- HEP Heat and Air
- Mechanical Ventilation

Mechanical Ventilation
Mechanical Ventilation | Ventilation and Air Quality | Heating and Air Conditioning | Lancing
Discover how HEP brings fresh thinking to Lancing homes and businesses with tailored mechanical ventilation, heating and air-conditioning solutions that keep every room at its best. From whisper-quiet MVHR units that recover heat without wasting energy to smart AC systems that learn your schedule, we design, install and maintain equipment that balances temperature, humidity and airflow for year-round comfort. Our engineers live locally, arrive promptly and explain every option in plain English, so you always feel in control of your environment and your budget.
Because healthy buildings start with clean air, we focus on ventilation and air quality that meets the latest Part F regulations while cutting running costs. Advanced filtration captures pollen, dust and pollutants; intelligent sensors boost extraction only when needed; and regular planned maintenance keeps efficiency high and carbon footprints low. Whether you’re modernising a seaside cottage or managing a retail park, HEP is ready to create the perfect indoor climate—so you can breathe easy in Lancing, today and tomorrow.
FAQs
Why is mechanical ventilation crucial for homes and businesses in Lancing?
Lancing’s coastal location means higher outdoor humidity and airborne salt, which can encourage condensation, mould growth and corrosion inside buildings. Modern airtight construction also traps indoor pollutants such as VOCs, cooking fumes and allergens. A correctly sized mechanical ventilation system continuously replaces stale, moisture-laden air with filtered fresh air, preventing damp, protecting the building fabric, and improving occupants’ health and comfort.
What types of ventilation systems do you install and how do they work?
We design and install four main system types: • MVHR (Mechanical Ventilation with Heat Recovery) – Extracts stale air while simultaneously supplying fresh air through a heat exchanger that recovers up to 90 % of the heat that would otherwise be lost. • MEV (Mechanical Extract Ventilation) – A central fan continuously extracts air from wet rooms; replacement air enters through window vents or wall inlets. • dMEV (Decentralised MEV) – Individual low-energy fans in each wet room, ideal for retrofits. • PIV (Positive Input Ventilation) – A single loft-mounted unit gently pushes filtered air into the property, diluting contaminants. Our engineers evaluate building size, occupancy, energy goals and budget to recommend the best option.
How often should filters and ductwork be serviced?
For most domestic systems we recommend: • Filters – Inspect every 6 months and replace every 12 months (more frequently if you have pets, live near busy roads, or suffer from allergies). • Heat-exchanger cores – Wipe down annually to maintain efficiency. • Ductwork – Professional inspection and hygiene clean every 3–5 years, or sooner if you notice odours or reduced airflow. Regular maintenance ensures good air quality, keeps energy use low, and preserves manufacturer warranties.
Will installing a mechanical ventilation system increase my energy bills?
A well-designed system typically lowers overall energy costs. Balanced MVHR units recover otherwise-lost heat in winter and reduce the need for air-conditioning in summer. Low-power EC (electronically commutated) fans use as little as 5–20 W on background speed. By controlling indoor humidity, the system also protects insulation and heating equipment, avoiding costly repairs. Any electricity used by the fans is usually outweighed by the heating or cooling savings achieved.
Are your installations compliant with current UK Building Regulations and local authority requirements?
Yes. All our systems are designed to meet or exceed Part F (Ventilation) and Part L (Conservation of Fuel and Power) of the Building Regulations. We supply full design calculations, airflow testing, and commissioning certificates for SAP or EPC assessments. For commercial projects, we follow CIBSE and BESA guidelines and liaise with Adur & Worthing Council building control to ensure seamless approvals.
How does the coastal environment in Lancing affect HVAC equipment, and what can be done to protect it?
Salt-laden sea air accelerates corrosion of metal components, particularly outdoor condensers and roof cowls. To extend service life we specify: • Marine-grade epoxy or polyester powder-coated casings. • Stainless-steel fixings, brackets and condensate trays. • Hydrophilic, anti-corrosion coil coatings on outdoor units. • Regular gentle hose-down of external equipment (every 3–4 months). • Protective louvres and elevated mounting to keep units clear of blown sand and standing water. These measures minimise salt damage, ensuring reliable operation and safeguarding your investment.