💨 Koller Air Blower H-3602-2 – 640W Heated Bath Blower

Warm Air, Quiet Comfort – The Perfect Spa Upgrade 🫧

📝 Product Overview

The Koller H-3602-2 Heated Air Blower (640W) transforms your spa or whirlpool experience by combining powerful airflow with integrated air heating technology. Unlike standard non-heated blowers that can chill your bathwater and leave you feeling cold, this unit features a built-in 200W heater that pre-warms the air before it enters your bath – maintaining water temperature longer and delivering a noticeably more comfortable, luxurious soak.

Manufactured by Rudolf Koller, a German company with over four decades of pioneering whirlpool technology, the H-3602-2 delivers the quality and reliability you’d expect from European engineering. The unique vertical body design maximises installation flexibility, fitting into tight spaces where conventional horizontal blowers simply won’t work.

Controlled electronically via your spa’s control box as standard, this versatile blower can also be upgraded with an optional 3-speed pneumatic control box for variable airflow intensity. Whether you’re replacing an ageing blower or upgrading to heated air technology for the first time, the H-3602-2 offers the perfect balance of performance, comfort, and installation flexibility for discerning spa owners.

✨ Key Features

✅ 640W Total Power Output – Combines a powerful 440W motor with 200W heater for efficient, heated airflow performance

✅ 200W Integrated Air Heater – Pre-heats the air before it enters your bath, preventing rapid water cooling and eliminating cold air on your body

✅ Electronic Control System – Connects directly to your spa or bath control box for seamless topside operation

✅ 3-Speed Upgrade Compatible – Can be connected to an optional pneumatic 3-speed control box for variable airflow intensity via air button

✅ Compact Vertical Body Design – Space-saving configuration fits into tight installation spaces where standard blowers cannot reach

✅ Flexible Mounting Orientation – Install horizontally or vertically to suit your specific installation requirements

✅ Quiet Operation Engineering – Designed for low-noise performance so your relaxation isn’t disturbed by motor sounds

✅ Universal 1½” Connection – Standard buttressed fitting ensures compatibility with a wide range of union options and existing pipework

✅ IP45 Protection Rating – Suitable for humid bathroom environments with protection against water jets and dust ingress

✅ 2m Bare End Cable – Ready for direct connection to spa control boxes, making replacement installations straightforward

⚙️ Technical Specifications

Specification	Details
Model	Blower Series X602
MPN	H-3602-2
Old Part No.	H3602-2
Motor Power	440W
Heater Power	200W
Total Power	640W
Speed	1 Speed (standard)
Variable Speed	Yes (with optional control box)
Heated	Yes (200W integrated heater)
Connection Size	1.5″ (1½” buttressed)
Voltage/Frequency	220-240V / 50Hz
Protection Rating	IP45
Cable Length	2m
Cord Length	1m (supplied bare end)
Plug Type	Bare End
Mounting	Vertical or Horizontal
Body Design	Compact Vertical
Rated Use	Domestic Use

🏠 Real World Examples & Applications

🛁 Whirlpool Bath Luxury Upgrade

Transform your standard whirlpool bath into a truly luxurious experience. The H-3602-2’s heated air technology means no more cold bubbles shocking your skin during relaxing evening soaks. The warm airflow maintains your bathwater temperature longer, extending your enjoyment without needing to top up with hot water. Perfect for those who find non-heated blowers leave them feeling chilled.

♨️ Spa System Enhancement

For existing spa owners looking to upgrade from a non-heated blower, the H-3602-2 delivers immediate comfort improvements. The bare-end cable connects directly to your current control box, and the standard 1½” connection fits most existing pipework. You’ll notice the difference from your very first soak – warm, comfortable bubbles rather than cooling air.

💆 Hydrotherapy Applications

In therapeutic settings where maintaining water temperature is essential for effective treatment, the H-3602-2 excels. The pre-heated air ensures consistent comfort during longer hydrotherapy sessions, making it ideal for those using their spa for muscle relaxation, joint therapy, or general wellness purposes where prolonged immersion is beneficial.

🔄 Heated Blower Replacement

When replacing a failed heated blower, the H-3602-2 offers a reliable, like-for-like solution. The flexible mounting options (vertical or horizontal) accommodate various installation configurations, while the compact vertical body design often fits where the original unit sat. German Koller engineering ensures you’re investing in a durable long-term replacement.

🏢 Guest Accommodation & Holiday Lets

For B&Bs, holiday cottages, or rental properties with hot tub facilities, the heated blower provides that premium touch guests appreciate. The quiet operation won’t disturb neighbours, while the warm air technology delivers the comfort that earns positive reviews and repeat bookings.

🔧 Installation Considerations

⚠️ Professional Installation Required – This blower must be installed by a competent tradesperson or qualified spa technician to ensure safe operation and warranty validity.

Electrical Requirements

• Total Power: 640W (440W motor + 200W heater)
• Voltage: 220-240V AC
• Frequency: 50Hz
• Connection: Bare end cable (2m length) for direct wiring to control box
• All electrical work must comply with current UK wiring regulations (BS 7671)
• Ensure adequate circuit capacity for the combined motor and heater load

Mounting Options

• Vertical mounting: Primary orientation utilising the compact body design
• Horizontal mounting: Alternative configuration using the same mounting system
• Secure fixing required to prevent vibration and ensure quiet operation
• Ensure the unit is positioned where heater operation won’t cause issues with surrounding materials

Connection Details

• Outlet size: 1½” (38mm) buttressed connection
• Compatible with standard spa and whirlpool union fittings
• Ensure airtight connections for optimal airflow and heater efficiency

Control Options

• Standard: Electronic control via spa control box (topside operation)
• Optional upgrade: 3-speed pneumatic control box (sold separately) for variable intensity via air button

Ventilation & Safety

• Ensure adequate airflow around the blower motor for cooling
• The heater element requires appropriate clearance from combustible materials
• Do not enclose in completely sealed spaces
• IP45 rating provides splash protection – unit should not be submerged
• Maintain access for future servicing or replacement

Important Notes

• Electrical items are non-returnable once opened or installed
• Installation-related damages are not covered under warranty
• Faulty items under warranty must be returned for inspection

🥇 Why Choose the Koller H-3602-2 Heated Air Blower

✅ Heated Air Technology – The 200W integrated heater pre-warms airflow, eliminating cold bubbles and maintaining bath temperature longer than non-heated alternatives

✅ German Engineering Excellence – Rudolf Koller brings over 40 years of whirlpool technology expertise, ensuring premium quality and long-lasting reliability

✅ Dual Control Flexibility – Works with electronic control boxes as standard, with optional upgrade to 3-speed pneumatic control for variable intensity

✅ Space-Saving Vertical Design – Compact body fits into tight installation spaces where conventional horizontal blowers cannot reach

✅ Whisper-Quiet Performance – Engineered for low-noise operation so your relaxation isn’t interrupted by motor sounds

✅ Universal Compatibility – Standard 1½” buttressed connection and bare-end cable simplify replacement and new installations alike

🛒 Why Buy from Parts4tubs?

✅ UK-based specialist supplier with genuine expertise in spa and hot tub components

✅ Expert technical advice available – real people who understand spa systems

✅ Fast UK delivery to minimise your spa downtime

✅ Competitive pricing on genuine Koller products

✅ Authentic manufacturer parts – no inferior imitations

✅ Dedicated customer support before, during, and after purchase

✅ Secure online ordering with full payment protection

✅ Clear warranty terms and returns policy

🌟 Summary

The Koller H-3602-2 640W Heated Air Blower delivers the ultimate spa upgrade – powerful airflow combined with 200W air heating technology that keeps your bathwater warmer and your body comfortable. The compact vertical design solves space challenges, while electronic control with optional 3-speed upgrade provides complete flexibility. German Koller engineering ensures quiet, reliable performance for years of luxurious bathing. Experience the difference heated air makes – order your H-3602-2 today.