Summit Racing® Automotive Heaters SUM-991102-1

I have not with this but from past experience run hot wire to post. Post on battery not doubled and ground to frame . Leave turned off when cranking and a few minutes after to prevent getting 24 volts

RICHARD H from TN answered on August 04, 2017

This product is for a 12V system. If you are trying to adapt the heater to a 24V system, you will need to drop the voltage.

CY from AZ answered on August 16, 2017

I looked at mine, the motor is rated at 12 vdc and that's all it states. I'd be hesitant to double the rated voltage. As a rule of thumb you can only go +/- 10% of rated voltage on a motor.

KENNETH from PA answered on August 03, 2017

I insalled mine to a 12v system,works great.

GARY from UT answered on July 31, 2017

No. You can't install with 24 volt. You must reduce voltage to 12 volt at the heater.

PHILIP from VA answered on August 05, 2017

fits my john deere tractor and blows lots of air. very satisfied

SAM from CA answered on August 08, 2017

Mine is hooked up to 12v and works great.

JOSEPH from NY answered on August 14, 2017

I have a 12V system and it works perfectly. You will likely burn out the motor running on 24V. Resistor wire or a step-down converter are cheap and simple ways to make this motor work in your system.

NICK from UT answered on August 01, 2017

It's not a sealed unit, the air inlet is to tight against the water inlets to duct it anywhere, the best you could do is fabricate a shroud for this unit to deflect debris and water.

JEFF from WA answered on July 19, 2016

I mounted this heater outside the cab of my manitau forklift which is exposed to all the elements of a construction site and used tubing to plumb it in. Works good, keeps the windows defrosted. Fan really blows hard on high and moves a lot of heat.

JEREMY from WI answered on July 26, 2016

Fan is not sealed because it pulls its air in theu blower wheel and out of outlet of box. It probably needs to stay in a dry area. Appears that the motor is sealed.

JASON from SC answered on July 20, 2016

fan is not sealed. usually you need the out side air due to high humidity in the cab, you could seal it and move the intake higher and out of the way.

MARK from ND answered on July 21, 2016

Thank you for your question. The Summit 991102-1 Automotive Heater does not have a non-heated air function. The word air on the switch faceplate is there to designate what the switch is for. The switch has an off, low, medium and high setting.

Summit Racing Answer - February 28, 2018

The switch back the water flow thru the heater core so that air that passes the coils isn't heated. If I'm understanding the switch you speak of. Hope this helps. Works great on my Polaris Ranger btw. HP

HAROLD from MT answered on February 28, 2018

no.

DARRELL from PA answered on February 28, 2018

Don't install directly against the inside firewall because the heater hoses must me attached under the firewall, not on the outside of the firewall. Duct hoses are 3" flexible hose and mine run to the defroster. Heater works fine and I installed it on a 1951 Ford F1. You can call me for my experiences with the installation at 540 885-4487. Phil

PHILIP from VA answered on December 05, 2016

It should work fine in your application. It will o ly put out the same temperature air as your factory heater would have, which is based on your engine temperature. An average engine will have a maximum water/antifreeze temp of 195°F. Although keep in mind this unit only has a three speed fan switch for controls. Unlike your average car factory heaters that now have digital thermostats that will shut off the heat when you reach your set temperature inside the car. This unit will continue to heat until you manually shut the fan off. Even with the fan off you will still get a very small amount of natural migration of heat radiating off the coil. You can purchase an automatic valve that will close at a set temperature but now we are talking $. I installed the one I purchased on a Yamaha Rhino side by side. I simply installed two ball valves in the 5/8 inlet and outlet hoses that I can just shut off in the summer.

KENNETH from PA answered on December 07, 2016

Yes i have it in my 74 chevy truck mounted inside the cab and ducted to the original vents and works very well.

ROBERT B from CA answered on December 05, 2016