Aqua-Hot Cabin Heaters are designed to provide the added warmth you need in the cold season. Operating off the side-by-side engine coolant system and, with the Aqua-Hot Installation Kit that we recommend as required, it is an easy DIY installation. And if that weren't enough, the fan amp draw is low. Even ATV/UTV batteries can handle the draw.

How to Pick Your Cabin Heater
Heat is measured two ways: The spot temperature you feel in the heat in an enclosed space and the BTU (British Thermal Unit) output of the heater to achieve it.

First determine the volume of your fully enclosed vehicle cabin. Then calculate the difference between the outside temperature and your desired inside temperature.

For example: Assume your fully enclosed passenger compartment has approximately 200 cubic feet (LxWxH= cubic feet) to heat. If the outside temperature is 25ºF and you want an inside temperature of 60ºF you're after a 35ºF temperature rise. Using the formula for heat flow, this means a heater rated around 5,026 Btu/h is appropriate.

Then choose the AH-100 (4,000 Btu/h max; 0 -100 CFM; 12-v DC; 0.5 amps) or AH-200 (6,000 Btu/h max; 0 - 200 CFM; 12-v DC; < 2 amps) to match your heat and electrical system requirements.

Two Models to Choose From
Both with low amp draw and an adjustable, slotted mounting bracket for easy installation and the perfect placement in your vehicle. The Installation Kit – required for side-by-side installation or vehicle that does not have an existing heat circuit – provides everything you need to hook up your new cab heater, including the Diverter Manifold to prevent engine overheating.

Review product details, specs and cost before choosing the right cabin heater for your vehicle.

Installation Kit – Plumbing Made Easy
The Aqua-Hot installation kit includes everything you need to install your new heater, including a patent-pending coolant diverter manifold. The diverter manifold lets you manually balance the proper coolant flow rate between the engine and the cabin heater, so heat gets to the cabin and the engine is protected from overheating if too much coolant flow bypasses the engine. In addition, you can close the cabin heater circuit during the summer months without disconnecting the system.

The diverter also has an assortment of barbed fittings that adapt to coolant hose sizes of 22mm, 3/4" and 1", as well as other components, like a hole saw, clamps and drill bit that make installation straightforward. For kit details click here.

BTU Spoiler Alert — Sorting Out the Truth About BTU
There are two basic truths. BTU ratings are theoretical. BTU delivery is dependent upon the engine's coolant temperature and flow rate.

Most heater ratings are based on automotive engine coolant temperatures, pressure and flow rates that can sometimes reach as high as 275ºF, but typically are about 200ºF to 220ºF. So a 10,000 Btu/h rating is unlikely to achieve 10,000 Btu/h of real-world delivery in a side-by-side.

The average side-by-side engine operates in the 140ºF to 180ºF range and at different pressure and flow rates than automotive systems. Since Aqua-Hot Cabin Heater ratings — AH-100 (Btu/h 4,000) and AH-200 (Btu/h 6,000) — are based on a coolant operating temperature of 170º F and manufacturer specified coolant flow rates, they accurately reflect controlled conditions. Your system may vary depending on your vehicle's coolant system.

Made in USA

Aqua-Hot Cabin Heater Coolant Flow

Installation – Plumbing Made Easy
The Aqua-Hot kit includes a patent pending coolant diverter manifold lets you adjust the coolant flow rate to the cabin heater and even close the circuit during the summer months so you don't have to disconnect the system. It also has an assortment of barbed fittings that adapt to coolant hose sizes of 22mm, 3/4" and 1", as well as other components that make installation straightforward.

Diverter Manifold