Case Study 1: Tackling Mould & Humidity in a Private Rental Property (Healthy Home Pro)
Client Type: Private landlord with a 3-bedroom semi-detached house in the Midlands (built 1980s)
Challenge: Tenant complaints of recurring black mould in bedrooms and bathroom, high humidity (often >70%), frequent condensation on windows, and respiratory issues for a family with young children. Property had poor ventilation and no recent upgrades.
Our Approach:
We conducted a full Healthy Home Pro assessment: multi-room monitoring of relative humidity, temperature, CO₂, particulates, and mould spore presence over 7 days.
Results & Improvements:
- Baseline: Average RH 68–75% (peak 82% at night), visible mould growth, CO₂ spikes >1,200 ppm during occupancy.
- Recommendations: Installed positive input ventilation (PIV) unit, added extractor fan in bathroom, advised on heating patterns and anti-condensation paint.
- Post-intervention re-test (3 months later): RH stabilised at 45–55%, no new mould growth, CO₂ reduced to <800 ppm, particulate levels dropped 60%. Tenant reported better sleep and fewer allergy symptoms.
Outcome:
Full Healthy Home Pro certification issued. Landlord avoided potential council enforcement, tenant satisfaction increased, and property re-let faster at higher rent. "The certificate gives me real peace of mind and makes viewings easier." – Landlord
Case Study 2: Improving Air Quality in a Small Independent Cafe (Healthy Indoor Air Certificate)
Client Type: Independent cafe/bar in a busy town centre (single operation, ~50 seats)
Challenge: Frequent customer comments about "stuffiness," staff fatigue during peak hours, high CO₂ from occupancy and cooking, occasional odours.
Our Approach:
Free introductory test (as part of your promo) followed by full 3-day monitoring of CO₂, particulates (PM2.5), VOCs, humidity, and temperature.
Results & Improvements:
- Baseline: CO₂ averaged 1,400 ppm (peaks >2,000 ppm), PM2.5 elevated from kitchen fumes, humidity 65–70%.
- Recommendations: Added mechanical extractors over cooking areas, improved fresh air intake, adjusted HVAC balancing.
- Post-intervention: CO₂ reduced to <800 ppm, particulates dropped 70%, humidity stabilised at 50–55%. Customer feedback improved ("feels so much fresher").
Outcome:
Healthy Indoor Air Certificate awarded. Cafe displayed the framed certificate at the counter — led to positive Google/TripAdvisor reviews mentioning "clean, fresh air." Business reported 15% increase in repeat customers.
Case Study 3: Enhancing Workplace Wellbeing in a Small Office (Healthy Workspace Certificate)
Client Type: 10-person creative agency in a converted warehouse office (South East England)
Challenge: Staff complaints of headaches, poor concentration, and dry eyes; high CO₂ during meetings, dust from open-plan layout.
Our Approach:
Comprehensive monitoring over 5 days, focusing on CO₂, PM2.5/PM10, VOCs, humidity, and temperature.
Results & Improvements:
- Baseline: CO₂ averaged 1,200 ppm (peaks >1,800 ppm in meeting rooms), PM2.5 occasionally elevated from traffic near windows.
- Recommendations: Installed demand-controlled ventilation, added air purifiers in high-traffic areas, introduced plants and better cleaning schedule.
- Post-intervention: CO₂ stabilised at <700 ppm, particulates reduced 65%, humidity 45–55%. Staff reported improved focus and fewer sick days.
Outcome:
Healthy Workspace Certificate issued and displayed in reception. Agency used it in recruitment ads ("Certified healthy air"). Productivity metrics showed improvement, with fewer complaints.
Case Study 4: Protecting a Small Data Centre Server Room (Data Centre Dust Testing)
Client Type: SME IT provider with a 20-rack server room in the North West
Challenge: Intermittent overheating alarms, reduced cooling efficiency, visible dust on racks — risk of hardware failure.
Our Approach:
ISO 14644-1 compliant airborne particulate testing (Class 8 target), multi-point sampling for ≥0.5 µm particles, plus temperature/humidity logging.
Results & Improvements:
- Baseline: Particle counts exceeded Class 8 limits (high PM10 from poor filtration), temperature spikes due to clogged intakes.
- Recommendations: Upgraded HEPA filters, increased positive pressure, scheduled quarterly cleaning.
- Post-intervention: Particle counts reduced 80% (now within Class 8), cooling efficiency improved 25%, no alarms for 6 months.
Outcome:
Detailed compliance report issued. Client avoided £10k+ in potential downtime costs. "The testing gave us peace of mind and extended our hardware life." – IT Manager
Case Study 5: Holiday Let Boost in the Cotswolds (Healthy Stay Certificate)
Client Type: Independent Airbnb owner with a 2-bedroom cottage
Challenge: Mixed reviews mentioning "musty smell" and "stuffy bedrooms," especially in winter; high humidity from poor ventilation.
Our Approach:
Seasonal testing of humidity, CO₂, particulates, and VOCs over a weekend occupancy simulation.
Results & Improvements:
- Baseline: RH 70–80% (peak condensation), CO₂ >1,100 ppm overnight.
- Recommendations: Added PIV unit, dehumidifier, and guest ventilation guide.
- Post-intervention: RH 45–55%, CO₂ <700 ppm, no musty complaints.
Outcome:
Healthy Stay Certificate displayed on listing. Reviews improved ("fresh and airy!"), bookings increased 20%, higher nightly rates.
