We have a house that approx. 6500 sq ft. The furnace & a/c units for the first floor are Intercity Products rated 100,000 btu and a 2T a/c. They are 18 years old. The second floor unit is a Carrier 80,000 btu with 1.5T a/c unit outside. The Carrier furnace is about 10 years old but the air cond. is the original 18 year old ICP unit. The original house was about 3600 sq ft and about 13 years ago, the previous owners built a "wing" on to the house which increased it's size. On this wing on the first floor is a huge garage which has it's own heating source. On the 2nd floor it added 4 rooms to the back of the house. They moved the a/c units to the back of this wing and they are quite a distance from the furnaces. We are thinking of replacing both furnaces and a/c units. And I have 2 quotes from Carrier dealers in the area (NE PA). But I am totally confused.

One quote says:

First floor: Install one (1) Carrier 58MVC080-14 (80,000 BTUs input) 95% variable speed blower, three stage heat, gas fired furnace, one (1) Carrier CNPVP3517 air coil, one (1) Carrier 24APA536 14.5 SEER, 12.5 EER (36,000 BTUs cooling) 3 Ton a/c iunit with Puron (410A) refrigerant, and one (1) Infinity controller.

Second Floor: one (1) Carrier 58MVC100-20 (100,000 BTUs input) 95% AFUE variable speed blower, three stage heat, gas fired furnace, one (1) Carrier CNPHP4221 air coil, one (1) Carrier 24APA542 15.00 SEER, 12.8 EER (42,000 BTUs cooling) 3.5 Ton a/c unit with Puron (410A) refrigerant, and one (1) Infinity controller.

Included are: necessary tie-in duct, wiring, venting and new refrigerant pi;ping to right side of building.

WARRANTY: one year labor, ten years on Carrier components.

$15,170.00

*Does not qualify for federal tax credit.

does not include ceiling vents that may need to be increased or any additional duct work.

THE OTHER QUOTE I RECEIVED WAS:

FIRST FLOOR SYSTEM w/Basement Zoning

BEST SYSTEM 95% AFUE Furnace, 17-SEER A/C Puron Refrigerant

Carrier 58MVC100 "Infinity" Gas Fired Warm Air Furnance

Carrier 24ANA748 Outdoor "Infinity" Condensing Unit

Carrier "Infinity" Zone Controller

Carrier "Infinity" Damper Module

Jackson Zone Dampers

*This System qualified for $1,500 Energy Tax Credit and $1,000 Carrier Cool Cash Rebate.

$13,975.00 FOR FIRST FLOOR SYSTEM

*Proposal for complete installation. We will install all necessary wiring. Install all necessary refrigerant line-set materials. Remove existing Indoor and Outdoor units as scrap. We will install a sufficient amount of supply diffusers for basement zone. We will make use of existing return for basement zone. we will transition existing supply and return duct work to new furnace. we will set outdoor unit on a light weight pad (unit will be set at sun room south wall). We will make use of existing intake and exhaust vents for the new furnace. Check complete system operation upon completion.

SECOND FLOOR SYSTEM:

BEST SYSTEM: 95% AFUE Furnace, 17-SEER A/C Puron Refrigerant

Carrier 58MVC080 "Infinity" Gas Fired Warm Air Furnace

Carrier 24ANA736 "Infinity" Outdoor Condensing Unit

Carrier SYSTXCCUID01 "Infinity" Controller

Carrier CNPHP36 Indoor Coil

* This system qualifies for $1,500 Energy Tax Credit and $1,000 Carrier Cool Cash Rebate

$13,600.00

*Proposal is for a complete installation. We will install all necessary wiring, all necessary refrigerant line-set materials (outdoor portion to be encased in downspout material). We will install a sufficient amount of Supply Diffusers (will make use of existing supply diffusers and add diffusers as required). We will remove all existing Main Trunk Ducts as scrap. We will remove existing Indoor and Outdoor Units as scrap. We will set New Furnace and Indoor Coil in a safet pan. We will set the Outdoor Unit on a light weight pad. Unit will be relocated to south wall of garage. We will fabricate ductwork using 2" fiberglass duct board. We will replace existing Flexduct runs with R-8 flex duct. We will make use of existing Intake and Exhaust venting for the new furnace. We will make use of existing gas line for the new furnace. We will check complete system operation upon completion.

Quote #1: 1st & 2nd floors $15,170.00

Quote #2: 1st & 2nd floors $27,575.00

difference: $12,405.00 WOW!!!!!!!!!!!

Is there anyone out there that knows something about Carrier and replacing furnaces that can shed any light on these 2 quotes, equipment stated, etc. that can help my husband and I disseminate what is being proposed. Why would there be such a huge difference in the proposals and their prices? Thank you.