I live in Torrance, California, short hot summers, and short mild winters. My home is approximately 1600 sq. feet. Three members of my
family have astma and other allergies. I want to replace my current
system, and relocate it to the attic. I understand that the efficiency in the attic is better than in a closet.
Replaced my heater in 1982. Current Heater is a 3 ton, Carrier. I want to get a 4 ton this time around as there is a chance I may have a family room built on to the existing foundation. Heater still works, but it blows out black stuff, like grains of sand through the ducts, so I figure I need new ducts. I’ve had the ducts cleaned for the past seven years, and still get the black stuff.
For my size house and location, what is the best system to use? I’m hearing Rheem for heat, and American Standard for Air. Or get a dual American Standard unit.
Also want to replace the current duct system, which is asbestos.
I’ve been doing some research on the net and have found a Formaldehyde Free product made by Johns Manville (JM), which is good for Astmatics.
Do you know anything about the JM products? Also, what does replacing all ducts in a home include?
I have gotten one bid, but it is for a Lennox 4 ton (see below), and so many of you don’t have a lot of good things to say about Lennox, and I can’t afford to pay for a lot of repairs. Not a technical person, in any way, so I wanted to run this by the experts before I decide what to do. I appreciate any and all feedback I can get.
Thanks for your help, Jinny in Torrance.
Proposal to remove existing furnace in closet and retro-fit into attic with new furnace and add-on 4 ton 13 seer air conditioning system using “Lennox” Elite Series equipment.
- 4 ton 90,000 btu furnace m/n G5OUH-48B-090X
- 4 ton 13 SEER condenser m/n XC13-048-230
- 4 ton high efficient horizontal coil m/n CH33-44/48B
- Honeywell programmable thermostat p/n TH6220D1028
Scope of work will include the following:
(1) Removal and disposal of existing equipment.
(2) 30X30 access hole with plywood platform and catwalk with heat shield and furnace stands.
(3) 120 volt circuit into attic for light, switch and plug.
220 volt circuit from panel to a/c unit.
(4) Extend existing gas line into attic with stainless steel gas flex and shut-off valve.
(5) Primary and secondary condensation system with back-up drain pan to designated
(6) Dual wall combustion vent piping out through roof sealed and capped.
(7) 7/8x3/8 copper line set from coil to a/c unit with sheet metal flashing.
(8) U.L. approved silver faced flexible ducting to each vent in each room total of 6
supplies and 1 return, that includes manual air dampers and multi-directional