How can I change fan speed on a RUUD RCHA-48A1GG21 unit?

SOURCE: 1990 model RUUD AC unit. Fan runs, no cooling

Is the outside unit running? Fan and compressor?

SOURCE: I have a ruud rcha 36a2g heat pump from 2004. What

Hi,
The unit is a 3 ton or around 36,000 BTU
It also is around a 10 SEER could be a abit more depending on the maych up of the coil and airhandler or furnace combination...

Heatman101

SOURCE: I have a RUUD furnace

Hello, a blower motor and blower wheel will cost about 120.00 dollars on average. If you can replace it yourself than you can save alot of money, however, if you go with a hvac company they will really charge you for labor you might be looking in the 300.00 - 350.00 range. Usually blower motor's don't fall off unless the mounting bracket bolts come loose, sometimes this can be due to vibration over long periods of time. So usually they dont fall off but it does happen every now and then. Let me know if you have any further questions I will be glad to assist you.

Testimonial: "Thanks for the input. The sudden extreme freezing temperatures in TX may have contracted the bolts and the overusage may have loosened everything."

woobie dog

• 1273 Answers
• Posted on Apr 28, 2011

SOURCE: We want to change speed on air handler for unit

Hi, It depends on the make and model of the blower motor. You'll need to check this against the schematic (normally located within the electrical cavity) and work it from there. Some are two speed, some three. You can also look at the wires coming from the motor and check those that are taped off. There may be another wire, but check your schematic before changing any of the motor leads to the control board.
Best regards, --W/D--