Hand Dryer Case Study (Junior School) - South Farnborough Junior School, Farnborough

The challenge

The school had conventional hand dryers in place that were about 15 years old. They had a slow dry time of around 30 seconds and a rated power of 2300 kW, which isn’t very energy efficient for a hand dryer. They wanted something more cost effective, as they were renting the machines and it was costing them a lot of money year on year.

 “They are really good, compact, quiet, easy to keep clean and most of all reliable. The children seem to like the fact there is no button to push”

Graeme Davie - Premises Manager

About South Farnborough Junior School

This is a non-denominational Junior School catering for boys and girls from seven to eleven years of age, situated in Farnborough, Hampshire.

It caters for approx. 400 pupils and has a Resourced Provision for Learning Difficulties that provides provision for 20 children.

The solution

Providing a great balance between low noise levels, energy efficiency and quick dry times, this highly robust hand dryer has a motor expectancy that exceeds all others on the market

• Model: Dryflow Classic PLUS MKII
• Dry time range: 15-20 seconds
• Rated power: 1400W
• Guarantee length: 7 years

The results

Estimated annual cost to use old hand dryers: £644*

Estimated annual cost to use new hand dryers: £235.20*

Annual cost savings: £408.80*

Estimated annual old hand dryer carbon production: 2898⁺ Kg/CO₂

Estimated annual new hand dryer carbon production: 1058.40⁺ Kg/CO₂

Annual carbon savings: 1839.60 Kg/CO₂

Estimated return on investment period:

Payback period: approx. 2.4 years

Estimated annual savings using new high-speed hand dryers compared to if paper towels were used**:

• Cost Savings: £4,804.80
• Carbon Savings: 5,241.60kg/CO₂
• Trees Saved: 33.6

_{* Based on 12p per kW/h; + Based on 1kW = 0.54 kg/CO2; **Based on 3 paper towels used per dry, 0.6p per paper towel, 22.5gms/CO2 per dry)}