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  1. #1
    Join Date
    Dec 2007
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    Confused Furnace Comparison

    The old dinosaur that has been heating my house for the last 26 years has finally bitten the dust.

    I have narrowed the search for a new furnace to two installers. Both are highly regarded contractors and "Premier Installers" for their respective systems. The prices quoted by the two contractors are virtually the same. So it seems to come down to the equipment.

    The house is around 1200 square feet, located in northwest Oregon, and was built in 1981. The existing furnace is rated at 60,000 BTU.

    Proposal from Contractor A:
    A Manual J heat loss calculation was run and "about 60,000 BTU" is required. I have requested a printed output for review.
    The proposed system consists of the following:
    Lennox G61V high efficiency furnace, 70,000 BTU rating.
    "Healthy Climate" MERV 10 filter. The MERV 16 was presented as an alternate but costs a bit more.
    Honeywell VisionPRO 8000 series thermostat.
    A thorough duct cleaning will also be performed.

    Proposal from Contractor B:
    No heat loss calcs were performed. The recommended size was based on experience and the existing furnace size.
    Proposed system consists of the following:
    Trane XV95 high efficiency furnace, 60,000 BTU rating.
    Honeywell F300 electronic air cleaner.
    Trane XL802 thermostat.
    Duct cleaning is also included.

    Any thoughts, opinions, sneers of derision regarding these proposals? I would be especially interested in furnace sizing, and the media filter versus the electronic filter.

  2. #2
    Join Date
    Jun 2006
    SW MO.
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    Trane has 5 yr parts warranty. Lennox has 10yr. parts warranty.

    Either heat exchanger is limited lifetime warranty.

    Check this furnace out.

    AMV9 Gas Furnace

    95% AFUE

    Two-Stage, Variable-Speed

    Qualifies for EPACT $200 Energy Tax Credit

    Outstanding Warranty Protection

    This furnace is covered by one of the best warranties in the indoor home comfort industry. If the heat exchanger ever fails to the original, registered, homeowner we will provide a new furnace. This furnace also has a 10-Year Parts Limited Warranty on all functional parts. Online registration required within 60 days of installation. For a full description of all warranties applicable to this product, please review the product brochure or click on the warranty link.

    Product Features

    Patented Million Air™ Stainless Steel Dual-Diameter Tubular Heat Exchanger
    Super-Efficient, Ultra-Quiet Variable-Speed Circulator Motor
    SureStart™ Silicon Nitride Igniter with Patented Adaptive Learning
    Electronic Control Board with Self-Diagnostics
    Auto-Comfort Mode for Enhanced Dehumidification
    Run-Tested at Factory Prior to Shipment
    Simply stated, this gas furnace may be the best you will find in the heating industry. This gas furnace has an AFUE rating of 95% which means that 95 cents of every $1.00 of heating energy expense warms your home.
    We're awl pawthetic and kweepy and can't get giwrls. That's why we fight wobots.

  3. #3
    Join Date
    Apr 2004
    Bartlett, IL
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    I could sit here all day and blow smoke but why...they're all the same crap.

    It's just a furnace....

  4. #4
    Join Date
    Dec 2002
    Toledo, Ohio, United States
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    No Heat No Cool You need Action Fast

  5. #5
    Join Date
    May 2000
    Indianapolis, IN, USA
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    Old furnace 60K with steady state output around 80% so output 48,000 BTU.

    New 95% furnaces have output around 56,000 BTU or 17% larger.

    New oversized furnace means lowered efficiency. So you may THINK you are buying a 95% furnace but frequent cycling will kill that thought. Also 90+ furnaces want to move a lot of air. If you don't have the ducts for it and you probably don't, it will be NOISY on high fire. If too restrictive, the limit switch will open. They don't like that. They'll stick open leaving you without heat after much of that.

    We can heat over 2000 sq ft with a 60K 90 and we get below zero each winter. Do you?

  6. #6
    Join Date
    Jun 2004
    Howell, Michigan
    Post Likes
    Blasting this into the resi forum.........beat ya to it John!

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