We’re assuming anyone reading this blog is already convinced we need to act on climate change. For anyone who wants to know more, or wants to see Al Gore be positive (really!), check out this February 2016 TED talk. Al says we’re gonna make it. After watching this, we feel even more determined to dig deep and see what changes we can make. http://www.ted.com/talks/al_gore_the_case_for_optimism_on_climate_change#t-147031
I (Maureen) plant for early, early blooms, because I particularly love that. My first flowers usually bloom at the end of March (one year in three), or the first week of April (two years out of three). This year my first flowers (a bunch of snowdrops) were in full bloom on February 26. As a gardener, I’m thrilled. As an inhabitant of planet Earth, I’m horrified at the damage we’re causing.
And so – to work.
In February we took a closer look at our natural gas consumption.
Step 1. Test for drafts
Requirements: 1 stick of incense, a small bowl to tap the ash into, a flashlight, a notebook and a pen. Price: $0.00.
Recommendations: Do not do it within days of dental surgery. The incense made Mark a little woozy. We turned off the furnace and turned on the fans that vent to outside to create negative air pressure in the house. A windy day might help. Body movement creates drafts, so wait a moment after moving to let air currents settle down. Bright light makes it harder to see the smoke, but in the darkest corners a flashlight is required.
Usefulness: Smoke from the incense stick was much more sensitive than our hands for finding drafts. Both were better than our guesses of where the drafts were coming from (um…that would be places we can see light shining through).
We had some ideas of what was drafty, so we knew where to start. We found some surprises (of course), including a cobweb collected by the incense stick (which thankfully did not catch fire). Our lovely fifteen-year-old double paned argon-filled reproduction wood sash windows have some problems with weather-stripping. We mapped out the drafty spots in awkward sketches in the notebook.
We found a few drafts around the front and back doors (not as much as we expected), and some of the power plugs are drafty, though not all of them. Years ago we put in those little insulation things you put in power plugs (Google says it’s an electrical outlet and light switch plate draft stopper foam gasket). We’ll need to check on some of them.
We’re also curious about the roof (the snow-melt pattern tells us there are warmer and cooler patches). Our back entry is cold and drafty in nasty weather (it’s a lean-to added after the house was built, long before we owned it). Mark suspects there are some air leaks in our dugout basement that houses the furnace (this is ladder and flashlight land where Maureen dares not venture because allergies).
Step 2: Furnace and Water Heater Efficiency
The furnace is rated at 92% efficiency. This is officially high-efficiency but not brilliant. Best available is 97%.
The water heater has an EF rating of .59 (no idea what that measures). The Energuide range for new water heaters ranges from .52 (worst), to .80 (best). Ours is sitting firmly on the low end. Now we know – when the water heater dies, have a chat with the electrician about energy efficiency before he installs a new tank.
Step 3: The Energy Assessment
Thursday, February 11 Kerry Webb from Calgary Thermal Vision spent the morning inspecting our house with a thermal camera. Price $315, including GST. www.calgarythermalvision.com
The biggest hassle was moving furniture and pictures 18” away from exterior walls the evening before, to let the wall temperature adjust. It was a challenge to keep the house functional, while we shuffled furniture in crowded rooms, and piled all the extras in our offices.
It’s a good thing we didn’t rent a thermal camera on our own – we would have had no idea what we were looking at. Having a knowledgeable guy attached to the camera was very good. Kerry inspected the entire house, inside and out, including the dugout basement. There are lots of small things we can work on, but there was nothing horrific. He gave us tips on how to tackle the problem areas.
The photos are of the west side of our house, with a regular camera and a thermal camera. Kerry says all houses will show some heat loss along the base of the house. The important thing is the temperature difference. By insulating along the rim joist we can reduce the amount of heat loss. That’s probably the biggest task we’re going to tackle. Well, not we. Mark will. Maureen does not venture into the basement.
The back entry is cold because it has no foundation. More insulation won’t fix that. The roof insulation isn’t brilliant, but because of the oddities of how the house is constructed brilliant isn’t possible. This is not where we’re going to make great gains. The windows have some gaps in weather-stripping we need to repair. There’s a cold spot on my office ceiling that has no explanation – we’ll check the eavestroughing outside that window to see if there’s a leak. Mark is insulating around the dryer vent and the old gas pipe that’s been cut off and plugged but not insulated. We’ll put some insulation in the no-longer-used, incorrectly-installed cable outlet that’s drafty.
There was nothing here desperate for attention, and nothing worth putting a lot of money into. This was a huge surprise, but perhaps it shouldn’t have been, as we know our gas consumption is lower than average.
And so, in our quest to find the changes that will give us the biggest bang for our buck, March will be all about electricity. We’ll check our appliances and try to break down our electricity use, looking for the most efficient changes to make.