914 Air Conditioning, Evaporator mount. Options

[McMark]

Nearly finished with the second incarnation of my air conditioning air box. Stock location, stock vents, stock fan, and no body mods.

This is the continuation of the A/C compressor project thread.

[Steve]

Classic Retrofit now sells the electric compressor by itself. Just have to build the evaporator. The condenser is the easy part.
http://www.classicretrofit.com/electrocool...ressor-and-ecu/

[76-914]

Classic Retrofit now sells the electric compressor by itself. Just have to build the evaporator. The condenser is the easy part.
http://www.classicretrofit.com/electrocool...ressor-and-ecu/

Yikes, $2300 US. Too rich for my blood.

[Steve]

Classic Retrofit now sells the electric compressor by itself. Just have to build the evaporator. The condenser is the easy part.
http://www.classicretrofit.com/electrocool...ressor-and-ecu/

Yikes, $2300 US. Too rich for my blood.

I did some homework on this. The Benling compressor is $595.00 wholesale. Street price is anywhere from $995.00 to $1200.00. It has 3 speeds, 40 amp, 60 amp and around 90 amps. Classic retrofit designed a circuit board that selects the speeds automatically based on battery drain, plus has an easy to use button versus the three speed switch. He put allot of R&D in his kit and has to make a profit.
AC is not cheap no matter which way you go.
I have not tried any of the above. Just gathering information.

[Jonny Retrofit]

Classic Retrofit now sells the electric compressor by itself. Just have to build the evaporator. The condenser is the easy part.
http://www.classicretrofit.com/electrocool...ressor-and-ecu/

Yikes, $2300 US. Too rich for my blood.

I did some homework on this. The Benling compressor is $595.00 wholesale. Street price is anywhere from $995.00 to $1200.00. It has 3 speeds, 40 amp, 60 amp and around 90 amps. Classic retrofit designed a circuit board that selects the speeds automatically based on battery drain, plus has an easy to use button versus the three speed switch. He put allot of R&D in his kit and has to make a profit.
AC is not cheap no matter which way you go.
I have not tried any of the above. Just gathering information.

^ Almost. The 3 speed compressor (even on the lowest speed) will eventually flatten the battery unless you can guarantee > 60A at idle which is near impossible on a standard alternator. On a hot day, the current on the low speed is at least 50A and you need to run the condenser fan (8A) and the blower fan (10A). Been there, done that (2 years ago now)

Anyhow, we use the variable speed compressor. Our bespoke ECU regulates the compressor speed based on a number of factors including the battery voltage, current draw, demanded temperature, actual cabin temperature. evaporator temperature. This gives climate control to within +/- 1 degree C. Don't forget the safety either. We have high and low current protection, an external contactor relay which guarantees isolation of the high current cable.

We have sense lines that can defeat or derate the compressor speed based on whether other accessories are switched on. There are also multiple guarding parameters (e.g. standby and idle timers) that can be configured via USB cable or smartphone. The control is a combined fuzzy logic / PID system. We have 1000's of hours R&D in the ECU and control software alone.

You get the compressor and mounting bracket, a full wiring harness, control switch and loom, contractor relay, the ECU and software updates for life. We are working on a smartphone app at the moment.