If you’ve ever looked at your thermostat in October or November and thought,
“Why does it feel colder than that in here?”
you’re not imagining things.
Hot air can be escaping your home in ways you can’t always see, while cold air sneaks in through gaps, cracks, and weak spots in the building envelope. The furnace might be working hard, but drafts and air leaks quietly undo the comfort you’re paying for.
At Noah’s Home Comfort, we spend a lot of time in Ottawa-area homes that “just never feel warm enough,” even when the heating system is doing its job. Very often, the problem isn’t only the equipment—it’s the draft paths and air leaks that pull warm air out and draw cold air in.
In this blog, we’ll walk you through how we think about “draft-hunting”:
- The most common places warm air escapes and cold air enters
- How air leaks and your heating system affect each other
- Simple checks homeowners can do themselves
- When it makes sense to bring us in to look at both leaks and HVAC together
Our goal is to help you get more real comfort out of the heat you’re already paying for.
Why Your Home Can Feel Colder Than the Thermostat Reading
Let’s start with the basics.
Your thermostat measures the temperature where it’s located, usually on an interior wall in a central hallway or living area. It doesn’t always know what’s happening in:
- The corner bedroom over the garage
- The drafty front entrance
- The chilly basement rec room
If there are air leaks and drafts, you can easily end up with:
- Cold spots near windows and doors
- Floors that feel cold even when the air temperature is reasonable
- Rooms that never quite feel as warm as the rest of the house
Your furnace or boiler can be running exactly as designed, but the building envelope—the shell of your home—lets heat escape faster than it should.
That’s why we see draft-hunting as an important part of home comfort. Heating equipment and air sealing go hand in hand.
Where Warm Air Escapes and Cold Air Sneaks In
A big part of what we do is simply walking through a home with “draft goggles” on. We’re constantly asking:
“Where could air be moving in or out?”
Here are some of the most common trouble spots we see in Ottawa homes.
1. Windows and Window Frames
Even with newer windows, we often find:
- Gaps between the frame and the wall where air can leak
- Old or worn-out weatherstripping
- Latches that don’t fully close or seal properly
You might notice:
- A slight movement of curtains or blinds when the wind blows
- A cold draft when you sit near the window
- Frost or condensation patterns that suggest cold air is reaching the inner surface
We’re not window installers, but we can identify where air leaks are likely and help you prioritize what to address.
2. Exterior Doors and Door Sweeps
Front doors, side doors, and doors to garages are all prime draft candidates.
Common issues include:
- Worn or missing weatherstripping around the frame
- A door sweep or bottom seal that no longer touches the threshold
- Frames that have shifted slightly over time, creating small gaps
You may notice:
- Light shining through around the edges when the room is dark
- Cold air dropping across your floor when you stand near the door
- A chilly entryway that never quite feels comfortable
Sometimes a few simple adjustments and replacements can dramatically cut drafts in these areas.
3. The Basement Rim Joist and Sill Plate Area
The area where your home’s wood framing meets the foundation—the sill plate and rim joist—is one of the most common hidden air leak locations.
We often find:
- Small gaps where framing meets concrete
- Cracks or openings where utilities and vents pass through
- Uninsulated or under-insulated sections that let cold air in and heat out
You might feel:
- A chilling effect at floor level in the rooms above
- General coolness in the basement, even when the thermostat says it’s warm
We’ll often start our draft-hunt in the basement because what happens there can have a big impact on comfort upstairs.
4. Electrical Outlets and Switches on Exterior Walls
It surprises a lot of people, but outlets and switches on exterior walls can be small but persistent air leak points.
If the wall cavities are leaky, air can travel behind the drywall and find its way through tiny gaps around:
- Outlet covers
- Switch plates
In some homes, we’ve felt cold air movement when we place a hand near these spots on a windy day.
5. Attic Access Hatches and Recessed Lights
Warm air rises, and if it finds a path into the attic, it will gladly take it—and your heating dollars along for the ride.
Common attic-related leaks include:
- Poorly sealed attic hatches or pull-down stairs
- Older recessed lights that aren’t air sealed
- Gaps around pipes or chimneys that pass through the ceiling
These leaks can lead to:
- Heat loss into the attic
- Cold air being drawn down into living spaces to replace the escaping air
While we’re in your home, we often take a quick look at these areas and flag anything that seems like a likely leak source.
6. Gaps Around Pipes, Vents, and Wires
Wherever something penetrates a floor, ceiling, or exterior wall, there’s a chance for air to move.
We often see this around:
- Plumbing pipes
- Dryer vents
- Exhaust fan ducts
- Cable or electrical penetrations
Even small gaps can add up, especially if there are many of them throughout the house.
How Air Leaks and Your Heating System Interact
Drafts aren’t just uncomfortable—they also change how your heating system behaves.
Here’s what can happen when a home is leaky:
- Warm air escapes at the top of the house (attic leaks, upper floor leaks).
- Cold air gets drawn in lower down (basement, entryways, lower walls).
- This creates a constant upward movement of air, often called “stack effect.”
Your furnace or boiler is then tasked with heating:
- The air inside the house
- Plus the new cold air being pulled in through leaks
That means:
- More runtime for your system
- More uneven temperatures room to room
- Higher bills without a corresponding increase in comfort
From our perspective, adjusting the HVAC system without addressing major air leaks can be like trying to heat a house with a window left open just a crack all winter long.
Simple Draft-Checking Tricks You Can Try Yourself
You don’t need special equipment to get a rough sense of where drafts may be.
Here are a few simple things you can try:
The Hand Test
On a cool, breezy day, slowly move your hand:
- Around window frames and sills
- Along door edges and thresholds
- Near electrical outlets on exterior walls
- Around obvious gaps near pipes or vents
If you feel cold air, you’ve likely found a leak.
The Tissue or Light Fabric Test
Hold a small piece of tissue or very light fabric near suspected leak points.
If it flutters or moves when the furnace is running and the house is closed up, there may be air movement there.
Visual Checks
Look for:
- Light visible around door edges when the interior is dark
- Cracks in caulking around window and door trim
- Gaps between baseboards and floors, especially along exterior walls
- Old, compressed, or missing weatherstripping
These checks can help you create a list of “suspect areas” before we even arrive.
HVAC Adjustments That Support a Less Drafty Feeling
While sealing leaks is crucial, there are also HVAC adjustments we can make to help your home feel less drafty.
When we visit, we often look at:
- Airflow balance between rooms and floors
- Whether the fan setting could be used strategically to mix air more evenly
- How supply and return vents interact with the places you sit and spend time
A few examples of what we might do:
- Adjust duct dampers to reduce big temperature differences between levels.
- Suggest small furniture or vent-direction changes to avoid blowing cool-feeling air directly on you.
- Talk about thermostat strategies that reduce wild swings that can make drafts feel more noticeable.
We’re not pretending that airflow changes can magically seal leaks—but they can help you feel warmer and more comfortable when combined with better sealing.
When It’s Time to Call Us for a Draft and Comfort Assessment
You don’t need to wait until mid-winter to ask for help. In fact, fall is a fantastic time to ask us to look at both your heating system and draft issues together.
It’s a good time to call if:
- You’ve noticed persistent cold spots near certain windows, doors, or walls.
- Your home feels drafty even when the thermostat says you should be comfortable.
- You’ve already tried simple weatherstripping and still feel uncomfortable.
- You’re planning a furnace or heating upgrade and want to make sure the building envelope supports it.
When we visit, we can:
- Listen to your experience
You tell us where you feel drafts, when they show up, and how they affect your comfort. - Walk through the home with an eye for leaks
We’ll look at the usual suspects—windows, doors, basements, attics—while also paying attention to how your heating system interacts with those areas. - Check how your heating system is performing
We’ll inspect your furnace or boiler, look at airflow, and consider whether it’s sized and running appropriately. - Explain what we see in plain language
No jargon wall—we’ll show you where we think air is moving, how that connects to your comfort issues, and what can realistically be done. - Recommend practical next steps
Sometimes that means small fixes you can do yourself, sometimes it means bringing in other trades for sealing or insulation, and sometimes it means adjusting or upgrading parts of your HVAC system.
Our focus is always on practical comfort gains, not perfection on paper.
Getting More Comfort Out of the Heat You Already Pay For
We know that Ottawa winters can be long, and heating costs are a big part of home ownership. Draft-hunting and air sealing aren’t just about saving a few dollars—they’re about making your home feel:
- More consistently warm
- Less “drafty” around your feet and near windows
- More comfortable at a lower thermostat setting
By finding and reducing air leaks, plus making smart HVAC adjustments, we can often help you feel warmer without having to keep turning the thermostat up.
Call to Action
If your home feels drafty and colder than the thermostat says, or you’ve simply had enough of cold spots by windows, doors, and basements, we’re here to help.
Call Noah’s Home Comfort at (343) 227-6992 or email info@noahhomecomfort.com to schedule a draft and comfort assessment. We’ll walk through your home, look for hidden air leaks, evaluate how your heating system is performing, and recommend practical steps to make your Ottawa home feel warmer and more comfortable this season.
