LEED for Homes Prerequisites

...HVAC contractor, and an example of where an accountability form will need to be signed by the contractor ensuring proper steps have been taken. 7.1 Good filters Forced air systems must have air filters with a minimum efficiency reporting value (MERV) ≥ 8 and ensure that air handlers can maintain an appropriate syst...

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

Ventilation & air exchangers

...HVACs (Heating, Ventilation and Air Conditioning) or HRVs (Heat Recovery Ventilators). The point of these systems is to remove moisture and provide fresh air to your home that is pre-heated by the outgoing air. © Van EE The core of an HRV has small separated channels that air passes through, allowing incoming a...

The importance of Cleaning HRV intakes

How to keep your HRV clean and operating efficiently

...HVAC company (heating, ventilation and air conditioning) and have it be part of a regular maintenance of furnaces, air conditioners or even a chimney cleaning. Regular servicing is worth the money; it will pay for itself through less wear and a longer lifespan of equipment, but also in more efficient operation, and abo...

Which Houseplants are Best to Clean Air & Remove Toxins?
Healthy indoor air quality

Which houseplants are best for purifying air? Ecohome investigates

...HVAC design for homes would include a ventilation intake near the kitchen, which would pull out between 100 and 200 CFMs (cubic feet per minute) of air locally; there is no plant that can process that volume of air. Snake plants flood bedrooms with oxygen & promote sleep - or do they? Will a snake plant in the bedr...

Wildfire Smoke & How to Keep it Outside Homes
Healthy indoor air quality

How to keep wildfire smoke out of Green Homes with mechanical ventilation systems?

How to protect indoor air quality from smoke during wildfires in homes with HVAC? As we move towards summer in Canada and the USA, we're hoping that last years wildfires are not going to be as bad again this year - but unfortunately in areas like Calgary, there have already been air quality warnings issued as over 2...

Poly vapour barriers in air conditioned houses can cause mold and rot
Healthy indoor air quality

Why you should Never Install Air-Con in a Home with a Vapor Barrier

...HVAC installers won't tell a potential new client for central air; Polyethylene vapor barriers in combination with air conditioning in homes can rot walls because of the condensation they may cause. This is why if you have a newer home with a vapor barrier, you may be better waiting until the exterior siding needs repl...

Insulated Radiant Floor ICF Foam Forms Heated with Air
Delivery: radiant, forced-air and decentralized

Air-heated radiant floor slab foam forming systems

...HVAC systems will offer it and it is not an expensive upgrade. Can air-heated radiant floors deliver enough heat? Yes, they can. While it is true that much more heat can be transported by water than air, that doesn’t mean there isn’t enough. More power can be delivered by a Boeing jet engine than a 4-cylinder Toyot...

What is Interstitial Condensation? (And how to stop it!)
Walls and Roofs

What is Interstitial Condensation in Walls or Roofs? (And how to stop it!)

...HVAC installers won't tell potential new central-air clients about that fact. Polyethylene vapor barriers in combination with air conditioning in homes can rot walls because of the condensation they may cause. This is why if you have a newer home with an impermeable poly vapor barrier, you are at risk of drawing warm...

HEPA filters & SMART Air Filters catch airborne dust, pollen, allergens, viruses
Healthy indoor air quality

Buying guide for home air filters in furnaces - HEPA, SMART or Regular?

...HVAC unit. Fiberglass filters may be a lower cost option, but they need to be disposed of and replaced roughly every 30 days - which let's face it, most people don't. Then there are pleated air filters which are usually made of higher quality materials, and can last anywhere from three to six months depending on the ...

How to Choose between an HRV and ERV system

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 ...