Greenvision Energy

Positive Input Ventilation

Positive Input Ventilation

A ventilation system that improve indoor air quality & eliminates condensation. Positive Input Ventilation (PIV) systems create fresh and healthy living environments by supplying fresh, filtered air into a property at a continuous rate throughout a property. There are healthy benefits for asthma and respiratory sufferers.

Why improve your ventilation?

What is PIV Ventilation?
It is a concept to deliver fresh filtered air into a property at a continuous rate. By drawing in fresh, filtered and clean air from outside, the units gently ventilate the home from a central position on a landing in a house or the central hallway in a flat or bungalow.

Moisture-laden air is diluted, displaced and replaced to control humidity levels between 45-60%*. This signifcantly reduces or eliminates surface condensation, the main cause for mould growth. With lower humidity levels, dust mite populations are also substantially reduced to provide a significant improvement in the health of asthma sufferers and general indoor air quality.

Why ventilate your home?
The effect of not having good quality air in the home is dramatic. The average person spends 90% of their time indoors and 70% of this time is spent in their own home. The indoor living environment is therefore crucial to the health of the occupants.

Modern housing has become increasingly energy conscious. In order to save energy we have blocked chimneys, insulated, draught proofed, double glazed etc and progressively sealed our homes from an essential supply of fresh air. This may save energy and make our homes more comfortable, however we pay the penalty by living in and breathing in this stale, contaminated, humid air for 70% of the time.

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Ventilation

Positive Air Flow Illustration

We inhale and exhale approximately 20,000 times a day. By sealing up our homes we are breathing in a viral soup of many contaminants. PIV insulation deliveries fresh filtered air 24 hours day.

Whole House Ventilation System

Waking up to streaming windows? damp and condensation is a real issue in British homes. The PIV unit circulates fresh filtered air into your property encouraging movement of air and reducing excess moisture which can cause condensation and damp.

Condensation on a window

50% of all illnesses are either caused or aggravated by poor indoor air quality. PIV insulation lowers humidity levels, and reduces dust mites, which can provide a significant improvement in reducing one of the major triggers for asthma sufferers.

Whole House Ventilation System

More Reasons To Buy PIV

Frequently Asked Questions About PIV

Yes. There will be gaps around the edges of the doors, which will enable the fresh air to flow throughout the property.

The air being brought into the property does come from outside, however warm air lost at ceiling level will be regained via the diffuser. You may notice the air movement, but this is very gentle.

No, our range of Positive Input Ventilation PIV run ‘whisper-quiet’.

Our range of positive Input Ventilation PIV requires very little attention. Filters are replaced every five years. For optimum performance, the filter should be kept clean and clear. When the filter becomes dirty, the unit does not input as much air into the home, creating the opportunity for condensation and musty smells to become evident. This will be a signal that you need to have the filter checked and replaced/cleaned as necessary

7 year warranty: 1 year parts and labour, remaining 6 years parts only (UK and Ireland only)

Damp and condensation cost social housing providers £1,000s to put right. We experts in providing permanent solutions to cure condensation and mould problems in the social housing sector. We work with registered to supply the right solution for refurbishment programmes, responsive repairs work and development projects.

What people think

Excellent
Based on 33 reviews
Isobel Gleave
Isobel Gleave
05/03/2023
I'm very pleased that I went ahead and replaced my old storage heaters with the new Dimplex ones. The whole process went smoothly and efficiently and Greenvision were very helpful at all stages and didn't rush me. Apart from working better than the old ones they also look smart, as does the new bedroom panel heaters. The installers did a brilliant job and didn't leave a trace.
Gemma Rogers
Gemma Rogers
05/03/2023
Quality service for installation of a new Dimplex Quantum storage heater, Rointe electric towel rail, updated fuse box and all associated. The service provided by Greenvision went beyond all expectations. Everyone was extremely helpful and friendly. Stuart and Paul provided professional advice based on what would be best for me. The virtual survey option was ideal, so we could discuss options and get a quote straight away, which meant from contacting Greenvision to installation was only a couple of weeks! Amanda was great in keeping me up to date about the installation and arrangements. On the day, Dan arrived exactly when expected and fitted everything perfectly, it's made such a difference. Thank you to everyone at Greenvision. Very impressed and wouldn't hesitate to recommend!
Peter Graystone
Peter Graystone
27/02/2023
I found Greenvision very pleasant to work with. The explanation of the product, and the survey to check it was suitable for my home were both excellent. The engineer was courteous and efficient, although I would have loved it if he had vacuumed before he left. I'm very pleased on the whole.
D A
D A
18/02/2023
Purchase and installation of Dimplex Quantum Storage Heaters. Very professional from start to finish. In contact throughout. Answered questions and were friendly and helpful. Fitters were very efficient and even brought a hoover to clear up afterwards! They explained everything regarding usage. Very polite and professional from start to finish. Would recommend.
ann munro
ann munro
18/01/2023
I instigated my business with Greenvision 6 weeks or so ago. The staff at Greenvision were informative, considerate of my needs and quick to answer any queries. Adjustments to my advantage were made after a survey which have proved to be most adequate. The installation occurred on 16th. January. The engineers were on time, efficient and considerate, clearing up and tidying up as they proceeded. They took time to make sure I understood the basics of operating my heaters. I will certainly recommend Greenvision where and when I can. So quick.
Sarah Moyer
Sarah Moyer
12/01/2023
I used Greenvision for purchase and installation of 2 electrical high heat retention heaters for use with Economy 7. Everyone at Greenvision was friendly and helpful. Although based in Nottingham they facilitated installers for me in London. The whole process was seamless, quick and efficient. I would certainly recommend this company.
Carol G
Carol G
23/11/2022
We purchased new Dimplex storage heaters through Greenvision. I was totally impressed by their level of knowledge, advice, customer service and ability to organise an efficient installation of these products at our property in North Wales. Highly recommended!
Lucy Reynolds
Lucy Reynolds
19/11/2022
Very pleased with the installation of a Quantum Dimplex storage heater. Clearly explained at all stages and electrician who installed it was excellent.
Ray W
Ray W
08/11/2022
6 Dimplex Quantum storage heaters installed to replace old heaters and associated modifications carried out to wiring in meter cupboard. Friendly helpful installers and very professional job. Highly recommended.
Brian Lomas
Brian Lomas
24/10/2022
Supplied and fitted 3 Dimplex Quantum storage heaters. Used Greenvision because other residents in our retirement flats recommended them from their experience. They were right to do so as our experience was the same. From start to finish our experience was seamless and efficient ,polite, friendly are words that come to mind. The team that arrived with us on installation day was Nathan/Paul and Luker. All three were cleanly dressed, polite and friendly but courteous. They were very competent indeed and represented an excellent image of the Company. J B and L Lomas SANDBACH

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