Nordyne 621678R - SEQUENCER HVAC.com takes pride in offering helpful information about Nordyne products. If you have any questions regarding this product, please use the HVAC.com Contractor Directory to connect with a trusted contractor in your area. Nordyne furnaces from Nortek are built to last, but when yours needs repair or normal maintenance, Nordyne furnace parts from Sears PartsDirect can get it back up and running the way it's designed to operate. Heating Components. The heating system is at the heart of your furnace. In March I set the Gibson split unit air conditioner to turn on when humidity increased, to keep mildew and odors away. Nordyne or Nortek Global HVAC is where you will be spending your money 2. Height is 56" with return air grille installed, 58" with coil cabinet and 72" with coil cabinet and upflow stand. 3. The factory installed blower for the EH models can be replaced with a multi-speed blower allowing the units to accept up to 4 or 5 tons of air conditioning or heat pump. 4. Nordyne ac coil One to the tune of 1160 to replace the a coil in the air handler. It keeps losing freon now ask yourself where do you buy these parts from nordyne or nortek global hvac is where you will be The unit also features r 410a refrigerant all aluminum micro channel condenser coils full metal jackets and composite base pans. Nordyne 913549A Manuals & User Guides. User Manuals, Guides and Specifications for your Nordyne 913549A Air Conditioner. Database contains 1 Nordyne 913549A Manuals (available for free online viewing or downloading in PDF): Installation instructions . Nordyne Air Conditioner Manuals, Care Guides & Literature Parts Catalog - Shop online or call 800-269-2609. Fast shipping. Open 7 days a week. 365 day return policy. Need a manual for a Nordyne outside unit model #DS4QD-036KB - Answered by a verified HVAC Technician I have a new home and the AC company wants to install 2 night & day 4 Ton compressors instead of 2 Nor