Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
direct drive vs. belt drive - servicewiz
servicewiz
Member Posts: 7
I have always wondered why any of the older furnaces I have replaced have mostly been belt drive blower motors while everything new is direct drive.Any pros /cons for each?
0
Comments
-
blower drive
Wiz,
The older blowers used fan belts to slip a little and absorb the starting torque before the fan got up to speed. Capacitors usually were not used until you got up to 1/2 hp size or larger. The pros of a fan belt are: Belt is easily changed. Blower motor is easy to change. The cons: Speed has to be manually changed by means of an adjustable pulley. Direct drive motors are capacitor start. The pros: the speeds are usually three or four and can be easily changed by a dip switch, moving a lead on the panel, or be thermostat action on a call for a/c. The cons are: motors are a pain to change and some manufacturers have placed the oil cup inside of the chassis making it often overlooked.0
This discussion has been closed.
Categories
- All Categories
- 86K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 52 Biomass
- 421 Carbon Monoxide Awareness
- 81 Chimneys & Flues
- 1.9K Domestic Hot Water
- 5.3K Gas Heating
- 96 Geothermal
- 154 Indoor-Air Quality
- 3.3K Oil Heating
- 60 Pipe Deterioration
- 893 Plumbing
- 5.9K Radiant Heating
- 379 Solar
- 14.7K Strictly Steam
- 3.2K Thermostats and Controls
- 52 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements