Key Takeaways
- Both models have built-in heaters to warm incoming air
- Both come with a 5-year warranty for long-term reliability.
- Vent-Axia model is slightly cheaper compared to the Elta PIV ONE Plus+
- Both have low running costs of roughly £3 per year to run
When choosing between the Vent-Axia PoziDry Pro and the Elta PIV ONE Plus+, it can be difficult to determine which is the best fit for your home. Both models promise high-quality ventilation, energy efficiency, and effective condensation control, making the decision even trickier.
Why Use A PIV?
Mould, damp, and condensation are persistent problems in many UK homes, leading to unpleasant odours, structural damage, and even health risks like respiratory problems. Positive Input Ventilation (PIV) systems help combat these issues by improving airflow and reducing moisture levels inside a property.
Two of the most popular PIV systems available today are:
- Vent-Axia Lo-Carbon PoziDry Pro with Heater
- Elta PIV ONE Plus+ Loft Mounted Positive Input Ventilation Unit with Heater
Both systems introduce fresh, filtered air into your home to prevent condensation buildup, but which one is the best choice for your needs?
About the Brands
Vent-Axia
Vent-Axia is a well-established UK brand, known for providing high-quality ventilation, heating, and cooling solutions such as Heat Recovery (MVHR), Multivent Systems and much more. Founded in 1936, the company has been a pioneer in energy-efficient ventilation, with products widely used across homes, offices, and industrial spaces. Their PoziDry range is specifically designed to reduce condensation and improve air quality.
Elta Fans
Elta Fans is a global leader in air movement technology, focusing on high-performance, durable, and energy-efficient solutions. The company has decades of experience in designing ventilation systems for homes and businesses, with a strong reputation for robust build quality.
| Feature | Vent-Axia PoziDry Pro | Elta PIV ONE Plus+ |
|---|---|---|
| Built In Heater | ✅ Yes | ✅ Yes |
| Low Running Costs | ✅ £2-3 per year | ✅ £2-3 per year |
| Airflow Control | ✅ Adjustable (11-49 L/s) | ✅ Two-speed operation with advanced control |
| Materials | Lightweight plastic | Heavy-duty galvanised steel |
| Noise Reduction | ❌ No acoustic lining | ✅ Built-in sound attenuation |
| Warranty | 5 Years | 5 Years |
Frequently Asked Questions
What is a PIV system, and how does it work?
A Positive Input Ventilation (PIV) system works by drawing in fresh, filtered air from outside and gently distributing it throughout the home. This process reduces moisture levels, preventing condensation and mould buildup.
Why Use a PIV Unit? How Does It Differ from Other Ventilation Systems?
A Positive Input Ventilation (PIV) Unit is a cost-effective way to reduce condensation, damp, and mould by introducing fresh, filtered air into a home. Unlike extractor fans that remove air, a PIV system gently pushes air into the property, improving airflow and lowering humidity levels.
Compared to Mechanical Ventilation with Heat Recovery (MVHR) systems, which extract and recycle heat, PIV units are simpler, more affordable, and easier to install. Unlike trickle vents or passive ventilation, PIV actively moves air, ensuring more consistent moisture control. Ideal for homes prone to condensation, PIV is a low-maintenance and energy-efficient solution for improving indoor air quality.
Will a PIV system make my home colder?
No, PIV systems are designed to introduce fresh air without making your home uncomfortably cold. Both the Vent-Axia PoziDry Pro and Elta PIV ONE Plus+ include built-in heaters to warm incoming air, enhancing comfort during colder periods.
How much does it cost to run a PIV system?
PIV systems are energy-efficient, with both the Vent-Axia PoziDry Pro and Elta PIV ONE Plus+ costing approximately £3 per year.
How long does a PIV system last?
Both the Vent-Axia PoziDry Pro and Elta PIV ONE Plus+ come with a 5-year warranty, but with proper maintenance, they can last 10+ years.
Can I install a PIV system myself, or do I need a professional?
While some homeowners may be able to install a PIV system themselves, it is recommended to hire a professional for the best results. A contractor will ensure proper placement and optimum performance.
What Are the Common Faults with Vent-Axia PIV Units?
Vent-Axia PIV units are reliable, but occasional issues can occur. Cold air may mean the heater needs adjusting, while noise is often due to loose fittings. If the unit runs continuously, the humidity sensor may need recalibrating, and dust buildup can be prevented with regular filter cleaning. For persistent condensation, adjusting airflow settings or improving home ventilation can help. Most issues are easily fixed with proper setup and maintenance.
What are the top 2 PIV brands?
Vent Axia - One of the most well-known ventilation brands, Vent-Axia offers high-quality PIV units with energy-efficient motors, built-in heaters, and smart technology. Their PoziDry Pro range is a popular choice for homeowners dealing with condensation and damp.
Elta Fans - A trusted name, Elta Fans produces robust, high-performance PIV systems like the PIV ONE Plus+. Their units are known for industrial-grade durability, advanced controls, and built-in heating options for year-round comfort.
Need Further Help
If you need additional assistance on which is best for you then feel free to reach out to us at hello@efans.co.uk
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