Uf describes the frame and sash profiles
The catalogue gives Uf 1,1 W/m²K for IDEAL NEO MD. This describes the profiles, not the glazing alone or the complete window. A lower coefficient means less heat transfer under comparable conditions. It does not, by itself, establish the performance of a window with your chosen dimensions.
AD and MD have different catalogue Uf values: 1,2 and 1,1 W/m²K respectively. To assess a quotation for your home, take the comparison further. Check that the windows have the same dimensions, divisions, glazing and equipment. Only this information connects the profile difference to the actual product.
Ug describes the glazing
The insulating glass unit has its own Ug coefficient. Choose it with the room's function and project requirements in mind. Glazing thickness, the number of panes or a general description such as thermally efficient glass does not replace the full glass unit specification.
Also ask about the spacer bar and the connection at the glass edge. They form part of the complete-window assessment. Record any other glazing requirements separately, such as protection from noise or excessive sunlight. Selection should address all needs rather than a single low figure. KM Okno can confirm the possible combination of profile, glazing and equipment.
Uw allows complete windows to be compared
The catalogue gives Uw 0,76 W/m²K for an IDEAL NEO MD reference window. This applies to dimensions of 1230 × 1480 mm with Ug 0,5 W/m²K glazing. Changing the size or divisions changes the proportion of frame and glass, so this figure must not automatically be assigned to every window in a schedule.
Request Uw for the dimensions and configuration being ordered. If the seller provides a reference result, its conditions should be clearly stated. Keep this information with the quotation. It will support discussion with your designer and help establish whether the performance meets the requirements set for the building and its individual elements.
Connect performance with installation and use
A window is part of a building, so discuss its selection together with the installation scope and the finished connection to the wall. State the construction stage, planned insulation and preferred work date. This helps the quotation address the actual project.
Do not turn a difference in Uf alone into a promised saving on heating bills. Such savings depend on many conditions across the building and how it is used. For IDEAL NEO MD, focus on confirmed window specifications, compliance with the design and a clearly described installation. These provide a practical, verifiable basis for choosing before placing an order.
