Straight Answers

A whole-house system uses a central unit installed in your loft or utility room, with ductwork connecting to every room. It runs continuously and silently, treating the entire property automatically — with no intervention from you. A portable unit only dehumidifies one room at a time, requires regular emptying, and does nothing to address the root cause of your home's moisture problem. It's the difference between a sticking plaster and a cure.

Yes — Dryzen systems are suitable for virtually all residential property types, including Victorian terrace houses, semi-detached and detached properties, bungalows, flats (where loft access is available or a unit can be wall-mounted), and new builds. Our survey stage assesses your specific property to confirm suitability and design the right solution.

No — they address different problems. Traditional damp-proofing treats rising damp from ground moisture penetrating walls. The Dryzen system addresses condensation damp — the far more common UK problem caused by water vapour produced inside the home that has nowhere to go. If your windows are steaming up, you have black mould growing in corners, or rooms feel perpetually damp and musty, condensation damp is almost certainly the cause, and Dryzen is the solution.

The dehumidifier removes excess moisture from the air already inside your home. The fresh air system replaces stale indoor air with clean, filtered outdoor air. They work together: the dehumidifier controls humidity levels, while the fresh air system continuously replenishes oxygen, removes CO₂ and allergens, and prevents the stuffiness associated with sealed modern homes. Most Dryzen installations combine both for a complete solution.

Extremely quiet. Our central units operate at between 25 and 38 dB(A) — quieter than a library and barely audible from a normal distance. The ductwork delivers air at low velocity, so you won't hear it through vents. The vast majority of our customers tell us they forget the system is running entirely.

For a typical three-bedroom house, installation takes one to two days. Larger properties or those requiring more complex ductwork may take slightly longer — we'll give you a precise timeframe when we provide your quotation. Our team works efficiently and cleans up thoroughly before they leave.

Minimal. The main unit is installed in your loft or utility room, and ducting is routed through the loft space where possible — keeping disruption to your living areas to a minimum. Small vent grilles are fitted in ceilings or walls in each room. We protect all floors and furniture during the work and leave your home clean and tidy.

We do ask that someone is present at the start of each day to let our engineers in and at the end of the final day for the handover and demonstration. You don't need to be home throughout the day itself — our team will get on with the work independently.

It depends on the flat. For properties with loft access, installation is often straightforward. For flats without loft access, we can often install a wall-mounted unit with smaller-bore ducting, or a Positive Input Ventilation (PIV) unit in a cupboard. We'll assess your property at the survey stage and recommend the best approach.

Our systems are highly energy efficient, consuming from as little as 180W — comparable to a single light bulb. In practice, running costs are typically between £15 and £35 per month, depending on your home's size and existing humidity levels. Many customers find that the improved heating efficiency of a drier home partially offsets this cost — damp air requires significantly more energy to heat than dry air.

Potentially, yes. Damp air holds more heat and requires more energy to warm up than dry air. By maintaining optimal indoor humidity, some customers see a measurable reduction in heating costs — particularly in older properties with high moisture levels. Our MVHR (heat recovery ventilation) option also recaptures up to 90% of the heat from outgoing stale air, further reducing energy loss.

Yes, significantly. Dust mites — a major allergen trigger — thrive in humidity above 50%. By keeping indoor humidity below this threshold, Dryzen dramatically reduces dust mite populations. Our fresh air component also uses HEPA H13 filters that remove 99.95% of airborne particles including pollen, pet dander, and mould spores. Many customers with asthma, hay fever, and eczema report meaningful improvements within weeks.

Yes. Black mould (Cladosporium and other species) cannot grow in humidity consistently below 60%. By maintaining your home at 40–55% relative humidity, the Dryzen system removes the conditions mould needs to survive. You should clean existing mould with an appropriate product before or shortly after installation — and then it should not return.

An annual service visit is all that's required. During this visit, our engineer replaces filters, cleans the unit, checks all sensors and components, and produces a health report. We'll remind you when it's due and book it at your convenience. Between services, the system is designed to run without any intervention on your part.

All Dryzen systems come with a comprehensive 10-year warranty covering both parts and labour. This means that if any component fails due to a manufacturing defect or workmanship issue within ten years of installation, we'll repair or replace it at no cost to you. The warranty is valid as long as you maintain an active Dryzen service plan.

With regular annual servicing, a Dryzen system is designed to last 20 years or more. The central unit has no consumable parts other than filters, and the ducting and vents have an indefinite lifespan. We design our systems with longevity in mind — and we'll be there to support you for the duration.

Absolutely. A Dryzen system is an excellent investment for landlords. Under Awaab's Law and the Renters Reform Act, landlords in England have increasing obligations to address damp and mould in rental properties promptly. A Dryzen installation provides a permanent, documented solution that demonstrates compliance — and eliminates tenant complaints about condensation and mould for the lifetime of the system.

We currently install and service systems across England and Wales. Contact us with your postcode and we'll confirm coverage and typical lead times in your area. We're actively expanding our network of installation engineers — if we can't reach you directly right now, we can often refer you to a trained partner installer.

Simply book a free home survey via our contact page, or call us on 07449 303889. A Dryzen specialist will visit your property, assess your needs, and design a system for you — completely free of charge and with no obligation to proceed. If you'd like to go ahead, we'll provide a transparent, fixed-price quote within five working days of the survey.