You’ve had a few companies look at your windows, and now their paperwork is sitting on your kitchen table. The totals don’t match. Some come with a page of details, and some are barely more than a number. So how do you tell which one actually gives you the quality you’re paying for?
This guide answers that question. It covers what to look for in a window quote, from the windows themselves to how they’re installed and who installs them, so you can compare offers on what they include, not just what they cost.
Key Takeaways
- A reliable window proposal should come after a visit to your home, and list each window’s type, size, frame and glass, along with the warranty and who handles permits.
- The lowest price isn’t always the best deal, so ask each company to explain what’s behind its price.
- The U-factor measures how well a window keeps heat in, so comparing it on each estimate shows whether you’re getting the same level of insulation, and whether the windows meet the 1.22 (metric) threshold BC rebates currently require.
- A detailed proposal explains how your windows will be installed and who will install them, because that’s who you’ll call if something goes wrong.
If you’re also looking for price ranges and rebates, our 2026 BC window cost guide covers budgets and rebate eligibility.
Why Two Window Replacement Quotes Can Look So Different
When the totals don’t line up, it’s tempting to lean toward the lower number. But it helps to first look at how each quote was put together. And the first thing worth checking is whether anyone actually came out to see your home.
Some companies will give you a flat price per window over the phone. It sounds simple, and it’s easy to compare. But a phone price can’t account for what only a visit shows, like custom sizes or the extra structural work some openings need. Also, windows that face the coast need hardware built to stand up to the weather. Those costs don’t disappear because nobody counted them. They tend to show up later, as fees you didn’t see coming.
Even when two companies do visit, their quotes can still land far apart. And sometimes that gap is fair. A large picture window that doesn’t open is priced differently than a casement window, which needs hardware that cranks open and seals tight against the rain. Glass changes the price too. Triple-pane glass or a Low-E coating with argon gas costs more than a standard double-pane window, because it adds insulation and cuts more outside noise.
A higher quote isn’t always a padded one. It might just be pricing a better window. The only way to know is to see the details written down.
Consumer Protection BC, the province’s consumer protection agency, says the lowest estimate may not be the best deal. Their advice is to look closely at what each contractor is offering, and not be afraid “to ask for explanations of the price discrepancies.”
Before you compare: check that each quote is based on a visit to your home, and that each one describes the same windows and the same glass. If they don’t, you’re comparing two different jobs.
One of our customers told us that while other companies were only giving quotes over the phone, we came out to assess their home in person, and that it was one of the main reasons they chose us.
If the paperwork in your hand is a single number with very little behind it, it’s worth getting one you can actually read. At A1 Windows, we start with a visit to your home, so the estimate we give you is clear and exact, with no obligation to buy.
What a Complete Window Quote Should Include
What should you actually see when you look at a quote? Ideally, an itemized breakdown that reads like a written description of the whole job.
It starts with the windows themselves. Each opening should be listed on its own, with the window type, size, frame material, and glass. If one quote lists triple-pane casements and the other just says vinyl windows, you’ve found your first question to ask.
Next comes the work around the windows. Will the old windows be removed and hauled away? Who cleans up at the end? It’s also worth asking for a list of any work that isn’t included. A gap you can see now is much easier to deal with than one you find halfway through the project. At A1, for example, removing and recycling your old windows is part of the installation and already included in the window price, so it never turns up as a surprise later.
Then check the price itself. Clicklaw BC, a public legal information site, advises making sure taxes are included in the price. It’s a small detail, but it can make two quotes look closer, or further apart, than they really are.
The warranty deserves a careful read too. According to BetterHomesBC, a contractor’s warranty should describe what is covered and for how long. A line that just says “warranty included” doesn’t tell you either.
Insurance is also worth checking before you decide. The same BetterHomesBC guidance says your contractor should provide proof of liability insurance and up-to-date workers’ compensation coverage, which in BC means WorkSafeBC. That matters for you, too. WorkSafeBC warns that if the contractor you hire isn’t registered or is behind on their payments, you could be held liable for the premiums owed on your job. You can check any company’s status for free by requesting a clearance letter on WorkSafeBC’s website.
And finally, anything promised out loud should end up on paper. Clicklaw BC advises that any promise or guarantee a contractor makes should be put in writing.
Once you have them all, check that each one includes:
- The type of each window (like casement or sliding), plus its size, frame and glass
- Whether removing your old windows and cleaning up afterwards are part of the job
- Whether taxes are included in the total price
- What the warranty covers, and for how long
- Who’s responsible for any permits the job needs
Then ask each company for proof of insurance and WorkSafeBC coverage.
There’s one more thing that can change the price: how much insulation the windows provide. And it’s something you can actually compare from one company to the next, as long as you know which number to look for.
Energy Efficiency: How the U-Factor Influences Your Window Quote
You can check the level of insulation in the paperwork by looking for a rating called the U-factor. It measures how much heat escapes through a window, which tells you how well it keeps your home warm in winter. The lower the number, the better the window insulates. Think of it like a thermos: a good one keeps your coffee hot because very little heat gets out. A window with a low U-factor works the same way.
Before you assume the higher quote is overpriced, compare the U-factor listed for each window. If the windows on the higher quote have a lower U-factor, the price difference may come from better glass, like triple-pane or a Low-E coating with argon gas, which costs more than a standard double-pane window.
Whether better insulation is worth it for you depends on your home and what you need from your new windows. For example, if you’re dealing with cold drafts or heating bills that climb every winter, it can make a real difference. According to Natural Resources Canada, windows and doors can account for up to 35% of a home’s heat loss.
The U-factor can also change what you end up paying. Right now, if you live outside the City of Vancouver, windows need a U-factor of 1.22 or lower (measured in metric units, W/m²-K) to be eligible for the standard window rebate through CleanBC and BC Hydro. So an option with a higher U-factor might look cheaper up front, but its windows may not qualify. If the U-factor isn’t listed for each window, ask for it.
Good to know: BC window rebate rules change from year to year. Before you count on one, check the current requirements on the CleanBC Better Homes website. Our energy-efficient windows guide also walks through the ratings in more detail.
But the U-factor only tells part of the story. Even the best-insulated window only performs as well as it’s installed, which brings us to how your windows go in.
Installation: How It’s Done, and Who Does It
To be honest, a quote can list every detail about your windows and still tell you almost nothing about how they’ll go into your wall. Sometimes, all you’ll see about the installation is a single line that just says “installation.” But in BC’s wet coastal climate, that line carries a lot of weight. As we say in our energy guide, the most expensive, energy-efficient window in the world won’t do its job if it’s installed poorly.
So what should you look for? A good sign is a reference to the BC Housing Best Practices Guide. It sets out how windows should be installed so the outer shell of your home stays weatherproof. In the fine print, you might see it written as rainscreen installation, proper flashing, or installed to current building code. If you don’t see anything like that, it’s worth asking the company to explain how they’ll install your windows.
Then there’s the question of who’s actually doing the work. Some companies sell windows made somewhere else and hire a separate window installer to put them in. That can work, but if something goes wrong later, it’s not always clear who’s responsible for fixing it.
When the same company builds your windows and installs them, that question has a clear answer. There’s no finger-pointing between a manufacturer and an installer, and if something needs attention, you know exactly who to call. That’s how we work at A1. As a local window manufacturer, we build our windows at our Lower Mainland facility, and our own installation crews put them in, following the BC Housing Best Practices Guide.
Whichever companies you’re comparing, ask each one: will your own crew install my windows, or will you hire another company to do it?
Once you have those answers, you’re ready to put your options side by side.
Conclusion
When you’re comparing offers, it’s natural to go straight to the total. But that number on its own tells you very little. The details behind it tell you much more, like the type, size, frame and glass of each window, its U-factor, how it will be installed, and who will do the work.
The easiest way to see those details is to lay your pricing breakdowns next to each other and go through them line by line. If something’s missing, ask.
And if you’d like clear pricing that covers all of this from the start, we’ll do a thorough site assessment of your home and give you transparent pricing, with no pressure to buy.
Prefer to talk it through? Call us at 604-777-8000.
Written by Brandon P., Sales Manager at A1 Windows.
Credentials: With 25+ years in the local window installation sector, Brandon leads our residential and commercial installation teams, providing transparent, no-pressure guidance to BC homeowners.
