Dual, independent sash operation puts you in control — optimize airflow without sacrificing comfort or efficiency

Durable framing, multi-layer sealing, and premium hardware

Featuring a tilt-in design, these windows allow for safe, interior cleaning of both sashes

Double Hung Windows

Double hung windows are vertically sliding operable units with two independently moving sashes. The upper and lower sashes can be opened to control ventilation and airflow. This configuration does not project inward or outward, and is commonly used where exterior clearance matters, including walkways, porches, patios, and street-facing elevations.

Tilt-in sashes provide interior access for exterior glass cleaning and routine maintenance. Available in double or triple glazing, Window Force double hung windows are manufactured for consistent operation, structural stability, and ENERGY STAR® compliant configurations in Canadian climate conditions.

Dual sashes

Tilt-in mechanism

Sealed unit

Internal chambers

uPVC material

Jamb extensions

Fusion welded corners

Inside trim

Outside vinyl brickmoulds

Factory
direct pricing

Manufactured
in Ontario

Fast stock
turnaround

Volume
discounts

Key
Features

Vertically sliding upper and lower sashes

Independent operation of both sashes

Tilt-in sash design for interior cleaning access

Flush bolts for upper sash securement

Multi-point locking system

Optional night latch for additional security

Push-down spring-loaded screen system

Designed to meet ENERGY STAR® qualifications

Available in double or triple glazing

Frame & Structural Design

Designed for compatibility with standard North American wall assemblies and installation practices.

Multi-chamber vinyl frame for improved rigidity

Reinforced sash construction for long-term durability

Optimized frame geometry to support thermal performance

Engineered to support both double and triple-glazed insulating glass units

Glazing Options

Double Glazing

Two panes of glass separated by a sealed air or gas-filled cavity

Triple Glazing

Three panes of glass separated by two sealed insulating cavities

Energy Star

High-performance configurations compliant with standards

Glass Coatings

Multiple glass coatings and performance options available

Configurations

Casement windows support standard Window Force customization for consistent detailing across projects. All selections are standardized across Window Force window systems to ensure compatibility and clean integration.

Colour Options

At Window Force, we offer a carefully curated palette of durable, fade-resistant colours designed to match any architectural style, from classic to contemporary.

Explore Colour Options

Jambs, Casing, Brickmoulds

Jambs, casings, and brickmoulds come in a variety of sizes to suit different needs, and they're available in a full color palette to complement your design vision. These components provide versatile options for functional and aesthetic window finishing.

Explore Options

Glass Options

We provide a wide range of advanced glass types tailored for modern window systems. From partially transparent decorative glass with artistic textures for enhanced privacy, to high-performance Low-E coatings that improve energy efficiency.

Explore Glass Options

Grills Options

If you want to enhance your windows with decorative pane patterns, we offer a flexible range of interior grill shapes to choose from — from the most common layouts to fully custom designs made to fit your style.

Explore Grills Options

Energy Performance

Double hung windows are designed to meet ENERGY STAR® requirements across applicable climate zones. Performance values vary by glazing configuration, series selection, and overall window size.

Energy Ratings Table

The Energy Rating table provides a high-level comparison of typical double and triple-glazed configurations. Values are intended for general specification guidance and comparative evaluation.

Glazing Type	Energy Rating	U-Factor (W/m²·K)	SHGC	Most Energy Efficient
Double Pane	35	1.4	0.53	No
Triple Pane	35	1.04	0.43	Yes

Energy ratings shown reflect representative configurations. Actual performance values vary depending on glazing package, series selection, and final window configuration.

Certified Performance Data

Certified performance values are available for select double hung window configurations and are verified through NRCan and NAFS testing. The table below outlines tested and registered window configurations based on glazing package and ENERGY STAR® zone compliance.

Model	DHT_IS_CLRCARD-ARG90-CARD180#3	DHT_IS_CLRCARD-ARG90-CARD180#3-ARG90-CLRCARD
U-factor (W/m²·K)	1.71	1.66
Solar Heat Gain (SHGC)	0.52	0.47
Energy Rating	31	30
ENERGY STAR Zones, 2015	1 \| 2	1 \| 2
ENERGY STAR Zones, 2010	ABC	ABC
Layers of Glazing	2	3
NRCan Reference	NR9161-12602012-ES	NR9161-12602016-ES
Energy Efficiency Verification Reference	W535-1	W535-1
U-factor (Btu/h/ft² – °F)	0.3	0.29
Visible Transmittance	0.59	0.54
Air Leakage — Infiltration (l/s·m²)	0.44	0.44
Air Leakage — Exfiltration (l/s·m²)	0.76	0.76

Actual performance values vary by glazing package, series selection, and configuration.

Size Limitations

The table below outlines standard double hung window size limitations for the Canadian market. Maximum dimensions depend on glazing configuration and structural performance requirements.

Pane	Width, min — max	Height, min — max	Max Sq.Ft.
Double Glass	15" — 46"	28" — 58"	21 sq.ft.
Triple Glass	15" — 36"	28" — 54"	13.5 sq.ft.

Actual size limits may vary based on series selection, glass thickness, and project-specific requirements.

Warranty Coverage

Full warranty details

Lifetime warranty on white vinyl frames and vinyl sash members
20-year limited warranty on insulating glass units
15-year limited warranty on hardware components

15-year limited warranty on painted finishes
Fully transferable warranty at no additional cost

Frequently Asked Questions

What are double hung windows and how do they operate?

Double hung windows feature two operable sashes — top and bottom — that slide vertically within the frame. Both sashes can tilt inward, making them easy to clean from inside the home. They offer flexible ventilation: open the top, bottom, or both for airflow control. Compared to single-hung windows (where only the bottom sash moves) or sliders (which open side to side), double hung designs provide more control and often include integrated screens and smooth-operating hardware.

What should Toronto and GTA homeowners know about double hung windows?

Double hung windows are a natural fit for many Toronto-area homes — especially those with brick or siding exteriors. They're available in standard and custom sizes, come with energy-efficiency certifications like Energy Star, and help reduce noise from busy urban streets. Window Force products are fully backed by warranty, with service coverage across the GTA.

What are the advantages of double hung vinyl windows?

Vinyl double hung windows offer lasting durability with minimal upkeep. The multi-chambered frames enhance insulation, while color and hardware options let homeowners match any design. Unlike the myths, modern vinyl is strong, stable, and long-lasting, especially when manufactured to local performance standards like ours at Window Force.

How can you buy double hung windows from Window Force?

It starts with a quick quote request online. From there, our team walks you through product selection, measurements, and customization. Once your order is confirmed, we build the units and arrange for delivery or pickup. Lead times are clearly communicated, and warranty registration is part of the process for peace of mind.

How does Window Force manufacture and test double hung units?

Each unit begins with precision-cut extrusions sourced from trusted suppliers. We weld corners for maximum strength, test drainage, and inspect sash movement and lock alignment. Our QA checkpoints cover appearance, operation, and sealing, so only high-performing windows reach the customer.

Which installation details matter for long-term performance?

A quality window needs a quality install. Prep the rough opening carefully, shim properly to ensure square alignment, and follow correct fastening patterns. Use sealants that last, and finish with trim that protects. Miss any of these, and you risk air leaks, water entry, or callbacks.

How does Window Force work with contractors on double hung supply?

We offer contractor pricing tiers, dependable stock, and jobsite delivery options. Our team supports each build with shop drawings, guidance, and fast RMA turnaround when needed. Whether it's a single home or a full subdivision, Window Force makes supply simple.

Why do dealers choose Window Force for double hung models?

Because we deliver what they need to succeed. That means consistent lead times, competitive margins, marketing support, product samples, and training for their teams. And when something goes wrong? Our after-sales service keeps dealer relationships strong.

Double Hung Windows

Key
Features

Frame & Structural Design