Need a Reliable Replacement Heater for Your Pool or Spa?
Perfect for replacing outdated, inefficient, or failed electric heaters — Coates delivers dependable, long-lasting heating for commercial and residential pools.
Why Choose a Coates Heater?
Designed for compatibility with many existing electric heater configurations, Coates units often simplify the upgrade process, making it quicker and less costly to replace your old, inefficient system
Offering both single-phase and three-phase models, we ensure a perfect match for your current electrical infrastructure, whether for a standard residential pool or a high-demand commercial facility.
Constructed with heavy-duty stainless steel components, these heaters are built to withstand corrosive environments and continuous use, making them a preferred choice for commercial pools, resort spas, and apartment complexes.
Not Sure Which Model Replaces Your Existing Heater?
Electrical Setup
Confirm whether your current heater uses single-phase power for smaller installations or three-phase power for larger commercial systems.
Kilowatt Rating
Identify your existing heater’s kW rating and use a simple kW-to-pool-size chart to choose an equivalent or upgraded model.
Plumbing Size & Flow Rate
Check your plumbing size and flow rate to ensure the new heater matches your system’s required ranges.
Explore Single-Phase Heaters
Explore Three-Phase Heaters
Request a Quote
Tell us a little about your pool setup, and we’ll match you with the right Coates heater and provide a detailed quote.
Coates heaters are a made-to-order product. When you order your Coates heater from EZ Pool & Spa Supply, we'll confirm a lead time with the manufacturer which typically can range up to 6-10 weeks.
EZ Pool & Spa Supply cannot fulfill orders for Coates heaters in the following states: Washington, Oregon, Idaho, California. Any orders placed within these states will be canceled and refunded.
Coates Spa Heaters
If you’re looking to heat your spa or hot tub efficiently and reliably, Coates offers a range of electric heaters that combine compact design with durable construction.
- Coates ILS Series 1.5 kW – Compact and reliable, perfect for smaller spas, with durable stainless-steel construction and built-in safety features.
- Coates ILS Series 5.5 kW – Powerful, efficient heating for mid-sized spas, designed for long-lasting performance and precise temperature control.
- Coates ST Series 8 kW – High-capacity heater for larger or demanding spas, featuring advanced safety controls and robust, corrosion-resistant design.
Need a Replacement Part for Your Heater?
Browse our full selection of genuine Coates heater parts to repair or upgrade your existing unit quickly and reliably.
Find the Right Heater For You
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Fast, Flexible Financing for Your Business
EZ Pool & Spa Supply partners with Credit Key to give you accessible, flexible payment options to manage cash flow.
Credit Lines can exceed $50,000 with additional documentation. Interest-free payment periods can increase beyond 30 days during promotional periods. Subject to credit approval.
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