Expertise in patented Integrated Renewable Energy Solutions, Ireland, NI

NuTech Solar Passive House

NuTech Solar Passive House

NuTech Solar Passive House Concept by Mark Forkin and Bill Quigley. It came from the design and systems used in the original Passive Solar House in Knocklyon. Since Knockyon was built the the passiv haus instuitte has been formed, and the standards of a passive house has changed.Passive Houses are highly insulated, airtight, cold bridge free structures with triple glazing and HRV that need minimal heating. This has meant the company has been testing green energy systems against the Passivhaus standards. This has allowed them to find the best solar passive House solution while saving the home-owner money.

A typical Passivhaus has the following features to achieve high comfort levels.
  • A Passivhaus has a low heating demand.
  • High levels of insulation. Minimal thermal bridges.
  • Passive solar gains and internal heat sources.
  • Excellent level of airtightness.
  • Excellent indoor air quality. This is done via by a whole house heat recovery mechanical ventilation system.

NuTech patented Solar Passive House Solar Heating System.

In a NuTech Solar Passive House the first thing you notice is the number of solar panels. You want to collect as much solar energy as possible. So you will find you will find more solar panels installed on the roof than a normal solar hot water heating system. The patented NuTech Solar Enhanced Ventilation (SEV) heats hot water and gives solar assisted air heating to rooms in a home.

NuTech Solar Passive House

Low levels of solar radiation are found in winter months in Ireland. As a result in most cases the solar energy collected would be to weak to heat water in a solar tank. So a normal solar hot water heating system would not work.

In winter the SEV solar panels will collect this low grade solar energy. The low grade solar energy is then sent to a air handling unit. The SEV System then sends out warmed air at 28C to the house. This warms the air in the home. The heating demand is reduced. As a result it now takes less energy to heat your home. So this saves you money and helps to reduce your heating bill.

NuTech Solar Passive House and Indoor air quality.

NuTech Solar Passive HouseA Positive Input Ventilation (PIV) system improves indoor air quality.It removes condensation from the air inside a home. It removes allergens such as dust mites, and the pollutants caused by cooking and cleaning from the air. Plus radon gas are kept to a minimum.
In a NuTech solar passive house the Sev system works like a Positive Input Ventilation (PIV) system. The Ires panel monitors the conditions in the house. It then adjusts the fans in the ventilation unit. This ensures comfort levels and freshness in the house, and good indoor air quality.

NuTech Solar Passive House and Air tightness.

NuTech Solar Passive HouseUnwanted air leakage increases the heating demand of a home. It can cause the homeowner discomfort from cold draughts. Air leakage can lead to long term problems in the building fabric . For example interstitial condensation. Air leakage can contribute to reduced levels of Indoor Air Quality.
In a NuTech solar passive house the Sev system works like to a Positive Input Ventilation (PIV) system to pressurize a house.This is important as it helps to reduce  heat loss and air leakage, i.e warm hot air escaping.

Heat Loss via Thermal Bridging in a Solar passive House.


NuTech Solar Passive HouseMininal Thermal Bridging is needed for Passivhau houses. Thermal Bridging can cause heat loss and condensation in the home. It can be found in windows, walls and roof sofits. So it is no surprise that Thermal Bridging is an important factor in the DEAP analysis of a passive house.

A NuTech Solar passive House is built via a timber frame company like KTF Ltd. They use a insulation system which reduces the amount of Thermal Bridging . Future Frame is a Timber Frame System that will make you home air-tight and low energy. Future Frame Passive has a thermal bridging factor of .02.

A  technical comparison of the NuTech Solar Passive House and Traditional Passive House in Ireland

                                             NuTech Passive Solar House      Passive House Standard
DEAP Calculation.                46 kWh/m2.Year                               46 kWh/m2.Year
Indicative BER.                     A2                                                           A2
Floor area.                              200 m2                                                  200m2
Ex Wall (U-Value) .              0.16 W/m2K                                        0.13  W/m2.K
Windows + Doors.                1.20 W/m2.K                                       0.80 W/m2.K
Ground Floor.                        0.12 W/m2.K                                       0.12 W/m2.K
Roof.                                        0.14 W/m2.K                                        0.14 W/m2.K
Thermal Bridging .               Equal                                                      Equal

 The NuTech solar passive house has four differences to the typical PHI requirements.

NuTech Solar Passive House1: The External Wall U-Value o 0.16 W/m2.K . A timber frame will have a reasonably sized stud. This then has internal insulation fixed to it. This will reduce the effect of thermal bridging.

2: The Window U-Value 1.2 W/m2.K . To reduce costs you can fit double glazing. This is less expensive than triple glazing windows.

3: The level of Air Infiltration 1.0 ACH at 50 Pa. The Sev integrates the energy from the solar array into the HRV system. This achieves less than 1.0 ACH at 50 Pa Ø.

4: Solar energy. The patented NuTech Solar Enhanced Heating,hot water system (SEH) heats hot water and rooms in a home.

NuTech Passive Solar House offers cost and performance benefits.

  • NuTech Passive Solar HouseFaster thermal response. A back up heating system will talk to the ires panel. The heating systems become integrated. This gives the home a faster thermal response.

To reduce costs you can fit double glazing. This is less expensive than triple glazing windows.

The system meets Part F and Part L of the Irish Building Regulations.

  • The NuTech Passive Solar House achieves an A2 rating on SEI’s BER scale.
  • A NuTech Passive Solar House will achieve the same BER rating of Passiv Haus Institute design house a at a lower cost.
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Brand Name
NuTech Renewables Ltd
Product Name
NuTech Solar Passive House