Pride Hill Dental Surgery, Shrewsbury
NHS modelling study demonstrates 65% air circulation efficiency, eliminating fallow periods and achieving 2-year payback through energy savings
Air Circulation Efficiency
Effective ACH
Pathogen Reduction
Energy Savings Payback
Challenge
Following COVID-19 guidelines, Pride Hill Dental Surgery implemented 30-minute fallow periods after Aerosol Generating Procedures (AGPs), relying on open windows for air circulation. This significantly reduced patient throughput and increased annual energy costs by £3,000 due to prolonged window openings.
Solution
The practice participated in an NHS working group modelling exercise to evaluate recirculating UV-C air sanitisers. Two MT250 wall-mounted units were installed in each treatment room, selected for superior air distribution compared to mobile floor-standing alternatives.
Results
The installation achieved 65% air circulation efficiency at 10 effective ACH—compared to just 7% with 1 ACH from open windows. Fallow periods were completely eliminated, allowing the practice to return to normal operation while reducing energy costs.
Pride Hill Dental Surgery Installations
Treatment Room 1 - Two MT250 units wall-mounted for optimal air distribution
Treatment Room 2 - Wall-mounted configuration provides superior air circulation
NHS Working Group Modelling Study
Study Parameters
Objective: Establish air cleaning effects of recirculating UV-C air sanitisers in dental settings
Devices Evaluated: Both mobile floor-standing and fixed wall-mounted UV-C units
Optimal Configuration: Two MT250 wall-mounted units per treatment room
Key Finding: MidthermUV wall-mounted units provided superior air distribution effects compared to mobile alternatives
Air Circulation Performance
CFD airflow visualization - velocity magnitude showing air circulation patterns
3D room model showing MT250 unit placement for optimal coverage
NHS working group modelling study used Computational Fluid Dynamics (CFD) to evaluate air circulation efficiency
Air circulation efficiency at 10 effective ACH
Air circulation efficiency at 1 ACH (weather dependent)
The MT250 solution provides 9.3× better air circulation efficiency than relying on open windows
Real-World Operational Experience
Fallow Period Elimination
Prior to UV-C installation, 30-minute fallow periods were required after each AGP. These have been completely eliminated, allowing the practice to operate at normal capacity.
"We're back to normal operation" — Practice Partner
Operating Protocol
During AGPs: Both units run at full speed (250m³/h each), delivering 99.99% pathogen reduction (4-log kill effect based on Influenza A)
Between procedures: Units operate at 50% speed for continuous air purification
Pathogen Reduction Efficacy
At full speed during AGPs, the MT250 units deliver a 4-log (99.99%) reduction in airborne pathogens:
Influenza A
LD₉₀ dose: 1.9 mJ/cm²
99.99% reduction achieved
COVID-19 (SARS-CoV-2)
LD₉₀ dose: 0.6 mJ/cm²
Exceeds 99.99% reduction
Compelling Economic Case
Energy Savings
Annual energy cost increase (pre-UV-C)
+£3,000
Due to prolonged window openings
Payback period (energy savings alone)
2 Years
Before considering increased patient throughput
Operational Benefits
Eliminated fallow periods — immediate return to normal patient scheduling
Increased patient throughput — additional revenue from restored capacity
Reduced energy costs — windows can remain closed year-round
Improved patient comfort — consistent temperature control
The economic case for UV-C air sanitisation in dental practices is compelling
Energy savings alone provide a 2-year payback, while increased patient throughput and eliminated fallow periods deliver additional financial benefits that significantly accelerate ROI.
Key Takeaways for Dental Practices
NHS Validated Solution
Modelling study conducted by NHS working group validates effectiveness in dental settings, providing confidence for adoption.
Superior Air Distribution
Wall-mounted MT250 units outperformed mobile alternatives, achieving 65% air circulation efficiency—9.3× better than open windows.
Eliminate Fallow Periods
Complete elimination of 30-minute post-AGP fallow periods allows practices to return to normal patient scheduling and maximize throughput.
Rapid ROI
2-year payback from energy savings alone, with additional revenue from increased patient capacity making the business case even stronger.
Transform Your Dental Practice
Eliminate fallow periods, reduce energy costs, and increase patient throughput with NHS-validated UV-C air purification. Contact us to discuss your practice's specific requirements.