LTR 6 / 7
Ventilation Filters for ENERVENT LTR-6, LTR-7, LTR-7 Z, LTR-7 XL
Keep your ENERVENT LTR-6, LTR-7, LTR-7 Z and LTR-7 XL ventilation units running efficiently with high-quality filters that ensure clean indoor air, quiet operation and optimal energy efficiency. In this category you will find original ENERVENT filter sets and high-quality alternative single filters, as well as carbon filters for odour and VOC reduction. All filters are designed for a perfect fit in ENERVENT LTR-6 and LTR-7 series units.
High-Quality Alternative Filters for ENERVENT LTR-6 / LTR-7 Series
Our alternative filters are fully compatible replacements for the original ENERVENT filters and offer excellent filtration performance at attractive prices. Alternative filters are sold per piece (not as a set), so you can freely combine supply and exhaust filters to get exactly the combination you need.
Recommended Filter Combination: F7 + M5 (F7/ePM1 + M5/ePM10)
The recommended filter combination for ENERVENT LTR-6, LTR-7, LTR-7 Z and LTR-7 XL is:
- Supply air: F7 / ePM1
- Exhaust air: M5 / ePM10
This combination offers an ideal balance between indoor air quality, pressure drop and energy consumption. F7 on the supply side efficiently removes fine dust, pollen and many allergens, while M5 on the exhaust side protects the heat exchanger and fan.
You can order individual alternative filters here:
- Supply air F7 filter: ENERVENT LTR-6 / LTR-7 F7 supply filter
- Exhaust air M5 filter: ENERVENT LTR-6 / LTR-7 M5 exhaust filter
Alternative M5 + M5 Filter Combination (M5/ePM10 + M5/ePM10)
- Supply air: M5 / ePM10
- Exhaust air: M5 / ePM10
By using M5 filters on both supply and exhaust, you get a lower pressure drop, which means lower energy consumption and quieter operation. This is suitable for locations with relatively clean outdoor air, where maximum fine filtration is not required. Please note that compared to F7 supply filters, more dust can enter the unit and indoor air.
To create an M5 + M5 combination, simply order two M5 filters: ENERVENT LTR-6 / LTR-7 M5 filter
Alternative F7 + F7 Filter Combination (F7/ePM1 + F7/ePM1)
- Supply air: F7 / ePM1
- Exhaust air: F7 / ePM1
An F7 + F7 combination provides maximum particle filtration on both supply and exhaust, keeping the inside of the unit very clean and helping to protect sensitive users. It is especially recommended for highly polluted areas or allergy sufferers.
To create an F7 + F7 combination, order two F7 filters: ENERVENT LTR-6 / LTR-7 F7 filter
Alternative F7 Carbon Filter for ENERVENT LTR-6 / LTR-7 Series
For users who want to reduce odours and chemical pollutants, we offer an F7 carbon filter for the supply air side. This filter combines high-efficiency particle filtration (F7 / ePM1) with activated carbon for odour and VOC reduction.
- Reduces smells from traffic, cooking, neighbours and industrial areas
- Adsorbs VOCs (volatile organic compounds) from outdoor and indoor sources
- Ideal for city centres, busy roads or odour-sensitive users
Order your F7 carbon supply filter for ENERVENT LTR-6 / LTR-7 here: ENERVENT LTR-6 / LTR-7 F7 carbon filter
Example Alternative Filter Combinations
Because alternative filters are sold per piece, you can configure any combination you need for LTR-6, LTR-7, LTR-7 Z and LTR-7 XL:
- F7 (supply) + M5 (exhaust) – recommended combination
- F7 (supply) + F7 (exhaust)
- M5 (supply) + M5 (exhaust)
- F7 carbon (supply) + M5 (exhaust)
- F7 carbon (supply) + F7 (exhaust)
Original ENERVENT Filter Set for LTR-6 / LTR-7 – Art. 471 011 235
We also supply the original ENERVENT filter set, 100% compatible with ENERVENT LTR-6, LTR-7, LTR-7 Z and LTR-7 XL units. The original set is delivered as a complete set (supply + exhaust) and uses the recommended F7 + M5 combination.
Original F7 + M5 Filter Set – Art. 471 011 235
- Supply air: F7 / ePM1
- Exhaust air: M5 / ePM10
This original ENERVENT filter set provides very good indoor air quality with reasonable energy consumption, while protecting the ventilation unit and duct system from dust. It corresponds to the recommended F7 (supply) + M5 (exhaust) combination.
Order the original ENERVENT filter set here: Original ENERVENT LTR-6 / LTR-7 F7 + M5 filter set (Art. 471011235)
Which ENERVENT LTR-6 / LTR-7 Filter Combination Should I Choose?
- Best overall balance (recommended): F7 (supply) + M5 (exhaust) – available as the original set (Art. 471011235) or using individual alternative F7 and M5 filters.
- Maximum cleanliness / allergy / city centre: F7 + F7 with individual alternative F7 filters, optionally with an F7 carbon filter on the supply side.
- Lowest energy consumption / quietest operation: M5 + M5 using individual alternative M5 filters.
- Odour & VOC problems: F7 carbon filter for supply air, combined with either M5 or F7 on the exhaust side.
FAQ – ENERVENT LTR-6, LTR-7, LTR-7 Z, LTR-7 XL Filters
How often should I change filters in my ENERVENT LTR-6 / LTR-7 unit?
In normal conditions, filters should be replaced every 6–12 months. In dusty or high-pollution areas, or if you have pets or allergies, we recommend checking and possibly replacing them more frequently. Visually inspect the filters at least every 3–4 months.
Are alternative filters safe for my ENERVENT LTR-6 / LTR-7?
Yes, as long as they are high-quality and made to the correct size and filter class (F7 / M5 / ePM classes). Our alternative filters for ENERVENT LTR-6, LTR-7, LTR-7 Z and LTR-7 XL are designed as precise replacements for the originals and match or exceed their filtration performance. Both original sets and alternative single filters are suitable; the key is to use the recommended F7 + M5 combination where possible.
What is the difference between F7 and M5 filters?
F7 (ePM1) filters very fine particles such as fine dust, smoke and many allergens, providing higher indoor air quality. M5 (ePM10) stops coarser dust and larger particles and is sufficient in cleaner environments. For most users, F7 on the supply air side is recommended.
When should I use a carbon filter?
Use an F7 carbon filter on the supply air side if you want to reduce:
- Traffic, industrial or city odours
- Cooking smells and tobacco smoke entering from outside
- VOCs (volatile organic compounds) from outdoor air or nearby sources
Do dirty filters increase energy consumption?
Yes. Clogged or very dirty filters cause higher pressure drop, so the fans must work harder and consume more electricity. Regular filter replacement keeps your ENERVENT LTR-6, LTR-7, LTR-7 Z or LTR-7 XL efficient, quiet and reliable, while maintaining high indoor air quality.
