Non Heated Units

Nuaire Drimaster

Nuaire Drimaster Eco Positive Input Ventilation (PIV) systems are the most effective way to prevent and cure condensation dampness. Recommended for both planned and reactive ventilation services, the concept is simple: introduce fresh, filtered air into your home at a continuous rate, encouraging air to circulate and escape.

Nuaire Drimaster How it works:

• Installation Nuaire Drimaster: The unit is mounted in your loft space.
• Nuaire Drimaster Fresh air intake: It draws in outside air, filtering it to remove pollutants and allergens.
• Nuaire Drimaster Distribution: The filtered air is then introduced into your home at ceiling level.
• Nuaire Drimaster Temperature control: An integrated heater ensures comfortable air temperature, even in colder lofts.

Ideal for:

• Nuaire Drimaster Social housing: Our 7 model types cater to various occupant preferences and house types.
• Nuaire Drimaster Residential properties: Extensive experience makes Drimaster-Eco a reliable choice for homeowners.
• Nuaire Drimaster Landlords: Our experts can advise on damp disrepair solutions and the benefits of Drimaster-Eco for landlords.

Nuaire Drimaster Experience the difference with Drimaster-Eco. Enjoy healthier, drier living spaces while improving energy efficiency.

A PIV Unit (Positive Input Ventilation) unit is a ventilation system designed to improve indoor air quality by continuously drawing in fresh, filtered air from outside and distributing it throughout your home.

Here’s how a typical PIV unit works:

1. Air Intake: A PIV unit has an intake vent located on the exterior of your home, usually on a high wall or roof. This vent draws in fresh air from the outside environment.
2. Filtering: The incoming air passes through a filter system to remove pollutants, allergens, and dust particles. This helps to ensure that the air being introduced into your home is clean and healthy.
3. Heating (Optional): Some PIV units may have an integrated heater that warms the incoming air before it’s distributed. This can be beneficial during colder months to maintain a comfortable indoor temperature.
4. Distribution: The filtered and heated (if applicable) air is then pushed into your home through a series of ducts or vents. These ducts are typically located in the ceiling or high on the walls.
5. Exhaust: The PIV Unit system doesn’t have a dedicated exhaust system. Instead, the fresh air it introduces gradually pushes out stale air through existing gaps and vents in your home, such as those around windows and doors.

Key benefits of using a PIV unit:

• Improved indoor air quality: Reduces the presence of pollutants, allergens, and moisture.
• Reduced condensation: Helps prevent dampness and mold growth.
• Energy efficiency: Can reduce the need for heating and cooling.
• Health benefits: Can improve overall well-being and reduce the risk of respiratory problems.

PIV Ventilation System

PIV Ventilation System (PIV) systems are designed to improve indoor air quality and reduce issues like condensation, damp, and mould in homes. Here’s a detailed explanation of how they work, their benefits, and some considerations:

How PIV Ventilation System Work
PIV systems introduce fresh, filtered air into a home, typically from the loft space. This air is pushed through a diffuser, creating a slight positive pressure inside the house. This positive pressure forces stale, humid air out through natural gaps and leaks in the building fabric, such as windows, doors, and vents.

Installation

Location: PIV Ventilation System are usually installed in the loft, making them suitable for houses with loft space. For homes without lofts, wall-mounted units are available

Components: The system includes a fan, filters, and a diffuser. Some models also come with heaters to warm the incoming air during colder months

Benefits

Reduces Condensation and Damp: By continuously supplying fresh air and expelling moist air, PIV systems help prevent condensation on windows and walls, reducing the risk of damp and mould

Improves Air Quality: The fresh air introduced is filtered, reducing indoor pollutants like dust, pollen, and volatile organic compounds (VOCs)2.
Energy Efficiency: PIV systems are generally energy-efficient, with low running costs. Some models include sensors to adjust airflow based on humidity or CO2 levels

Health Benefits: Improved air quality can reduce allergens and respiratory issues, making it beneficial for asthma and allergy sufferers2.
Considerations

Initial Cost: The cost of a PIV unit ranges from £250 to £500, with installation costs bringing the total to around £700-£1,00012.
Temperature Control: In winter, the system may draw in cold air from the loft, potentially lowering indoor temperatures. Heated models can mitigate this issue but may increase running costs

Building Regulations: Ensure compliance with local building regulations, as PIV systems do not act as extract ventilators

Pros and Cons

Pros

• Effective at reducing condensation and damp.
• Improves overall indoor air quality.
• Low running costs and energy-efficient.
• Beneficial for health, particularly for those with respiratory issues.

Cons

• Initial installation cost can be significant.
• May require additional heating in colder months.
• Not suitable for all property types, especially those without loft space

Nuaire PIV

Positive input ventilation (PIV) is the UK’s most popular low-energy whole home ventilation method. It looks to protect homeowners and tenants alike from the many harmful indoor air pollutants that can enter and remain within a home and lead to long-term health problems if not suitably resolved. Nuaire’s PIV units help you to breathe a little easier with the knowledge that the air in your home is filtered and fresh.

What is Positive Input Ventilation?

PIV is a highly effective cure for condensation dampness and its associated problems within residential properties. It pushes harmful air out of the home and replaces it with fresh, filtered air.

Invented by Nuaire in 1972, the technology is now installed in over a million homes. It’s tried, tested, and trusted.

How does Positive Input Ventilation work?

PIV works by drawing fresh air in through the unit that’s usually, but not always, installed in your loft. This air is then filtered and gently diffused at ceiling level, creating a positive pressure within the home that forces air pollutants out through the natural leakage gaps found in every UK property, both old and new.

When would you recommend using a PIV unit?

Positive input ventilation is a highly trusted, cost-effective, and simple solution to ensure clean air flows freely throughout your home, making poor indoor air quality a thing of the past. PIV units are used for a few different reasons, including the displacement of indoor pollutants, including stagnant and humid air. The installation of PIV units is generally recommended if you’re not looking to carry out a full renovation of your home yet require ventilation throughout the dwelling without removing any walls.

Does a PIV unit cure damp and condensation?

Condensation is a fast-growing problem: it’s estimated that one in five houses in the UK is poorly ventilated and at risk of streaming windows, mould growth and poor indoor air quality. The average family produces up to 10 litres of water daily through simple everyday tasks such as cooking, washing, bathing and drying clothes indoors.

New and modern homes are at risk of condensation: poorly heated homes are prone to condensation dampness. In contrast, well-insulated homes with double glazing or insulation can trap moist air inside the house. When it comes to curing damp and condensation, PIV is the most cost-effective whole home system in the market today: that’s why it’s trusted by so many homeowners and landlords across the UK.

How energy efficient are Nuaire’s PIV units?

Nuaire’s PIV units are incredibly energy efficient; that’s been a big focus for us ever since we invented this enduring and trusted ventilation strategy half a century ago.

Nuaire’s Drimaster-Eco range takes existing PIV technology a step further, effectively tackling the problem of condensation dampness whilst using up to 20% less energy than other competitors, meaning lower running costs and life cycle costs.

Air pollution and allergens aren’t limited to the outdoors, they’re a problem indoors too. That’s why we offer complete residential ventilation systems for new and existing homes, with support at every stage of your project.

Different types of Nuaire PIV

Nuaire DRI ECO LC
Nuaire DRI ECO HC
Nuaire Dri ECO HCS
Nuaire DRI ECO HEAT HC

A build-up of condensation is a common problem within homes of all types and sizes, especially in the winter months. Over a quarter of British homes (27%) already report an issue with condensation, damp, and mould. As condensation can cause damp and mouldy conditions within houses, it’s an important issue to solve. Luckily, there are clear steps to identify and solve a condensation problem.