Exterior doors: your home’s calling card — and a key to energy savings
Exterior doors are not only a home’s visual showcase and an important architectural element — their thermal insulation performance matters just as much. This is expressed by the so-called U-value. In today’s world, where energy efficiency and environmental protection are increasingly important, the thermal transmittance of your doors plays a crucial role.
What is the U-value?
The U-value, also known as the thermal transmittance coefficient, measures how much heat passes through building elements such as walls, roofs, windows, and doors. The lower the U-value, the better the thermal insulation — which directly translates into reduced energy consumption and lower heating bills.
What affects the thermal transmittance of a door?
A door’s U-value depends on several factors:
- the material it’s made from,
- the thickness of the door leaf,
- and the type and quality of insulation used inside.
Modern technologies allow for the production of highly energy-efficient doors — even those with glazing — without compromising on aesthetics.
U-values and the “Clean Air” Program
Regulations introduced in January 2021 tightened the legal requirements for the U-value of exterior doors. Additionally, Poland’s Clean Air Program offers financial support to homeowners looking to improve the energy efficiency of their property — including upgrading to better-insulated doors.
The Clean Air Program was created to combat smog, improve air quality, and support measures that reduce energy consumption. It provides funding for a full energy audit as well as a range of improvements such as replacing outdated heating systems, insulating roofs, walls, and floors, installing domestic hot water and central heating systems, and even small photovoltaic installations.
The program also covers window, door, and garage door replacement — allowing you to switch to a door that meets modern energy-efficiency standards with a compliant U-value.
To find out if you qualify, explore the details and funding conditions — this support can help you modernize your home, making it more eco-friendly and cost-effective to run.
A smart investment
Investing in a door with enhanced thermal insulation is money well spent — and it will pay off through lower heating costs. Over time, it’s a decision that truly makes sense. A high-quality door with a favorable U-value not only results in real energy savings, but also improves indoor comfort and supports environmental sustainability.
Take a look at our range and choose a door that meets the Clean Air Program criteria.
We especially recommend:
Pantor System 72 Passive — with an outstanding U-value of 0.75 W/(m²·K),
as well as the Pantor System 72 Solid, Pantor System 72 Glazed,
and Pantor System 55 Solid lines.
