Product Information
Crankcase heater
Please note: Hydrowest Products Ltd. is a wholesale distributor and sells exclusively to licensed contractors and trade professionals.
Fast Shipping
In-stock orders ship within 1 business day to anywhere in Canada.
Code-Compliant
All products meet Canadian HVAC and gas code standards.
Wholesale Pricing
Trade pricing for licensed contractors. 40+ years in the industry.
Bosch crankcase heater provides continuous low-level warming of the compressor during off cycles to prevent refrigerant migration, reduce noisy or damaging cold starts, and protect compressor operation. (bosch-homecomfort.com) It is supplied as an accessory for Bosch heat‑pump and split‑system outdoor units and is intended for installers and service technicians to improve start reliability. (bosch-homecomfort.com) Exact part number 8733953169 was not located on Bosch North America sites; this description is based on Bosch technical manuals and product data for crankcase heaters.
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