Last updated: August 2026
For many people, the words “factory-built home” still bring back memories of cold temporary buildings, draughty classrooms or lightweight structures never designed for permanent living.
Modern panelised construction is a very different category. A properly designed permanent home should not rely on a powerful heating system to compensate for a weak building envelope. It should hold onto heat in the first place. That is the principle behind TheHouz.
Warmth is a system, not a material
A comfortable low-energy home needs three things to work together:
insulation + airtightness + controlled ventilation
Insulation slows heat loss. Airtightness limits uncontrolled draughts. Ventilation provides fresh air and removes moisture without relying on gaps around windows and doors. Get all three right and the heating system has far less work to do.
1. Continuous insulation
TheHouz uses a high-performance insulated building envelope designed around continuous thermal protection. Rather than relying only on insulation fitted between structural members, the principal insulation layer runs continuously across the building envelope. That matters because every interruption in insulation can become a thermal bridge. The TheHouz approach separates the functions of the wall:
steel frame — structure
continuous insulated envelope — thermal performance
airtightness layer — air control
ventilated façade — external weather protection
Each layer has a clear job.
Why continuity matters
Insulation performance is not only about thickness. A very thick insulation product badly installed can still perform poorly.
Junctions around:
- windows;
- doors;
- corners;
- roof interfaces;
- floor interfaces;
- and structural connections
all matter.
TheHouz uses repeatable panelised details so these junctions can be designed and produced consistently rather than improvised on every site. That is one of the main advantages of controlled factory manufacture.
2. Airtightness: stop heating the outside
Older buildings often lose heat through uncontrolled air leakage. Warm air escapes through small gaps around junctions and penetrations, and cold outside air is pulled in to replace it. You experience that as draughts. TheHouz uses a dedicated airtightness strategy with sealed and coordinated junctions through the building envelope. The objective is not to make the house “sealed shut”. It is to separate: uncontrolled air leakage from designed ventilation.
That distinction is fundamental to modern high-performance construction.
3. Fresh air without uncontrolled draughts
Once uncontrolled leakage is reduced, the home needs intentional ventilation.
Depending on the selected specification, TheHouz can use mechanical ventilation with heat recovery — MVHR. The system extracts stale and moisture-laden air from wet areas such as bathrooms and kitchens while supplying filtered fresh air to living spaces and bedrooms.
Heat from the outgoing air is recovered to temper the incoming fresh air during the heating season. That gives the home fresh air without depending on permanent draughts through the building envelope. Airtight does not mean unventilated. It means ventilation happens where and how it was designed to happen.
The heating system gets an easier job
Once heat loss through the building envelope is reduced, the heating requirement becomes smaller. That allows the heating system to be sized around the actual calculated demand rather than compensating for unnecessary losses. Depending on the home and selected specification, TheHouz can use:
- air-to-water heat pumps;
- low-temperature radiators;
- simpler electric heating solutions for certain compact homes;
- and optional cooling where specified.
The important point is that the heating system is selected after the building demand is understood.
Fabric first. Equipment second.
Why heat pumps work particularly well in an efficient home
Heat pumps perform best when they can operate steadily at relatively low water temperatures. A well-insulated, airtight home makes that much easier. The building loses less heat, so correctly sized radiators can deliver the required comfort without demanding unnecessarily high flow temperatures. That improves the operating conditions for the heat pump. The machine matters.
But the building it is connected to matters even more.
What about solar and batteries?
Solar PV and battery storage can further reduce how much electricity the household needs to buy from the grid. But they should come after the basics. Installing more technology on an inefficient building does not fix the underlying heat loss.
TheHouz therefore approaches energy in this order:
1. Reduce demand
2. Heat efficiently
3. Add generation and storage where it makes sense
4. Control the whole system intelligently
Solar-ready infrastructure, PV, batteries and smart controls can then be integrated according to the selected home and destination market.
Does steel make the home colder?
Steel conducts heat very well. That is precisely why a steel-frame building needs the correct insulation strategy. TheHouz does not rely on the steel frame itself for thermal performance.
The principal insulation layer is designed to run continuously across the structural system, reducing the effect of thermal bridging through the steel.
In simple terms:
the steel carries the building.
The insulation keeps it warm.
That combination is deliberate.
What about moisture and winter conditions?
Winter does not only test heating. It tests the whole building envelope. Cold external temperatures increase the risk of condensation where internal surfaces become too cold.
The TheHouz insulation, airtightness and ventilation strategy is designed to work together to keep internal surfaces warmer and control indoor moisture. The objective is to reduce the conditions that allow persistent condensation and mould to develop. That is why warmth, ventilation and moisture control should never be considered as separate subjects.
Built for different European climates
TheHouz is being developed as a European home platform. A winter in Ireland is not the same as a winter in Latvia, Scandinavia, Germany or southern Europe. Insulation requirements, heating demand, cooling demand, solar exposure and local regulations vary. The underlying construction principles remain consistent, while the final specification can be adapted to the destination climate and applicable requirements. That is more important than claiming that one identical specification is perfect everywhere.
How warm will my specific home be?
The responsible answer depends on the actual project.
The performance of a home is influenced by:
- size;
- glazing;
- orientation;
- insulation specification;
- airtightness;
- climate;
- heating system;
- ventilation;
- and occupant settings.
That is why TheHouz develops the technical specification around the selected home and destination rather than relying on one generic marketing number.
For customers, the useful documents are:
U-values · energy calculations · system specifications · airtightness targets · commissioning records
Those tell you far more than the phrase “very warm”.
See it in a real home
Technical numbers matter. So does experiencing the building. The TheHouz L Family™ show home allows customers to experience the room proportions, finishes, acoustics and indoor comfort of the system in person. For customers who cannot visit immediately, the virtual tour provides another way to explore the home before configuring their own.
Frequently asked questions
Are TheHouz homes warm in winter?
Yes, they are designed as high-performance permanent homes with a highly insulated envelope, controlled airtightness and designed ventilation. Actual heating demand depends on the specific home, climate and selected specification.
How are TheHouz homes insulated?
TheHouz uses a continuous high-performance insulated building-envelope strategy rather than relying only on insulation between structural members. The exact insulation thickness and specification can vary according to the home and destination market.
Are panelised homes colder than traditional masonry homes?
No construction category is automatically warmer or colder. Thermal performance depends on insulation, thermal bridging, airtightness, glazing, ventilation and workmanship. A well-designed panelised home can achieve very high levels of energy performance.
What heating system does TheHouz use?
Depending on the home and specification, TheHouz can use air-to-water heat pumps with correctly sized low-temperature emitters or simpler electric systems for certain compact homes.
Optional cooling can also be incorporated where specified.
Do I need underfloor heating to stay warm?
No.
In a highly insulated home, correctly sized low-temperature radiators can provide excellent comfort and work efficiently with a heat pump.
Do airtight homes feel stuffy?
They should not.
Airtightness controls unwanted leakage. The ventilation system provides intentional fresh air.
With a properly designed and commissioned system, the two work together.
Can TheHouz achieve a high energy rating?
TheHouz is designed for high energy performance, but the final rating depends on the country, assessment method, home configuration and selected systems.
The target performance should be confirmed for the specific project rather than assumed from the construction method alone.
The principle is simple
A warm home is not created by installing the biggest heating system. It is created by reducing the amount of heat that escapes.
Insulate continuously.
Control air leakage.
Ventilate properly.
Size the heating system correctly.
Then let the building do most of the work.
That is how TheHouz approaches winter comfort.