MARS TUB WITH FREE HEAT PUMP FOR £3,199
UP TO 35% OFF HOT TUBS
AUTO CHEMICAL DOSING SYSTEM 20% OFF

Automatic Chemical Dosing for Holiday Let Tubs

In 2025 Hydrospas has launched its first Auto-Dosing System for the UK holiday parks. The Hydrospas® chemical dosing unit is designed for the hot tub B2B market, supporting holiday parks and leisure facilities. This product significantly reduces staff and labour costs for the holiday park industry.

The Auto-Dosing System pays for itself in 12 months

Benefits for the holiday park industry

Staff Savings

Designed to cut costs and simplify hot tub management, this system reduces twice-daily manual testing for HSG282 compliance.

By automating monitoring and dosing, it saves time, reduces errors, and ensures consistent water quality – freeing staff to focus on guest experience.

Guarantees Sanitary Water

Unlike inaccurate manual dosing, this automated system delivers 24/7 precision.
Trial as seen below show manual pH dosing was non-compliant 654 of 658 times, causing nearly 95% chlorine non-compliance.

Auto dosing ensures accuracy, reduces waste, and lowers costs.

Complies with HSG282

HSG282 requires parks to disinfect water, maintain chlorine / bromine and pH levels, record safety compliance, and conduct regular chemical and bacterial testing.

The Hydrospas® Auto Dosing System meets all these requirements automatically, with no manual input.

24/7 Online Portal & Records

Our remote, subscription-free portal provides:
• Full sanitation records for unlimited parks and tubs
Remote pH and chlorine / bromine monitoring via computer or smart device
Five years of historical records for verification
Alerts and alarms 
No guest disturbance for manual testing

Testing: Manual vs Automatic Dosing

Testing Period: 3 – 10 August, 2025

PH Testing

Hydrospas Auto-Dosing System

HSG282 Compliant between 7 - 7.6

Chlorine (ORP) Testing

Hydrospas Auto-Dosing System

HSG282 Compliant between 760 - 825

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HSG282 Compliance Information

HSG282 is the UK Health & Safety Executive’s guidance for controlling the risk of Legionella and other infectious agents in hot tubs used in holiday lets and similar business settings. If you provide a spa for paying guests, compliance with this standard is strongly recommended.

Our Holiday Let range has been designed with HSG282 in mind, helping operators meet the key requirements:

  • Automatic chemical dosing (chlorine/bromine) – no floating dispensers.
  • Ozone/UV secondary sanitisation for added protection.
  • Hydraulic design for rapid water turnover (approx. 15 minutes).
  • No air blowers, reducing aerosol risk.
  • Continuous filtration and heating via automated cycles.
  • Easy water testing with clear access points for twice-daily checks.
  • Risk assessment templates and logbooks provided to support record keeping.
Important to Note

Actual compliance depends not only on spa design, but also on how the spa is operated and maintained:

  • Carrying out twice-daily water tests (disinfectant & pH).
  • Weekly (or per changeover) water changes.
  • Keeping accurate maintenance and testing records.
  • Following safe bather load limits and displaying user rules.

Our HSG282-ready spas make it easier to stay compliant, safe, and audit-prepared in holiday let environments.